Chemical Engineering :: Petroleum Refinery Engineering
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The proper arrangement of the petroleum fractions in order of their boiling points is
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Octane number of gasoline produced by two stage fluidised catalytic cracking process is
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Pick out the wrong statement.
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Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm2 is maintained during cracking mainly to
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Pick out the wrong statement.
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Testing of the knocking characteristics of petrofuels is done in a __________ engine.
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Name the hydrocarbon having the poorest oxidation stability.
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Olefins are
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Which of the following is desirable in diesel and kerosene but is undersirable in gasoline ?
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A.
Higher specific gravity of petroleum products means higher C/H ratio.
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B.
Aromatics have lower specific gravity than corresponding paraffins.
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C.
Hydrocarbons of low specific gravity (e.g, paraffins) possess the maximum thermal energy per unit volume.
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D.
Hydrocarbons of high specific gravity (eg, aromatics) possess the maximum thermal energy per unit weight.
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A.
Higher temperature is employed in visbreaking than in thermal cracking.
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B.
Pyrolysis is a mild thermal cracking process.
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C.
Lead suceptibility of petrol produced by catalytic process is more than that produced by thermal cracking.
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D.
Operating pressure and temperature in thermal cracking process is more than that in catalytic cracking process.
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