Direct coal liquefaction oil hydrogenation stabilization method

A technology of direct coal liquefied oil and liquefied oil, which is applied in the direction of refining to remove heteroatoms, etc., can solve the problems of high investment cost, high energy consumption in operation, and huge hydrogenation equipment, so as to reduce investment cost and energy consumption in operation, and improve effective Throughput, downscaling effects

Active Publication Date: 2015-09-23
HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problems that the existing hydrogenation stabilization method for direct coal liquefied oil requires a large amount of circulating hydrogen, resulting in a large hydrogenation device, high investment cost and high energy consumption in operation, and

Method used

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  • Direct coal liquefaction oil hydrogenation stabilization method
  • Direct coal liquefaction oil hydrogenation stabilization method
  • Direct coal liquefaction oil hydrogenation stabilization method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0063] Example 1

[0064] The properties of the direct coal liquefied oil used in this example are listed in Table 1. The hydrogenation catalyst used is a HDO-2 catalyst produced by Hunan Changling Petrochemical Technology Company. This embodiment adopts Figure 5 The method shown performs hydrotreating of coal directly to liquefy oil. Among them, the structure of the gas-liquid mixer is as Figure 4 As shown, the structure of the components of the gas-liquid mixer for adjoining the liquid channel and the gas channel is a pipe formed of 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 holes on the pipe wall is 50nm, and the number of holes in the range of 50-55nm accounts for 98% of the total number of holes); the channel on the pipe is used as a liquid channel, and the pipe The space formed by ...

Example Embodiment

[0083] Example 2

[0084] The direct coal liquefied oil was hydrotreated by the same method as in Example 1, with the following differences.

[0085] (1) 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 the pore diameter in the range of 500-550 nm The proportion of the total pores is 95%); 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 on the membrane tube is used as the liquid channel, and the membrane tube The space formed by the outer wall and the inner wall of the casing serves as a gas channel, and the filling rate of the membrane tube in the cas...

Example Embodiment

[0089] Example 3

[0090] The direct coal liquefied oil was hydrotreated by the same method as in Example 1, with the following differences.

[0091] (1) 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 are in the range of 250-260 nm. The proportion of the total pores is 95%); 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 on the membrane tube is used as the liquid channel, and the membrane tube The space formed by the outer wall and the inner wall of the casing serves as a gas channel, and the filling rate of the membrane tube in the casing is 50%.

[009...

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Abstract

The present invention provides a direct coal liquefaction oil hydrogenation stabilization method which is as follows: hydrogen is fed by pores with a nano-sized average pore size into the direct coal liquefaction oil to obtain hydrogen-containing liquefied oil; and the hydrogen-containing liquefied oil is fed into a tubular fixed bed reactor in the upward-flow manner for contacting with a hydrogenation catalyst under liquid-phase hydrogenation conditions. Better hydrotreating results can be obtained, the direct coal liquefaction oil sulfur and nitrogen content and residual carbon content can be effectively reduced, polycyclic aromatic hydrocarbons in the direct coal liquefaction oil are partially hydrogenated, and gelatin and asphaltene content in the direct coal liquefaction oil can be reduced. The method needs no hydrogen cycle, the size of a hydrogenation reactor is reduced, the pressure rating of the gas-liquid separation unit is reduced, and investment costs and operating energy consumption are reduced. In addition, a hydrogenation raw material can carry a sufficient amount of hydrogen without introduction of diluent oil and / or circulating oil into the hydrogenation raw material, and the effective capacity of the hydrogenation reactor can be improved.

Description

technical field [0001] The invention relates to a hydrogenation stabilization method for directly liquefied coal oil. Background technique [0002] In recent years, the international oil market has been changing, and the price has been rising one after another. The issue of energy security has attracted widespread attention from all countries. In order to reduce dependence on oil resources and ensure energy security, countries all over the world are actively developing new fuels. China's national conditions are poor in oil and rich in coal. Therefore, the development of coal-based liquid fuel is an important way to solve the shortage of natural oil in our country. [0003] The liquefied oil produced by the direct coal liquefaction process is called direct coal liquefied oil. Coal direct liquefied oil is a complex mixed system of hydrocarbons. Usually, its aromatic content is as high as 60-80% by weight, olefin content is about 10% by weight, and the content of heteroatoms...

Claims

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Application Information

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IPC IPC(8): C10G45/02
Inventor 李华佘喜春李庆华曾志煜周俐曾文广
Owner HUNAN CHANGLING PETROCHEM SCI & TECH DEV CO LTD
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