Chemical Engineering - Process Equipment and Plant Design

36. 

__________ tray arrangement is recommended for distillation column having diameter upto 4 ft.

A. Radial flow
B. Cross flow
C. Split flow
D. Cascade

Answer: Option B

Explanation:

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37. 

What is the value of 'q' for saturated liquid feed to a distillation column ?

A. 0
B. <1
C. 1
D. >1

Answer: Option C

Explanation:

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38. 

In perforated plate towers, the

A. hole sizes may be around 1/8" or 3/16".
B. total hole area may be around 6 to 15% of tower cross-sectional area.
C. pressure drop is less compared is similar bubble cap towers.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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39. 

The main purpose of providing stepping on the trays is to

A. increase the residence time.
B. decrease the pressure drop.
C. facilitate handling of large flow rate of liquid.
D. improve the flow condition.

Answer: Option C

Explanation:

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40. 

The operating pressure drop range in a bag filter is about __________ mm water gauge.

A. 50-150
B. 5-10
C. 500-1500
D. 1500-2500

Answer: Option A

Explanation:

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