question stringlengths 19 6.88k | answer stringlengths 38 33.3k |
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Problem Statement: Example of a DeButanizer column in Aspen HYSYS Dynamics. | Solution: The example is for a DeButanizer column to run in dynamic mode in Aspen HYSYS. There are two feed streams, each of which is a mixture of light hydrocarbons. The overhead product is a butane rich stream, and the bottom product is a mixture of heavier hydrocarbons.
The column has 15 stages. The feeds are conne... |
Problem Statement: This knowledge base article describes on how to use to Advanced Filter Panel in SCM | Solution: Home Tab > Advanced Filter Panel
Users can use the Advanced Filters panel to filter which data is shown in the screen. The user can filter the data by values or by the data dimensions. The filters that display in the Advanced Filter panel depend on the screen.
Note: When users apply a filter to a screen usi... |
Problem Statement: How to define the bundle inclination in Aspen Air Cooled Exchanger? | Solution: We can model this in Aspen Air Cooled Exchanger by entering the ‘Tube side flow direction’ and the ‘Angle of outside flow’ on the Input | Exchanger Geometry | Unit Geometry tab.
The ‘Angle of outside Flow’ is assumed to approach the face of the tube bundles in the perpendicular direction. Consequently, the ... |
Problem Statement: This knowledge base article describes on how to configure Data Display using View Settings Panel | Solution: Display table or chart data in the Workspace.
On the Home tab, in the Panel group, click View Settings Panel. The View Settings panel appears on the right side of the workspace.
Select the desired options in the Format section and Rows and Columns sections.
Click Apply.
The table or chart data updates in the ... |
Problem Statement: Pool boiling is defined as boiling from a heated surface that is submerged in a volume of stagnant liquid. If the temperature of the liquid is below the saturation temperature the process is known as subcooled or local boiling. If the liquid is maintained at saturation temperature then the process ... | Solution: In the diagram below, different representations of boiling are shown for increasing wall superheat or heat flux.
Single phase (Natural convection): Temperature gradients are set up within the pool and heat is removed by natural convection from the surface. The liquid near the heated surface is slightly... |
Problem Statement: This knowledge base article documents how to multi-change the scale of a group of tags within aspenONE Process explorer. | Solution: Within aspenONE Process Explorer legend area you can select multiple trends with the tick boxes located on the left-hand side of the legend area.
Once selected you can change the scale of any of the selected trends which will then change all selected trends to the new scale as shown in the example below.
Keyw... |
Problem Statement: How to customize Model Summary in Aspen HYSYS? | Solution: The Model Summary in Aspen HYSYS provides summary of stream results and unit operation data in tabular format. This is similar to Workbook but has much more advanced features, is customizable, and can be exported to Excel.
The Model Summary is available under the Home ribbon in Aspen HYSYS as highlighted bel... |
Problem Statement: How do you run the Refinery Reactor models on a 32 bit operating system? | Solution: The 32 bit machine by default only allocates up to 2 GB of memory for any given application, whereas 64 bit operating system allows up to 4 GB for a 32 bit application. The 32 bit operating systems have a flag that can be set to allow an application to use up to 3 GB for an application. This is critical for t... |
Problem Statement: What is this warning and how this can be eliminated? | Solution: This warning message will appear if you select “TEMA F and F EJ Line Element FEA interface” option expansion joint calculation as shown below.
TEMA F and F EJ Line Element FEA interface EDR now interfaces to the TEMA flanged-and-flued (thick wall) expansion joint Line Element Finite Element Anaylsis softwar... |
Problem Statement: How do I resolve error code: -939519994?
When launching an application like Aspen Plus or Aspen HYSYS, you may get an error message stating: "The licensing system has licensing resources that could satisfy the request, but they are not available at the time of the request."
Here is an example of the... | Solution: This error comes up if you are running out of tokens. You can use SLM License Profiler to check the number of tokens available to use.
Step 1: Click on Start --> All Programs --> AspenTech --> Common Utilities --> SLM License Profiler
Step 2: Select your license server
Step 3: Check the SLM_Pool and see if yo... |
Problem Statement: How do I obtain critical properties values from Excel VBA? | Solution: The code for accessing critical properties utilities are given below. Please refer KB solution 112361 for more information on VBA automation for linking Excel to Aspen HYSYS.
Option Explicit
Dim hyApp As HYSYS.Application
Dim hyCase As HYSYS.SimulationCase
Dim hyFlowSheet As HYSYS.Flowsheet
Dim hyUtility As H... |
Problem Statement: Why is there no condensation calculation when using gas on the outside of the Aspen Air Cooled Exchanger? | Solution: Dry gas is appropriate for waste heat recovery units where gases such as flue gases are being cooled. Also for any exchanger where gases other than or including air are handled. It should be noted that Air Cooled Exchanger cannot handle condensation of any of the components of the gas stream. However, if cond... |
Problem Statement: How do you simulate an air cooled exchanger in Aspen HYSYS with fan speed to control the process side outlet temperature? | Solution: In Aspen HYSYS you can control the process side fluid temperature with fan speed control. However, the fan speed cannot be connected directly with the PID controller output. The workflow would to link the demand speed in a cell inside a spreadsheet. This can be done by the drag and drop method.
The cell li... |
Problem Statement: What do the Wegstein Parameters of the Recycle represent? | Solution: The Wegstein Parameters are located under Parameters tab | Numerical page.
The four Wegstein Parameters and their meanings are described below.
Acceleration Frequency
The number of iterations before and acceleration step is applied to the next iteration. After this many interations, the assumed values a... |
Problem Statement: What is the function of the Tolerance Sensitivities in the Recycle operation in Aspen HYSYS? | Solution: HYSYS allows you to set the convergence criteria factor for each of the variables listed under the Recycle Parameters | Variables. The tolerance values you input serve as a multiplier for Aspen HYSYS internal convergence tolerances.
For example, the internal tolerance for Temperature is 0.01 and the defau... |
Problem Statement: How do I find the build number of the Aspen HYSYS simulation case? | Solution: In Aspen HYSYS V9 there is a new type of File Open dialog called "HYPROTECH file picker" added. This is available under File | Options. Refer the screenshot below.
With this new File Open dialog the user will see the build number of the original HYSYS file as shown below.
Keywords: File Open Dialog, HYPROT... |
Problem Statement: I am upgrading a file in Simulation or Rating mode that has "User specified properties" in both vapor and liquid phase, from V8.4 to any newer version.
The results of the overall film coefficients do not match between versions, the key results as area ratio or outlet temperatures are inconsistent bet... | Solution: This error can happen when values entered manually for Vapor mass fraction has been omitted as shown in the screenshot below:
Even though there are only vapor properties, and that the vapor mass fraction would be 1, if this value is left empty, the program could perform an extrapolation of the properties, t... |
Problem Statement: Can I password protect my AICE project? | Solution: No, this functionality has been only implemented for Aspen Capital Cost Estimator.
Users will not be able to set, change, or remove a project password in AICE. However, AICE will prompt the user for the password if a user opens a password protected ACCE project in either AICE.
Keywords: Password, AICE, Proje... |
Problem Statement: How do I find the wall temperature of pipe in Aspen Hydraulics? | Solution: To obtain the wall temperatures the user first needs to configure the detailed heat loss model in the pipe segment.
When the Hydraulic flowsheet is converged the temperature profiles will be shown in the Insulation page under the Performance tab as shown below.
Keywords: Wall Temperature, Pipe in Hydraulic... |
Problem Statement: This article explains why the basis date changes each time the same start and end date is used when searching for pattern basis. | Solution: All modern high-speed search algorithms make use of the assumption that their data sets are evenly spaced. Therefore, when we query data out of our user’s historians, we do so with a specified interpolation interval.
１[Labelled here as ‘Sampling Interval’]
We also allow our users to specify a historical ti... |
Problem Statement: An example of reactive distillation in Aspen HYSYS | Solution: This example case simulates the synthesis of Methyl Acetate from Methanol and Acetic Acid in a catalytic distillation column. The feed conditions and composition are as follows:
Temperature 75°C (165°F)
Pressure 101.3 kPa (14.7 psia)
Molar Flow 45 kgmole/h (100 lbmole/hr)
Composition - M... |
Problem Statement: How do I find the Coversion of Hydrocracker products and how is the conversion calculated? | Solution: The hydrocracker product yields are available under the Results page as shown in the screenshot below.
The conversion is calculated as follows:
Conversion weight % = 100 x (light products + distillates) / feed mass flow rate
Conversion volume % = 100 x (light products + distillates) / feed volume flow rat... |
Problem Statement: The file size keeps increasing when running the dynamic simulation. How do I reset the file to its original size? | Solution: The dynamic simulation typically contains several strip charts to display the process conditions with time. As the Dynamic simulation runs, the data histories fill up with time. The number of data each variable can store depends on the logger size. The default size is 300. The default option can be changed fr... |
Problem Statement: What are the differences between the various heat exchanger models? | Solution: There are four shell and tube heat exchanger models available in Aspen HYSYS. The Simple End Point and Simple Weighted models can be used for material and energy balance for any two-sided heat exchangers. They can also be used for shell and tube exchangers material and energy balance. Simple Steady-State Rati... |
Problem Statement: How do I configure a PID controller with multiple process variables and one control valve? | Solution: You can only connect one process variable (PV) to each PID controller in Aspen HYSYS. If you need two PV then this can be configured with two PID controllers and the output (OP) from each can be connected to a selector block. The output from the selector block can be linked with the control valve.
The sele... |
Problem Statement: Sometimes when generating side by side case comparison report in Periodic PIMS (PPIMS) model for multiple cases, this warning message may appear and is this related to any range setting in PIMS? | Solution: This message appears when you run would like to generate case comparison report side by side in P-PIMS, but . different cases have different no of periods. For example, case 100 running 3 months , Case 200 running 2 months , case 300 running 1 month. So it is not feasible to generate case 100-300 side by sid... |
Problem Statement: In APS/MBO versions V9 and V10, when the model is archived, the Units file and the SMC folder are not being included. | Solution: This is known to occur in APS/MBO versions V9 and V10, when the Relative path is used for the Units file/SMC folder instead of the absolute path, as shown below:
This has been fixed in V11 of APS/MBO.
Keywords: None
References: None |
Problem Statement: After installing Office 2013 patch KB 4484190, and reloading simulator or trying to simulate in Aspen Petroleum Scheduler, users get error E2044 “Unable to find Excel worksheet” when working with multi-workbook models. | Solution: Microsoft has changed how Excel handles which workbook is active when multiple workbooks are open, which generates the error after the Office patch has been installed. As a workaround, you will need to add the following code to the SECOND workbook in your model:
Private Sub Workbook_Open()
Dim defaultUnitW... |
Problem Statement: Recommended procedure for setting up Aspen OnLine RTO Environment for V10 | Solution: The attached document describes the recommended procedure for setting up Aspen OnLine / RTO server on Windows Server 2016. It should be applicable to Windows Server 2012 as well.
This document assumes that AspenTech software products are installed under “C:\Program Files (x86)\AspenTech”.
It is also assumed... |
Problem Statement: How to change pre-configured object symbol type in drawing editor? | Solution: In case user needs to change pre-defined symbol type in drawing editor, it can be proceeded in Explorer
The following snapshot is a sample with Centrifugal Pump.
By changing the symbol name(e.g. 'Screw') in the following two paths , then your centrifugal pump is now changed to Screw pump symbol in Drawing edi... |
Problem Statement: Users receive the following error Message "Aspen AFR has encountered an error and will be closed" when attempting to launch Aspen Fidelis Reliability including this dialog box pop up:
Workaround
This error is due to the log file "user.config" becoming corrupted and once that happens Aspen Fidelis R... | Solution: Manually delete the bad user.config file which can usually be found in a sub-directory under C:\Users\<username>\AppData\Roaming\Aspen_Technology,_Inc
Fixed in Version
VSTS 488400: Targeted for fix in a future release
Keywords: user.config file, crash on open, AFR encountered error
References: None |
Problem Statement: You could see this error on opening the Aspen APC Web page /PCWS after a new install.
"Your session failed to start for the following reason:”
Could not connect to the Aspen APC Web Provider Data Service.
Please wait for the Aspen APC Web Provider Data Service to complete initialization.
Verify th... | Solution: The problem is that the install program registered BOTH the 32bit and the 64bit versions of AFWSecCliSvc.exe and now the COM registration has a conflict.
To fix this situation, do the following:
Stop everything that accesses the AFW Security Client Service (you may not have all these on your server):
Aspen... |
Problem Statement: Process Data Configuration for Third Party Historians | Solution: The attached documentation article explains how to set up AspenTech products to be able to get Plant and Process Data from a Third Party Historian on Plant Data tool.
Keywords: data, third, historian, plant, configuration
References: None |
Problem Statement: Starting from V10, a DMCplus controller with SmartStep enabled cannot run in Multi-Step mode. When trying to run you will see the message "Advanced license needed for Multi-Test mode" in the Web Viewer when the controller is turned ON. | Solution: This is by design. From V10, Multi-Step mode for SmartStep is only available for Aspen DMC3 controllers. Aspen DMCPlus controller wilth SmartStep enabled can only run in Single test mode.
Keyword
SmartStep, Multi-Step, DMC3
Keywords: None
References: None |
Problem Statement: When using the Aspen Cim-IO Store File Recovery Utility, the following error message is logged in the Cim-IO log file.
29-MAR-2012 12:03:51.302, Logged by TSK_RECVR on node IP21SERVER:
WHIS21DAT: Inserted only 0 of 100 elements into recid 5025, fieldid 605618177, tag [PI26-2401/CI1.PV], sample error... | Solution: The mentioned" error -81" refers to the error returned by the Aspen InfoPlus.21 routine WHIS21DAT.
WHIS21DAT detected "Insufficient privilege (s) to access the database". It is the first error trapped while attempting to output the 100 occurrences reported in the error message. In this case, none of the occu... |
Problem Statement: While installing Microsoft .Net Framework 4.6.2 on a machine which does not have internet access, you may encounter "A certificate chain could not be built to a trusted root authority" | Solution: 1.Download certificate：MicrosoftRootCertificateAuthority2011.cer from below link.
http://download.microsoft.com/download/2/4/8/248D8A62-FCCD-475C-85E7-6ED59520FC0F/MicrosoftRootCertificateAuthority2011.cer
2.Go to Start→Run→MMC
3.Go to File→Add/Remove Snap-in... (Ctrl+M)
4.Double click on "Certificates"→s... |
Problem Statement: “Install aspenONE products” option is gray out in aspenONE Engineering V10 Installer.
However, this option is working in aspenONE Manufacturing and Supply Chain V10 Installer. | Solution: Since V9.0, AES products no longer support 32-bit operating system. But we did not disable “Install aspenONE products” option in the installer.
In V10, we have disabled “Install aspenONE products” option in AES installer, but this option is still available in MSC installer as CIM-IO interface can be installe... |
Problem Statement: While I was at PIMS training the HTML reports like Full | Solution: would open up with links on the left side to each and every section of the report. These are quite useful and I would like to set my model to show them as well.
Solution
This option is called HTML Reports with Frames. It is not model, but individual PIMS instalation specific. It can be enabled by going to To... |
Problem Statement: Difficulty in getting a RadFRac column with multiple precipitating salts to converge. | Solution: This is a difficult problem in general because each salt may or may not precipitate and RadFrac may encounter difficulties on a path where one salt is precipitating while the solution precipitates a different salt.
On the RadFrac Convergence | Basic sheet, set the Salt precipitation handling method to Ignor... |
Problem Statement: What Programming Language(s) are used in Aspen HYSYS? | Solution: Aspen HYSYS is written using different programming languages, this KB article will explain with more detailes how they are used.
In general, the engine portion of the code is programmed in C++, C, HTML and Javascript. The most of engine is written in C++ and in some cases in C. The HTML and Javascript are ve... |
Problem Statement: Below table lists which MES suite applications have been localized: | Solution: Note： IP.21 Process Browser and IP.21 Mobile were sunset in V10
Keywords: A1PE
APRM
APEM
APEX
SQLplus reporting
RBV
Localization
References: None |
Problem Statement: What are the recommended property packages for solubility of gas in water in a hydrocarbon system? | Solution: Peng Robinson is generally recommended as the property package of choice in Aspen HYSYS for any hydrocarbon system. However, in some cases the PR equation can consider the water solubility of Hydrocarbons to be a little low.
If hydrocarbon solubility in the aqueous phase is important, then the user can use th... |
Problem Statement: What is the purpose of "Loadls.exe" and how to use it? | Solution: Loadls.exe is an executable installed by default on the location: C:\Program Files (x86)\Common Files\SafeNet Sentinel\Sentinel RMS License Manager\WinNT and it will add or remove the Sentinel RMS License Manager service to the Windows NT System Service registry, which is the service that broadcast the networ... |
Problem Statement: This knowledge base article describes the steps to run Aspen SCM in administrator mode. | Solution:
1. Open Aspen SCM from Windows
2. Right click on Aspen SCM icon and select open file location
3. Click on properties
4. Click on compatibility tab and select Run as administrator.
Keywords: None
References: None |
Problem Statement: I want to design an Excel front end to input products distillate Data, and then these data will be passed to HYSYS, and then automatically characterized to generate crude components. The Assay data is configured as a backblend of different product distillation data, but I am unable to access the inpu... | Solution: When attempting to access assay data configured on a stream as a backblend of several product cuts, the assay data input is not exposed a variable in Aspen simulation workbook. Once way to workaround this is to use the use the macro-cut or single stream properties input options to enter the data. These assay ... |
Problem Statement: Offline-to-Online Fails with Error Message saying 'specified cast not available'. How can I fix this? | Solution: This is an error message that is most likely due to multiple versions of Aspen Plus and Aspen Online installed. Since V9, Aspen Online only works with a comparable version of Aspen Plus, as a result when working in an Aspen Online V9 project, only Aspen Plus V9 files are compatible. During the offline-to-onl... |
Problem Statement: A1PE server as a directory server may configure multiple data sources in ADSA. Although You had deleted one of data sources from ADSA, the deleted data source is still showing when doing tag search in A1PE.
This article provides a workaround to remove the deleted data source in A1PE search list after... | Solution: The tags for the data source can be removed using below URL issued from A1PE server.
http://localhost:port/solr/update?stream.body=<delete><query>tag_datasource:ds</query></delete>&commit=true
- port is Tomcat HTTP port, e.g. 8080
- ds is the data source name for the tags to delete
KeyWords
deleted data... |
Problem Statement: How can I access the local temperature (i.e. temperature at a specific location) of an RPLUG unit operation in a calculator block? Which variable would I use? | Solution: REAC-TEMP is the correct variable, and the ID1 field signifies the specific RPLUG location that the temperature is pulled from:
Note: By default, the RPLUG block profile is divided into 10 intervals:
Given 10 intervals, a total of 11 points (i.e. n + 1) are reported in the RPLUG Profiles:
Note, the u... |
Problem Statement: A closed propane refrigeration solves in Sequential Modular mode but when switching to Equation Oriented mode it fails. | Solution: A closed loop flowsheet can not be modeled in EO the same way as it is modeled in SM. In SM the solver uses an efficient way to create a tear stream and solve the flowsheet to converge at the tear stream location. The same model in EO mode will return several non-linearity errors due to the closed nature of t... |
Problem Statement: Can I set the Aspen Plus HEATX exchanger specification using a Calculator block? | Solution: The HEATX block Setup | Specifications sheet contains a “Specification” field, wherein the user can specify the Exchanger duty, Hot stream outlet temperature, etc.
A Calculator block cannot directly set exchanger the specification field. However, it can override it (the effect is the same). As an example... |
Problem Statement: “PIMSWIN MFC Application has stopped working” when run case comparison report.: | Solution: The problem is with the apostrophe in the model name.
The case comparison code does not like this special character and fails in PIMS V10.
The workaround is to remove the apostrophe from the model name and also from any part of the model location.
KeyWords
PIMS crash, V10, case comparison
Keywords: None
Refe... |
Problem Statement: This article explains what is the PROWS report, how to generate it and how to access it in Aspen PIMS. | Solution: PROWS – Process Submodel Parameter Rows
The PROWS solution spreadsheet (.xls) file contains all the information that is contained in the P-ROWS of submodels.
It allows to easily see all P-ROWS in the model and their values for each submodel.
To generate this file:
Click Reports… in Model Execution Dialog box... |
Problem Statement: Calculator blocks let you insert Fortran statements into flowsheet computations to perform user-defined tasks. Under certain circumstance, the following message can appear after running the model:
* WARNING DURING FLOWSHEET ANALYSIS
FORTRAN READ-VAR X IN FORTRAN BLOCK Y
APPEARS ON THE L... | Solution: This message is related to the Calculator variable definition. The user specifies as the import variable a variable that should be an export variable or vice versa.
Where:
Import Variables establish information flow from the block or stream containing a sampled (read-only) variable to the Calculator block.
... |
Problem Statement: I want to utilize multiple property methods inside my Aspen Plus simulation. How can I control which property methods get used in different parts of the simulation? | Solution: The flowsheet default property method can be specified in the Methods | Specifications | Global form:
To utilize a different (non-default) property method in a certain portion of the flowsheet, the user could select a group of unit operations and streams, right-click the group, then select Change Section: ... |
Problem Statement: Users would like to change the Date Time Axis configuration on Planning Board. | Solution: Go to Planning Board.
Right Click on the time axis to bring up the Properties tab.
You can change the Behavior mode from Automatic to Fixed.
Select the desired options from Available tiers.
You can also Change the Step, Text Alignment and Display Format.
Keywords: None
References: None |
Problem Statement: How can I specify the Overall U for a Heat Exchanger on Aspen Energy Analyzer (AEA)? | Solution: By default, AEA calculates the Overall U based upon the stream side film coefficient (HTC), which in turn is calculated by using stream properties. For further details, refer to the article Where can I find the equations used to calculate HTC?
However, you can edit the Overall U for any desired exchanger fol... |
Problem Statement: This article explains how to solve the error message “Failed to load UBML library” in Aspen Petroleum Scheduler. | Solution: This error message usually appears when the Microsoft Visual C++ Redistributable is missing for the Visual Studio version the UBML.dll was compiled with. For example, if the user built UBML.dll was compiled with Visual Studio 2010, verify you have downloaded the corresponding 2010 runtimes in the machine.
Ad... |
Problem Statement: This knowledge base article describes on steps to add a planned downtime in the model. | Solution: Planned Downtimes:
The Planned Downtimes screen allows you to specify times when a resource will be down for some type of downtime, such as planned maintenance or holidays. It is assumed that no hours are available on the resource during the Planned Downtime period.
To specify planned downtime:
From the Navig... |
Problem Statement: This article explains how to modify the parameter values for ABML correlations in Aspen Petroleum Scheduler (APS), Aspen Refinery Multi-Blend Optimizer (MBO), and PIMS-AO. | Solution: Parameter values for ABML correlations can be modified in the Correlation dialog box in APS (Models > Blend Library Coefficients…)
If these same parameters wish to be modified in PIMS and the correlation has no option section to modify the parameters in the completeabml.xls, this can be added in ABML tabl... |
Problem Statement: This article shows where in the database notes defined in General Model settings will be stored. | Solution: Notes defined under General Model Settings can be found in table PrCase.
Table PrCase:
The notes are added for all the cases selected for that particular run. These are the same notes shown in the reports.
Keywords: PIMS,
References: None |
Problem Statement: Which method can I use for Electrolytes and Polymers interaction? | Solution: Aspen Properties can handle processes where both electrolytes and polymers co-exist (along with other products). The property method which better handles and represents all of these components interactions is the EP-NRTL Activity Coefficient Model.
The Electrolyte-Polymer Non-Random Two-Liquid (EP-NRTL, mode... |
Problem Statement: Aspen SCM rejects the value change in Duration field of Activity Editor and the value reverts to previous one. | Solution: Open AECTL1 and configure the AE table that controls the contents of the tabs in Activity Editor to set the TYPE as TIME for DURATION. See below example:
Keywords: None
References: None |
Problem Statement: This article explains what is the SDMAP report, how to generate it and how to access it in Aspen PIMS. | Solution: SDMAP – Stream Disposition Map
The SDMAP solution spreadsheet (.xls) file contains the full stream disposition map with stream quantities filled in for the solution for each unit in the model.
Rows display process streams, while columns display the units in the model with the submodel four-character tag. Posi... |
Problem Statement: This article explains what is the UTMAP report, how to generate it and how to access it in Aspen PIMS. | Solution: UTMAP – Utility Disposition Map
The UTMAP solution spreadsheet (.xls) file contains the full utility disposition map with utility quantities filled in for the solution.
This file will display utility consumption and production for each unit. Rows will display the units, while columns will display the utilitie... |
Problem Statement: This article explains what is the SDSUM report, how to generate it and how to access it in Aspen PIMS. | Solution: SDSUM – Stream Disposition Summary
The SDSUM solution spreadsheet (.xls) file contains the output of the stream disposition summary in spreadsheet form. The following concepts are reported for each stream:
Purchased amount
Amount processed (+) or produced (-) in submodels.
Amount destined for blending (+) or ... |
Problem Statement: What are hcr files in contrast with hsc files? | Solution:
The file type hcr is particular to the Hydrocracker model. Aspen HYSYS has got other models (particularly for petroleum refining) with their very own file format, such as the hydrocracker, FCC, reformer, etc.
On the other hand, the hsc format is the standard HYSYS simulation file. The hsc file can conta... |
Problem Statement: This article explains what is the PRMAP report, how to generate it and how to access it in Aspen PIMS. | Solution: PRMAP – Stream Property Report
The PRMAP solution spreadsheet (.xls) file contains all the properties for all streams in the model. There is no report for recursed pools that are not actual streams.
Rows will show the streams while columns will show the properties in the model.
To generate this file:
Click Re... |
Problem Statement: There are many nomenclature and rules to follow when modelling PIMS. This article is to summarize the important rules and nomenclature in PIMS modelling. | Solution: Please see attached documents for the summary of commonly asked modelling rules and nomenclature in PIMS. The targeted audience of this article is the PIMS users who have basic understanding of PIMS model structure.
Keywords: Submodel, placeholder, 999, -999, pool collector, material balance, utility balance,... |
Problem Statement: What is the correlation used to calculate the Mean Average Boiling Point [Petroleum] property? | Solution: The Mean Average Boiling Point or MeABP is a property based on TBP.
It is calculated as follows:
MeABP=(MABP+CABP)/2
Where:
MeABP = Mean Average Boiling Point, °Rankine
MABP = Molar Average Boiling Point, °Rankine
CABP = Cubic Average Boiling Point, °Rankine
MABP is molar basis and CABP is volume ba... |
Problem Statement: How to correctly export hypocomponents from Aspen HYSYS to Aspen Plus. | Solution: When exporting fluid package from Aspen HYSYS to Aspen Plus some components could have problem in being mapped property and Pseudocomponents are created. They need to be defined manually in Pseudocomponents form, which is incomplete. The missing information of Boiling Point, Gravity and Molecular Weight can b... |
Problem Statement: How to clear Recent Models window in Aspen HYSYS | Solution: When opening Aspen HYSYS, there is a default window showing recently opened files.
To clear the Recent Models form please follow these steps:
Close all Aspen HYSYS files.
Go to C:\Users\username\AppData\Local\Aspen_Technology,_INC.
Note: you may have to enable "hidden folders" on your computer to see th... |
Problem Statement: In HYSYS Hydraulics, should I specify dry, moist, or wet clay? | Solution: The difference between dry, moist, and wet clay/sand is the extent of water-saturation of the clay/sand medium. The presence of water affects the thermal conductivity of the clay/sand; the more water contained therein, the greater the thermal conductivity utilized for heat transfer calculations:
Keywords: No... |
Problem Statement: How can I specify the number of shells for a Heat Exchanger on Aspen Energy Analyzer (AEA)? | Solution: The total number of shells is calculated by multiplying the number of shells in series and the number of parallel shell passes. By default, AEA auto-calculates these two parameters based on the maximum area per shell specified for the unit.
To modify these values, go to the HEN Grid Diagram and double-click t... |
Problem Statement: I want to utilize different solid heat capacity parameter values in different equipment blocks. How can I do this in Aspen Plus? | Solution: A user can create a property method which utilizes a different set of solid heat capacity parameters. After creating a method named, for example, “SOLIDS2”, the user could then go to the Selected Methods folder, click on the SOLIDS2 Models tab, and specify that Property “HS” takes its values from Data Set 2:... |
Problem Statement: If you try to use the Data Extract from Aspen Plus/HYSYS, Aspen Energy Analyzer (AEA) will pop-up the following message:
How can I use the 'Data Extract from simulation' feature on AEA now? | Solution: Since aspenONE V8.8, the Data Extraction from simulator feature is no longer available in AEA standalone. You will need to use the Activated Energy Analysis within the simulator and then transfer the heat integration data to Aspen Energy Analyzer standalone.
Jump Start Guide to Activated Energy Analysis in As... |
Problem Statement: What does the "Load usrdmo" do when it is activated from File | Options | Equipment? When can it be useful to activate it? | Solution: This is an option added in V7.2. When activated, it loads the usrdmo library when you start the HYSYS session. This is only useful if you are running into memory issues with the reactor models. For the most part, memory issues are better addressed by migrating to a 64-bit operating system (which allows an a... |
Problem Statement: Is it possible to view the TBP, ASTM D86 and ASTMD1160 curves for a stream in Aspen Plus? | Solution: In Aspen Plus, to show the TBP, ASTM D86 and ASTMD1160 curves for a specific stream follow these steps:
1. In the Simulation Environment, right click on the desired stream.
2. Select Analysis -> Distillation and click Go
3. In the Distillation Curve wizard, select the desired property to be displayed.
To ... |
Problem Statement: What should be done to fix PH Flash Failure errors caused by kinetic energy term included in the energy balance? | Solution: The problem is caused by the Solver of Flare System Analyzer during the initialization. When the first iteration of the energy balance takes place, if the kinetic term is very large, an inconsistency between the inlet and outlet velocities results in wrong stangnation enthalpy values, this is why the PH flash... |
Problem Statement: Users and modelers would like to export sets and tables from SCM to excel and they prefer to include/exclude headers. | Solution: In V10.0 SCM if you right click on a set/table you have the option Copy with Headers.
There is also a shortcut Ctrl+Shift+C
Keywords: None
References: None |
Problem Statement: When a custom database containing binary parameters is created, PRBKV and PRLIJ parameters are not automatically loaded to the simulation by design. This article shows how you can set PRLIJ parameters to load automatically once you have added the database to the simulation Properties Environment in A... | Solution: 1. Create the custom database containing binary parameters. In this example, a custom database called test has been created, which contains PRBVK and PRLIJ for the binary mixture methanol-water.
Note: for more information on how to create a custom database, please refer to solution 000025903.
... |
Problem Statement: When GDOT has an error reading a tag.parm we get the log file message: Read error for OPC item…. Followed by: Execution skipped due to bad values (<iteration count>).
Regarding at this how are the prediction handled after the read error stop and all variables back to good status. | Solution: For a bad CV, prediction continues as normal, but the prediction bias is fixed. Once the bad CV becomes good again, the bias update is simply resumed.
In the case of a bad MV, prediction continues as normal using any other MV that affects the CV and the bias is updated as normal. If there is no movement in an... |
Problem Statement: How to export a Component List and Fluid Package information from Aspen HYSYS to Aspen Plus. | Solution: To export a component list and fluid package from Aspen HYSYS to Aspen Plus go to Component Lists folder in Aspen HYSYS and highlight the one you want to export. Click on Copy button and select Aspen Properties option on the Component List Type window and click on Copy. A new Aspen Properties Component List w... |
Problem Statement: When you open the planning board and double click on an activity to bring up the activity editor, you may see the below message: | Solution: The issue is due to the AECTL1 not being fully configured. More specifically, the Split tab AESPLCTL control set AESMFG is not being filled for a lot of the facilities. Once those are filled, the error would be resolved.
Keywords: None
References: None |
Problem Statement: This knowledge base article describes on how to use Inventory Problems Report in Aspen Plant Scheduler | Solution: Inventory Problems Report
Inventory includes raw materials, work in progress and finished goods. Problems in inventory are usually inventory shortages that hinder production. Inventory Problems Report in Aspen Plant Scheduler can be used to view the inventory problems for the products associated with the sche... |
Problem Statement: How to activate debug logging for the Aspen InfoPlus21 History Backup task TSK_HBAK. | Solution: 1. Open the Aspen InfoPlus21 Manager
2. Locate TSK_HBAK in the defined tasks list and double click on it.
3. Edit the Command line parameters by adding "-d1"
4. Click Update
5. Stop and start TSK_HBAK
Keywords:
References: None |
Problem Statement: What products are new in aspenONE V10? | Solution: aspenONE Engineering Suite:
Aspen Basic Engineering Activated Datasheet
Aspen Plus Batch
aspenONE Manufacturing Suite:
Aspen Unified PIMS
Aspen Watch Centralized Monitoring
AtOMS Browser
AORA Data Service
KeyWords
License upgrade
ALDA
new license
V10
Keywords: None
References: None |
Problem Statement: The steam valve not working as designed in my Aspen Batch Modeler simulation. The pot temperature never increased to the set temperature. | Solution: You need to check the settings of the steam valve. Under "Controllers" - "SteamValve" - "Parameters", make sure the Action is set to "Rev" instead of "Dire". Action determines which way the output is moved in response to changes in the process variable. For Direct action, if the process variable increases, th... |
Problem Statement: This knowledge base article describes on how to perform Bulk Edit in SCM Data Viewer Screens | Solution: 1. Select the values to be modified.
2. Right click on the selected values and select Bulk Edit.
3. Select an operation in the Operation drop down list
4. Type in the desired value
5. Click Apply
Selecting “=” as the operation will set all selected values in the table equal to the typed value. Selecting “*”... |
Problem Statement: How do I model Insulated Vessel blowdown under Fire scenario? | Solution: Use the Stephan Boltzman Fire equation or fix an external heat flux using Applied Duty (just set C1 to a value and the remaining constants to zero). Add the insulation by using the 'detailed' heat loss model. Make sure you have checked the "Apply duty stream to outside wall" checkbox, which will ensure the fi... |
Problem Statement: Is there an easy way to export bulk variables from Aspen HYSYS into ASW? | Solution: The easiest way is using the Workbook found in the Home (ribbon) | Summaries. Please find below the procedure:
1) Under the Simulation environment, go to Home (ribbon) | Summaries | Workbook.
2) Right-click and "Select-All" the stream results for all the streams and then click on "Copy".
3) Afterwards, go ... |
Problem Statement: DMC3 Builder would crash upon opening an existing project. You have tried to recover the project following KB 46924 but were not successful, you suspect one of the datasets or the applications is corrupted. | Solution:
Recovering corrupted datasets:
To reconstruct a corrupted dataset (most likely you will lose global slices, and the dataset name in the process), do the following.
Open a new project in DMC3 Builder.
Click on the Datasets node and choose Import Dataset and Import any example dataset file like the crude.clc d... |
Problem Statement: What is the meaning of double banking in the plate exchanger? | Solution: In a normal (i.e. single banked) plate heat exchanger the hot and cold streams flow in alternate channels ensuring that any two adjacent channels contain hot and cold streams. In a double banked plate heat exchanger some of the hot (or cold) channels are adjacent to each other.
The Plate program can handle bo... |
Problem Statement: How to check if Report Writer has the same output in V11 as old version? | Solution: You will need to run the same model and publish results in the same way. This is a pre-requisite for getting the same report from Report Writer. After you made sure the results are the same in the model, you can go to Excel and run Report Writer to generate the reports. Here is a general guideline on how to d... |
Problem Statement: How to customize generation of Hypos in the petroleum characterization?
Quite often the default settings in Aspen Plus will suffice to model petroleum assays in flowsheet simulations. Typically, based on the distillation data provided by the user, a working TBP curve is generated by Aspen Plus engin... | Solution: In the attached file (characterized.bkp) identical ASTM D2887 data have been provided for the two assays “cuts” and “simple”.
The petrocharacterization solver has optimized the fractions of pseudocomponents as shown in the screen shot below for the “SIMPLE” assay:
And similarly for the “CUTS” assay as s... |
Problem Statement: In V11, how to workaround the issue when sometimes PIMS model run fine for a while, returns optimal solution, and then the entire application exists on itself? Everything disappeared suddenly and exits to desktop. | Solution: This is a known issue in V11 and will be fixed in CP1. The workaround for now is deselect "Create !PGUESS_AO Excel file" in Model Settings -> Reporting -> Outputs.
This issue only occurs in V11 AO and none of the other versions. You may find your model running well in old versions and V11 DR, but when the a... |
Problem Statement: Using DMCplus Simulate gives a different solution than DMC3 Builder Simulation in some cases. | Solution: The simulator inside DMC3 Builder is using the predicted values from the controller engine to wrap around the next values of the CV, rather than using an internal plant model as DMCplus does. This was done to improve the efficiency of the simulator and it works well most of the time. However, it can introduce... |
Problem Statement: On a multi-CPU server (either physical or virtual), AspenTech recommends setting the affinity of all Aspen Infoplus.21 related processes to the same CPU or possibly placing all the Aspen InfoPlus.21 server API tasks (TSK_ORIG_SERVER, TSK_ADMIN_SERVER, TSK_APEX_SERVER, TSK_EXCEL_SERVER, TSK_DEFAULT_SE... | Solution: Windows Powershell allows you to change the affinity of running processes. The general command is:
$Process = get-process ImageName; foreach ($p in $Process) {$p.ProcessorAffinity=CPUNum}
where ImageName is the name of an executable image
and
CPUNum is the CPU number on which you want to the image to run.
· ... |
Problem Statement: Aspen Capital Cost Estimator (ACCE) V10 New 8 Digit Externa Code of Accounts (COA) File | Solution: A new 8-digit external Code of Accounts (COA) file is now included in the out-of-box installation of Economic Evaluation products. This external COA named ‘AspenTech_8Digit’ defines and allocates detailed code of accounts for equipment, piping, civil, steel, electrical and instrumentation bulks. Having a de... |
Problem Statement: Aspen Calc has formulas that rely on components from Aspen Properties. For v11, Aspen Properties has discontinued their 32-bit version and replaced it with 64-bit components. Aspen Calc has updated their components (and associated formulas) to work with the new 64-bit component from Aspen Propertie... | Solution: The steps to pre-process the aromatics.aprbkp file are provided in the attached document, entitled ‘Configuring Aspen Calc to Integrate with Aspen Properties.docx’.
Please download and review it to learn about the Best Practices to follow when integrating Aspen Calc with Aspen Properties.
Keywords:
Reference... |
Problem Statement: How do I log in to access support resources in aspenONE Exchange? | Solution: aspenONE Exchange is a feature that is integrated in Aspen products.
To run aspenONE Exchange, click the All Content button within the Aspen Product.
All content that is available within aspenONE Exchange will display. If the content is not displaying, review KB 92409 and verify your computer can access t... |
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