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A kind of wax oil hydrogenation treatment method

A processing method and technology for hydrogenation of wax oil, applied in the treatment of hydrocarbon oil, petroleum industry, etc., can solve problems such as the need for circulating hydrogen, and achieve the effects of increasing the hydrogenation reaction rate, reducing the tendency of coke formation, and high catalytic activity

Active Publication Date: 2017-11-21
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to overcome the technical problems of existing wax oil hydrotreating process that need to circulate hydrogen and need to operate at low space velocity, and provide a wax oil hydrotreating method, which is used to hydrogenate wax oil Even if it is carried out at a lower hydrogen-to-oil ratio at a higher space velocity, a better hydrotreating effect can be obtained, and a hydrogenated wax oil that meets the requirements as a raw material for catalytic cracking can be obtained

Method used

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  • A kind of wax oil hydrogenation treatment method
  • A kind of wax oil hydrogenation treatment method
  • A kind of wax oil hydrogenation treatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0067] The wax oil raw material used in this embodiment is a straight-run wax oil whose properties are listed in Table 1.

[0068] This embodiment adopts Figure 5 The process shown hydrotreats a wax oil. Among them, the structure of the gas-liquid mixer is as follows: Figure 4 As shown, the structure of the member used to adjoin the liquid channel and the gas channel in the gas-liquid mixer is a pipe formed by a porous material (commercially purchased from Beijing Zhongtianyuan Environmental Engineering Co., Ltd., with 19 channels evenly distributed on the pipe, each The inner diameter of each channel is 3.3mm, the average pore diameter of the pores on the tube wall is 50nm, the number of pores with a pore diameter in the range of 50-55nm accounts for 98% of the total number of pores, and the porosity of the tube wall is 20%); The channel on the pipe is used as a liquid channel, the space formed by the outer wall of the pipe and the inner wall of the shell is used as a gas...

Embodiment 2

[0084] The wax oil raw material was hydrotreated by the same method as in Example 1, the difference being as follows.

[0085] (1) The wax oil raw material used in this example is coker heavy wax oil, and its properties are listed in Table 4.

[0086] (2) The components in the gas-liquid mixer are as follows image 3 The membrane tube shown (commercially purchased from Beijing Zhongtianyuan Environmental Engineering Co., Ltd.; the average pore diameter of the pores on the substrate is 100 μm; the average pore diameter of the pores on the porous membrane is 500 nm, and the pores on the porous membrane with a pore diameter in the range of 500-550 nm The proportion of the total pores is 95%; the porosity of the porous membrane is 25%); the porous membrane is located on the outer wall of the membrane tube; there are 7 channels evenly distributed, and the inner diameter of each liquid channel is 6mm; The channel is used as a liquid channel, and the space formed by the outer wall o...

Embodiment 3

[0095] The wax oil raw material was hydrotreated by the same method as in Example 1, the difference being as follows.

[0096] (1) The raw material of wax oil used in this example is viscosity-reducing wax oil, and its properties are listed in Table 6.

[0097] (2) The components in the gas-liquid mixer are as follows figure 2 The membrane tube shown (commercially purchased from Beijing Zhongtianyuan Environmental Engineering Co., Ltd.; the average pore diameter of the pores on the substrate is 100 μm; the average pore diameter of the pores on the porous membrane is 250 nm, and the pores on the porous membrane with a pore diameter in the range of 250-260 nm The proportion of the total pores is 95%; the porosity of the porous membrane is 25%); the porous membrane is located on the inner wall of the membrane tube; there are 7 channels evenly distributed, and the inner diameter of each liquid channel is 6mm; The channel is used as a liquid channel, and the space formed by the o...

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Abstract

The present invention provides a wax oil hydrotreating method comprising the following steps: hydrogen gas is sent into a wax oil raw material by pores with the average pore size in nanometer-size to obtain hydrogen-containing wax oil; and the hydrogen-containing wax oil is fed into a tubular reactor for contacting with a hydrogenation catalyst filled in the tubular reactor under conditions of liquid-phase hydrogenation processing. Even hydrogen oil ratio is lower, and space velocity is higher, sulfur and nitrogen in the wax oil can be effectively removed, part of aromatics are saturated, hydrogen-carbon atom ratio of the wax oil can be improved, and a high-quality catalytic cracker raw material can be obtained.

Description

technical field [0001] The invention relates to a method for hydrotreating wax oil. Background technique [0002] In recent years, with the increasing scarcity of oil resources, the trend of heavy and inferior crude oil has become increasingly serious, and with the development of the economy, the demand for light oil products is increasing. Therefore, the largest amount of heavy oil to light, Maximization of benefits has become the goal pursued by oil refineries. [0003] The main means of heavy oil processing are hydrocracking, catalytic cracking and delayed coking. The application of hydrocracking is limited due to large investment, high operating cost, and difficulty in processing coker wax oil and residual oil. The application of delayed coking is also limited due to factors such as low liquid yield and poor product quality. Catalytic cracking has low operating cost, high yield of light oil products, good quality gasoline products, and can process heavy and low-quality...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G49/00
Inventor 李华刘建平佘喜春贺晓军李庆华陈庆岭江磊刘呈立曾志煜杨清贫
Owner CHINA PETROLEUM & CHEM CORP
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