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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ is the determining factor for the number of bubble caps to be used per tray.

Liquid load
Tray diameter
Permissible slot velocity
Vapor load

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Process Equipment and Plant Design
Which of the following types of reactors is the safest from operation point of view?

A vapor phase reactor
A liquid phase reactor
A liquid phase catalytic reactor
Pot type reactor

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Process Equipment and Plant Design
Larger depth of liquid on the trays of a distillation column

Both A & B
Results in higher pressure drop per tray
Neither A nor B
Leads to high tray efficiency

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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 0.08
0 to 1.5
0 to 0.8

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Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

20-40
43835
100-150
1000-1500

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Process Equipment and Plant Design
Optimum reflux ratio in a continuous distillation column is determined by the

Maximum permissible vapour velocity
None of these
Flooding limit of the column
Total cost consideration (fixed cost of the column plus the cooling water & steam cost)

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