Petroleum Refinery Engineering - Chemical Engineering Questions and Answers

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Feed for reforming is generally

naphtha or straight run gasoline.

reduced crude.

vacuum gas oil.

atmospheric gas oil.

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A fuel oil consists of 4 fractions A, B, C and D. Their molar compositions and vapour pressures are given below :

The vapour pressure of the fuel oil will be __________ mm Hg.

736

727.5

512

767.8

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Which of the following is the most important property for a jet fuel ?

Cloud point

Pour point

Colour

Freezing point

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Which parameter is used for the grading of paraffin waxes ?

Specific gravity

Melting point

Viscosity

Penetration number

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Which of the following has the minimum °API gravity of all?

Diesel

Kerosene

Petrol

Furnace oil

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Higher pressure in the reforming reactor

increases coke formation.

increases the rate of reaction.

produces high octane number gasoline.

none of these.

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Gasoline yield in catalytic reforming of naphtha may be about __________ percent by weight.

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The main reaction in reforming is the

dehydrogenation of naphthenes.

hydrogenation of naphthenes.

hydrocracking of paraffins.

saturation of olefins.

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Carbon percentage (by weight) in crude petroleum may be about