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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids.

None of these
Packed
Sieve plate
Bubble cap plate

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Process Equipment and Plant Design
The maximum liquid gradient over a tray must not exceed

0.5" -1.25"
Half the tray spacing
5"
2"-3.5"

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Process Equipment and Plant Design
Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around

5 and 10
45 and 75
180 and 300
300 and 500

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Process Equipment and Plant Design
The thickness of heat transfer plates used in the plate type heat exchanger ranges from __________ mm, pressed in a single piece provided with grooves & corrugations.

44055
3.5 to 7.0
1.25 to 3.125
0.3 to 0.8

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Process Equipment and Plant Design
Thin spherical shells subjected to internal pressure, develop __________ stresses.

Both A & B
Radial
Neither A nor B
Circumferential

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Process Equipment and Plant Design
A binary liquid azeotropic mixture has boiling point lower than either of the components, when it shows __________ deviation from Raoult's Law.

Negative
Positive
No
None of these

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