Petroleum Refinery Engineering - Chemical Engineering Questions and Answers

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Flash point of a liquid petroleum fuel gives an idea about its

volatility.

explosion hazards characteristics.

nature of boiling point diagram.

all (a), (b) and (c)

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Clay treatment of petroleum products

decolorises & stabilises cracked gasoline.

desulphurise straight run gasoline & kerosene.

adsorb arsenic from feedstock to catalytic reforming.

all (a), (b) & (c).

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Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has

high pour point and low smoke point.

low viscosity index.

high self-ingnition temperature.

all (a), (b) and.(c).

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Catalyst used in isomerisation process is

H₂SO₄

H₃PO₄

AlCl₃

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__________ treatment is done for appreciable improvement in viscosity index of lubricating oil.

Acid

Solvent extraction

Alkali

Clay

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A multigrade lubricating oil means an oil having high

viscosity index

viscosity

aniline point

flash point

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Most widely used solvent for dewaxing is

methyl-ethyl-ketone (MEK)

naphtha

petroleum ether

sodium plumbite

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Liquefied Petroleum Gas (LPG) is mainly a mixture of

propane & butane

methane & ethane

high boiling olefins

high boiling naphthenes

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Water content in the crude oil as it comes out of oil well may be upto __________ percent.