How to view the azeotrope values from the regression of vapor-liquid equilibrium data
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This post was last edited by Michael8455 on 2009-11-26 at 11:15. We have determined the vapor-liquid equilibrium data at atmospheric pressure for the binary system DMC-MeOH on our own, as an azeotrope forms at atmospheric pressure (with approximately 30 WT% DMC according to literature). We would like to obtain the vapor-liquid equilibrium data under high pressure and to find out the azeotrope temperatures. How can we identify the azeotrope points from the regression-based vapor-liquid equilibrium data? The T-X-Y and X-Y graphs generated contain insufficient data points, and there are no accurate data points for the azeotrope compositions. I would appreciate any advice from everyone. Thank you
The problem has been solved. Unlike other software, ProII does not provide an azeotrope analysis report, but it is possible to create an equivalent procedure. Create a flash process of your own, a bubble-point flash; simulate a gaseous phase composition at the bubble point as the feed, and proceed with iterative cycles. After convergence, it is the azeotrope temperature. This method can find only one boiling point at a time. The drawback is that the precision after the decimal point is not very high, but it is still possible to roughly determine the azeotrope temperature, which is useful for estimating and verifying experimental results.
Hope this will be helpful to those interested in TX
I’d like to ask how this flashing is done
Yes, I’ve also seen the equivalent process on the official website
I’m not quite sure what you mean, buddy. Could you make it clearer? O(∩_∩)O Thank you
I’m learning*; this is needed for extraction