In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

Process Equipment and Plant Design
In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

1/5-1/10th

1/2 to 1/4th

1/10-1/15th

1/20-1/30th

1/5-1/10th

1/2 to 1/4th

1/10-1/15th

1/20-1/30th

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Process Equipment and Plant Design
Diameter of the seive tray column is determined by the

Height of the plate spacing

Upper limit of the vapour velocity

Hole diameter of the seive tray

Lower limit of vapour velocity

Height of the plate spacing

Upper limit of the vapour velocity

Hole diameter of the seive tray

Lower limit of vapour velocity

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Process Equipment and Plant Design
For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used?

(0.8)0.5

0.8

0.9

1

(0.8)0.5

0.8

0.9

1

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Process Equipment and Plant Design
__________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids.

Sieve plate

None of these

Bubble cap plate

Packed

Sieve plate

None of these

Bubble cap plate

Packed

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a basket type evaporator.

There is no central downtake

Downtake is formed by the annular space between the bundle and the shell

The tube bundle is suspended on bracket

It is used for high viscosity liquor having large rate of scaling

There is no central downtake

Downtake is formed by the annular space between the bundle and the shell

The tube bundle is suspended on bracket

It is used for high viscosity liquor having large rate of scaling

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Process Equipment and Plant Design
Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.

2500

15000

7500

1250

2500

15000

7500

1250

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Process Equipment and Plant Design

Process Equipment and Plant Design In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

Process Equipment and Plant Design Diameter of the seive tray column is determined by the

Process Equipment and Plant Design __________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids.

Process Equipment and Plant Design Pick out the wrong statement pertaining to the design of a basket type evaporator.

Process Equipment and Plant Design Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.

Process Equipment and Plant Design
In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.

Process Equipment and Plant Design
Diameter of the seive tray column is determined by the

Process Equipment and Plant Design
__________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids.

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a basket type evaporator.

Process Equipment and Plant Design
Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m².°C.