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Problem Statement: What are the recommended parameters to monitor with regard to APC applications' health on each server? | Solution: The table listed below is also available in the attached document, and it outlines the important processes, log files, parameters, etc. that can be monitored to check APC application health.
DMC Machine
Aspen Watch Machine
PCWS Machine
Processes
A? control.exe (one per DMC controller)
A? cimio_dmcp_dl... |
Problem Statement: How to configure PIMS Adapter? | Solution: This KB article provides you the detailed procedure for PIMS Adapter configuration.
PIMS Adapter configuration
Make sure that all the Adapter needed components are installed in your machine (EIF, mMDM)
Configuration for 32 bit OS
Use ODM=N
Copy all the files in register files folder to your testing machine (... |
Problem Statement: Can aspenONE Engineering and aspenONE Manufacturing applications run on the same computer? | Solution: Yes, you can run both aspenONE Engineering and aspenONE Manufacturing applications on the same computer. However, both suites need to be at the same version. Mixed versions of Engineering and Manufacturing suites are currently not supported.
Keywords: AES,
MES
aspenONE
References: None |
Problem Statement: Why are the Help files not present when installing aspenONE using a silent deployment package? | Solution: When installing aspenONE using a silent install package, if the Help files are not present, then they were not included in the silent install package when the package was originally created.
To fix this, copy the HtmlHelp self-extracting exe files from the original location on the media at:
<media_root>\asp... |
Problem Statement: How to model a two stage compression, split pressure level propane refrigeration process in HYSYS? | Solution: In this document, a typical two stage, split level propane refrigeration process model is presented, along with several possible integrations with other parts of a plant. The source and detailed discussions of the process can be found in reference [1] and [2].
Figure 1 shows a two stage, split level refrige... |
Problem Statement: How do I model solid solubility in a flowsheet?
See the attached files: dissolid.bkp and dissolid.inp The backup file will run in Aspen Plus 10.2 and higher. The input file will run in 9.2 and higher. | Solution: A partially dissolved solid can be modeled in Aspen Plus by specifying a physical property chemistry paragraph or object containing an equilibrium salt reaction. This method will enable the physical property system to perform solubility calculations for all streams and blocks within any flowsheet section that... |
Problem Statement: Aspen EDR design templates enable process engineers to perform preliminary sizing of heat exchangers using design standards created by the company experts. EDR design templates can be created to enforce geometry and design specifications preselected for an exchanger type. | Solution: The objective of this solution is to understand:
· Why one should use EDR Design templates
and demonstrate how to:
· Create a Heat Exchanger Design Template
· Use the template to size a Rigorous Heat Exchanger model from a Process Simulator (Here Aspen HYSYS)
· Review resul... |
Problem Statement: Incorporating rigorous heat exchanger models in process flow sheets helps process engineers quickly evaluate feasible heat exchanger design alternatives and assess its impact on capital and operating expenditures. This is achieved by means of accurate thermal and hydraulic process simulation models t... | Solution: This example demonstrates the above value by incorporating a rigorous Plate-Fin Heat Exchanger Model in an Aspen HYSYS Flowsheet.
Plate-fin heat exchangers are critical to many cryogenic gas separation processes and are increasingly found in many processing plants. Significant capital and operational savings ... |
Problem Statement: Where do I find examples on flowsheet of rate-based model CO2 capture with an absorber and regenerator? | Solution: Beginning with Aspen Plus V8, we have introduced aspenONE Exchange, which contains many examples and flowsheets.
There are different examples on CO2 capture Flowsheet with Ratebased models are available with Physical as well as Chemical Solvents in below location
From the Aspen Plus ribbon, click on "Exchan... |
Problem Statement: How do you obtain properties for streams from the main and sub-flowsheets using Excel VBA? | Solution: This example macro demonstrates how to extract data across all streams from the main flowsheet and all sub-flowsheet including sub-flowsheets within sub-flowsheets.
This requires a recursive function that can call itself on the given flowsheet's sub-flowsheets. The attached example case demonstrates this with... |
Problem Statement: How to generate an Ideal Pump Curve from Aspen HYSYS. | Solution: For generating Idea Pump curves, users can use Generate Curve option available in HYSYS pump operation. Please follow the steps listed below to generate the curves.
1. Add and converge a simple pump Unit Operation in your flowsheet. You can fully define the inlet stream and then specify the outlet pressur... |
Problem Statement: How do I use Aspen HYSYS to analyze column relief loads using the Unbalanced Heat Method? | Solution: The Property Balance Utility can be used to analyze the unbalanced heat loads on a Column. The steps to complete the analysis are shown in the PDF attached using the HYSYS example called " Atmospheric Crude Tower.hsc" Please note you will find this file directly from Resources tab > Examples
       Â... |
Problem Statement: In one Aspen Plus or Aspen Properties simulation using data regression to estimate the binary interaction parameter UNIQ for the UNIQUAC activity coefficient model, if the ternary diagram is created using the “Aspen Plus Ternary Diagram” the effect of changing the binary parameters can be observed. ... | Solution: )
This problem is caused by user-entered binary parameters being silently replaced with the regressed values if a Regression section is defined.
The workaround to solve this problem is (applies for Aspen Plus and Aspen Properties):
1. Update the binary parameters first, and then delete the Regression section.... |
Problem Statement: Aspen Capital Cost Estimator (ACCE) v8.4 and v8.6 crash/freeze when working on a dual monitor desktop computer. | Solution: When working on a dual monitor desktop computer, sometimes you select an option that will display another window inside our Economic Evaluation software and you will note that the program will freeze after making a click on this selection. This only happens on a dual monitor desktop computer. To avoid this ... |
Problem Statement: Can Aspen Simulation Workbook V7.3 or the Aspen Plus and Aspen Properties Excel Add-In run on Windows 7 (64bit) together with Excel 2010 (64bit)? | Solution: No.
Aspen Simulation Workbook (ASW) V7.3 and the the Excel add-in for Aspen Plus and for Aspen Properties do not support 64 bit Excel.
ASW and the Excel add-in for V7.3 will run on Excel 2010 x 32 bit (or on lower versions of Excel).
There is a patch available for ASW V7.2 to support Excel 2010 (which came ... |
Problem Statement: After adding Ammonium Bisulfate (NH4HSO4) to the Chemistry in my simulation, it fails with missing parameters.
****PROPERTY PARAMETER ERROR
SOLID FREE ENERGY OF FORMATION (DGSFRM) MISSING
FOR COMPONENT "AMMON(S)". UNABLE TO CALCULATE REACTION CONSTANT.
! Calculations stopped because ... | Solution: The solid free energy of formation for Ammonium bisulfate or Ammonium Hydrogen Sulfate (NH4HSO4) is missing from our databank (value of zero stored). The calculated equilibrium constant would be in error, possibly causing incorrect results, and that is why we now terminate the calculations.. If no precipitati... |
Problem Statement: I have edited the pure component and binary interaction parameters inside Aspen Plus. When exporting the Aspen Plus property package into Aspen HYSYS I do not get identical values when comparing the results between both the simulation packages.
Applicable Version(s)
Aspen HYSYS and Aspen Plus version... | Solution: When exporting the Aspen Plus property package into Aspen HYSYS only the original component properties and binary interaction parameters from the selected databanks are exported into the Aspen HYSYS simulation. Any specified parameters by the user inside Aspen Plus do not pass into Aspen HYSYS. For this reaso... |
Problem Statement: In Safety Analysis | Exch. Tube Rupture, when the user tries to input a negative value for Operating Temperature at High Pressure Side, an error message appears "Number is outside allowable range." as shown below: | Solution: This is an known issue in V8.4 and V8.6 HYSYS, which has been fixed in HYSYS V8.8.
The current workaround is to change the Units Set to EN from the Home Tab, then input temperature values in degree F(Fahrenheit). Change the Units back to SI where HYSYS will accept the converted negative values.
If the desir... |
Problem Statement: How do I prevent the error message, "Configuration unsupported for Miller charts for tee K=1 used"? | Solution: In Aspen Flare System Analyzer, the tee calculations uses a K factor which is interpolated using Miller Curves, which are functions of the flow and area ratios of the branch to the total flow as well as the branch angle. These charts do not cover all possible configurations of tee and so in these cases Aspen ... |
Problem Statement: When trying to perform a full install of the Aspen OnLine components on a Windows 7 operating system there is no option to install the Aspen OnLine Server component. | Solution: Typically, the Aspen OnLine Server component runs as a service on a server class operating system. Due to some changes in the configuration of the Aspen Properties Enterprise Database (APED) on a server class operating system, the Aspen OnLine Server component can now only be installed on a server class oper... |
Problem Statement: How can I design a Plate Fin / LNG using Aspen Exchanger Design & Rating (EDR) in Aspen HYSYS? | Solution: Steps to design a Plate Fin inside Aspen HYSYS using EDR.
1. You need to create a Simple Weighted Plated Fin in HYSYS, it has to be fully defined
2. Open EDR, open a “New� case, select Plate Fin Exchanger (PlateFin).
3. Then go to the “File� Tab and select “Import From� and select the ... |
Problem Statement: In some Aspen Flare System Analyzer case files that contain glycol, there is big difference in temperature for Knock-Out drum in Aspen Flare System Analyzer and Aspen HYSYS. | Solution: Peng Robinson in Aspen Flare System Analyzer does not handle the glycols like TEG very well. This is why in Aspen Flare System Analyzer, glycols are often modeled as hypothetical HC - which can affect results significantly.
In general, Aspen HYSYS and Aspen Flare System Analyzer PR should be close in most cas... |
Problem Statement: The depressuring tool in Aspen HYSYS allows the user to study a scenario in which a depressurization in a reactor takes place maybe due to a fire or a blowdown. In order to study this scenario, the user must define certain valve parameters. One of the specifications is the Vapour Flow Equation, in wh... | Solution: The empirical factor as specified in the general equation was originally used in the utility "Depressuring - Original". This is left unchanged in the new version for backward compatibility. The user can make changes in the spreadsheet and modify the equation to the one that they want to use (ideal or semi-id... |
Problem Statement: I get the error below trying to use the Import Sources option. | Solution: This error is common when you have multiple versions installed. You must set the current version as the default one. For V8.6 go to All Programs | AspenTech | Process Modeling V8.6 | Aspen HYSYS | Set-Version Aspen HYSYS V8.6. Please note you require administrator rights to do so.
Keywords: import error, impo... |
Problem Statement: What should I do when I get warning "Solid particles (e.g. ice pellets) have been detected inside pipe"? | Solution: This warning is displayed when either:
The temperature somewhere in pipe segment is below 0C AND water is present in the stream
OR
The inlet stream has a solid phase
In the event of this warning the user should check the hydrate formation temperature and compare this with the temperatu... |
Problem Statement: Where can users find the supportive packing materials to export from HYSYS to KG tower in tray sizing utility? | Solution: HYSYS exporting to KG tower feature only supports a few packing materials. Users can open a tray sizing utility and go to export tab.
After clicking "export to KGtower", users can select Packing radio button and check the box for displaying KG packings. If the packing materials that you select are in this lis... |
Problem Statement: How can I model a thermal fluid heater? | Solution: Many plants furnish heat to individual users by means of an intermediate heat transfer medium, which is normally mineral or synthetic oil. A fired heater is typically used to elevate the temperature of this heat transfer medium. The fluid normally remains in the liquid state from inlet to outlet. This kind of... |
Problem Statement: How do you find the layered temperature for the pipe in an Aspen Hydraulics? | Solution: In Aspen Hydraulics pipe model you can provide heat transfer parameters and add insulation layers as given below.
The Hydraulics then calculate the fluid temperature, temperature of fluid in contact with pipe, temperature of pipe/insulation, the temperature on the surface of the insulation and ambient tempera... |
Problem Statement: 错误消æ�¯â€œNot licensed for Crude Distillation (Distillation of high NBP hypothetical components)â€�有何å�«ä¹‰ | Solution: å�¯ä»¥è®©HYSYSè¿�行的许å�¯æ–‡ä»¶æŽ§åˆ¶ç�€ç”¨æˆ·å¿…é¡»è¦�使用的功能和选项。其ä¸æœ‰ä¸€ä¸ªâ€œCrudeâ€�选项，如果没有勾选这一选项，当è¿�行塔模拟程åº�时，仅é™�有é™�个数的物质组分，例如“Not licensed for more than 25 components with columnsâ€�。在这ç§�情况下，ç... |
Problem Statement: Do I need a license to access PVT Pro from Schlumberger? | Solution: If you have Aspen HYSYS Upstream access then you should have access to PVT Pro.
The program allows you to open .pro files and install the characterization in Aspen HYSYS, as well as characterize an assay using PVT Pro EOS.
To access PVT Pro in the Properties Environment go to PVT Laboratory Measurements.
Then... |
Problem Statement: What is the impact of coking and what are the general guidelines to avoid excessive coking in Fired Heaters? | Solution: Coking is the formation of carbonaceous deposits and is an important side reaction in many industrial processes, but it can become a problem in fired heaters and fired reactors as they accumulate inside the coils or tubes. It is recognized that coking is a problem to be avoided
In general (without getting i... |
Problem Statement: The compressor inlet stream vapor fraction is less than 1 but there is no warning about liquid in the inlet stream. | Solution: The reason why we are not seeing an error message in the trace window or on the compressor object view is because of the tolerance based on which we check if there is Liquid in the inlet feed stream. The tolerance we use in this case is 0.999 and compressor will only warn if the vapor fraction of inlet stream... |
Problem Statement: HYSYS invokes the incorrect solver for an Aspen Custom Modeler exported model. (ACM Op). This may cause convergence failure. It should be using by default the sparse solver with block decomposition, but it is incorrectly using the sparse solver without block decomposition. | Solution: Create a script in the model in Aspen Custom Modeler with the name EBSOLVE with the following instructions;
SOLVER DECOMP_SPARSE
SOLVE
Export the model from Aspen Custom Modeler. The purpose of this change is to create an OOMF initialization script. Note that if there is a Presolve VBScript in the model i... |
Problem Statement: How do I customize the Plate Databank in Aspen Plate Exchanger? | Solution: The Plate Databank can be edited by opening the Mdb file located in the program directory. These steps are described below.
1. Open Windows Explorer and navigate to C:\Program Files (x86)\AspenTech\Aspen Exchanger Design and Rating V8.4\Dat\Mdb.
2. Open the file PlateDb.mdb
3. Add an index and Manufacture... |
Problem Statement: When installing Aspen Basic Engineering from DVD 1 of V8.6, we cannot load any information on this program since the Aspen Basic Engineering Server is not available. We select all the options within the ABE group and the installation fails to register the server settings, like the Data Services folde... | Solution: The Aspen Basic Engineering Server is no longer included on the Aspen Basic Engineering section, you will need to go to the Server Tools group and select the Aspen Basic Engineering server so it can be installed on your machine.
Keywords: V8.6, Data services, Fail, Server, Aspen Basic Engineering
References: ... |
Problem Statement: What is the geometry definition of Open distance at top (bottom) of layout/ Open distance on left (right) of layout/ Shell ID to outer tube limit diametric clearance? | Solution: Here is the sectional drawing of a shell and tube exchanger. The blue line refers to outer tube limit diametric clearance. The red line refers to the baffle outer diameter. The black line refers to Shell ID.
Open distance at top/bottom/left/right of layout share the same definition. It means the outmost tube ... |
Problem Statement: How can I use the Aspen Exchanger Design and Rating (EDR) programs when in the supercritical region? | Solution: There are two ranges of pressure which can be termed ?supercritical? for anything but a pure component. One is above the criconbar, which is the highest pressure at which two phases can exist and the other is between the critical point and the criconbar, where two phases can exist, but unusual behaviour can o... |
Problem Statement: What is the meaning of Results Warning 1923? | Solution: Warning 1923 means that the Reynolds number is less than 5 low Reynolds (Re) number for the cross flow in the shell side. This warning is based on the investigation done by the HTFS group where they found adverse effects in heat transfer due to poor shell side mixing. The conclusion of this analysis brought a... |
Problem Statement: When I run the EDR file in simulation or rating mode, I get input warning 1107: The tube count from the tube layout differs from the effective tube count. | Solution: This warning is due to inconsistencies between the inputted number of tubes and the calculated number of tubes based on the bundle specifications. This can be fixed by navigating to Input | Exchanger Geometry | Geometry Summary and deleting the specified number of Tubes. The value will be automatically calcul... |
Problem Statement: What’s the Configure Online Server? | Solution: It’s a utility designed for Aspen Process Controller (RTE) and Aspen Online Deployment (AOD). It’s NOT suggested to be used for configuration of traditional DMCplus, IQ and Nonlinear controllers.
The Configure Online Server dialog box enables you to:
- Set up the current machine as an Aspen Process Cont... |
Problem Statement: Is there a legend for the internal parts shown in the tubesheet layout? | Solution: While there is no separate documentation of how the items are drawn, you can see the item in the drawing. You can display the items in red by selecting the item category on the top of the window and the click the corresponding column on the bottom of the window as illustrated on the screen capture.
1. Nav... |
Problem Statement: Why are there different values for overall tube length using Aspen Shell & Tube Exchanger vs. Shell & Tube Mechanical? | Solution: The reason that the setting plans are different in the two programs is that- currently, the default calculations for exchanger geometry lengths are different in thermal and mechanical. So as a result, under some circumstances, geometric dimensions will not be identical in both programs, for example-when the... |
Problem Statement: In the Aspen Exchanger Design and Rating "Optimization Path", what is the difference between OK and (OK) between brackets? | Solution: Aspen Exchanger Design and Rating searches to find a design that satisfies the following:
1. Enough surface area to do the desired heat transfer (Area Ratio (AR) >= 1). Area Ratio is the ratio of calculated surface area to required surface area for the desired heat transfer.
2. Pressure drops (at both... |
Problem Statement: Are there built-in in kinetics for the thermal decomposition of a polymer for recycling applications? | Solution: Segment-based kinetics can be used to simulate the reaction steps involved for thermal decomposition or de-polymerization. For this purpose, we need to know the relative amount of different segments and monomers present in the bulk polymer. Once that is determined, we may write the key reaction sets with appr... |
Problem Statement: What are XDEF Variables? | Solution: XDEF variables are created to establish the connection between calculator block and other unit operation variables. The links are known as connection equations which cause the two EO variables to be equal at solution. If we look at following EO variables (in the picture below this sentence), the connection eq... |
Problem Statement: User of Aspen Plus can further rigorously design/rating the heat exchanger in Aspen Plus process simulation through the integration of Aspen Exchanger Design & Rating program (EDR). | Solution: To integrate EDR into Aspen Plus, HeatX model in Aspen Plus should be used to simulate the heat exchanger.
Procedures below show how EDR will work in Aspen Plus.
1. Select HeatX model in Aspen Plus to simulate heat exchanger under Shortcut/Detailed method (Or select the existing HeatX model in process flo... |
Problem Statement: When defining non-conventional components in the component list, for example when simulating Biomass cases, it is often observed that NC Solid tab in the Stream Definition Form does not become active even though the stream class MIXCINC or MIXNC is selected in the Setup Folder>Specification>Stream C... | Solution: In order to avoid this issue, the user should include a solid component in the components list. An example can be COAL defined as a Solid under the 'Type' column definition drop down list. Once completed the NC Solid and CI Solid tabs will become active in the simulation environment. Enter the values for flow... |
Problem Statement: Error "Unable to load simulation engine, Probable cause: Insufficient disk space or memory" when launching Aspen Plus. | Solution: This error may be seen when you have a 3rd Party Software name "KEYLOK" is installed on your computer, which shares a common component, ppmon.dll, and causes this issue.
To resolve, please follow these steps:
1. Go to C:\Windows\System32 and rename ppmon.dll and ppmon.exe
2. Go to C:\Windows\SysWOW6... |
Problem Statement: What error messages will I receive in Aspen Process Explorer V8.x if it loses connection to the license server? | Solution: Note: for information about the different licensing states that impact the functionality of Aspen Process Explorer, please refer to KB article 139163.
This Knowledge Base article describes the behavior of Aspen Process Explorer when the connection to the License Server is lost, and shows the error and warning... |
Problem Statement: How can I modify the significant digits in the heat exchanger output in the performance tables? | Solution: Formats defined in the Preferences file will not affect the Performance Tables in the Heat exchanger datablock.
Therefore if you want to increase the number of significant figures in a unit operation property report you need to make some changes in the .rdf file associated to that unit operation.
You will fin... |
Problem Statement: Is it possible to add a new solvent for the NRTL-SAC model to investigate solid solubility issues with Aspen Solubility Modeler? | Solution: It is not possible for the user to modify the template files delivered in the Aspen Solubility Modeler files, as the regression spreadsheet is protected with a password and the variables used in the calculation spreadsheet are not formally documented.
However it is possible to proceed with Aspen Properties (o... |
Problem Statement: When you export an adiabatic valve specified in Aspen Plus with the option "Adiabatic flash for specified outlet pressure (pressure changer)" to Aspen Plus Dynamics, the valve is specified at arbitrary position of 50% and a valve coefficient C0max is calculated based on pressure drop and flow rate. W... | Solution: Let's first set the definition of Kv, the flow factor. The definition in metric units is:
Kv = Q * sqrt(rho/1000 * 1 / dp)
where
Q = flowrate in m3/hr
rho = density in kg/m3
dp = pressure drop in valve in bar
Kv relates to C0max in the simple valve model with the following equation:
C0max = sqrt(2000)... |
Problem Statement: Does Aspen HYSYS calculate the Acceleration Pressure Drop for single phase flows in a pipe segment? | Solution: For single phase streams, Aspen HYSYS uses the Darcy equation for pressure drop predictions. This equation is a modified form of the mechanical energy equation, which takes into account losses due to frictional effects as well as changes in potential energy.
The acceleration term (acceleration dP and accele... |
Problem Statement: Is it possible to copy streams and unit operations from the main flowsheet into a Hydraulics sub flowsheet? | Solution: Copying a stream or unit operation from the main flowsheet to paste in Hydraulics sub flowsheet is not a supported function in Aspen HYSYS.
THe Hydraulics sub flowsheet has its own unit operations palette. It only supports specific unit operations. For streams, those available in the hydraulics sub flowshee... |
Problem Statement: Aspen Properties in Aspen HYSYS does not launch in Windows 8. | Solution: When Aspen Properties is added in HYSYSÂ the data is written in a temporary folder. If this folder is Read Only then the users may not be able to add Aspen Properties in HYSYS. The solution will be to launch HYSYS with an administrator.
Right mouse click on Aspen HYSYS and then select Run As Administrator.
K... |
Problem Statement: How do I find the stream using the "select object" operation? | Solution: When you right-click on the PFD and pick "select object" to search for a specific stream/unit operation, only the streams and unit operation that are visible appear in the list. If the stream/unit operation is hidden, you won't see it in the list. To see it: right click on the PFD=>Reveal hidden objects=>choo... |
Problem Statement: I am unable to gain access to the internet version of Aspen Process Manuals. Can you please tell me the reason for this even though I have a valid support account and have supplied the correct log in credentials? | Solution: Aspen Internet process manual is available only for universities and customers who are doing an online evaluation.
Current commercial customers will need to set up this manual as an intranet version which is hosted internally by the company. Information on how to install and configure the intranet version of ... |
Problem Statement: How can I specify two vapour relief valves in the depressuring utility? | Solution: Provided you are not interested in the liquid flow from the vessel, you can use the liquid valve as the second vapour valve by changing it's position. After setting up the depressuring utility;
- If you are using HYSYS 2006 or an earlier version, make sure you have turned on the Aspen Fidelity licence by go... |
Problem Statement: Which is the license that I need to have in order to run Pipesys? | Solution: If your contract with AspenTech starts after October 31, 2010, AspenTech no longer offers the PIPESYS or OLGAS technologies from SPT Group as part of our aspenONE Engineering suite. Customers have to license either PIPESYS or OLGAS directly from SPT Group so you cannot check if the license exists in the Licen... |
Problem Statement: How to add critical properties to the work table? | Solution: You can add the critical properties of the streams you like in once table on the flow sheet.Below are the steps to do so;
1. Home Ribbon- Right side –Stream Analysis- Select Critical Properties.
2. Select Process Stream-
3. Then on the left navigation panel, go to the stream analysis and you sho... |
Problem Statement: Steam Ejector Extension Unit Operation for Aspen HYSYS with Aspen Properties. | Solution: Use the attached Ejector-V71.zip file for Aspen HYSYS version V7.1.
Use the attached Ejector-V72.zip file for Aspen HYSYS version V7.2.
Please note that the ejector extension given in solution document 110065 does not work only when you use Aspen Properties with streams involved with ejector extension unit op... |
Problem Statement: 在HYSYS管道模型中怎样计算滞涩流物性 | Solution: 请查看附件，其中对在HYSYS管道模型中怎样计算滞涩流物性有详细的介绍。
注意事项
您可以在以下两个地方看流场信息：
a. On the Performance Tab (of Pipe) ll Slug Results page ll Status column;
b. On the Performance Tab (of Pipe) ll Profiles Page ll View Profile button ll Flow Regime column
如果用户在Design|Parameters 页面修改了关联方法，而且如果关联方法使用了流场图，那么不同的流场就可以看到。例如，如果用户选择了... |
Problem Statement: How to change the display icon of the column after user customizes in the sub-flowsheet? | Solution: 1. Right click the column and pick "change icon" button.
2. Choose the proper icon from different types of columns.
Keywords: Change display icon, Customization
References: None |
Problem Statement: I would like to perform Design Specs calculations as in Aspen Plus for manipulating a specified input variable to achieve a particular value of a flowsheet calculated variable. How do I do that in Aspen HYSYS? | Solution: In Aspen HYSYS steady state the equivalent to the Design Specs of Aspen Plus is the Adjust block.
An Adjust block is one of the available logical unit operations in Aspen HYSYS however this is not available in Aspen HYSYS Dynamics as logical unit operations are not supported instead PID controllers are used.
... |
Problem Statement: What is Column Component Recovery specification? Is it a ratio spec? | Solution: Yes, this is a ratio specification. The spec is the molar, mass, or volume flow of a component (or group of components) in any internal or product stream draw divided by the flow of that component (or group) in the combined tower feeds. As the recovery is a ratio between two flows, you specify a fractional va... |
Problem Statement: Are the "Exposed" and "Wetted" areas in the Safety analysis forced to be the same? | Solution: No, they aren't supposed to be the same.
Let's refer to the PDF contained in solution 140064 related to the Fire Overpressure Analysis inside Safety Analysis. If you refer to Fig 41, you will see an Exposed area and if you continue looking you will see under Fig 45. A Wetted surface area different than the Ex... |
Problem Statement: How to change the text/title from multiple lines to one line?
Before adjustment, the title looks like this.
After adjustment, the title looks like this. | Solution: Users can use "size mode" under flowsheet/modify tab to drag and size the text.
Keywords: Size, Multiple lines, Title
References: None |
Problem Statement: I am unable to delete a fluid package even though it is not used anywhere. How can I fix this problem? | Solution: The first step is to ensure that the fluid package which you wish to delete is not being used anywhere.
1. In the Simulation environment, go to the Home tab. Ensure that the solver is set to On Hold. Click on Fluid Package Associations.
2. Ensure that the fluid package which you are trying to delete is no... |
Problem Statement: How do I increase the font size of the labels on the PFD? | Solution: -
We can find this option in ribbon bar Format tab .
The steps are as follows:
1. Select the label you want to format. In this example it is CondDuty.
2. In the Ribbon bar, go to the Format tab
3. Here you have option to increase or decrease font size. In the following example, I increased the Con... |
Problem Statement: Is there a way to use HSR in my physical computer with Aspen HYSYS installed in a remote application? | Solution: You cannot run Hysys Stream Reporter in your actual computer while running Aspen HYSYS in a server. HSR is a prebuilt macro that works by pulling out the stream properties by using it's corresponding HYSYS type library which is included which will be in the computer if HYSYS is installed.
Still, there are s... |
Problem Statement: The standard method that Aspen HYSYS uses to calculate flash point in the Cold Properties Utility is API procedure 2B7.1. The same method is used in stream properties (from correlation manager in Refsys) to estimate the flash point. However, the results of these two scenarios are different. | Solution: The Flash Point Correlation property and the Cold Properties Utility are both using the same correlation to estimate the flash point, the API 2B7.1 method. However, the D86_10% temp which is used into the correlation is differing in the two scenarios. The correlation property is using the more recent Refsys e... |
Problem Statement: What is difference between partial, total and reflux column condenser type in Aspen HYSYS? | Solution: • Partial condenser: Has both vapour (vent gas) overhead product and distillate (liquid) draw. This will increase the required number of DOF specification by 2 over a base case of just an absorber column.
• Full Reflux condenser: All liquid from the overhead receiver is refluxed back to the column. There is o... |
Problem Statement: Is it possible to define selective conditions for activating HYSYS tabular properties? For example, could I use tabular properties for only a set of pressures and for the rest of the conditions the default methods? | Solution: This is not possible because once a Tabular Property is active, the parameters will be regressed to match data and will be used for the entire simulation with that property package.
Particularly when dealing with Enthalpy related properties, the entire envelope curve changes in order to fit the input data.
N... |
Problem Statement: æ€Žæ ·å°†Aspen Properties/Aspen Plus文件导入到Hysysä¸ | Solution: 自HYSYS V7.0 以æ�¥ï¼Œç‰©æ€§åŒ…和二元交互å�‚æ•°å°±å�¯ä»¥ç‹¬ç«‹çš„导入到HYSYSä¸ï¼ˆä¸�包括PFD）
导入æ¥éª¤å¦‚下：
1. 建立一个新文件；
2. 在Fluid Package æ ‡ç¾é¡µé�¢ï¼›
3. 点击Import按钮；
4. 在文件类型ä¸é€‰æ‹©Aspen Properties文件类型
注�事项
1. ... |
Problem Statement: USGPM units not available for Actual Liquid Flow within Aspen HYSYS Stream Reporter. | Solution: The USGPM is not allowed because the list of conversions in HYSYS Stream Reporter can only be 255 characters long-conversions. After this length, they are truncated and placed as not selectable.
The USGPM conversion can be added to the Actual Liquid Flow list, you just have to do the following:
1. In the St... |
Problem Statement: Is there a way to use HSR in my physical computer with Aspen HYSYS installed in a remote application? | Solution: You cannot run Hysys Stream Reporter in your actual computer while running Aspen HYSYS in a server. HSR is a prebuilt macro that works by pulling out the stream properties by using it's corresponding HYSYS type library which is included which will be in the computer if HYSYS is installed.
Still, there are s... |
Problem Statement: The standard method that Aspen HYSYS uses to calculate flash point in the Cold Properties Utility is API procedure 2B7.1. The same method is used in stream properties (from correlation manager in Refsys) to estimate the flash point. However, the results of these two scenarios are different. | Solution: The Flash Point Correlation property and the Cold Properties Utility are both using the same correlation to estimate the flash point, the API 2B7.1 method. However, the D86_10% temp which is used into the correlation is differing in the two scenarios. The correlation property is using the more recent Refsys e... |
Problem Statement: What is difference between partial, total and reflux column condenser type in Aspen HYSYS? | Solution: • Partial condenser: Has both vapour (vent gas) overhead product and distillate (liquid) draw. This will increase the required number of DOF specification by 2 over a base case of just an absorber column.
• Full Reflux condenser: All liquid from the overhead receiver is refluxed back to the column. There is o... |
Problem Statement: Does Aspen HYSYS have an option to include the wind/air speed into the Heat Loss Parameter for the Depressuring utility? | Solution: The convection part of the Detailed Heat Loss model assumes that the external ambient is air at atmospheric pressure and zero speed, and it’s not possible to modify this. The main reason for this is that the actual temperature of the "air" surrounding the vessel will depend on many things like: proximity of... |
Problem Statement: How I can display in the strip-chart inlet/outlet vapour velocity for a pipe segment in dynamic mode. I tried using custom option to create the strip-chart but when I ran it vapour velocity, it is not shown on the chart. When I checked the historical data logger it is also empty. | Solution: The inlet/outlet vapour velocity for pipe segment applies only to the steady state model, and shows up as empty when in dynamics mode.
Steady state models slip, therefore you can get different vapor and liquid velocities. The pipe does not model slip in dynamics mode so it assumes that all phases are moving ... |
Problem Statement: How can I check the version and patch level of HYSYS? | Solution: If you would like to check the current version of Aspen HYSYS that you are using before installing any patches, or if you would like to know what patch level you have installed, then follow the steps mentioned below:
Step 1: Load the Aspen HYSYS application, which will be located in your start menu inside the... |
Problem Statement: How to prevent the warning, "Minimum tray residence time is smaller than 4 times the column integration step size". | Solution: When the calculated residence time number is below a certain number (four times the integrator step-size per the composition multiplier) then Aspen HYSYSÂ produces a warning message alerting the user that the dynamic transient calculations are not carried out rigorously enough.
To eliminate the warning you c... |
Problem Statement: What is the inlet stage convention adopted in Hysys column? | Solution: By default, the inlet streams entering a column in Hysys will be treated as on-stage convention. The following sequence is employed to establish the resulting internal product stream:
1) The entire component flow (liquid and vapour phases) of the feed stream is added to the component flow of the internal vap... |
Problem Statement: Why do I see a "higher liquid inventory vaporizes" warning the in PSV Sizing & Depressuring Utility? | Solution: A higher liquid inventory only indicates a higher wetted area. With the API521 heat flux method, it would mean the heat transfer area is higher.
A higher liquid inventory also means a higher demand of sensible heat to heat the liquid inventory up to its bubble point so evaporation can begin. It could be a sit... |
Problem Statement: I want to set the default PFD Table entries so I do not have to modify tables multiple times with the same variables. If you right click and select “Show Table” on a stream or unit operation, I want to immediately show the properties I have selected. | Solution: Go to File | Options | Simulation. Scroll down the Simulation Options window to the PFD Tables Content and Formats section.
Here you will find the available variables to display in the PFD tables for Material or Energy streams and Unit Operations.
Pick the desired entries and click on the OK button in order t... |
Problem Statement: Why am I unable to register the Gas Quality Indicators extension? | Solution: In this knowledge base article we will be looking at how we can resolve the issue with registering this extension inside HYSYS.
The root cause of this issue is due to Administrator rights. Even if you have Administrator rights on your machine you still may have Microsoft Universal Access(UAC), which can restr... |
Problem Statement: What is the definition of a "cell" with respect to a compressible gas pipe? | Solution: Cells represent the number of cells within the pipe (10-1000). When you are modeling multiple sections, faster and more stable convergence can be obtained if all cell sizes are similar. For a stable solution, the number of cells should be selected such that the following constraint is met:
The cells have to b... |
Problem Statement: When read xml file which is generated in a newer version of Aspen HYSYS (i.e. V8.6) is opened in an older version of Aspen HYSYS (i.e. V8.4), there is an error "This Beta - version case cannot be read by this version of HYSYS". | Solution: The reason why the xml file can't be opened with this error is because the case file contains extension unit operations object with invalid XML names. Please make sure the GUIDs of extension unit operation object used for naming begin with a letter or use a valid ProgID instead.
To avoid this error message:
1... |
Problem Statement: How do I print documents from the documentation builder in Safety Analysis? | Solution: Although there is no menu option to print, you may still press "Ctrl - P" on the keyboard.
Keywords: Safety Analysis, documentation builder
References: None |
Problem Statement: How to generate a list of all the unit operations with their input process conditions in a table? | Solution: You can use Workbook to add a list of unit operations with the required process conditions.Below are the steps to do so,
1.Please go to the workbook on the home ribbon.
2.Then when you are on the workbook tab you can use setup for adding the equipment you want with the variables.
3.Then to add on the flowshee... |
Problem Statement: Missing PSV data with the following error message:
"The database file does not have an entry for this valve or scenario. This is most likely caused by opening the HYSYS case with a missing or inconsistent database file. It is recommended to re-open this case with the correct database file. To conti... | Solution: In safety environment, Aspen HYSYS will generate both .hsc and .mdb file. HSC file is aim to carry all the regular simulation data and MDB file is to store all the data created in the safety environment. So if the information in the safety environment needs to be retained, the MDB file must be kept.
The easy ... |
Problem Statement: I have imported a template in my flowsheet but the fluid package in the imported template is different from the main-flowsheet. How do I change the fluid package for the template imported in the flowsheet? | Solution: The template inherits the fluid package used to create the template flowsheet. The user has the option to change the fluid package after importing this into the current simulation. The option is available in the Home page under Fluid Package Association as highlighted below.
The Fluid Package Manager will o... |
Problem Statement: How do you get the CutYield% profile of a blend in the Petroleum Assay? | Solution: If user wants to blend assays in Petroleum assay, he has to blend the oil in the simulation environment using the Petroleum Feeder.
Â
Then get the output from the feeder which is a blend (Crude stream). From there, the user can save the output stream as assay.
Once it is saved, the blended assay will be avai... |
Problem Statement: What does ‘Make FCC ready’ option for an assay mean? | Solution: The component list for FCC calculations requires a set of components. One way to add these necessary components to the list is to make the assay FCC ready.
When an assay is added, the component list generated does not contain the necessary components for FCC calculations. In order to add the missing component... |
Problem Statement: Petroleum-related properties appear incorrectly calculated in a stream resulting from blending in a mixer. | Solution: Incorrect calculation of stream properties from a mixer may occur if flow reversal is present, for example if negative flowrates are specified or calculated. In this case, splitting of a stream with unknown properties into two defined streams is being modeled. While a number of properties are well-calculated ... |
Problem Statement: How does the Delayed Coker Reactor deal with coke drum cycle? | Solution: The Delayed Coker model is not currently calculating a coke drum cycle. Right now the model is just assuming a drum cycle length (16 hrs) and solving according to that since the main purpose of the model is to predict steady state yields.
Keywords: coke drum cycle, delayed coker
References: None |
Problem Statement: The liquid level percent value in a column stage is not available as an exposed variable of the PID controller. How can I use it as the PV? | Solution: Inside the column subflowsheet open the stage section and go to Performance > Hydraulics. In this table there is a column names "Liquid Height in Tray" reported for each holdup volume.
You can then use the drag and drop capability of HYSYS to export the variable from the column subflowsheet into a Spreadshe... |
Problem Statement: When running a dynamics case, there is pop-up error that recommends a change to "User Specified Primary Components". Why do I get this error, and how to I prevent it? | Solution: To choose the “User Specified Primary Components� method, you could go to the Phase Order tab of the relevant Fluid package view within basis environment as below shown:
Â
The "Use User Specified Primary Components" option displays the Select Primary Phase Components group that allows you to specify whic... |
Problem Statement: Is it possible to model a spray dryer that has more than one moisture components?
I am receiving an error:
MODEL IS ONLY APPLICABLE FOR SYSTEMS WITH ONE MOISTURE COMPONENT. | Solution: Currently the spray dryer model allows only for one moisture component. In the feed, there can only be one solvent, the moisture component, even if the additional liquid components are not defined as moisture. Other solid unit operation models such as the convective or short-cut dryer can consider multiple mo... |
Problem Statement: How can I simulate the influence of methanol injection on hydrate inhibition? | Solution: Please note the information below is relevant up to version 8.6. For version 8.8 and after, please see the following links:
https://esupport.aspentech.com/S_Article?id=000030001
https://esupport.aspentech.com/S_Article?id=000040853
The Aspen HYSYS Peng-Robinson (PR) Property Package is recommended to simulat... |
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