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A kind of method and system for processing aromatic-rich distillate oil

A technology for distillate oil and aromatics, which is applied in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc. It can solve the problems of short operation period, low hydrogen content of hydrogenated residue, low yield of propylene, etc., and achieve good hydrogenation Effects of Processing Effects

Active Publication Date: 2022-07-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve this problem, the residual oil solvent deasphalting (demetallization)-hydrotreating-catalytic cracking combined process technology (SHF) developed by Sinopec Petrochemical Research Institute is to maximize the production of vehicle-use oil from low-value vacuum residue An innovative technology that cleans fuel and prolongs the operating cycle, but due to the high softening point of deoiled asphaltenes (DOA), it is difficult to transport and utilize, which limits the promotion of SHF technology
[0005] The new combined process of residuum hydrogenation-catalytic cracking (DCC) producing more propylene in the transition to chemical industry is also limited by the influence of asphaltenes and metals in the residuum, the hydrogen content of the hydrogenated residuum is low, and the The operation cycle is short and the DCC propylene yield is low, which affects the economic benefits of the combined technology

Method used

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  • A kind of method and system for processing aromatic-rich distillate oil
  • A kind of method and system for processing aromatic-rich distillate oil
  • A kind of method and system for processing aromatic-rich distillate oil

Examples

Experimental program
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Effect test

Embodiment A

[0120] Preparation of rich ore precursor material 1: Select 2000 g of RPB110 pseudo-boehmite produced by Sinopec Catalyst Co., Ltd. Changling Branch, of which 1000 g is treated at 550 ° C for 2 hours to obtain about 700 g of alumina, and about 700 g of alumina and another 1000 g of pseudo-boehmite are obtained. The boehmite was thoroughly mixed, then 40g of saffron powder and 20g of citric acid were added, and 2200g of deionized water was added, kneaded and extruded into strips, dried at 300°C for 3h to obtain about 1730g of carrier, and 2100mL of Mo and Ni were added. The solution is saturated and impregnated, and the Mo content in the solution is the same as MoO 3 The mass was 5.5%, and the Ni content was 1.5% by mass of NiO. It was immersed for half an hour, and then treated at 180° C. for 4 hours to obtain a rich ore precursor material 1. The properties are shown in Table 6.

[0121] Preparation of rich ore precursor material 2: Select 2000 g of RPB110 pseudo-boehmite prod...

Embodiment 1

[0124] The aromatic-rich distillate used in this example is LCO, which comes from the RLG unit of Shanghai Petrochemical. The LCO hydrogenation operating conditions are: the reaction temperature is 290°C, the reaction pressure is 4MPa, and the liquid hourly volume space velocity is 1h -1 , the volume ratio of hydrogen to oil is 800:1.

[0125] The properties of the LCO and the first heavy component 1 are shown in Table 1.

[0126] DOA comes from a vacuum residue, and is mixed with the first heavy component 1 in a mass ratio of 1:10. The properties of the mixed raw materials are shown in Table 2.

[0127] The mixed raw material of DOA and the first heavy component 1 is firstly in the hydrogen dissolving unit (the volume ratio of the feeding amount of hydrogen to the mixed raw material of the deoiled asphalt and the first heavy component 1 is 100, and the operating temperature of the hydrogen dissolving unit is 320 ℃, the pressure is 10 MPa) and mixed with hydrogen, and the obt...

Embodiment 2

[0131] The aromatic-rich distillate used in this example is HCO, which comes from the catalytic cracking unit of Shanghai Petrochemical. The HCO hydrogenation operating conditions are: the reaction temperature is 330°C, the reaction pressure is 6MPa, and the liquid hourly volume space velocity is 1h -1 , the volume ratio of hydrogen to oil is 800:1.

[0132] The properties of HCO and the first heavy component 2 are shown in Table 1.

[0133] DOA comes from a vacuum residue, and is mixed with the first heavy component 2 in a mass ratio of 5:10. The properties of the mixed raw materials are shown in Table 2.

[0134] The mixed raw material of DOA and the first heavy component 2 of HCO after hydrogenation is first in the hydrogen dissolving unit (the volume ratio of the amount of hydrogen fed to the mixed raw material of the deoiled asphalt and the first heavy component 2 is 100, and the dissolved hydrogen The unit operating temperature is 320 ° C, the pressure is 10 MPa), and t...

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Abstract

The invention relates to the field of hydrocarbon oil processing, and discloses a method and system for processing aromatic-rich distillate oil. components and the first heavy component; (2) introducing the deoiled asphalt and the stream containing aromatic hydrocarbons into the hydrogen dissolving unit to be mixed with hydrogen, and introducing the mixed materials into the first reaction unit for hydrogenation reaction, the second A reaction unit is a liquid-phase hydrogenation reaction unit; (3) fractional distillation of the liquid-phase product from the first reaction unit to obtain the second light component and the second heavy component; (41) the second light component Introducing into the second reaction unit for reaction; and (42) introducing the second heavier component into the delayed coking unit for reaction; or as a low sulfur marine fuel oil component. The aforementioned treatment process provided by the present invention can realize high-value utilization of DOA.

Description

technical field [0001] The invention relates to the field of hydrocarbon oil processing, in particular to a method for processing aromatic-rich distillate oil and a system for processing aromatic-rich distillate oil. Background technique [0002] Efficient conversion of residual oil is the core of oil refining enterprises. The hydrogenation of fixed-bed residue oil is a key technology for the efficient conversion of residue oil, which has the characteristics of good product quality and mature technology. [0003] However, the high content of asphaltenes and metals in the residual oil is the limiting factor for the operation cycle of the fixed-bed residual oil hydrotreating unit. [0004] To solve this problem, the combined process technology of residual solvent deasphalting (demetallization)-hydroprocessing-catalytic cracking (SHF) developed by Sinopec Petrochemical Research Institute is to maximize the production of automotive products from low-value vacuum residues. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2300/70C10G2400/04C10G2400/02
Inventor 贾燕子杨清河牛传峰胡大为孙淑玲戴立顺任亮李大东
Owner CHINA PETROLEUM & CHEM CORP
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