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Process Equipment and Plant Design

Process Equipment and Plant Design
Skirt support is the most suitable for supporting __________ vessels.

Large horizontal
Small horizontal
Tall vertical
Thick walled

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Process Equipment and Plant Design
Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure?

Larger dia long vessel
Strength of the vessel is same irrespective of the diameter
Larger dia vessel
Smaller dia vessel

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

20.8
2
1
∞

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Process Equipment and Plant Design
Safety valves are provided in chemical equipments to guard against excessive

Pressure/pressure fluctuation
Turbulence
Noise
Temperature

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Process Equipment and Plant Design
In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the

Lower skirt clearance
Small downcomer liquid seal
Lower static submergence
Liquid gradient on the tray

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Process Equipment and Plant Design
Corrosion allowance in the design of pressure vessel/chemical equipment is not necessary, if

Both B & C
Plain carbon steel and cast iron parts are used
Material of construction is high alloy steel
Wall thickness is > 30 mm

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