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

20-40

100-150

43835

1000-1500

20-40

100-150

43835

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Process Equipment and Plant Design
For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness?

Hemispherical

Conical

Ellipsoidal (2 : 1)

Flat plate

Hemispherical

Conical

Ellipsoidal (2 : 1)

Flat plate

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Process Equipment and Plant Design
To avoid the tearing off the plate of an edge, the margin (i.e., the minimum distance from the centre of the rivet hole to the nearest edge of the plate) should be equal to

D

2.5 d

0.5 d

1.5 d

D

2.5 d

0.5 d

1.5 d

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Process Equipment and Plant Design
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

About 3 times

Less

Same

About 0.33 times

About 3 times

Less

Same

About 0.33 times

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Process Equipment and Plant Design
Overall distillation column efficiency for most of the refinery columns can be given by (for μ = 0.07 - 1.4 cp and relative volatility < 4) (where η = overall column efficiency, % μ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi)

Η = 17 - 61.1 log μ

Η = 0.25 log μ - 1.67

Η = 1.66 - 0.25 log μ

Η = 24.6 (Δp/μ)

Η = 17 - 61.1 log μ

Η = 0.25 log μ - 1.67

Η = 1.66 - 0.25 log μ

Η = 24.6 (Δp/μ)

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Process Equipment and Plant Design
__________ of water makes it a widely used coolant in heat exchangers.

Low viscosity

High specific heat

Low dirt factor

Low corrosiveness

Low viscosity

High specific heat

Low dirt factor

Low corrosiveness

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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 For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness?

Process Equipment and Plant Design To avoid the tearing off the plate of an edge, the margin (i.e., the minimum distance from the centre of the rivet hole to the nearest edge of the plate) should be equal to

Process Equipment and Plant Design Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

Process Equipment and Plant Design __________ of water makes it a widely used coolant in heat exchangers.

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
For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness?

Process Equipment and Plant Design
To avoid the tearing off the plate of an edge, the margin (i.e., the minimum distance from the centre of the rivet hole to the nearest edge of the plate) should be equal to

Process Equipment and Plant Design
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

Process Equipment and Plant Design
__________ of water makes it a widely used coolant in heat exchangers.