Problem: Finding the distillate volume using Y=1.425X for a distillation column
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This post was last edited by acgoal on 2016-9-6 at 11:07. The feed rate is 120 kmol/h, and the vapor flow rate in the stripping section is 100 kmol (I’m not sure if these two values are reversed). R = 1.3Rmin, Y = 1.425X; determine the overhead distillate flow rate D. I’ve been trying to calculate it for ages with no answer; please, someone expert can help!
This post was last edited by tjuliusuan on 2016-9-6 at 11:10. Rmin=(XD-yq)/(yq-xq); feed at the bubble point, where xq=xf and Yq=1.425xq. After determining the minimum reflux ratio, the reflux ratio is calculated as V’=V+(1-q)F; in other words, V’=V=100. D=100/(R+1). The value of Y=1.425X is somewhat confusing, and it’s not possible to directly apply the formula for calculating the reflux ratio in the bubble point condition. The examiners keep asking questions related to the minimum reflux ratio at the dew point and bubble point
This question is simple; not getting it right means the multiplication wasn’t done properly