A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

(ph - dt)/ph

(ph - dh . dt/2)/ph

(ph - dh)/ph

(ph - dh)/dh

(ph - dt)/ph

(ph - dh . dt/2)/ph

(ph - dh)/ph

(ph - dh)/dh

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Process Equipment and Plant Design
The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is

0.25

1.25

0.75

0.5

0.25

1.25

0.75

0.5

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Process Equipment and Plant Design
The minimum plate spacing in most of the pertroleum refinery distillation columns (of dia > 3 ft) is normally __________ inches.

34

6

18

12

34

6

18

12

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Process Equipment and Plant Design
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.

All of these

Molal flow rate of vapour

Pressure and temperature

Vapour molecular weight

All of these

Molal flow rate of vapour

Pressure and temperature

Vapour molecular weight

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Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

< 0.5

1.2

1

0.85

< 0.5

1.2

1

0.85

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Process Equipment and Plant Design
Liquid gradient over a tray can be minimised by

Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must

Using split flow, radial flow or cascade flow for column diameter large than 4 ft

Providing a higher skirt clearance or a higher weir

All of these

Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must

Using split flow, radial flow or cascade flow for column diameter large than 4 ft

Providing a higher skirt clearance or a higher weir

All of these

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Process Equipment and Plant Design

Process Equipment and Plant Design A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

Process Equipment and Plant Design The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is

Process Equipment and Plant Design The minimum plate spacing in most of the pertroleum refinery distillation columns (of dia > 3 ft) is normally __________ inches.

Process Equipment and Plant Design In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.

Process Equipment and Plant Design Joint efficiency (J) for a seamless pipe is

Process Equipment and Plant Design Liquid gradient over a tray can be minimised by

Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

Process Equipment and Plant Design
The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is

Process Equipment and Plant Design
The minimum plate spacing in most of the pertroleum refinery distillation columns (of dia > 3 ft) is normally __________ inches.

Process Equipment and Plant Design
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.

Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

Process Equipment and Plant Design
Liquid gradient over a tray can be minimised by