In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.

Process Equipment and Plant Design
In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.

2.2 to 2.6

1.6 to 2

1.1 to 1.5

2.7 to 3

2.2 to 2.6

1.6 to 2

1.1 to 1.5

2.7 to 3

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of the bubble cap tray of a distillation column to give stable operation and even vapour distribution.

Tendency towards stable operation is increased by increasing the skirt clearance of the caps, lowering the rate of liquid flow per unit plate width or increasing the spacing between the caps

None of these

The pressure drop due to the caps & slots and the static submergence should be as high as practicable for reasonable operation

The dimensionless ratio of liquid gradient to pressure drop head caused by the bubble cap assembly should be less than 0.4

Tendency towards stable operation is increased by increasing the skirt clearance of the caps, lowering the rate of liquid flow per unit plate width or increasing the spacing between the caps

None of these

The pressure drop due to the caps & slots and the static submergence should be as high as practicable for reasonable operation

The dimensionless ratio of liquid gradient to pressure drop head caused by the bubble cap assembly should be less than 0.4

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Process Equipment and Plant Design
With increase in the number of shell passes, the value of FT

Remains same

Increases

Remains same, only if the number of tube passes does not change

Decreases

Remains same

Increases

Remains same, only if the number of tube passes does not change

Decreases

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

Four times

Twice

Equal to

Half

Four times

Twice

Equal to

Half

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Process Equipment and Plant Design
Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around

50% of the plate spacing

2.5"

0.5"

5"

50% of the plate spacing

2.5"

0.5"

5"

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Process Equipment and Plant Design
The necessary wall thickness for a metallic storage vessel is a function of the

All of these

Ultimate tensile strength (or yield point) of the material and operating temperature

Diameter of the vessel

Operating pressure and welding/joint efficiency

All of these

Ultimate tensile strength (or yield point) of the material and operating temperature

Diameter of the vessel

Operating pressure and welding/joint efficiency

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Process Equipment and Plant Design

Process Equipment and Plant Design In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.

Process Equipment and Plant Design Pick out the wrong statement pertaining to the design of the bubble cap tray of a distillation column to give stable operation and even vapour distribution.

Process Equipment and Plant Design With increase in the number of shell passes, the value of FT

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 Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around

Process Equipment and Plant Design The necessary wall thickness for a metallic storage vessel is a function of the

Process Equipment and Plant Design
In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of the bubble cap tray of a distillation column to give stable operation and even vapour distribution.

Process Equipment and Plant Design
With increase in the number of shell passes, the value of FT

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
Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around

Process Equipment and Plant Design
The necessary wall thickness for a metallic storage vessel is a function of the