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Process Equipment and Plant Design

A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator__________________?

A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator__________________?

A. Is economical in operation
B. Employs high velocity, high heat transfer rate and less heating surface requirement
C. Employs a centrifugal pump placed between external downtake from vapor drum and inlet to
tube bundle
D. Both B. & C.

A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator__________________? Read More »

Process Equipment and Plant Design

An adequate clearance between the tray and the shell wall of a distillation column is provided to_____________________?

An adequate clearance between the tray and the shell wall of a distillation column is provided to_____________________?

A. Drain the liquid from the tray when the unit is not in operation
B. Allow for thermal expansion and facilitate installation
C. Avoid back-trapg
D. None of these

An adequate clearance between the tray and the shell wall of a distillation column is provided to_____________________? Read More »

Process Equipment and Plant Design

Theoretically calculated diameter of the stripping section of the continuous rectification column is ______________ that of the enriching section?

Theoretically calculated diameter of the stripg section of the continuous rectification column is ______________ that of the enriching section?

A. Less than
B. More than
C. Same as
D. Either more or less (depending upon relative volatility

Theoretically calculated diameter of the stripping section of the continuous rectification column is ______________ that of the enriching section? Read More »

Process Equipment and Plant Design

In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area) ?

In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area) ?

A. Aa = Sa
B. 1.2 Aa = 1.2 Sa
C. Sa = 1.5 Aa
D. Aa = 1.5 Sa

In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area) ? Read More »

Process Equipment and Plant Design