US 12,467,004 B2
Process and system for hydrotreating deoiled asphalt
Qinghe Yang, Beijing (CN); Shuling Sun, Beijing (CN); Dawei Hu, Beijing (CN); Chuanfeng Niu, Beijing (CN); Yanzi Jia, 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. 17/772,799
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/CN2020/125109
§ 371(c)(1), (2) Date Apr. 28, 2022,
PCT Pub. No. WO2021/083305, PCT Pub. Date May 6, 2021.
Claims priority of application No. 201911053414.X (CN), filed on Oct. 31, 2019; application No. 201911053430.9 (CN), filed on Oct. 31, 2019; application No. 201911053706.3 (CN), filed on Oct. 31, 2019; application No. 201911054142.5 (CN), filed on Oct. 31, 2019; application No. 201911054170.1 (CN), filed on Oct. 31, 2019; and application No. 201911054710.7 (CN), filed on Oct. 31, 2019.
Prior Publication US 2022/0372385 A1, Nov. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C10G 69/00 (2006.01)
CPC C10G 69/00 (2013.01) [C10G 2300/201 (2013.01); C10G 2300/202 (2013.01); C10G 2300/205 (2013.01); C10G 2300/301 (2013.01); C10G 2300/302 (2013.01); C10G 2300/305 (2013.01); C10G 2300/308 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01); C10G 2300/4018 (2013.01); C10G 2400/02 (2013.01); C10G 2400/04 (2013.01); C10G 2400/30 (2013.01)] 40 Claims
OG exemplary drawing
 
1. A process for hydrotreating deoiled asphalt, comprising:
(1) introducing a heavy oil feedstock into a solvent deasphalting unit for solvent deasphalting treatment, to provide a deoiled asphalt and a deasphalted oil;
(2) introducing a mixed feedstock obtained by mixing the deoiled asphalt and an aromatics-containing stream into a first reaction unit for hydrogenation reaction, wherein the composition and the ratio of the deoiled asphalt and the aromatics-containing stream are that the mixed feedstock is in a liquid state at a temperature of not higher than 400° C., and the deoiled asphalt and the aromatics-containing stream are used at weight ratio of 1:10 to 50:10;
(11) introducing the deasphalted oil into a third hydrogenation unit for hydrogenation reaction to obtain a liquid phase effluent, and introducing the liquid phase effluent obtained in the third hydrogenation unit into a DCC unit for reaction, to provide propylene, LCO, HCO and a slurry oil;
(13) introducing the slurry oil obtained in the DCC unit into a fourth hydrogenation unit for demetallization reaction, to provide demetallized slurry oil; and incorporating the LCO, the HCO, and/or the slurry oil obtained in the DCC unit and/or the demetallized slurry oil obtained in the fourth hydrogenation unit into the aromatics-containing stream in step (2) or using the LCO, the HCO, and/or the slurry oil obtained in the DCC unit and/or the demetallized slurry oil obtained in the fourth hydrogenation unit as the aromatics-containing stream in step (2);
(21) separating a liquid phase product from the first reaction unit into a first light component and a first heavy component, wherein the first light component and the first heavy component have a cutting point of 240-450° C., and wherein the separation is optionally carried out by fractional distillation;
(31) introducing the first light component into a second reaction unit for reaction, to provide at least one product selected from the group consisting of 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
(32) introducing the first 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 first heavy component as a low sulfur ship fuel oil component.