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Process Equipment and Plant Design

Pick out the wrong statement pertaining to the design of a long tube vertical evaporator ?

Process Equipment and Plant Design /
Pick out the wrong statement pertaining to the design of a long tube vertical evaporator ?

A. Tube dia is 3-6 cms, while tube length in 3-6 metres
B. Steam is fed to the shell, whereas the liquor is filled inside the tube
C. Liquor level is maintained at 1/3rd to 1/2 of the height of the tube
D. None of these

Pick out the wrong statement pertaining to the design of a long tube vertical evaporator ? Read More »

Process Equipment and Plant Design

In case of a continuous distillation column, increase in reflux ratio may result in the______________?

Process Equipment and Plant Design /
In case of a continuous distillation column, increase in reflux ratio may result in the______________?

A. Lower fixed charges for the column
B. Greater cost for the reboiler heat supply
C. Greater cost for the condenser coolant
D. All A., B. and C.

In case of a continuous distillation column, increase in reflux ratio may result in the______________? Read More »

Process Equipment and Plant Design

In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by________________?

Process Equipment and Plant Design /
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by________________?

A. 4(0.86P2 – πd2/4)/πd
B. (P2 – πd2/4)/πd
C. 4(0.86P2 – πd2)/πd
D. (4P2 + πd2/4)/πd

In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by________________? Read More »

Process Equipment and Plant Design

In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for______________?

Process Equipment and Plant Design /
In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for______________?

A. Reducing scale deposition
B. Increasing pressure drop
C. Fixing the tubes
D. Creating turbulence

In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for______________? Read More »

Process Equipment and Plant Design

The thickness of segmental baffles (25 -35% cut truncated plates usually) is generally _____________ the tube wall thickness?

Process Equipment and Plant Design /
The thickness of segmental baffles (25 -35% cut truncated plates usually) is generally _____________ the tube wall thickness?

A. Equal to
B. Twice
C. Four times
D. Half

The thickness of segmental baffles (25 -35% cut truncated plates usually) is generally _____________ the tube wall thickness? Read More »

Process Equipment and Plant Design