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Process Equipment and Plant Design

Process Equipment and Plant Design
Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to

I.D. of the shell
40% of the I.D. of the shell
25 cms
5 cms

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Process Equipment and Plant Design
Which of the following is used to set the diameter of the distillation column?

Length of straight rectangular weir on cross-flow tray
Number of theorectical plates
Allowable vapour velocity
Static submergence

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Process Equipment and Plant Design
Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.

16
38
28
19

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Process Equipment and Plant Design
A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is

20
10
20
10

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Process Equipment and Plant Design
Pressure drop per tray in the atmospheric distillation column is about __________ psi.

43833
0.01 - 0.5
0.5 - 1.0
0.07 - 0.12

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering branch) would be

More than that for Tee (used as elbow, entering run)
Less than that for Tee (used as elbow, entering run)
Around 90
Both B and C

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