Please can someone help me debug this errror. I used NRTL to run property analysis on my components with ASPEN Plus V11
->Processing input specifications ...
* WARNING IN PHYSICAL PROPERTY SYSTEM
NRTL BINARY PARAMETERS FOR ALL COMPONENT PAIRS ARE ZERO,
YOUR RESULTS MAY NOT BE ACCURATE. PLEASE REVIEW AND PROVIDE BINARY
PARAMETERS AS APPROPRIATE.
->Table Generation begins ...
WATSON HEAT OF VAPORIZATION MODEL HAS MISSING PARAMETERS:
DHVLWT/1ST ELEMENT (DATA SET 1) MISSING FOR COMPONENT NAOH
DHVLWT/2ND ELEMENT (DATA SET 1) MISSING FOR COMPONENT NAOH
****PROPERTY PARAMETER ERROR
ERRORS ENCOUNTERED IN CALCULATION OF LIQUID MIXTURE MOLAR ENTHALPY USING
OPTION SET NRTL FOR H.
! Calculations stopped because of missing property parameters
Hi,
- Try going to Properties/Methods /Parameters/Binary Interaction/NRTL/Databanks sheets. Select from the available databanks. Parameters will show on the form if they are in the databank.
- Alternatively, binary parameters can be estimated using UNIFAC. If no parameters are available on the Input Sheet, check "Estimate Missing parameters by UNIFAC" at the top, or select Estimation from Home Tab and click on "Run" then check binary parameters are estimated based on default UNIFAC method
- I think you may also use the ELECNRTL property method for NAOH and HCL. That will generate Electrolyte Pair parameters
Because you have a strong acid and a strong base, it is better to use an electrolyte property method. The tutorial in Getting Started with Electrolytes gives step by step instructions for NaOH-HCL-H2O system.
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