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Process Equipment and Plant Design

Process Equipment and Plant Design
In a distillation column, minimum clearance to be maintained betweeen the overflow weir and the last row of the bubble caps is __________ cms.

7.5
2.5
15
20

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering run) would be around

350
60
200
5

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Process Equipment and Plant Design
A shell may by termed as thin if its thickness to diameter ratio is less than 0.1. The factor which can be neglected in the calculation of membrane stresses is

Elongation
Deformation
Shear
Bending

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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).

250
650
750
450

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Process Equipment and Plant Design
Column support for the roof of cylindrical storage tank must be provided for

Small diameter tall tanks
Small diameter tanks
All of these
Large diameter tanks

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Process Equipment and Plant Design
The most common standard size of bubble caps used in industrial operation is

8" dia cap with 1" dia riser
1" dia cap with 0.5" dia riser
6" dia cap with 4" dia riser
4" dia cap with 8" dia riser

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