Dear friend Abdul Wahab

To calculate Parameters of the extended Antoine equation for pure compounds using ASPEN PLUS, you can use the following steps (How can I obtain Antoine coefficients (A, B and C) from Aspen Plus ....):

1. Open Aspen Plus and select a new simulation.

2. Select a property method and component list.

3. Add a component to the simulation by clicking on "Components" in the Data Browser and then clicking on "Add Component".

4. Enter the name of the component and its molecular weight.

5. Click on "Properties" in the Data Browser and then click on "Antoine Parameters".

6. Enter the Antoine parameters for your component in the appropriate fields.

7. Click on "OK" to save your changes.

You can also find Parameters Ci for the Extended Antoine Equations as PLXANT-1. You can transform to the Basic Antoine Equation by using the following formulae:

C1 = A Ln (10)

C2 = -B Ln (10)

C3 = C

I hope this helps!

Source:

(1) How can I obtain Antoine coefficients (A, B and C) from Aspen Plus .... https://www.researchgate.net/post/How_can_I_obtain_Antoine_coefficients_A_B_and_C_from_Aspen_Plus.

(2) Where do I get extended constants of PLXANT for water and carbon .... https://www.researchgate.net/post/Where_do_I_get_extended_constants_of_PLXANT_for_water_and_carbon_dioxide_for_an_ASPEN_program_I_am_running.

(3) Where does ASPEN Plus calculate the vapor pressure of compounds from .... https://www.researchgate.net/post/Where-does-ASPEN-Plus-calculate-the-vapor-pressure-of-compounds-from.

(4) Extended Antoine equation | ResearchGate. https://www.researchgate.net/post/Extended_Antoine_equation.

(5) Antoine Equation | SpringerLink. https://link.springer.com/referenceworkentry/10.1007/978-3-642-40872-4_26-1.