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Process Equipment and Plant Design

Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Eddy diffusivity = 0
Complete back mixing
Plug flow
Laminar flow

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Process Equipment and Plant Design
The raio, (properller agitator dia/tank dia) is normally taken as

0.15-030
0.60-0.90
0.5-0.65
0.75-0.85

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Process Equipment and Plant Design
In a heat exchanger, shell side fluid velocity can be changed by changing the tube

Neither A nor B
Layout
Pitch
Both A & B

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Process Equipment and Plant Design
Maximum acceptable total liquid gradient over a tray is about __________ mm.

45.5
30.5
12.5
5.5

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Process Equipment and Plant Design
Liquid gradient over the tray results due to the

Large plate spacing
Large reflux ratio
Resistance offered to flow of liquids by caps & risers and the flow of gas
Low gas velocity

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Process Equipment and Plant Design
Movement of pipeline caused by thermal expansion is taken care by providing

Expansion joint
All of these
Change in the shape of pipeline
Changes in its direction

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