Petroleum Refinery Engineering Pick out the correct statement pertaining to catalytic cracking. With increase in the reactor temperature, gasoline yield decreases for a given conversion Percentage conversion increases with increase in the catalyst to oil ratio All of these With increase in the reactor pressure, octane number of gasoline decreases With increase in the reactor temperature, gasoline yield decreases for a given conversion Percentage conversion increases with increase in the catalyst to oil ratio All of these With increase in the reactor pressure, octane number of gasoline decreases ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering 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 Suppress coke formation Reduce gum content in gasoline Enhance the octane number of gasoline Increase the yield of light distillates Suppress coke formation Reduce gum content in gasoline Enhance the octane number of gasoline Increase the yield of light distillates ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Research octane number refers to the Low octane number motor fuels High octane number motor fuels High octane number aviation fuels Unleaded motor fuels Low octane number motor fuels High octane number motor fuels High octane number aviation fuels Unleaded motor fuels ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel). 70 0.03 3 35 70 0.03 3 35 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency? Iso-paraffins Aromatics Paraffins Naphthenes Iso-paraffins Aromatics Paraffins Naphthenes ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Clay treatment of petroleum products Adsorb arsenic from feedstock to catalytic reforming Decolorises & stabilises cracked gasoline Desulphurise straight run gasoline & kerosene All of these Adsorb arsenic from feedstock to catalytic reforming Decolorises & stabilises cracked gasoline Desulphurise straight run gasoline & kerosene All of these ANSWER DOWNLOAD EXAMIANS APP
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