US 12,331,256 B2
Process and system for processing aromatics-rich fraction oil
Qinghe Yang, Beijing (CN); Yanzi Jia, Beijing (CN); Dawei Hu, Beijing (CN); Chuanfeng Niu, Beijing (CN); Shuling Sun, Beijing (CN); Lishun Dai, Beijing (CN); Zhen Wang, Beijing (CN); Anpeng Hu, Beijing (CN); Liang Ren, Beijing (CN); and Dadong Li, Beijing (CN)
Assigned to CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC, Beijing (CN)
Appl. No. 17/772,317
Filed by CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC, Beijing (CN)
PCT Filed Oct. 30, 2020, PCT No. PCT/CN2020/125068
§ 371(c)(1), (2) Date Apr. 27, 2022,
PCT Pub. No. WO2021/083302, PCT Pub. Date May 6, 2021.
Claims priority of application No. 201911053864.9 (CN), filed on Oct. 31, 2019; and application No. 201911054674.9 (CN), filed on Oct. 31, 2019.
Prior Publication US 2022/0403263 A1, Dec. 22, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C10G 67/04 (2006.01); C10G 69/00 (2006.01); C10G 69/04 (2006.01); C10G 69/06 (2006.01)
CPC C10G 67/0454 (2013.01) [C10G 69/00 (2013.01); C10G 69/04 (2013.01); C10G 69/06 (2013.01); C10G 2300/70 (2013.01); C10G 2400/02 (2013.01); C10G 2400/04 (2013.01); C10G 2400/08 (2013.01); C10G 2400/30 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A process for processing an aromatics-rich fraction oil, comprising:
(11) introducing a heavy raw oil into a solvent deasphalting unit for solvent deasphalting treatment, to provide a deoiled asphalt and a deasphalted oil;
(12) introducing the deasphalted oil into a fourth reaction unit for hydrogenation reaction, introducing a liquid phase effluent obtained in the fourth reaction unit into a DCC unit for reaction, to provide propylene, LCO, HCO and slurry oil;
(1) introducing an aromatics-rich fraction oil comprising the LCO and/or HCO from the DCC unit into a third reaction unit for hydrosaturation, followed by fractionation, to provide a first light component and a first heavy component, wherein the first light component and the first heavy component has a cutting point of 100-250° C., and the aromatic content in the first heavy component is more than or equal to 20 wt %;
(2) introducing the deoiled asphalt and an aromatics-comprising stream comprising the first heavy component from step (1) into a hydrogen dissolving unit to be mixed with hydrogen to form a mixed material, and introducing the mixed material into a first reaction unit for a hydrogenation reaction, wherein the deoiled asphalt and the aromatics-containing stream are used in such an amount ratio that a mixed feedstock formed by the deoiled asphalt and the aromatics-containing stream is in liquid state at a temperature of not higher than 400° C.;
(3) fractionating a liquid-phase product from the first reaction unit to provide a second light component and a second heavy component, wherein the cutting point for the second light component and the second heavy component is at 240-450° C.;
(41) introducing the second light component into a second reaction unit for reaction, to provide at least one product selected from a gasoline component, a diesel component and a BTX feedstock component, wherein the second reaction unit is at least one selected from the group consisting of a hydrocracking unit, a catalytic cracking unit and a diesel hydro-upgrading unit; and
(42) introducing the second heavy component into a delayed coking unit for reaction, to provide at least one product selected from the group consisting of coker gasoline, coker diesel, coker wax oil and low sulfur petroleum coke; or using the second heavy component as a component of low sulfur ship fuel oil.