Question

For a batch distillation process

(a) –ydV = d(xW)

(b) –xdV = d(xW)

(c) -xW =d(yV)

(d) - yW =d(xV)

This question was addressed to me by my school teacher while I was bunking the class.

The origin of the question is Simple Distillation topic in portion Batch Distillation of Distillation Design

Answer 1

Right option is (a) –ydV = d(xW)

Explanation: –ydV = d(xW) where dV= vapor rate, moles/h

W=total moles in still.