Chemical Engineering - Petroleum Refinery Engineering

26. 

The most widely used crude topping column in refineries is the __________ column.

A. bubble-cap
B. packed bed
C. fluidised bed
D. perforated plate

Answer: Option A

Explanation:

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27. 

Deoiling of wax is done by its

A. heating
B. cooling
C. solvent extraction
D. both(b)&(c)

Answer: Option D

Explanation:

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28. 

Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.

A. 50
B. 70
C. 90
D. 140

Answer: Option C

Explanation:

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29. 

Molecular weight of crude petroleum may be around

A. 50
B. 250
C. 1500
D. 5000

Answer: Option B

Explanation:

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30. 

Mercaptans is represented as (where R and R' are alkyl groups)

A. R-COOH
B. R-S-H
C. R-S-R
D. R-S-R'

Answer: Option B

Explanation:

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