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Process Equipment and Plant Design

Process Equipment and Plant Design
Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer).

450
750
250
650

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Process Equipment and Plant Design
Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to

I.D. of the shell
5 cms
40% of the I.D. of the shell
25 cms

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Process Equipment and Plant Design
Maximum plate efficiency is achieved in case of __________ flow.

Split
Reverse
Cross
Cascade

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Process Equipment and Plant Design
1.2 to 3.8 cms is the value of the

All of these
Downcomer liquid seal in case of a balanced tray design
Skirt clearance for bubble caps
Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm.)

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Process Equipment and Plant Design
Baffle spacing is generally __________ the I.D. of the shell.

Not less than one fifth of
Both B and C
Not greater than
More than

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Process Equipment and Plant Design
Bubble cap plate column is

Used only for distillation, not for absorption
A finite stage contactor
A continuous contactor
A differential stage contactor

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