Regarding the separation of Aspen azeotropes, I’m seeking help from experts out there
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To separate an azeotrope using the radfrac module, initial values need to be set. How should these initial values be determined (reflux ratio, number of theoretical plates, etc.)? Since there are azeotropes present, it cannot be initially estimated using the DSTWU module, right? I’m seeking help from all the experts; I’m extremely grateful
Tools — conceptual design — azeotrope search. Next, analyze the composition of the azeotrope to determine the molar composition of the light phase in the azeotrope. Determine the molar flow rate of the light phase in the feed stream; using this molar flow rate divided by that molar composition gives an estimate of the distillate rate at the top of the tower. The reflux ratio and the number of tower plates can be initially set to any values that meet the separation requirements, and then optimized once convergence is achieved; this is provided for reference only.
What was said upstairs is correct: first, look at the phase diagram to determine whether it’s a maximum or minimum azeotrope, and where the distillation boundary lies (this determines how many columns you need and from the top or bottom of the columns you can extract the desired product). Once this is clear, use one column if that’s sufficient, or two columns if needed
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Mmhm. I’ll give it a try first. Kitty kiss