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Method and system for processing heavy raw oil and aromatic-rich distillate oil

A technology for feedstock oil and distillate oil, which is applied in the system field of processing heavy feedstock oil and aromatic-rich distillate oil, can solve the problems of short operation period, affecting the economic benefits of combined technologies, and restricting promotion.

Active Publication Date: 2021-05-04
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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  • Method and system for processing heavy raw oil and aromatic-rich distillate oil
  • Method and system for processing heavy raw oil and aromatic-rich distillate oil
  • Method and system for processing heavy raw oil and aromatic-rich distillate oil

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specific Embodiment approach

[0074] The conditions of the first hydrogenation unit of deasphalted oil (DAO) in the presence of hydrogen are generally as follows: the hydroprocessing technology of DAO is a fixed-bed hydroprocessing technology. Taking the relatively mature fixed-bed heavy and residual oil hydrogenation technology in the industry as an example, the reactor or reaction bed includes at least two hydrogenation catalysts, and the heavy residue hydrogenation catalyst used refers to the hydrogenation catalyst with heavy and residual oil A combined catalyst with the functions of hydrodemetallization, hydrodesulfurization, hydrodenitrogenation and hydrodecarbonization. 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. Catalysts added with various additives such as P, Si, F, B and other elements, such as RDM, RCS series heavy and residual oil hyd...

Embodiment A

[0133] Preparation of rich ore precursor material 1: Select 2000g of RPB110 pseudoboehmite produced by Changling Branch of Sinopec Catalyst Co., Ltd., of which 1000g was treated at 550°C for 2h to obtain about 700g of alumina, and about 700g of alumina and another 1000g of pseudoboehmite Mix the boehmite thoroughly, then add 40g of scallop powder and 20g of citric acid, and add 2200g of deionized water, knead and extrude into strips, dry at 300°C for 3 hours to obtain about 1730g of carrier, add 2100mL of Mo and Ni-containing The solution is saturated impregnated, and the Mo content in the solution is expressed as MoO 3 The mass is 5.5%, and the Ni content is 1.5% by NiO mass. It is immersed for half an hour, and then treated at 180° C. for 4 hours to obtain the rich ore precursor material 1 . Properties are shown in Table 7.

[0134] Preparation of rich ore precursor material 2: Select 2000g of RPB110 pseudo-boehmite produced by Sinopec Catalyst Co., Ltd. Changling Branch, a...

Embodiment B

[0137] A vacuum residue is used as a raw material for solvent deasphalting, and the solvent used is a hydrocarbon mixture with a butane content of more than 75% by weight. At 120°C, solvent: vacuum residue = 2:1 (mass ratio) Solvent deasphalting is carried out under the conditions, the mass yield of DAO is 68%, and the mass yield of DOA is 32%.

[0138] The properties of the obtained 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 processing heavy raw oil and aromatic-rich distillate oil, and the method comprises the following steps: (11) introducing the heavy raw oil into a solvent deasphalting unit for solvent deasphalting treatment; (12) introducing the deasphalted oil into a first hydrogenation unit for hydrogenation reaction, and introducing the obtained liquid phase effluent into a DCC unit for reaction; (2) introducing the aromatic-rich distillate oil into a second hydrogenation unit, performing hydrogenation saturation, and then performing fractionation; (3) introducing the deoiled asphalt and the aromatic hydrocarbon-containing material flow into a third reaction unit for hydrogenation reaction; (4) fractionating a liquid-phase product of the third reaction unit; (51) introducing the second light component into a fourth reaction unit for reaction; and (52) introducing the second heavy component into a delayed coking unit for reaction, or using the second heavy component as a low-sulfur marine fuel oil component. The treatment process provided by the 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 heavy feedstock oil and aromatic-rich distillate oil and a system for processing heavy feedstock oil and aromatic-rich distillate oil. Background technique [0002] Efficient conversion of residual oil is the core of refinery enterprises. Fixed-bed residual oil hydrogenation is a key technology for efficient conversion of residual 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 a restrictive factor for the operation period of the fixed bed residual oil hydrogenation unit. [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 ...

Claims

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Application Information

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IPC IPC(8): C10G69/00
CPCC10G69/00C10G2400/02C10G2400/04C10G2400/30C10G2300/1077C10G2300/107C10G2300/202C10G2300/205
Inventor 杨清河贾燕子聂红胡大为牛传峰孙淑玲戴立顺王振户安鹏任亮
Owner CHINA PETROLEUM & CHEM CORP
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