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Process Equipment and Plant Design

Process Equipment and Plant Design
In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds.

8
80
180
1

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Process Equipment and Plant Design
For high pressure process equipments/vessels, the connected nozzle should be

Screwed
Brazed
Flanged
Welded

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

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

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

Temperature
Turbulence
Pressure/pressure fluctuation
Noise

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Process Equipment and Plant Design
The force due to wind load acting on a tall vessel depends upon its

Shape
Height
Outside diameter
All of these

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Process Equipment and Plant Design
For a given design of bubble cap, the number of bubble caps to be used per tray is set by the

Diameter of the column
Allowable gas velocity through the slots
All of these
Plate spacing

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