What is the slope of the operating line in the rectifying section of a distillation coloumn?

Process Equipment and Plant Design
What is the slope of the operating line in the rectifying section of a distillation coloumn?

∞

> 1

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Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Unpredictable

Same

Higher

Lower

Unpredictable

Same

Higher

Lower

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Process Equipment and Plant Design
Pick out the wrong statement about distillation operation

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

Flash distillation, differential distillation & steam distillation are all continuous distillation processes

In differential (simple) distillation, the vapour is removed as soon as it is formed without appreciable condensation

Distillation under vacuum is a substitute for steam distillation

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

Flash distillation, differential distillation & steam distillation are all continuous distillation processes

In differential (simple) distillation, the vapour is removed as soon as it is formed without appreciable condensation

Distillation under vacuum is a substitute for steam distillation

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Process Equipment and Plant Design
A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator

Both B & C

Is economical in operation

Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle

Employs high velocity, high heat transfer rate and less heating surface requirement

Both B & C

Is economical in operation

Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle

Employs high velocity, high heat transfer rate and less heating surface requirement

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Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Gas flow rate

Both A & B

Electrode area

Neither A nor B

Gas flow rate

Both A & B

Electrode area

Neither A nor B

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Process Equipment and Plant Design
The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from

0.5 to 1

1.5 to 2

2 to 2.5

1 to 1.5

0.5 to 1

1.5 to 2

2 to 2.5

1 to 1.5

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Process Equipment and Plant Design

Process Equipment and Plant Design What is the slope of the operating line in the rectifying section of a distillation coloumn?

Process Equipment and Plant Design At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Process Equipment and Plant Design Pick out the wrong statement about distillation operation

Process Equipment and Plant Design A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator

Process Equipment and Plant Design The dust collection efficiency of electrostatic precipitator increases with increase in the

Process Equipment and Plant Design The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from

Process Equipment and Plant Design
What is the slope of the operating line in the rectifying section of a distillation coloumn?

Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Process Equipment and Plant Design
Pick out the wrong statement about distillation operation

Process Equipment and Plant Design
A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator

Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Process Equipment and Plant Design
The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from