Use of swing preliminary alkylation reactors

摘要

Alkylation systems and processes are described herein. The alkylation system generally includes a preliminary alkylation system containing a preliminary alkylation catalyst therein and adapted to contact an aromatic compound and an alkylating agent with the preliminary alkylation catalyst so as to alkylate the aromatic compound and form a preliminary output stream, wherein the preliminary alkylation system includes a first preliminary alkylation reactor and a second preliminary alkylation reactor connected in parallel to the first preliminary alkylation reactor and a primary alkylation system adapted to receive the preliminary output stream and contact the preliminary output stream and the alkylating agent with a primary alkylation catalyst disposed therein so as to form a primary output stream.

主权项

1. An alkylation system comprising:
a preliminary alkylation system comprising a first preliminary alkylation reactor and a second preliminary alkylation reactor, wherein the second preliminary alkylation reactor is connected in parallel to the first preliminary alkylation reactor, wherein each preliminary alkylation reactor contains a preliminary alkylation catalyst therein, and wherein each preliminary alkylation catalyst in the preliminary alkylation system has a silica to alumina molar ratio ranging from 10 to 200; wherein the preliminary alkylation system is adapted to contact an aromatic compound and an alkylating agent with the preliminary alkylation catalyst so as to alkylate the aromatic compound and form a preliminary output stream, wherein the preliminary alkylation system is adapted to operate under liquid phase conditions at a temperature of from about 160° C. to about 270° C.; and a primary alkylation system adapted to receive the preliminary output stream and contact the preliminary output stream and an alkylating agent with a primary alkylation catalyst disposed therein so as to form a primary output stream, wherein the preliminary alkylation system is located upstream of the primary alkylation system.