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Process Equipment and Plant Design

Process Equipment and Plant Design
Speed of industrial paddle agitator ranges from __________ rpm.

1 to 5
500 to 750
1000 to 2000
20 to 100

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Process Equipment and Plant Design
In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.

l/5th
l/50th
l/30th
l/15th

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Process Equipment and Plant Design
Frame thickness in the plate and frame filter press is normally in the range of __________ inches.

0.25 to 4
1 to 12
0.25 to 8
1 to 5

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Process Equipment and Plant Design
Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin's formula as

D = 1.6 √t
D = 3√t
D = 1.1 t
D = 1.5 t

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Process Equipment and Plant Design
A 'rupture disc' is provided in chemical equipments as an accessory meant for

Avoiding vortex formation
Creating turbulence
Enhancing mixing rate
Relieving excess pressure

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Process Equipment and Plant Design
The main purpose of providing stepping on the trays is to

Increase the residence time
Decrease the pressure drop
Facilitate handling of large flow rate of liquid
Improve the flow condition

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