CATALYTIC CONVERSION PROCESS OF PETROLEUM HYDROCARBON IN DOUBLE REACTOR AND APPARATUS THEREOF

摘要

A catalytic conversion process of petroleum hydrocarbons in double reactor, and apparatus thereof are disclosed. The catalytic conversion process takes place in both the main reactor and the secondary reactor where reaction feedstock is lighter than the former. The first low temperature catalyst is introduced into the pre-lift section of the main reactor, and the said catalyst is conveyed to the oil/catalyst contact reaction section by the pre-lift gas and contacts with the feedstock from the feeding nozzle for the catalytic conversion reaction. The reaction mixture goes up and contacts with the second low temperature catalyst fed to the main reactor above the feeding nozzle, and the catalytic conversion reaction continues in the post-reaction section so as to complete the catalytic conversion reaction of the feedstock from the main reactor. Through flexible control over the reaction condition of the contact reaction section and post-reaction section of the reactor，thermal cracking reaction is effectively reduced, the reacting efficiency of the post-reaction section is improved. Accordingly, the reaction byproduct is effectively reduced and the product distribution is flexibly modified.