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Process Equipment and Plant Design

Process Equipment and Plant Design
The minimum plate spacing in most of the pertroleum refinery distillation columns (of dia > 3 ft) is normally __________ inches.

34
12
18
6

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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
Wall thickness is > 30 mm
Both B & C
Plain carbon steel and cast iron parts are used

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Process Equipment and Plant Design
Which of the following types of reactors is the safest from operation point of view?

Pot type reactor
A liquid phase catalytic reactor
A vapor phase reactor
A liquid phase reactor

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Process Equipment and Plant Design
Filtration rate is affected by the

Cake & filter medium resistance
All of these
Area of filtering surface & the viscosity of filtrate
Pressure drop across the cake & filter medium

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Process Equipment and Plant Design
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.

Molal flow rate of vapour
Vapour molecular weight
Pressure and temperature
All of these

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Process Equipment and Plant Design
Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate?

Triangular pitch
Diagonal square pitch
Heat transfer rate is independent of tube arrangement
Square pitch

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