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Chapter:

Distillation

Find distillate and residue rates in mole/hr, if feed rate is 100 mol/hr; The compositions of feed, distillate and residue in terms of mole fraction are 0.65, 0.9 and 0.2.


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This Chapter Distillation consists of the following topics

Find the heat given( in KJ) to the feed for the flash vaporization process if the ratio of residue to the distillate is 0.65 and the enthalpy of feed, distillate and the residue are 500, 800 and 200 KJ/kmol respectively. The feed rate is 100 kmol/hr.

Find distillate and residue rates in mole/hr, if feed rate is 100 mol/hr; The compositions of feed, distillate and residue in terms of mole fraction are 0.65, 0.9 and 0.2.

Find the feed composition of more volatile component by analysing the table below.

Enthalapy(kj/kmol) Composition
Distillate 800 0.95
Residue 200 0.2
Feed 500 ?

Hint: can neglect pre-heater.

Find the distillate and the residue rates in mole/hr

if the feed rate is 100 mol/hr; The compositions of feed

distillate and residue in terms of mole fraction are 0.65

0.9 and 0.2.

Distillation

Mass-Transfer