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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ tray arrangement is recommended for distillation column having diameter upto 4 ft.

Cross flow
Cascade
Radial flow
Split flow

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Process Equipment and Plant Design
In a rotary drier, the average retention time of solid is(where Z = length of the drier, metres ρ = apparent solid density, kg/m³ L = flow rate of dry solids, kg/see. m² drier cross-section H = hold up of solid.)

H.ρ/L
Z.H.ρ/L
L/Z.H.ρ
Z.H/L.ρ

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Process Equipment and Plant Design
Smaller sized packings are generally dumped to the packed columns, and the large ones of size greater than __________ mm are stacked individually, which provides better control over bed porosity and offers lower gas pressure drop.

75
150
50
25

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Process Equipment and Plant Design
The longitudinal stress induced in a thin walled cylinderical vessel under internal pressure is

pd/t
pd/4t
pd/2t
pd/8t

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Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the

None of these
Entrainment considerations
Vapour density
Diameter of the column

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Process Equipment and Plant Design
Vertical storage vessels are never supported by __________ support.

Skirt
Bracket
Lug
Saddle

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