Method for producing fuel oil and lubricant base oil by hydrogenating all fractions of coal tar

A technology of lubricating oil base oil and coal tar, which is applied in the field of coal chemical industry, can solve the problems that the production economic benefits are difficult to further improve, and there is no further rational use, and achieve the effects of improving production economic benefits, easy control, and simple process flow

Active Publication Date: 2013-06-12
SHENMUFUYOU ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual production process, about 8% of coal tar hydrogenation tail oil will be produced by-product, which is usually exported at a low price without further rational use, making it difficult to further improve the economic benefits of production

Method used

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  • Method for producing fuel oil and lubricant base oil by hydrogenating all fractions of coal tar
  • Method for producing fuel oil and lubricant base oil by hydrogenating all fractions of coal tar
  • Method for producing fuel oil and lubricant base oil by hydrogenating all fractions of coal tar

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Now take the full fraction low-temperature coal tar 1 as an example, see figure 1 , the method for hydrogenation of fuel oil and lubricating base oil consists of the following steps:

[0018] (1) Dehydration and deslagging post-treatment of the whole fraction of low-temperature coal tar 1 according to conventional methods;

[0019] (2) The low-temperature coal tar 1 after dehydration and deslagging is mixed with hydrogen 2 and sent to the first hydrogenation reactor 3, which is filled with TK-10 hydrogenation protection agent (Topsoe company), RN -5030 Hydrodemetallization Agent (Criterion Company), the inlet temperature of TK-10 Hydrodemetallization Agent is 230°C, the reaction temperature of RN-5030 Hydrodemetallization Agent is 240°C, the pressure is 12MPa, and the liquid space velocity is 0.3 h -1 , the volume ratio of oil to hydrogen is 1:1500, after the reaction is completed, it is sent to the second hydrogenation reactor 4, and the second hydrogenation reactor ...

Embodiment 2

[0023] Now taking full-fraction low-temperature coal tar 1 as an example, the method for hydrogenating fuel oil and lubricating base oil consists of the following steps:

[0024] (1) Dehydration and deslagging post-treatment of the whole fraction of low-temperature coal tar 1 according to conventional methods;

[0025] (2) The low-temperature coal tar 1 after dehydration and deslagging is mixed with hydrogen gas 2 and sent to the first hydrogenation reactor 3. The first hydrogenation reactor 3 is filled with a hydrogenation protecting agent and a hydrodemetallization agent for hydrogenation The inlet temperature of the protective agent is 230°C, the reaction temperature of the hydrodemetallization agent is 250°C, the pressure is 14MPa, and the liquid space velocity is 0.2h -1 , the volume ratio of oil to hydrogen is 1:1500, after the reaction is completed, it is sent to the second hydrogenation reactor 4, and the second hydrogenation reactor 4 is equipped with a hydrodesulfuri...

Embodiment 3

[0029] Now taking full-fraction low-temperature coal tar 1 as an example, the method for hydrogenating fuel oil and lubricating base oil consists of the following steps:

[0030] (1) Dehydration and deslagging post-treatment of the whole fraction of low-temperature coal tar 1 according to conventional methods;

[0031](2) The low-temperature coal tar 1 after dehydration and deslagging is mixed with hydrogen gas 2 and sent to the first hydrogenation reactor 3. The first hydrogenation reactor 3 is filled with a hydrogenation protecting agent and a hydrodemetallization agent for hydrogenation The inlet temperature of the protective agent is 240°C, the reaction temperature of the hydrodemetallization agent is 260°C, the pressure is 16MPa, and the liquid space velocity is 0.5h -1 , the volume ratio of oil to hydrogen is 1:1800, after the reaction is completed, it is sent to the second hydrogenation reactor 4, and the second hydrogenation reactor 4 is equipped with a hydrodesulfuriz...

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Abstract

The invention relates to a method for producing fuel oil and lubricant base oil by hydrogenating all fractions of coal tar. The method comprises the following steps of: performing pressure reduction on the all fractions of coal tar by virtue of a pressure reduction valve after hydroprocessing on the all fractions of coal tar is finished, and flashing to separate out a light product and a heavy product; performing isodewaxing on the heavy product; and fractioning the heavy product, successively together with the light product, through a heat high fraction separator, a cold high fraction separator, a cold low fraction separator and a fraction tower to obtain the fuel oil and the lubricant base oil which are good in quality and meet a state standard request. The method is simple in process procedures, easy to control, and safe and stable in operation; and the all fractions of coal tar can be scientifically and reasonably utilized, the production economic benefit is further improved, and a certain active function in overcoming the defect of the fuel oil and the lubricant base oil in China is achieved.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and in particular relates to a method for producing fuel oil and lubricating oil base oil through hydrogenation of full fraction coal tar. Background technique [0002] In recent years, the rapid development of my country's coal tar hydrogenation to fuel oil industry has certain significance for alleviating my country's oil shortage. [0003] The coal tar hydrogenation technology that has been industrially produced in my country currently mainly includes: the hydrogenation process of light distillate oil (<370°C) of coal tar, the combined process of delayed coking hydrogenation of coal tar, and the hydrogenation process of full fraction coal tar (Zhang Xiaojing. Zhong Hydrogenation technology of low-temperature coal tar, Journal of Coal Science, 2011, No. 5, 840-844). However, in the actual production process, about 8% of coal tar hydrogenation tail oil will be produced by-product, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/00
Inventor 王树宽杨占彪
Owner SHENMUFUYOU ENERGY TECH
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