摘要:
A hydrocarbon conversion process for the production of motor fuel blending stocks from propane and butane is disclosed. Preferably a charge stream comprising a mixture of C.sub.3 -C.sub.4 saturated hydrocarbons is split into a C.sub.3 stream passed into a dehydrogenation zone and a C.sub.4 stream passed into an isostripper column. Normal butanes are removed from the isostripper and passed into an isomerization zone, with product isobutane being concentrated by fractionation in the isostripper. Isobutane and propylene from the dehydrogenation zone are then reacted in an alkylation zone which produces C.sub.5 -plus product hydrocarbons. The effluent of the alkylation zone enters the isostripper. The product stream and a propane-containing stream are withdrawn from the isostripper, with the propane-containing stream being passed into a second separation zone. Alternative butane fractionation systems are disclosed.
摘要:
A multi-step hydrocarbon conversion process for producing gasoline from propane is disclosed. Propane is passed into a dehydrogenation zone and the entire dehydrogenation zone effluent is then passed into a catalytic condensation zone wherein propylene is converted into C.sub.6 and C.sub.9 hydrocarbons. The condensation zone effluent, a stripper overhead stream and an absorber bottoms stream are commingled and then separated into vapor and liquid portions. The liquid is passed into the stripper, and the vapor portion is contacted with stripper bottoms liquid in an absorber. The absorber overhead stream is contacted with liquid propane in a second absorber to remove C.sub.6 hydrocarbons and is then recycled to the dehydrogenation zone. Depropanizing a portion of the stripper bottoms yields the liquid propane and a gasoline product.
摘要:
An alkylatable reactant is alkylated with an olefin-acting reactant, utilizing a fluid HF catalyst in a countercurrent flow reaction chamber wherein reactants are flowing upward and the fluid catalyst is flowing downward. The fluid catalyst enters the reaction chamber at the top and is withdrawn at the bottom. Reaction chamber effluent passes into a settling chamber wherein it is separated into a catalyst phase and a hydrocarbon phase, the latter passing through a second reaction chamber in which it contacts a countercurrent flow of higher concentration fluid HF catalyst, and into a final settling chamber, wherein a hydrocarbon reaction product phase is separated from a catalyst phase and withdrawn. Also disclosed is a novel unitary alkylation vessel comprising, in combination, a countercurrent reaction chamber, a settling chamber, a second reaction chamber, and a final settling chamber.
摘要:
A process for producing hydrocarbon alkylate from an isoparaffin and an olefin-acting agent. The isoparaffin, the olefin and a first, relatively low strength hydrogen fluoride catalyst are contacted in an alkylation reaction to form a reaction mixture, the reaction mixture is settled to separate a first hydrocarbon phase from the low strength catalyst phase, the first hydrocarbon phase is admixed with a second, relatively higher strength hydrogen fluoride catalyst phase in an alkylation soaker, the effluent from the soaker is settled to separate a second hydrocarbon phase from the high strength catalyst phase, and the hydrocarbon alkylate is recovered from the second hydrocarbon phase.