ALKYLATING PROCESS FOR ALKYL BENZENES

摘要

This invention relates to an alkylating process for alkyl benzenes, including the steps of: a) an alkyl benzene and a first stream of alkylating agent being fed into a first reaction zone, contacting with a catalyst A, to produce a process stream I; b) the process stream I and a second stream of alkylating agent being fed into at least one second reaction zone, contacting with a catalyst B, to produce a process stream II; and c) the process stream II being fed into at least one third reaction zone, contacting with a catalyst C, to produce a process stream III containing an alkylate. The present alkylating process can improve the utilization efficiency of the alkylating agent.

主权项

1. An alkylating process for alkyl benzenes, including the following steps:
a) an alkyl benzene having the following formula (I) and a first stream of alkylating agent being fed into a first reaction zone, contacting with a catalyst A, to produce a process stream I, wherein the alkylating agent is at least one selected from the group consisting of methanol, formaldehyde and dimethoxy methane, wherein, Rs may be the same as or different from one another, each independently selected from the group consisting of C1-4 linear or branched alkyls, n represents the number of the substituent R and is an integer of 0, 1 or 2; b) the process stream I and a second stream of alkylating agent being fed into at least one second reaction zone, contacting with a catalyst B, to produce a process stream II; and c) the process stream II being fed into at least one third reaction zone, contacting with a catalyst C, to produce a process stream III containing an alkylate.