Petroleum Refinery Engineering Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil Lower octane number of petrol Higher gum forming material in petrol Higher sulphur content in the product Gives higher yield of petrol Lower octane number of petrol Higher gum forming material in petrol Higher sulphur content in the product Gives higher yield of petrol ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to Maintain the reaction temperature Obviate catalyst poisoning Hydrogenate the feed stock Sustain the reactor pressure Maintain the reaction temperature Obviate catalyst poisoning Hydrogenate the feed stock Sustain the reactor pressure ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Crude topping column operates at __________ pressure. Atmospheric 10 atm 3 atm Vacuum Atmospheric 10 atm 3 atm Vacuum ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Solvent used in duo-sol extraction for lube oil upgradation is a mixture of Propane & liquid sulphur dioxide Phenol & furfural Methyl ethyl ketone & glycol Propane & phenol-cresol mixture Propane & liquid sulphur dioxide Phenol & furfural Methyl ethyl ketone & glycol Propane & phenol-cresol mixture ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Concentration of H₂SO₄ catalyst in alkyla-tion is kept between 90-98%, because H₂SO₄ having concentration More than 98% promotes cracking Less than 90% promotes polymerisation Both A & B Neither A nor B More than 98% promotes cracking Less than 90% promotes polymerisation Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Testing of the knocking characteristics of petrofuels is done in a __________ engine. Stirling CFR (Co-operative fuel research) Diesel Carnot Stirling CFR (Co-operative fuel research) Diesel Carnot ANSWER DOWNLOAD EXAMIANS APP
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