US 12,168,755 B2
Method and system for treating catalytic cracking reaction product and use thereof
Di Wang, Beijing (CN); Xiaoli Wei, Beijing (CN); Jianhong Gong, Beijing (CN); Jingchuan Yu, Beijing (CN); and Jiushun Zhang, Beijing (CN)
Assigned to CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC, Beijing (CN)
Appl. No. 17/755,489
Filed by CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC, Beijing (CN)
PCT Filed Aug. 4, 2020, PCT No. PCT/CN2020/106745
§ 371(c)(1), (2) Date Apr. 29, 2022,
PCT Pub. No. WO2021/082578, PCT Pub. Date May 6, 2021.
Claims priority of application No. 201911048194.1 (CN), filed on Oct. 30, 2019.
Prior Publication US 2022/0396740 A1, Dec. 15, 2022
Int. Cl. C10G 69/04 (2006.01); C10G 7/00 (2006.01); C10G 45/44 (2006.01); C10G 61/04 (2006.01); C10G 63/08 (2006.01); C10G 67/04 (2006.01); C10G 69/00 (2006.01)
CPC C10G 69/04 (2013.01) [C10G 7/00 (2013.01); C10G 45/44 (2013.01); C10G 61/04 (2013.01); C10G 63/08 (2013.01); C10G 67/0481 (2013.01); C10G 69/00 (2013.01); C10G 2300/1059 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01); C10G 2300/4018 (2013.01); C10G 2300/4081 (2013.01); C10G 2400/20 (2013.01); C10G 2400/30 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A method for treating a catalytic cracking product, comprising the steps of:
feeding a first feed into a catalytic cracking reactor for catalytic cracking reaction in presence of a catalytic cracking catalyst to produce the catalytic cracking product;
carrying out a first fractionation on the catalytic cracking product to obtain a heavy gasoline and a light gasoline, wherein the light gasoline has an initial boiling point of about 20-40° C. and a final boiling point of about 80-100° C., the heavy gasoline has an initial boiling point of about 80-100° C. and a final boiling point of about 200-250° C.;
carrying out a second fractionation on a second feed to obtain a heavy fraction of gasoline and a middle fraction of gasoline, wherein the middle fraction of gasoline comprises C6-C8 light aromatics, has an initial boiling point of about 80-100° C., and a final boiling point of about 120-150° C., and the heavy fraction of gasoline comprises C9+ aromatics, has an initial boiling point of about 120-150° C., and a final boiling point of about 200-250° C.;
carrying out an aromatics extraction on the middle fraction of gasoline to obtain BTX aromatics and an aromatic raffinate oil;
sending the heavy fraction of gasoline to a fluidized reactor for dealkylation in the presence of hydrogen and a dealkylation catalyst to obtain a dealkylated liquid product and a spent dealkylation catalyst; and
wherein the first feed comprises a hydrocarbon-containing feedstock oil, the light gasoline and the aromatic raffinate oil, and
wherein the second feed comprises the heavy gasoline and the dealkylated liquid product,
wherein the catalytic cracking product comprises a catalytic cracking oil gas, and a catalytic cracking gasoline.