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Process Equipment and Plant Design

Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation ?

Process Equipment and Plant Design /
Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation ?

A. Sorel-Lewis method
B. McCabe-Thiele’s method
C. Ponchon-Savarit method
D. None of these

Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation ? Read More »

Process Equipment and Plant Design

Fouling factor must be included in the calculation of overall design heat transfer coefficient, when the liquid__________________?

Process Equipment and Plant Design /
Fouling factor must be included in the calculation of overall design heat transfer coefficient, when the liquid__________________?

A. Containing suspended solids flows at low velocity
B. Containing suspended solids flows at high velocity
C. Is highly viscous
D. Is of high specific gravity

Fouling factor must be included in the calculation of overall design heat transfer coefficient, when the liquid__________________? Read More »

Process Equipment and Plant Design

Overall tray efficiency of a distillation column is the ratio of the number of ___________________?

Process Equipment and Plant Design /
Overall tray efficiency of a distillation column is the ratio of the number of ___________________?

A. Overall gas transfer units to the number of ideal trays required
B. Ideal trays required to the number of real trays required
C. Real trays required to the number of ideal trays required
D. None of these

Overall tray efficiency of a distillation column is the ratio of the number of ___________________? Read More »

Process Equipment and Plant Design

An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by______________?

Process Equipment and Plant Design /
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by______________?

A. An increase in liquid viscosity
B. An increase in relative volatility for rectification columns
C. Decrease in gas solubility for absorbers
D. All A., B. and C.

An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by______________? Read More »

Process Equipment and Plant Design

Vertical condenser is advantageous to the horizontal condenser from operation point of view, when________________?

Process Equipment and Plant Design /
Vertical condenser is advantageous to the horizontal condenser from operation point of view, when________________?

A. Hydrostatic head is required for refluxing the condensate
B. Only the function of condensation is to be carried out
C. Sub-cooling of condensate is desired
D. Both the functions of condensation & sub cooling are carried out in a single unit

Vertical condenser is advantageous to the horizontal condenser from operation point of view, when________________? Read More »

Process Equipment and Plant Design