question stringlengths 19 6.88k | answer stringlengths 38 33.3k |
|---|---|
Problem Statement: Sometimes a simulation model contains user updated pure component and binary interaction parameters. These parameters can be used in other process models. The steps to create an enterprise database for these parameters are discussed in this document. | Solution: In newer versions of Aspen Plus, you no longer need to make the division of files into DAT and INP, as described in How to create an enterprise database for pure component and binary interaction parameters from a simulation model (V7.3) . Now exporting the DFM file, modifying it, and saving it as an INP forma... |
Problem Statement: On using V11 MSC Token installation media, on running the silent installation package, the 64-bit path does not get installed and is missing from the environment variable. The installation is successful but only the 32-bit path gets installed, and the 64-bit path is missing. | Solution: This is a known issue and fixed in V12 defect 537559, 535148. When we use silent installation, these products will be affected.
The current workaround for V11 is to:
Copy the SetEnvironmentVariabe.exe (found in the attachment section of this article) to your local path, the same location as aspenONE Manufac... |
Problem Statement: Back to Basics :
What is difference between T. BUY & T. SELL in PIMS. | Solution: 1) T. BUY
Table BUY is used for identifying the materials that can be purchased and to define the purchase constraints on individual materials.
Structure of T. BUY
2) T. SELL
Table SELL is used to identify the materials that can be sold and to define sales constraints on individual materials.
Structure of T.... |
Problem Statement: What is the single character nomenclature to be used for 100 models that can be attached to GLOBAL model. | Solution: As PIMS supports 100 models that can be attached to GLOBAL model which can be defined with the help of single character nomenclature. Below are the characters that can be used as single character nomenclature for 100 models.
Characters from A to Z = 26 models
Characters from a to z = 26 models
Characters from... |
Problem Statement: How do I specify wind velocity in an Aspen HYSYS pipe segment? | Solution: To include wind velocity in the Heat Transfer Coefficient calculation of a Pipe Segment, please go to Rating tab | Heat Transfer | Estimate HTC form:
The Ambient Medium dropdown menu contains three option for medium specification: Air, Water and Ground. Select Air.
It will display a field for Velocity spec... |
Problem Statement: How do I resolve the error message in Aspen Plus RadFrac Column Hydraulics “unable to compute curve at the specified minimum pressure drop per unit packed height”. | Solution: While RadFrac column hydraulics, after adding the column internal, results are available. But the hydraulic plots display “unable to compute curve at the specified minimum pressure drop per unit packed height”.
This issue might be observed while rating the column, due to this the curve may not be calculated ... |
Problem Statement: I get the following message when executing a kinetic reactor such as a RCSTR:
** ERROR
M-BAL LOOP DID NOT CONVERGE IN 200 ITERATIONS. CHECK
STOICHIOMETRY/MOLECULAR WEIGHTS.
How do I remove this error or warning message? | Solution: This warning/error is related to the mass balance. Users should first check if there area any errors in the molecular weight of a product or reactant or errors in the stoichiometry of a reaction.
This error can also occur if there are reactions with zeroth-order reactants which are not present or if there a... |
Problem Statement: Sample example of Sour Water Stripping with Phenol | Solution: Sour Water Stripping with Phenol
Sour Water Stripping With Phenol.hsc demonstrates the difficulty of removing phenol using the sour water stripping process. In this case, phenol remains in the treated water because of its low volatility. The presence of phenol in the sour water may require the inclusion of a ... |
Problem Statement: Which non-condensable components are included within Aspen HYSYS component list? | Solution: Henry's Law cannot be selected explicitly as a property method in HYSYS. However, HYSYS uses Henry's Law when an activity model is selected and non-condensable components are included within the component list.
HYSYS considers the following components non-condensable:
Component Simulation Name
CH4 Methane
C2H... |
Problem Statement: How to define Henry components in Aspen HYSYS? | Solution: In Aspen HYSYS, HYSYS Databank, there is no Henry's component as in Aspen Plus or Aspen Properties. User can use Aspen Properties databank in Aspen HYSYS and assign the component as Henry's.
Add Component List from Aspen Properties Databank.
Add required components.
Henry Comps tab is available... |
Problem Statement: What OPC servers has the Aspen CIMIO for OPC interface been tested with and what were the results? | Solution: We have connected Aspen CIM-IO for OPC interface to several dozen different OPC servers. Since the OPC server list is ever growing and the OPC standard has become fairly well known we have stopped keeping track of all the servers. We can talk to any OPC server that conforms to the 1.0 or 2.0 DA specification.... |
Problem Statement: In this KB, we will discuss different kinds of A1PE plots. | Solution: 1. Event Overlay Plot:
- The event overlay plot is used to display a single process variable trended across multiple event time ranges.
Note: tag aliases are supported.
Figure 1: Event Overlay Plot
2. Multi-Event Plot:
- The Multi-Event plot is used to aggregate process variables and/or characteri... |
Problem Statement: What is the slug flow rate unit? | Solution: The equation for Slug Flow Rate is:
(Slug Flow Rate) / (Overall Liquid Flow Rate) = LS* HS (ULS + UGS) / ((LS + LB) * ULS)
The equation gives the fraction of the total liquid flowrate that is transported as slugs (hence it is unitless value).
Where,
LS - slug length (as reported by HYSYS) - m
LB - bubble len... |
Problem Statement: How to perform dynamic modeling for acid gas cleaning process in HYSYS? | Solution: The Acid Gas Technology, also known as Acid Gas Property Package, it does not fully support dynamic simulation in previous version（Pre V11. The reason can be refer to KB 000060096-Dynamic Simulation with Acid Gas Technology in Aspen HYSYS.
Now from V12, Aspen HYSYS can support Acid gas cleaning dynamics usin... |
Problem Statement: The customer wants to consolidate their MS SQL Servers and this means they want to run Aspen Framework Server using a database on a remote machine. Is this a supported environment? | Solution: Yes this is supported. It is assumed that for AFW the SQL Server can be installed on a either on the local machine or on another machine. However, some changes are necessary after the basic AFW installation.
1) Copy the C:\Program Files (x86)\AspenTech\AFW\DBUtility folder from the AFW server to the SQL serv... |
Problem Statement: Do we have any examples of drying operations for Biomass/Food Applications? How do we consider drying of biomass? | Solution: Aspen Plus can be used for the processes using nonconventional components for biomass or food applications.
This article provides an example using biomass drying which will demonstrate the application for building the Food/Biomass dryer. You can simulate biomass or food material as a non-conventional solid c... |
Problem Statement: Why there is a different temperature of the split streams than its original stream after the split block? | Solution: In the splitter block after the split, by default Aspen engine makes the flash calculation. Due to this, there is an increase in the entropy of the stream (stream results) due to liquefaction, which resulted in the temperature change. There is some kind of flashing happening inside this closed loop.
This can... |
Problem Statement: How to load an Aspen InfoPlus.21 Snapshot | Solution: STOP Aspen Infoplus.21 using the IP.21 Manager
Note the snapshot path found in the DBClock command line parameters.
Copy your backup file to the location above.
Rename the old file with a name that indicates that it is an old file. For example 'InfoPlus21_old_DATE.snp'.
Name the backup file as InfoPlus21.snp ... |
Problem Statement: When trying to manipulate an element of data array created using the Process Data Add-in, the following error will be displayed:
You cannot change part of an array. | Solution: There are quite a few rules about how arrays work. The following Microsoft website article explains these rules.
https://support.office.com/en-us/article/Rules-for-changing-array-formulas-8A80C2C1-44C1-42C3-88C1-37A3A7C2D367
Specifically, there is a bullet on this page which states:
* You can't delete cells i... |
Problem Statement: Can Aspen HYSYS generate isobars for a condensing stream? | Solution: The Heating blocks in HYSYS (heater, cooler, heat exchanger) can generate property tables and plots to generate these heating curves.
After any of these units has solved simply go to the Performance tab and select the Table section.
You will be able to obtain the heating curves for both the shell side and t... |
Problem Statement: Why the temperature profile result for tail pipe section (upstream & downstream) are inconsistent when running a blowdown analysis? | Solution: The temperature profile result for pipe section (upstream & downstream) are inconsistent is due to the lack of a component to represent the change of diameters between the orifice plate and the pipe segment. Physically we do not have this component, so there will be a change in the temperatures due to the cha... |
Problem Statement: How efficiently Aspen DMC3 | Solution: can be used to reduce energy & how they can minimize waste by reducing variability in the process & improve quality of products.
Solution
Within identified challenges to achieve the sustainability goals by automatically adapting and optimizing to ever changing plant conditions. Embedded AI to build seed APC m... |
Problem Statement: Why the APRM batch jobs scheduled on the APRM server should are not able to fetch data from IP21 server After a reboot of IP21 server?
error message in the log file [ Batch21Services_AtlServer__x64.16.0.1.156 ] :
B21BAI-60271: Could not connect to server <IP21_Server_Name>: -2147220990 | Solution: In this case the IP21 server and APRM server are different server but it is recommended to keep APRM and IP21 on the same server.
The maximum time the server will try to reconnect the IP21 server is 15 minutes after that it will give error that could not connect to IP21 server.
We need to stop the services fr... |
Problem Statement: If RTO Watch is configured with Aspen OnLine, the CIM-IO connection will fail. | Solution: Navigate to C:\Program Files (x86)\AspenTech\CIM-IO\io\Cimio_rto and open the file named cimio_rto.exe.config. Change the AspenOnLineVersionMinor string from 0 to 1, save the file, then restart CIM-IO.
Keywords: None
References: None |
Problem Statement: AFW performs automatic logging in C:\inetpub\logs\LogFiles. In some scenarios, these logs can grow too big in size and fill up the disk on the web server. This KB presents a | Solution: to turn off that logging operation.
Solution
Open IIS Manger, expand the server name and the sites folder
Go to Under default Web Site, Aspentech, Afw. Then, select logging under IIS.
Click on disable. This will prevent AFW logs to grow too big on the web server
Keywords: …AFW, Web server, AFW Logs, IIS, in... |
Problem Statement: What is the difference in between Ignore bad quality Data and Allow Live agent processing with bad quality data in Aspen Mtell System Manager? | Solution: Ignore bad quality data – Default enabled
This determines whether bad quality historical data is allowed into the training data set. When enabled, data points with bad quality are excluded from the training data set. When disabled, all data points are saved to the training data set, regardless of quality. Th... |
Problem Statement: How to Set up an Automatic Analysis using PID Watch? | Solution: The most useful mode for Aspen PID Watch analysis is its ability to automatically schedule the scanning and analysis of groups of PID loops.
1) Go to the Process Control Web Viewer.
2) Click on the history tab.
3) In the navigation window, open the Aspen Watch server and select the PID Loops section. Once in... |
Problem Statement: In this KB, we will use the final corrected model to configure the controller tuning parameters and add constraints. | Solution: The following calculations are added as per below screenshot:
Figure 1: Calculation 1
Figure 2: Calculation 2
Figure 3: Calculation 3
Now, the constraints are added because we want the temperature across the three passes to be uniform. So, we want to force the gain between the flowrate and temperatures to... |
Problem Statement: In this KB, we will examine the assembled model and fix any collinearity issues & carry out transform estimation part. | Solution: We will perform following steps in this KB:
Transforming nonlinear valve Ops
Collinearity Analysis
Transforming FC122SP Vs FC122OP
Figure 1: Piecewise Linear FC122SP Vs FC122OP
Transforming FC123SP Vs FC123OP
Figure 2: Piecewise Linear FC123SP Vs FC123OP
Transforming FC124SP Vs FC124OP
Figure 3: Piecew... |
Problem Statement: In this KB, we will learn how to Import dataset into DMC3 Builder and use the dataset to build the controller configuration upon. | Solution: In this step, we will import dataset into Aspen DMC3 Builder on the data provided:
A new project named Crude Unit Heater Controller is created.
Figure 1: Crude Unit Heater Controller Project
Importing dataset into the project by clicking on import.
Figure 2: importing Dataset
Clicking start to interpolate... |
Problem Statement: The goal of this series of articles is to learn how to build a DMC3 controller with DMC3 Builder interface using a pre-collected step test data for Crude Unit Heater. | Solution: The various parts that need to be completed as part of this series include-
How to Build a DMC3 Controller Series. Part 1: Import Data
https://esupport.aspentech.com/S_Article?id=000097929
How to Build a DMC3 Controller Series. Part 2: Fix Gain Collinearity Problems and Transform Estimation
https://esupport.a... |
Problem Statement: In this step, we will deploy the controller online. | Solution: Before deploying the controller online, the connections were tested first as shown below.
Figure 1: Connection tests
Now that the connections are successful, the controller can be deployed.
Figure 2: Deployment
After the deployment step, the controller is running now which means it can be accessed using PC... |
Problem Statement: How do I disable the user registration dialog in aspenONE?
The first time a user launches any aspenONE product, he gets presented with a User Registration dialog. The purpose of this registration is to create/update a user record with AspenTech Support. Registering offers different benefits which are... | Solution: Although we strongly recommend that User Registration dialogs would be displayed for all the users of our softwares, they are cases where System Administrators want to disable them in their environment. Here is how to proceed.
1) DISABLING USER REGISTRATION DIALOGS AT 'USER LEVEL' (Applies to all aspenONE ver... |
Problem Statement: How to model pressure rise due to the fire heat load input for delayed orifice opening to blowdown system? | Solution: For time delay on orifice opening, you need to enter the initial opening time.
In blowdown, the orifice opens at time t = 0 sec. The above scenario shows that we need to delay the activation of blowdown valve by 20 sec. After these 20 sec, the orifice will be ON.
To simulate a delay in the orifice opening i... |
Problem Statement: How can I control the number of Engineering Drawings on my Aspen Capital Cost Estimator project? | Solution: Aspen Capital Cost Estimator (ACCE) provides a field to control the amount of Drawings and Diagrams to be included on the estimate.
In order to fully control all these Drawings, it is important to first review the results generated by ACCE’s system, this will allow you to understand which drawing types need ... |
Problem Statement: Is it possible to split a workspace into sub-projects and merge them altogether into one final project later in ABE (Aspen Basic Engineering)? | Solution: In our training, we cover the use of Project Management feature to split a workspace into projects to handle different alternative cases on the design. In this workflow, the user selects only one of the projects to commit and merge back to the master project.
The Project Management feature can extend beyond ... |
Problem Statement: Which are unit operations supported for malfunction scenarios in Aspen HYSYS Dynamics? | Solution: Starting in Aspen HYSYS V11, user can now model equipment failures, malfunction, or performance deterioration quickly and easily in Aspen HYSYS Dynamics for the following unit operations:
Air-cooled heat exchangers
Heat Exchangers
Pumps
Pressure relief devices (PSVs)
Valves
User can access this feature on th... |
Problem Statement: Customer may not be able to run the V12 Emergency Patch installer directly due to some security restrictions. | Solution: Users can expand the emergency patch installer to a local folder and then run the EP.exe to start the emergency patching process.
Using a ZIP extract tools such as 7zip or WinZip, customers can extract the contents of emergency patch installer.
After the file extraction, run the EP.exe from the extracted fo... |
Problem Statement: Do Aspen Mtell Rule Agents follow specific asset offline conditions? How do they behave in terms of asset status? | Solution: Aspen Mtell Rule Agents are designed specifically to only consider the Boolean rule defined in the agent. Offline status/condition of the Asset is not taken into consideration while processing Live Rule Agents. These offline conditions must be incorporated within the Boolean function while creating the Rule a... |
Problem Statement: The granularity shown in the Processed Data tab of an agent's View Trend does not match the granularity of the TDS under which it is created. For example, an hourly TDS may have processed data every minute. This often happens when the sensor data source is CSV files.
This also may cause agents to ... | Solution: When importing your CSV historian data, you may have set the Interpolation Mode to None. Follow the below steps to change your Interpolation Mode to Linear or Stair Step.
Note: This procedure will delete the data currently imported in your TDS(s). This means you will need to retrain all the agents under that... |
Problem Statement: This error message is very general, this KB article explains some tips and tricks to successfully import data. | Solution: Apply the following recommendations in the text file
Sort data from Oldest to newest. First sample should be the oldest
Import the txt file in excel and save it as tab delimited. Then try to import in IQ Model
In the File Format window, make sure to select the appropriate “starting in field” or tag names.
In ... |
Problem Statement: How is the the CP/CV ratio for a mixture calculated in Aspen Plus? | Solution: If the user requests the CV/CP ratio to be computed (by including CPCVMX in the stream report), Aspen Plus uses the following relations:
CV = DHMX + T*DVMX**2/DVDP
CP/CV = DHMX / (DHMX + T*DVMX**2/DVDP)
where:
P - System Pressure (N/M2)
T - System temperature (K)
DVDP - Partial derivative of mixture molar vol... |
Problem Statement: Under Input | Components, I noticed the listed Types are not correct. How do I fix these? | Solution: In order to modify the component Types after they have been added to a file, we can use the Aspen Flare System Analyzer (AFSA) Spreadsheet Export/Import Feature:
In AFSA, go to File | Export Case In
Choose .mdb | .xls | .xml format
Click Browse
Navigate to the desired location, provide a File name, change the... |
Problem Statement: I am receiving the following errors when evaluating my project. How do I resolve these errors?
FATAL> 'W1 - 2' CWF INPUT IS NOT ALLOWED FOR PRIME CONTRACTOR RUN
FATAL> 'W1 - 2' WORKFORCE DATA ERRORS PREVENT PREPARATION OF PROJ ESTIMATE | Solution: There are two primary reasons for these errors. Both involve setting up multiple contractors with either of the two situations below.
The first reason is the option to Suppress default equipment/area/project bulks is set to M. Please see this KB for more info:
https://esupport.aspentech.com/S_Article?id=00... |
Problem Statement: Can the length of my file name cause the Reporter error shown below?
Aspen Economics Reporter
Cannot open database
<users file name> requested by the login. The login failed.
Login failed for user '<user>'.
Reporter application will close. | Solution: Yes, it is possible to receive the error above if the file name is too long (too many characters). Please try shortening the file name, saving and then re-running the report again.
If the issue persists, then please contact AspenTech Support.
Keywords: Reporter, error, login, failed, file, name, length
Refe... |
Problem Statement: How do I resolve the following error when I run a heat exchanger that involves the heating of a cold stream (water) to the above supercritical condition in using Aspen Plus?
I get the following errors:
** ERROR
DEW POINT CALCULATIONS CANNOT BE PERFORMED BECAUSE THE SPECIFIED PRESSURE
IS ABOVE THE CR... | Solution: The error messages are valid since the stream is being flashed as Vapor-Liquid.
In order to get rid off the error messages, you will need to change the valid phases of the Cold stream in the Heat Exchanger block to Vapor-only to avoid the Vapor-Liquid flash and prevent the error. This makes sense if you are ... |
Problem Statement: How to get rid off the following error message The embedded Excel object could not be located when launching a simulation file in Aspen Plus? | Solution: If the case file is saved as a backup (.BKP) file, it should have an associated .APMBD file which is the file Aspen Plus uses to store the embedded excel file.
When the following error message appears, it means that the .APMBD file is missing.
In order to get rid off the above error message, you will need t... |
Problem Statement: After installing the Matrikon OPC Simulation Server the following error shows up when launching either GDOT Web Pages (GDOT-Simulation and GDOT-Online) or the Aspen Unified Web Page:
HTTP Error 500.0 – Internal Server Error
Calling LoadLibraryEx on ISAPI filter “C:\Windows\Microsoft.NET\Framework\v4... | Solution: To solve this issue, it is necessary to perform the next procedure:
Go to the Internet Information Services (IIS) Manager, click on the server and double click on ISAPI Filters.
Locate the filter which is associated with the Executable C:\Windows\Microsoft.NET\Framework\v4.0.30319\\aspnet_filter.dll
You wi... |
Problem Statement: Sites with more than one Aspen InfoPlus.21 server may wish to view tag data from these remote data sources in their local InfoPlus.21 client applications (e.g. Aspen Process Explorer, SQLplus, aspenONE Process Explorer or the InfoPlus.21 Administrator.) To do this, the system administrator or user mu... | Solution: Users may configure remote data sources on their own PC as a user defined data source (which will only be available on that client PC.) The option to configure public data sources (accessible to all users) is only available on the ADSA server.
To search for ADSA servers on the network, go to Start-> Programs-... |
Problem Statement: Should the DMCplus Controller fail to converge to a | Solution: an LP Internal Error message is issued and the controller sheds (goes open-loop)?
In many cases, prior to shedding, the controller may issue an LP ExtendedSolution Warning (without shedding). This warning should already prompt the user to investigate:
* conditioning the controller's model as shown inSoluti... |
Problem Statement: AspenTech has successfully tested 500 filesets per repository and is aware of customers using even higher numbers (up to 600).
Whether it is to work around the 500 fileset limit or some other technical reason, we are aware that sometimes customers want to split an existing repository. This | Solution: addresses this issue.
Solution
Here are the steps to split a repository:
Let's suppose you have 20,000 tags in your database and you want to take 10,000 of them and point to a new repository without losing old history for any of them :
You will initially need enough disk to hold a copy of all current filesets... |
Problem Statement: Install Package to enable Hybrid Modelling in V10 and V11 of Aspen Plus and Aspen HYSYS | Solution: Hybrid Modeling, new in aspenONE Engineering V12, combines AI and First Principles to create a comprehensive, accurate model more quickly without requiring significant expertise and deployed as a sensor or unit operation model in Aspen Plus or Aspen HYSYS. Hybrid Models are built using the Aspen AI Model Bui... |
Problem Statement: KB000063468 describes about an example script created using Aspen SQLplus to return the last known Good value of a single tag historized in Aspen Infoplus.21.
Customer may want to get the last Good value for multiple tags. This KB article provides a sample script to return the last Good value for t... | Solution: 1- Download attached Temp.zip file.
2- Un-zip Temp.zip and copy the Temp folder to C Drive on the Infoplus.21 server.
3- Update the TagList.txt to include your tag names
3- Launch Aspen SQLplus query writer on IP.21 server and open main.SQL at C:\Temp\Query
4- Execute the main.SQL from query Writer
5... |
Problem Statement: How to place “Gap” at Cross point? | Solution: 'Gap' is typically used to show that crossing connection are unrelated(i.e. piping system cosmetic reason)
Here's a quick step to place an in-line gasp on a connection:
1. On the Gapping toolbar, ensure that ‘Standard’ is selected for the Size (this is the default).
2. Select a connection. Two new features no... |
Problem Statement: The Fire Heater will heat all the radiant zone streams equally using energy from the combustion, to distribute all energy from the combustion; set a steady state efficiency percentage. | Solution: In a Fire Heater Block Design | Parameters | Steady State Parameters, Efficiency must be specified.
If the efficiency is 0, then all the energy from the combustion will go into heating the flue gas. If the efficiency is 100%, then all the energy will go to heating the radiant zone process streams and the fl... |
Problem Statement: When setting up Reducing Gas Generator block specifications, Air Stream and Burn Stoichiometry [%] are required parameters, yet, they cannot be specified together. If both values are entered the Reducing Gas Generator block will display the message Cannot specify burn stoichiometry and air flow. | Solution: The Burn Stoichiometry [%] field is linked to the flowrate of the Air Stream connected to the Reducing Gas Generator. If the flowrate of the Air Stream is specified, a calculated value appears in this field. If you specify the Burn Stoichiometry [%], HYSYS calculates the flowrate of the Air Stream accordingly... |
Problem Statement: The Aspen Exchanger Design Template (EDT) can only be crated from the Aspen Exchanger Design and Rating standalone application. Files with this saved as *.EDT, are created to store geometry and design specification for an exchanger type.
This Template file is compatible to be imported into HYSYS an... | Solution: To create an *EDT file follow the listed steps:
Properly enter or calculate the exchanger's geometry, make sure results match what is wanted.
Go to File ribbon | Save As, locate where the file will be saved.
Under the Save as type, select from the options Aspen Exchanger Design Document Template (*.EDT)
Ke... |
Problem Statement: The buckling distance value is directly calculated from specifying stiffening rings in the Shell Cylinder geometry specifications, this can be reviewed on the Results | Input Summary | Cylinders/Covers/Flanges | Shell Cyl. | Stiffening Rings. | Solution: If the Stiffening Rings options is chosen as yes and the number is properly entered in Exchanger Geometry | Shell | Shell Cylinder, is well know that If the user enters the number of stiffening rings and doesn’t enter the shell cylinder length or the shell cylinder length for external pressure, the buckling l... |
Problem Statement: Water is an universal solvent and can dissolves almost every solute. Certain factors can influence the solubility of a substance such as temperature and pressure.
Solubility is the new bond formation between the solute molecules and solvent molecules. The objective of this example library is to use ... | Solution: In Aspen Plus create a Sensitivity Analysis that varies the three phase separation tank's temperature (SEP101) to review the change of concentration of propanol in both outlet liquid streams.
Key Words:
Sensitivity Analysis, Liquid Liquid Equilibrium, Liquid Concentration, Propanol in Water, Aspen Plus
Ke... |
Problem Statement: The objective of this example library is to set a Direct Fire Heater for a Sulfur Recovery Unit and adjust the outlet gas temperature varying the Fuel mass flow. | Solution: Use the adjust block to fix outlet temperature conditions of the product gas of a Direct Fire Heater block, varying the fuel flow into the unit operation.
Key Words:
Direct Fire Heater, Sulfur Recovery Unit, Aspen HYSYS
Keywords: None
References: None |
Problem Statement: The objective of this example library is to set a Selective Oxidation Converter for a Sulfur Recovery Unit in Aspen HYSYS and adjust the outlet gas temperature varying the air mass flow. | Solution: Use the adjust block to fix outlet temperature conditions of the product gas of a Selective Oxidant Converter, varying the air flow into the unit operation.
Key Words:
Selective Oxidant Converter, Fixed temperature, Sulfur Recovery Unit, Aspen HYSYS
Keywords: None
References: None |
Problem Statement: The objective of this example library is to use the Fire Heater unit and Recycle block in Aspen HYSYS to simulate a simple fire heater with recirculation of the product from the radiant section into the convective section. | Solution: The recycle block will help to transfer the results get from radiant calculations going to the convective feed into the fire heater block and performs an analysis for both radiant and convective section of the fire heater for the same process stream.
Key Words:
Fire Heater, Convective recirculation, HYSY... |
Problem Statement: Shell and tube heat exchangers have many modifications of the basic configuration which can be used to solve special problems in the process industries, adding extra supports to baffles configuration to help prevent vibration issues, also to match specific bundle arrangement. | Solution: The objective of this Example library is to match the following support arrangement for a single segmental baffle specification (supports in red)
We will achieve the objective by defining the following:
Number of Supports between central baffles.
Number of supports at front head end space
number of suppo... |
Problem Statement: A contact condenser or spray condenser is used for the condensation of humid water vapor by direct contact with water. The inlet water is at a temperature less than the dew point of air in the chamber. | Solution: This example library shows how to simulate a contact condenser in aspen HYSYS, with a mixer block that will feed both vapor and cooling water; a two phase separator block, a cooler for the non-condensables leaving the separator, and a adjust block that will help us fix the amount of vapor leaving the tower a... |
Problem Statement: How to restore or backup a Workspace in ABE V12? | Solution: In V11 and older versions, the tool used was AZ Backup tool. Follow the next article steps for those versions.
Since V12, the Backup & Restore Utility is the new tool for backup and restore. It can be easily accessed from the ABE Administration.
In the Administration tool go to Action menu and select Backup ... |
Problem Statement: How do I get the composite curves related to the heat exchangers in my Aspen HYSYS simulation? | Solution: You cannot get the composite curves directly from Aspen HYSYS, you need to do it using Aspen Energy Analyzer.
1. Open Aspen Energy Analyzer (Same version as Aspen HYSYS)
2. Create a new project
3. Click on Data Extraction from Aspen HYSYS and the Extraction Wizard opens. Click next
4. Select t... |
Problem Statement: Is there a difference if I use the Case Study utility in Aspen HYSYS or Multi-Case with one single core? | Solution: Yes, the performance in Multi-Case is better because of the nature of the solver and the additional tools that are only available in Multi-Case such as the ability to select a combination of Nested and Discrete analysis, which is not possible in HYSYS.
Keywords: Multi-Case; Single Core; Performance; Case-Stud... |
Problem Statement: Warning message when importing new price set in MBO through EIU is wrongly worded | Solution: When using EIU to load a new price set into MBO, users might get the below warnings about the cells containing Product Purchase prices.
In this case, there is no issue with the EIU validation or the default template - both perform correctly. But the warning message should be worded as:
Cell in XXX workshe... |
Problem Statement: User calc trims the decimals and outputs only whole numbers to the event dialog box | Solution: If user has the Crude Receipt user calc sheet defined (CRDRCPT) and let's say that the only thing the user calc does is copy the inputs to the outputs. Now the Crude Receipt event has 3 tanks T009, T001, T003 defined to receive the receipt volume. Lets say the user has defined that T009 will receive 117.283, ... |
Problem Statement: What does all the locking information mean in SLM License Manager? | Solution: SLM Locking information is required when generating a license. SLM lock codes are uniquely generated hexadecimal codes that are generated from each locking type. The license will be tied to a specific lock code on your computer, and this will prevent the license from working on a different computer. The SLM ... |
Problem Statement: Why does the error “Cannot set value for field with no defined case” appear when editing a field? | Solution: This error appears when the field has not a case assigned. Therefore, a case must be selected for that field or fields.
See the screenshots below to review the defined case of a field.
In Excel Datasheet Editor:
In Legacy Datasheet Editor:
To know how to define and display multiple cases information, c... |
Problem Statement: How to debug a dll KB script using Visual Studio? | Solution: The attached guide will show users the workflow to utilize Visual Studio to debug Aspen Basic Engineering (ABE) custom dll scripts. The document focuses primarily on establishing the code interaction with ABE process rather than explaining how to debug Visual Basic code. The document assumes users have some f... |
Problem Statement: When running the batch file InstallBatchAPC.bat, it fails with the error message: Error: Invalid Syntax. Type REG ADD /? for usage
Root Cause
The InstallBatchAPC.bat utility command line that produces this error is shown below:
REG ADD %REGKEYIP21%\%IP21Version%\group200\RegisteredTasks\TSK_DBCL... | Solution: If you are experiencing this uncommon issue, please submit a Support ticket and we can provide you with a hot fix for the batch file: https://esupport.aspentech.com/s_casesubmit
The fix is to include triple-double quotes () around the InfoPlus.21 64-bit directory location.
For example: SET DBCLOCKPAR=DOUBLE... |
Problem Statement: When working with traditional ramps with imbalance (MXNIMB>0), the upper and lower imbalance limits are pinched at 0.0 to force the ramp to be “balanced” every cycle, forcing the SS optimizer to consume one degree of freedom. Moreover, in PCWS these values are always zero which is the designed behavi... | Solution: TheSolution is to implement two input calculations in the controller for the high and lower imbalance limits. Two user defined entries will be created to store these values each cycle.
========== UpperRampImbalance=============
'Calculation to calculate the UpperRampImbalance when MXNIMB>0 and store it on a u... |
Problem Statement: Infoplus21 can be played as OPC UA server when IP21OpcUAServerHost.exe is running at backend. Are there any connections limit for Infoplus.21 OPCUA Server ? | Solution: The number of connections supported by IP21 OPCUA Server are defined in the C:\ProgramData\AspenTech\InfoPlus.21\db21\group200\tsk_opcua_server.opcua.config.xml file.
<MaxSessionCount>100</MaxSessionCount>
The default value is 100, which means that maximum 100 client connections will be supported.
Key Word... |
Problem Statement: CIM-IO Interface Manager in v11.0.1 will allow the user to specify the OPC HDA Server and the maximum history recovery time period, in minutes, for a selected instance of a CIM-IO for OPC interface.
This KB article provides an example for using CIM-IO for OPC DA/HDA to get data from one Aspen Info... | Solution: In this example, we will set up three boxes. Source IP.21 server as OPC DA/HDA server, CIM-IO server and Target IP.21 server.
1- Configure the source IP.21 server to simulate OPC-HDA server.
InfoPlus.21 OPC-DA layer only supports reading current data. However, it is possible, using third-partySolutions, to... |
Problem Statement: There is a need to support history recovery from OPC Server (Classic) to cover instances when the data collection mechanism loses communication with the server. | Solution: CIM-IO Interface Manager in v11.0.1 will allow the user to specify the OPC HDA Server and the maximum history recovery time period, in minutes, for a selected instance of a CIM-IO for OPC interface.
(Note: Feature is considered to be disabled if the maximum history recovery time period is zero.)
A... |
Problem Statement: This Knowledge Base article provides guidance on how to manually insert and edit tag data to the Aspen InfoPlus.21 (IP.21) database from aspenONE Process Explorer. | Solution: The aspenONE Process Explorer application allows users to manually insert new data points for tags and also edit data points that have already been written to the database.Solution 1 of this article will illustrate how to write a new data point for a selected tag to the database.Solution 2 will show how to ed... |
Problem Statement: Scattered around the InfoPlus.21 Installation manual you will see the following statements
Whenever history file sets are moved to a new system, their MAP.DAT file must also be moved.
Backups of history file sets without the MAP.DAT file could be useless, causing complete loss of historical data if t... | Solution: First of all let's define a 'tag' as an InfoPlus.21 data record that contains a History Repeat Area. This includes history for Analogs, Discretes, Text, Logs, etc. Whenever a tag is created, the user needs to open the Memory repeat area, then define a History Repository, and finally turn on Archiving. The act... |
Problem Statement: You can use the Redefine Wizard to add a field to the fixed and repeat area of a record.
1. When you add a field to the history repeat area, what effect does it have on the history already on disk?
2. Is history rewritten?
3. Or does the redefine wizard modify the contents of map.da... | Solution: The Redefine Wizard modifies the internal history retrieval code to support changing the structure of a history occurrence. Previous software releases had warned against changing the structure of a history occurrence because it would result in the loss of existing history. The Redefine Wizard accommodates the... |
Problem Statement: This article describes the best practice to be followed for variable type settings, while configuring and deploying Aspen GDOT online applications | Solution: Note on variable type settings for Binary or Integer MV’s
Aspen GDOT projects deployed online are most of the time, configured to solve continuous optimization rather than a mixed integer optimization problem. However, even with a continuous optimization problem, it is a practice to often legitimately inclu... |
Problem Statement: Why do I get Error 1068:The dependency service failed to start, while starting Aspen APC DMC plus data service?
This error could appear for Aspen APC Web provider data service as well. | Solution: Error 1068 is a specific windows service error. There could be two reasons for this error:
1. When one of the dependent services is not started for the service which we are trying to start.
The Aspen APC DMC plus data service actually has two dependencies services, which are as below:
- ACO Util... |
Problem Statement: Which AspenTech application is appropriate to do pressure drop calculation? AspenTech has multiple options to do the pressure drop calculation. | Solution: The options to use hydraulics calculation in AspenTech are
1. Pipe Segment (Available in HYSYS, from Aspen Tech, No additional license needed except for OLGAS.). SPT group OLGA?s correlation is available to check pressure drop correlation for multiphase system.
Note: OLGAS is the steady-state flow correla... |
Problem Statement: When importing a MOL file on the Components | Molecular Structure | Structure and Functional Group sheet, after the MOL file is selected and the Molecule Editor closed, the structure is not saved. | Solution: Import it from the Components | Specifications | Selection sheet using the User Defined wizard.
Fixed in Version
V12.1
Keywords: None
References: : VSTS 573046, 567999 |
Problem Statement: A simulation has an error message that the extrapolated EOS volume root was used for property calculations. What does this mean and how do you fix it?
The message is
** ERROR
FLASH RESULTS ARE WITHIN TOLERANCE, BUT MAY BE UNSATISFACTORY BECAUSE
EXTRAPOLATED EOS VAPOR VOLUME ROOT WAS USED ... | Solution: (root) for a particular phase, and a pseudo-root is calculated based on pressure and the derivative of pressure with respect to volume. This pseudo-root represents an estimate of the properties for the phase which could not be solved.
The fugacities of the phases are determined from these roots and the pseu... |
Problem Statement: How does the Adjusted Total Project Cost calculated and why is it different from Total Project Cost? | Solution: Sometimes when you run a complete Project Evaluation in Aspen Process Economic Analyzer (APEA), you can display the default HTML Item Report (Excel), and in this report you will found difference between Adjusted Total Project Cost and Total Project Cost in Project Summary sheet.
The Adjusted Total Project Co... |
Problem Statement: How does FCC-Cat/Oil Ratio calculated and why the reported value is different from manually checking result? | Solution: Cat/Oil Ratio is the the ratio of FCC catalyst and feed oil, while if manually calculate the result based on FCC data, you will find that it is little difference from the FCC reported.
Take an example as below:
Example file: C:\Program Files\AspenTech\Aspen HYSYS V11.0\Samples\Refining Cases- FCC_w_Hydrotrea... |
Problem Statement: How to select correct property package for modeling Crystallizer in Aspen HYSYS? | Solution: If modelling Crystallizer in HYSYS, user need to use OLI Electryte pkg, this need OLI license from OLI system company.
But if user is capable of using Aspen Plus, then recommend use Aspen Plus to model the crystallizer rigorously with more accurate properties databank, Elec Wizard help, crystallization reacti... |
Problem Statement: Fire calculations in safety cannot involve vapor evolution other than from vaporizing liquid. Currently the wetted fire calculations in the Safety Environment only support vapor-liquid phase equilibrium. | Solution: Currently the wetted fire calculations in the Safety Environment only support vapor-liquid phase equilibrium.
Systems where vapor is produced in other ways (most notably amine systems where a reversible chemical reaction will take up acid gases) will not complete a wetted fire calculation because the vapor... |
Problem Statement: How to get rid off the following error code 1008 message The base load token license not yet checked out by the SLM Base Load Token Service when launching Aspen PIMS? | Solution: In order to get rid off the following error 1008 message:
Please start/restart the Aspen Baseload Service and Sentinel RMS License Manager Services on the license server and launch Aspen PIMS from the client machine.
This should force the Baseload Service to check out the baseload token and the error 1008 s... |
Problem Statement: After installing Windows 10 Version 20H2, the Aspen Properties Enterprise Database (APED) Manager middle pane is blank.
The exact version is
Edition Windows 10 Enterprise
Version 20H2
Installed on 4/5/2021
OS build 19042.867
Experience Windows Feature Experience Pack 120.2212.551.0
The Database Ma... | Solution: The missing pane can be resolved by copying the file mmc.exe.config from C:\ProgramData\AspenTech\APED V12.0 to C:\Windows\SysWOW64 (Modify path to match the version you are using).
Alternatively, back up the existing file, then add the following missing lines from the mmc.exe.config file in the APED folder... |
Problem Statement: Is there a way to manually set the status of 'Shifted' or 'Changed' on a file set in Aspen InfoPlus.21 (IP.21) apart from performing a manual file set shift or writing to a file set? Is there a history-related tool that could be run or setting that could be selected? | Solution: At the time of this writing (November 2020) there is not a tool that can perform these actions. This has been confirmed with AspenTech Development.
Keywords: fileset
References: None |
Problem Statement: How do I use Aspen Mtell Health Check Script on a user machine? | Solution: Aspen Mtell Health Check Script will allow customers to get Machine Learning agent information report from the Mtell Server, please find attached example. The PowerShell script can be executed on any Mtell client machine to generate a CSV file.
1. Download Mtell Health Check Script.zip
2. Extract the zip fil... |
Problem Statement: What are the units for the Langmuir-Hinshelwood-Hougen-Watson (LHHW) pre-exponential factor and equilibrium constant? | Solution: The pre-exponential factor in the LHHW rate expression has very complex units which depend on the concentration basis selected, whether a reference temperature is specified, and the degree of concentration dependency of the driving force and absorption terms. The concentration is converted to SI units before ... |
Problem Statement: Why can I not find many of my IP21 tags when searching through Map Sensors?
Users may also get the following error message when trying to map sensors:
Unable to load tags. Error reading definition record (ID=116) fixed fields. Access Denied | Solution: Aspen Mtell uses the TextViewDef definition record query in to search for all the tags in Aspen IP21. All the sensor definitions need to be added in the All tags query record. Please have your IP21 administrator follow the steps below
1. Launch Aspen InfoPlus.21 Administrator
2. Click Find and select InfoPl... |
Problem Statement: When running a stored procedure record in the SQL Plus Query of Aspen Process Data add-in, If we entered a regular Excel date format into the referenced date cell as date parameter, it will display the error Error:ProcessDataFunctions::ATSQLPlusQuery: DAY field out of range when converting CHARACTER ... | Solution: The add-in does not transform the stored procedure's parameters into a different format. What you can do is to use Excel's function to convert the Date format into the SQLplus needed Text format into another cell and use that cell to input into Excel add-in. The error will be resolved after this procedure.
H... |
Problem Statement: How to change the Regression Type of the XY Chart's regression equation on A1PE? | Solution: Here is the procedure.
1. Select the RegEqn on the tag legend area, then click the Edit button on the fly-out.
2. Select the Trend Type tab, change the Regression type to the desired one. The regression type includes Linear, Quadratic, Inverse, Logarithmic, Exponential, and Power.
3. Click OK and the regres... |
Problem Statement: I'm getting the following connection failed message, related to SSL Security error: | Solution: If your registry settings for SSL3.0 are set to the following, you will not be able to connect. This applies only to SSL 3.0 (not 2.0). Here are the keys which will cause the connection issue for SSL 3.0:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Protocols\SSL 3.0]
[HK... |
Problem Statement: When installing or upgrading to V12 for the APC Web Server on a Windows Server 2012 R2, the following symptoms were observed:
Connecting to web clients like the PCWS Web Page results in HTTP Error 503 on the web browser
In IIS Manager, the application pool AspenAPCAppPool would go into Stopped state ... | Solution: The root cause of this issue seems to be an incompatibility for Windows Server 2012 R2 with the Microsoft .NET Core version 3.1.2. This can be resolved by installing the more recent version (as of June 2021) of ASP.NET Core Runtime v3.1.16 Hosting Bundle, which can be downloaded from here: https://dotnet.micr... |
Problem Statement: Is it possible to use an HTRI block from the Aspen Plus user interface? | Solution: The recommended method is to use the HTRI Cape Open-Aspen Plus CAPE-OPEN connection in Aspen Plus. HTRI-IST has been replaced by the CAPE-OPEN interface. HTRI has a CAPE-OPEN interface, which plugs nicely into the Aspen Plus CAPE-OPEN socket. There is a CAPE-OPEN HTRI 32-bit version for Aspen Plus V10 and ea... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.