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Process Equipment and Plant Design

Process Equipment and Plant Design
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.

Less than
1.25-1.50 times
2.5 times
One-fourth of

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Process Equipment and Plant Design
Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.

0.1 to 0.25
0.3 to 0.5
0.65 to 0.80
0.5 to 0.6

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Process Equipment and Plant Design
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is

< 7
< 30
> 7 < 15
> 20 < 50

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Process Equipment and Plant Design
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

1/50th
1/10th
1/20th
1/30th

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Process Equipment and Plant Design
In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon

None of these
Baffle spacing
Clearance
Pitch

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Process Equipment and Plant Design
Cylinderical shell thickness of rotary drier is generally __________ mm.

43990
43864
44180
18-22

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