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Heavy oil processing method and system

A heavy oil and heavy oil cracking technology, applied in the petroleum industry, hydrotreating process, chemical instruments and methods, etc., can solve the problems of high investment and operating costs, high operating pressure, low coke utilization efficiency and benefits, etc., and achieve economic benefits. Better, less expensive results

Pending Publication Date: 2021-03-16
北京石油化工工程研究院
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Problems solved by technology

[0002] Typical technologies for heavy oil processing are divided into two types: decarburization and hydrogenation. The representative technologies of the first type of decarburization process are delayed coking and flexible coking. Due to the non-hydrogenation process, the coke generation rate of this type of technology is relatively high, and the coke utilization In particular, there are difficulties in high-sulfur petroleum coke. Flexible coking adopts the air gasification mode to produce low calorific value gas, which is mainly used for power generation, but the efficiency and benefit of coke utilization are not high; the representative technology of the second type of hydrogenation process is fixed bed residual oil processing Hydrogen, ebullating bed hydrocracking, suspended bed hydrocracking, etc. These technologies significantly reduce the coke yield, but due to high operating pressure, investment and operating costs are high

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  • Heavy oil processing method and system
  • Heavy oil processing method and system
  • Heavy oil processing method and system

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Embodiment 1

[0087] like figure 1 The heavy oil processing system shown includes:

[0088] Heavy oil cracking and gasification unit 201, pyrolysis oil hydrocracking unit 202, aromatics complex unit 203, methanol synthesis unit 204, ethanol synthesis unit 205, hydrogen production unit 206 including at least pressure swing adsorption equipment, sulfur recovery unit 207;

[0089] The heavy oil cracking and gasification device 201 includes a heavy oil inlet 211, a cracked gas outlet 212, and a cracked oil outlet 213;

[0090] The pyrolysis oil hydrocracking unit 202 includes a cracking oil hydrocracking unit raw material inlet 221, a cracking oil hydrocracking unit hydrogen inlet 222, a light naphtha outlet 223, a heavy naphtha outlet 224, a diesel outlet 225, and a pyrolysis oil hydrocracking unit. Device impurity outlet 226,

[0091] The aromatics complex 203 includes an aromatics complex raw material inlet 231 , an aromatics complex hydrogen outlet 232 , a by-product outlet 233 , a benze...

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Abstract

The invention provides a heavy oil processing method and system. The method at least comprises the following steps: (1) heavy oil cracking and gasification: heavy oil is subjected to heavy oil cracking and gasification, and at least cracking gas, synthesis gas and cracking oil are obtained; (2) cracking oil hydrocracking: carrying out hydrocracking on the cracking oil obtained in the step (1) to obtain a product containing dry gas, low-fraction gas, light naphtha, heavy naphtha and diesel oil; (3) aromatic hydrocarbon combination: by taking the heavy naphtha obtained in the step (2) as a raw material, performing aromatic hydrocarbon combination to obtain a product containing hydrogen, benzene and p-xylene and byproducts containing liquefied petroleum gas, pentane, raffinate oil and heavy aromatic hydrocarbon; (4) methanol synthesis: taking part of pyrolysis gas and synthesis gas obtained in the step (1) as raw materials, and performing methanol synthesis to obtain a methanol product; and (5) ethanol synthesis: taking the residual pyrolysis gas and synthesis gas obtained in the step (1) as raw materials, and carrying out ethanol synthesis to obtain an ethanol product.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular, the invention relates to a heavy oil processing method and system. Background technique [0002] Typical technologies for heavy oil processing are divided into two types: decarburization and hydrogenation. The representative technologies of the first type of decarburization process are delayed coking and flexible coking. Due to the non-hydrogenation process, the coke generation rate of this type of technology is relatively high, and the coke utilization In particular, there are difficulties in high-sulfur petroleum coke. Flexible coking adopts the air gasification mode to produce low calorific value gas, which is mainly used for power generation, but the efficiency and benefit of coke utilization are not high; the representative technology of the second type of hydrogenation process is fixed bed residual oil processing Hydrogen, ebullating bed hydrocracking, suspended bed hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/06C07C31/04C07C31/08C07C29/17C07C29/151C01B3/24C01B3/38C01B3/56
CPCC10G69/06C07C29/172C07C29/151C01B3/24C01B3/38C01B3/56C01B2203/0227C01B2203/0266C01B2203/061C01B2203/062C01B2203/06C01B2203/1252C07C31/04C07C31/08
Inventor 刘纯权
Owner 北京石油化工工程研究院
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