Patent ID: 9433917
Filing Date: 2016-09-06
CPC Classification: B01J,C07C

Claim Text:
1. An alkylation unit comprising: an olefin source in fluid communication with a first isoparaffin-olefin admixture conduit and a second isoparaffin-olefin admixture conduit; an isoparaffin source in fluid communication with the first isoparaffin-olefin admixture conduit and the second isoparaffin-olefin admixture conduit; a first alkylation reactor in fluid communication with the first isoparaffin-olefin admixture conduit and an alkylation catalyst feed conduit supplying an alkylation catalyst, the first alkylation reactor including a heat transfer device for removing heat of reaction from the first alkylation reactor; a second alkylation reactor having a plurality of reaction zones, a first reaction zone of the plurality of reaction zones being in fluid communication with the first alkylation reactor for receiving an effluent of the first alkylation reactor, a second reaction zone of the plurality of reaction zones being in fluid communication with the first reaction zone for receiving a first reaction zone effluent, the second reaction zone of the plurality of reaction zones also being in fluid communication with the second isoparaffin-olefin admixture conduit; and a settler in fluid communication with the second alkylation reactor, the settler receiving an effluent of the second alkylation reactor, the settler separating the effluent of the second alkylation reactor into a hydrocarbon stream and an alkylation catalyst effluent stream.