Catalytic conversion method of ethylene, propylene and aromatic hydrocarbon preparation
A technology of propylene and ethylene, applied in the field of catalytic conversion, can solve the problems of low yield of propylene and aromatics, underutilization of the potential content of low-carbon olefins, etc.
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[0083] Feedstock oil is directly used as feedstock for catalytic cracking, and the test is carried out on a medium-sized device consisting of a riser reactor. Light aromatics raffinate and C 3 -C 5 Hydrocarbons enter the bottom of reaction zone I, where light aromatics raffinate and C 3 -C 5 Hydrocarbons at a reaction temperature of 700°C and a weight hourly space velocity of 180h -1 , the weight ratio of catalytic cracking catalyst to raw material is 60, and the weight ratio of steam to raw material is 0.50 to carry out the cracking reaction; At a reaction temperature of 660°C and a weight hourly space velocity of 100h -1 , the weight ratio of catalytic cracking catalyst to raw material is 30, and the weight ratio of steam to raw material is 0.35 to carry out the cracking reaction; heavy aromatics raffinate and raw oil B enter the bottom of reaction zone III, and part of the hot regenerated catalyst is taken out from the regenerator at the same time Supplement to the bot...
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