What thermodynamic methods are generally chosen for accurate simulation results in the process simulation of medium and high-pressure coal chemical projects?
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Could some expert please advise me on what thermodynamic method is generally used to obtain accurate results in the process simulation of medium and high-pressure (3–8.5 MPa) coal chemical projects? Looking forward to experts
Thermodynamic calculations should be equilibrium calculations, but the reactions in coal chemical engineering generally do not reach equilibrium. . Some software can be used for simulation. For example, Fluent, Aspen, and things like that. .
As far as I know, in conditions of low temperature and high pressure such as those in low-temperature methanol washing, heat compensation is quite important during simulation. For example, the heat released or absorbed during the absorption or desorption of carbon dioxide by methanol needs to be compensated for at low temperatures; otherwise, the temperatures calculated using conventional thermodynamic methods will be inaccurate. The specific methods of compensation need to be determined through experiments. I don’t know much about this, so I’m not sure if what I’m saying is correct
Reply to Floor 1: You should specify what kind of process it is; generally, RK-SOLVE is chosen for gasification. It is represented differently in ASPEN and PROII, but the essence is the same.
With PRO/II, SRKM is generally the choice