ChE 3600 - MASS TRANSFER AND SEPARATIONS 1. A stripper is unable to obtain the s

Question

ChE 3600 - MASS TRANSFER AND SEPARATIONS 1. A stripper is unable to obtain the specified purity of the outlet liquid. The outlet liquid concentration of the impurity can be decreased by doing which of the following changes? Circle all correct answers. There is one correct answer for each pair (A,B,C,D,E). There are five correct answers. A. 1. Increase inlet gas flow rate 2. Decrease inlet gas flow rate B. 1. Increase inlet liquid flow rate 2. Decrease inlet liquid flow rate 1. Inerease number of stages 2. Decrease number of stages D. 1. Increase column pressure 2. Decrease column pressure E. 1. Increcase temperture of nlc eas and inlet liquid 2. Decrease temperature of inlet gas and inlet liquid

Explanation / Answer

Ans 1

To increase the concentration of impurity in liquid can be increased

Stripping factor S = mG/L

G = inlet gas flow rate,

L = inlet liquid flow rate

By increasing the S, we can do so

A) increase the inlet gas flow rate

B) decrease the inlet liquid flow rate

C) higher the number of stages, larger the S

D) column pressure should be decreased

E) temperature of inlet gas and liquid should be incrrased

At low pressure and high temperature, the liquid will not vaporize.

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