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Process Equipment and Plant Design

Process Equipment and Plant Design
In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area)

Aa = Sa
Sa = 1.5 Aa
1.2 Aa = 1.2 Sa
Aa = 1.5 Sa

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Process Equipment and Plant Design
Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

0 to 2.2
0 to 1.5
0 to 0.08
0 to 0.8

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Process Equipment and Plant Design
Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

Less
Either A or B; no generalisation can be made
More
Same

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Process Equipment and Plant Design
The normal range of velocity of steam in pipes is __________ m/sec.

80-100
10-20
0.1-0.5
1-5

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Process Equipment and Plant Design
Liquid gradient over the tray results due to the

Large reflux ratio
Resistance offered to flow of liquids by caps & risers and the flow of gas
Low gas velocity
Large plate spacing

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Process Equipment and Plant Design
Removable connection of tubes to tube sheet is called

Saddle
Socket
Ferrule
Nipple

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