Chemical Engineering - Petroleum Refinery Engineering

21. 

The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to

A. obviate catalyst poisoning.
B. maintain the reaction temperature.
C. sustain the reactor pressure.
D. hydrogenate the feed stock.

Answer: Option C

Explanation:

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22. 

The order of preference for feedstock to a catalytic reformer is

A. catalytic naphtha - coking naphtha - virgin naphtha.
B. coking naphtha - virgin naphtha - catalytic naphtha.
C. virgin naphtha - catalytic naphtha - coking naphtha.
D. virgin naphtha - coking naphtha - catalytic naphtha.

Answer: Option B

Explanation:

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23. 

True vapour pressure of a petroleum fraction __________ Reid vapour pressure.

A. is less than
B. is more than
C. is same as
D. may be either more or less than

Answer: Option B

Explanation:

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24. 

Hydrocracking employs

A. high pressure & temperature.
B. low pressure & temperature.
C. high pressure and low temperature.
D. high temperature and low pressure.

Answer: Option A

Explanation:

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25. 

Sour crude means the __________ bearing crude.

A. asphalt
B. sulphur compounds
C. wax
D. nitrogen compounds

Answer: Option B

Explanation:

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