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Chemical Engineering - Petroleum Refinery Engineering

Exercise : Petroleum Refinery Engineering - Section 2
11.
The proper arrangement of the petroleum fractions in order of their boiling points is
lubricating oil > diesel > petrol > LPG
lubricating oil > petrol > diesel > LPG
petrol > lubricating oil > diesel > LPG
petrol > diesel > LPG > lubricating oil
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Octane number of gasoline produced by two stage fluidised catalytic cracking process is
80
87
92
97
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
Pick out the wrong statement.
Higher specific gravity of petroleum products means higher C/H ratio.
Aromatics have lower specific gravity than corresponding paraffins.
Hydrocarbons of low specific gravity (e.g, paraffins) possess the maximum thermal energy per unit volume.
Hydrocarbons of high specific gravity (eg, aromatics) possess the maximum thermal energy per unit weight.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
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
increase the yield of light distillates.
suppress coke formation.
enhance the octane number of gasoline.
reduce gum content in gasoline.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Pick out the wrong statement.
Higher temperature is employed in visbreaking than in thermal cracking.
Pyrolysis is a mild thermal cracking process.
Lead suceptibility of petrol produced by catalytic process is more than that produced by thermal cracking.
Operating pressure and temperature in thermal cracking process is more than that in catalytic cracking process.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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