VLE CALCULATORS WITH TEMPERATURE DEPENDENT BINARY INTERACTION PARAMETERS

VLE CALCULATIONS WITH ENHANCED PREDICTIVE PENG ROBINSON 78 (E-PPR 78) EQUATION

 

Enhanced Predictive Peng Robinson 78 (E-PPR 78) Equation is given by Professor Jean Noel Jaubert and his team at Université de Lorraine, France. It provides temperature dependent binary interaction parameters to be used in Peng Robinson Cubic Equation of State with Van der Waals mixing rule. The temperature dependent binary interaction parameters provided by Enhance Predictive Peng Robinson 78 (E-PPR 78) equation are to be used with a variation of Peng Robinson equation given in year 1978. These temperature dependent binary interaction parameters increase the accuracy of VLE calculations compared to when no binary interaction parameters are used or when constant binary interaction parameters are used.  The temperature dependent binary interaction parameters provided by Enhance Predictive Peng Robinson 78 (E-PPR 78) equation are found to be particularly effective in increasing the accuracy of VLE calculations when they are used for pairs containing Carbon dioxide (CO2), Hydrogen Sulfide (H2S), Ammonia (NH3) and Water (H2O). 

EQ-COMP software can include temperature dependent binary interaction parameters provided by Enhance Predictive Peng Robinson 78 (E-PPR 78) equation for pairs containing Carbon dioxide (CO2), Hydrogen Sulfide (H2S), Ammonia (NH3) and Water (H2O). For all other pairs, constant binary interaction parameters calculated using calculation procedure given on https://www.eq-comp.com/peng-robinson-cubic-equation-of-state/ webpage is used.  Apart from Carbon dioxide (CO2), Hydrogen Sulfide (H2S), Ammonia (NH3) and Water (H2O)  paraffins, cyclo-paraffins, olefins, di-olefins, alkynes, aromatics, nitrogen, oxygen, argon, carbon monoxide, hydrogen and helium are included as possible components in EQ-COMP software. A complete list of possible components included in EQ-COMP software is provided at LIST OF HYDROCARBONS – EQ-COMP. EQ-COMP software uses these temperature dependent binary interaction parameters by default for VLE calculations involving water like water dew point calculation and hydrate curve calculation, carbon dioxide like CO2 freezing and frost curve calculation and all VLE calculations involving ammonia and by choice for following VLE calculations:

  1. Bubble point temperature calculation – USD 125
  2. Dew point temperature calculation – USD 125
  3. Bubble point pressure calculation – USD 125
  4. Dew point pressure calculation – USD 125
  5. Two phase composition calculation – USD 150
  6. Phase envelope calculation – USD 125
  7. Thermodynamic properties calculation – USD 125

SAMPLE RESULTS-PHASE ENVELOPE :  Download

For requesting results of VLE calculations with temperature dependent BIPs as per Enhanced Predictive Peng Robinson 78 (E-PPR 78) equation, visit VLE CALCULATOR page.