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Process Equipment and Plant Design

Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of __________ mm.

44058
44183
43962
43895

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Process Equipment and Plant Design
The retention time of material in a rotary dryer depends upon its

Rpm
Slope & length
All of these
Flights arrangement

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Process Equipment and Plant Design
A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.

95
45
80
60

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Process Equipment and Plant Design
Bubble cap plate column is

A continuous contactor
A finite stage contactor
Used only for distillation, not for absorption
A differential stage contactor

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Process Equipment and Plant Design
Baffle width is normally taken as __________ times the tank diameter.

0.1-0.12
0.2-0.45
0.4-0.5
0.45-0.6

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Process Equipment and Plant Design
In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.

2.2 to 2.6
1.1 to 1.5
1.6 to 2
2.7 to 3

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