反应详情

The first fractionator of unit 2, as noted before, is charged with 16,696 kg/hr of ethylene and 3,095 kg/hr of propylene from unit 4 and an ethylene/propylene recycle stream amounting to 3,350 kg/hr of ethylene and 9,675 kg/hr of propylene obtained from the effluent of the disproportionation reactor of unit 2. After separation, one stream consisting of 18,720 kg/hr of ethylene and 280 kg/hr of propylene is passed to cleavage unit 4. The bottoms, amounting to 1,326 kg/hr of ethylene and 12,490 kg/hr of propylene are combined with 3,510 kg/hr of propylene obtained from an exterior source such as a refinery stream and the combined stream is passed to the disproportionation reactor of unit 2. The effluent from the reactor, comprising 3,350 kg/hr of ethylene, 9,675 kg/hr of propylene, 4,175 kg/hr of butenes and 126 kg/hr of C5+ entrained in the ethylene/propylene stream from the first separation zone is passed to the second fractionator of unit 2. The separated ethylene/propylene stream is recycled to the first fractionator of unit 2. The butenes and the C5+ gasoline bottom product are combined with the butenes and isobutane obtained as a product of unit 4 and the combined stream is sent to alkylation zone 10.