Petroleum Refinery Engineering - Chemical Engineering Questions and Answers

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__________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation.

Magnesium

Potassium

Calcium

Sodium

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Molecular weight of petrol may be about

40-60

100-130

250-300

350-400

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Which of the following factors does not govern the mechanism of petroleum formation from organic sources ?

pH of the soil

Bacterial action

Heat

Pressure

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Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).

5-10

30-80

150-250

350-400

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Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute.

1 to 5

30 to 80

250 to 350

450 to 500

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Which of the following petroleum products contain minimum sulphur ?

Naphtha

Kerosene

LSHS

Furnace oil

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Concentration of H₂SO₄ catalyst in alkyla-tion is kept between 90-98%, because H₂SO₄ having concentration

less than 90% promotes polymerisation.

more than 98% promotes cracking.

both (a) and (b).

neither (a) nor (b).

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High aniline point of a petrofuel (say diesel) indicates that

it is highly aromatic in nature.

it is highly paraffinic in nature.

it has a very low diesel index.

its ignition quality is very poor.