KATALYTISCHER ALKYLIERUNGSPROZESS IN DER FLÜSSIGPHASE

摘要

The instant invention relates to a fluid catalytic isoparaffin-olefin alkylation process in which a circulating fluidized-bed reactor is employed and the catalyst is continuously regenerated. A solid catalyst which comprises a large pore zeolite contacts the feed in the riser of the reactor. Both the feed and the catalysts are maintained in vapor phase. Following recovery from the product, at least a portion of the catalyst is recycled to the reactor following steam stripping and gas purging. The remainder is passed to the regenerator for the removal of coke, then is recycled to the riser. C5+ alkylate product and isobutane are separated from the hydrocarbon effluent. Isobutane is recycled to the riser.