Chemical Engineering :: Process Equipment and Plant Design
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Value of Peclet number = ∞, is the representative of
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for a Tee (used as elbow, entering branch) would be -
In most of the shell and tube heat exchangers, the tube pitch is generally __________ the tube diameter.
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In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.
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1.2 to 3.8 cms is the value of the
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Accidents in chemical plants are mostly due to
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For identical operating conditions, the pressure drop over __________ tray is the highest out of the following.
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A perforated plate has holes of diameter dn arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by
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__________ is the determining factor for the number of bubble caps to be used per tray.
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Pick out the wrong statement about distillation operation
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A.
Distillation under vacuum is a substitute for steam distillation.
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B.
In differential (simple) distillation, the vapour is removed as soon as it is formed without appreciable condensation.
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C.
In flash (equilibrium) distillation, a definite fraction of liquid is vaporised in such a way that the evolved vapour & residual liquids are in equilibrium with each other.
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D.
Flash distillation, differential distillation & steam distillation are all continuous distillation processes.
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