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A method and system for combined processing of deoiled bitumen and aromatic-rich distillates

A technology of combined processing of deoiled asphalt and rich aromatic distillate, applied in the field of combined processing of deoiled asphalt and rich aromatic distillate, can solve the problem of low propylene yield, difficulty in transportation and utilization, Issues such as restrictions on promotion

Active Publication Date: 2022-06-28
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 method and system for combined processing of deoiled bitumen and aromatic-rich distillates
  • A method and system for combined processing of deoiled bitumen and aromatic-rich distillates
  • A method and system for combined processing of deoiled bitumen and aromatic-rich distillates

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specific Embodiment approach

[0073] The conditions of the first hydrotreating unit of deasphalted oil (DAO) in the presence of hydrogen are generally as follows: The hydrotreating technology of DAO is a fixed bed hydrotreating technology. Taking the current industrially mature fixed-bed heavy-residue hydrogenation technology as an example, the reactor or the reaction bed layer includes at least two hydrogenation catalysts, and the heavy-residue hydrogenation catalyst used refers to the hydrogenation catalyst with heavy and residual oil. Combined catalyst with functions such as hydrodemetallization, hydrodesulfurization, hydrodenitrogenation and hydrodecarbon residue. These catalysts are generally supported by porous refractory inorganic oxides such as alumina, and oxides or sulfides of Group VIB and / or Group VIII metals such as W, Mo, Co, Ni, etc. as active components, optionally Catalysts with other additives such as P, Si, F, B and other elements added, such as RDM, RCS series heavy and residual oil hyd...

Embodiment A

[0139] 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%, the Ni content was 1.5% in NiO mass, immersed for half an hour, and then treated at 180° C. for 4 hours to obtain a rich ore precursor material 1, whose properties are shown in Table 7.

[0140] Preparation of rich ore precursor material 2: Select 2000g of RPB110 pseudo-boehmite produced by Chang...

Embodiment B

[0143] A kind of vacuum residue oil is used as raw material to carry out solvent deasphalting, and the solvent used is a hydrocarbon mixture with a butane content of more than 70% by weight, and at 120° C., solvent: vacuum residue oil=3:1 (mass ratio) The solvent deasphalting was carried out under the conditions, the mass yield of DAO was 70%, and the mass yield of DOA was 30%.

[0144] The properties of the resulting DAO and DOA are shown in Table 1.

[0145] The properties of the resulting DAO and DOA are shown in Table 1.

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Abstract

The invention relates to the field of hydrocarbon oil processing, and discloses a method and system for combined processing of deoiled asphalt and oil, comprising: (11) performing solvent deasphalting on heavy raw material oil; (12) performing hydrogenation reaction on deasphalted oil , and the liquid phase effluent is introduced into the DCC unit for reaction; (2) the aromatic-rich distillate containing LCO and / or HCO is fractionated after hydrogenation saturation; (3) the deoiled bitumen and aromatics stream are mixed with hydrogen Carry out hydrogenation reaction afterward; (4) liquid phase product is subjected to fractional distillation; (51) second light component is reacted to obtain at least one product selected from gasoline component, diesel component and BTX raw material component; And (52) React the second heavy component to obtain at least one product selected from coker gasoline, coker diesel oil, coker gas oil and low-sulfur petroleum coke; or use the second heavy component as a low-sulfur bunker fuel oil component. The foregoing 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 combined processing of deoiled asphalt and aromatic-rich distillate oil and a system for combined processing of de-oiled asphalt and 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 the 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 prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2400/02C10G2400/04C10G2400/30C10G2300/1077C10G2300/107C10G2300/202C10G2300/205C10G2300/201
Inventor 杨清河贾燕子牛传峰孙淑玲胡大为戴立顺王振任亮户安鹏
Owner CHINA PETROLEUM & CHEM CORP
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