SRK simulation problem
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This post was last edited by SUNL128 on 2010-5-26 at 18:43. I am a beginner in simulation and would like to ask the experts: when simulating the distillation of methylchlorosilane (CH3)4SI, SIHCL3, and (CH3)2SIHCL using SRK, what necessary parameters need to be entered? Do you want to know their interaction factor between the two? Thank you!
I checked using ASPEN12, and there are no interaction parameters for these substances; perhaps they are available in higher versions. It needs to be entered manually; one can consult literature or use experimental data for fitting. If there’s none of that, then hang up.
Reply to 2# dayooo: I know that the activity coefficient method requires binary interaction parameters, but the parameters of the SRK model don’t seem to be binary interaction parameters, right? Are the parameters required for SRK related to the chosen mixing rule? If the mixing rule of the RK equation is selected, is it then not necessary to enter any parameters?
SRK is generally suitable for light hydrocarbons with good compliance; I’m not sure if your material system meets the requirements. In SRK, Kij requires the interaction coefficient for the corresponding system, given by Kij=a+b*T+c/T. It is also possible to use the UNIFAC method for estimation, although the accuracy cannot be guaranteed. It is best to have experimental data for regression
It is recommended that the original poster change the title to “Discussion on the Selection of SRK Property Methods””
It can be used interchangeably with PR. . . . . . .
The original poster, please share it so we can learn*learn*! :handshake