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Chemical Engineering - Process Equipment and Plant Design

Exercise : Process Equipment and Plant Design - Section 6
31.
The minimum tray spacing in distillation column of diameter less than 3 ft is normally __________ inches.
6
18
24
34
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Oxygen carrying pipelines in chemical industries are coloured with __________ colour.
yellow
black
blue
red
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around
0.4-0.6
0.35-0.75
0.1-0.2
0.55-0.85
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Pick out the wrong statement about the design of seive plate column and the bubble cap column.
The downcomer design and the residence time in the downcomer is almost same for seive plate and bubble cap columns.
Weir length for a bubble cap plate is the same as that for the seive plate.
Weir height for a bubble cap plate column is the same as that for a seive plate column.
Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the seive plate.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.
1/10th
1/20th
1/30th
1/50th
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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