Patent ID: 9095831
Filing Date: 2015-08-04
Classification: B01J,C07C,Y02P

Abstract:
1. In a fluid bed reactor system for the manufacture of xylene by an alkylation reaction comprising contact of an alkylating agent selected from methanol, dimethyl ether, and mixtures thereof with an aromatic hydrocarbon selected from benzene, toluene, and mixtures thereof, in the presence of a catalyst that promotes said alkylation reaction, the improvement comprising the staged injection of at least one of said alkylating agent and said aromatic hydrocarbon, wherein said reactor system is characterized by plural injection stages separated by baffle material, said baffle material characterized as suitable to decrease at least one of gas phase back-mixing, by-pass phenomena, and gas bubble size in the manufacture of xylene by said alkylation reaction but allow said catalyst to pass through said baffle material.