The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

1000-1500

100-150

43835

20-40

1000-1500

100-150

43835

20-40

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Process Equipment and Plant Design
The function of manholes provided in the shell of a distillation column is to

Keep a check on the liquid gradient over the plate by direct visual observation

All of these

Guard against foaming & entrainment by dumping antifoaming agent through it

Give access to the individual trays for cleaning, maintenance and installation

Keep a check on the liquid gradient over the plate by direct visual observation

All of these

Guard against foaming & entrainment by dumping antifoaming agent through it

Give access to the individual trays for cleaning, maintenance and installation

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Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

Maldistribution of gas

Gas blowing beneath cap skit

Back trapping

All of these

Maldistribution of gas

Gas blowing beneath cap skit

Back trapping

All of these

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Process Equipment and Plant Design
A cylinderical pressure vessel of volume 6 πm³ has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125N/mm² and corrosion allowance is 2 mm. The thickness of the vessel for a length/diameter ratio of 3 will be close to

5 mm

8 mm

10 mm

6 mm

5 mm

8 mm

10 mm

6 mm

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Process Equipment and Plant Design
Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.

Flared out

Fluid in

Ring plate

Nozzle or rim

Flared out

Fluid in

Ring plate

Nozzle or rim

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Process Equipment and Plant Design
Rotary driers are most economically designed for the number of heat transfer units (HTU) from

10 to 20

1.5 to 2.5

0.01 to 1

5 to 10

10 to 20

1.5 to 2.5

0.01 to 1

5 to 10

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Process Equipment and Plant Design

Process Equipment and Plant Design The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

Process Equipment and Plant Design The function of manholes provided in the shell of a distillation column is to

Process Equipment and Plant Design Excessive liquid gradient on a tray may result in the

Process Equipment and Plant Design Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.

Process Equipment and Plant Design Rotary driers are most economically designed for the number of heat transfer units (HTU) from

Process Equipment and Plant Design
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.

Process Equipment and Plant Design
The function of manholes provided in the shell of a distillation column is to

Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

Process Equipment and Plant Design
Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type.

Process Equipment and Plant Design
Rotary driers are most economically designed for the number of heat transfer units (HTU) from