Apparatus and method for the preparation of paraxylene with methanol and / or dimethylether and benzene and the simultaneous preparation of low carbon olefins

摘要

By methanol and / or dimethylether and benzene comprising a first reactor feed distributor 3-1 and a plurality of second reactor feed distributors 3-2 to 3-n arranged along the gas flow direction of the reaction zone. A high speed fluidized bed reactor 1 for the simultaneous production of paraxylene and low carbon olefins is disclosed. In the process of preparing paraxylene with methanol and / or dimethyl ether and benzene and simultaneous preparation of low carbon olefins, the problem of competition between MTO and alkylation reactions is improved, and the synergistic action of benzene and alkylation reactions is realized. Improves conversion, yield of paraxylene and selectivity of low carbon olefins.