Patent ID: 8603407
Filing Date: 2013-12-10
Classification: B01J,C07C

Abstract:
1. A catalytic isobutane alkylation reactor with reduced polymer formation on a fixed-bed alkylation catalyst comprising: a) an outer tube defining an outer tube interior surface and an outer tube exterior surface; b) an alkylation catalyst deposited on at least a portion of the outer tube interior surface defining a catalyst surface; and c) a porous metal tube positioned within the outer tube defining a porous metal tube interior surface and a porous metal tube exterior surface and providing a uniform flow rate over the length of the porous metal tube from the porous metal tube exterior surface to the outer tube interior surface; d) wherein under operative conditions when passing a feed of isobutane between the porous metal tube exterior surface and the outer tube interior surface and when passing a feed of olefin into the porous metal tube, an olefin surface concentration at the catalyst surface is maintained at an isobutane-to-olefin ratio greater than 50 times the isobutane-to-olefin ratio of the feeds of isobutane and olefin.