The minimum plate spacing in most of the petroleum refinery distillation columns (of dia > 3 ft) is normally _____________ inches?

Byadmin March 2, 2019August 23, 2021

The minimum plate spacing in most of the petroleum refinery distillation columns (of dia > 3 ft) is normally _____________ inches?

A. 6
B. 12
C. 18
D. 36

Process Equipment and Plant Design

In a rotary drier, the average retention time of solid is (where Z = length of the drier, metres ρ = apparent solid density, kg/m3 L = flow rate of dry solids, kg/see. m2 drier crosssection H = hold up of solid.) ?

In a rotary drier, the average retention time of solid is (where Z = length of the drier, metres ρ = apparent solid density, kg/m3 L = flow rate of dry solids, kg/see. m2 drier crosssection H = hold up of solid.) ?

A. Z.H.ρ/L
B. L/Z.H.ρ
C. H.ρ/L
D. Z.H/ρL

Read More In a rotary drier, the average retention time of solid is (where Z = length of the drier, metres ρ = apparent solid density, kg/m3 L = flow rate of dry solids, kg/see. m2 drier crosssection H = hold up of solid.) ?
Process Equipment and Plant Design

In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube) ?

In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube) ?

A. 4(P2 – πd2/4)/πd
B. (P2 – rd2/4)/rd
C. 4P2/πd
D. πd/4P2

Read More In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube) ?
Process Equipment and Plant Design

Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger ?

Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger ?

A. 75% cut segmental baffle
B. 25% cut segmental baffle
C. Orifice baffle
D. Disk and doughnut baffle

Read More Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger ?
Process Equipment and Plant Design

Souders Brown equation given by, U = Kv √(ρl – ρv)/ρv, is used for the calculation of the ______________ in a continuous distillation column?

Souders Brown equation given by, U = Kv √(ρl – ρv)/ρv, is used for the calculation of the ______________ in a continuous distillation column?

A. Diameter of the bubble cap column
B. Diameter of the sieve plate column
C. Tray pressure drop
D. Residence time in the downcomer for the disengagement of entrained vapour

Read More Souders Brown equation given by, U = Kv √(ρl – ρv)/ρv, is used for the calculation of the ______________ in a continuous distillation column?
Process Equipment and Plant Design

Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than ______________ mm?

Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than ______________ mm?

A. 10
B. 20
C. 30
D. 5

Read More Generally, no corrosion allowance in wall thickness of a part is required, if the thickness is more than ______________ mm?
Process Equipment and Plant Design

(Le/D) for a Tee (used as elbow, entering run) would be around _______________________?

(Le/D) for a Tee (used as elbow, entering run) would be around _______________________?

A. 5
B. 60
C. 160
D. 200

Read More (Le/D) for a Tee (used as elbow, entering run) would be around _______________________?

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