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A hydrogen-donating solvent and a method for preparing fuel oil using a hydrogen-donating solvent

A technology for supplying hydrogen solvent and fuel oil, applied in the field of coal chemical industry, can solve the problems of high investment cost and increased product cost, and achieve the effects of simple equipment and operation steps, cost reduction, and hydrogen consumption reduction.

Active Publication Date: 2017-05-24
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that in the prior art, the coal tar and the hydrogen-donating solvent are pretreated under the critical conditions of the hydrogen-donating solvent to improve the hydrogenation reaction effect of coal tar, and there is equipment investment cost in the hydrogenation process High, resulting in greatly increased product cost after coal tar hydrotreating, and then provide a hydrogen-donating solvent and a fuel oil manufacturing method that uses the hydrogen-donating solvent to improve the effect of coal tar hydrogenation reaction with simple operation and low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Mix 400g of coal tar with a fraction above 350°C and 3600g of hydrogen-donating solvent in an electromagnetically stirred autoclave, and add 2g of Fe as the active component into the autoclave. 2 o 3 Coal tar hydrogenation catalyst, under the conditions of initial hydrogen pressure of 3MPa, reaction pressure of 10MPa, reaction temperature of 400-420°C, and hydrogen-to-oil volume ratio of 2:8, hydrogenation thermal decomposition reaction is carried out to prepare the fuel oil ; Wherein, the hydrogen-donating solvent is a petroleum-based fraction with a boiling point of 200-538°C.

[0028] The fuel oil prepared in this example was tested, and the yield of <350°C fraction was 85.3%, the gas yield was 12.8, and the hydrogen consumption was 1.78.

Embodiment 2

[0030] Mix 400g of the whole fraction of coal tar with 1600g of hydrogen-donating solvent in an electromagnetically stirred autoclave, and add 2.8g of Fe as the active component into the autoclave. 2 o 3 Coal tar hydrogenation catalyst, under the conditions of initial hydrogen pressure of 5MPa, reaction pressure of 12MPa, reaction temperature of 420-440°C, and hydrogen-to-oil volume ratio of 3:7, the fuel oil was prepared by thermal decomposition reaction. ; Wherein, the hydrogen-donating solvent is a petroleum-based distillate whose pressure is 200°C and whose boiling point is 200°C.

[0031]The fuel oil prepared in this example was tested, and the yield of <350°C fraction was 85%, the gas yield was 12.1, and the hydrogen consumption was 1.78.

Embodiment 3

[0033] Mix 400g of the whole fraction of coal tar with 933.3g of hydrogen-donating solvent in an electromagnetically stirred autoclave, and add 4g of Fe as the active component into the autoclave. 2 o 3 Coal tar hydrogenation catalyst, under the conditions of initial hydrogen pressure of 8MPa, reaction pressure of 16MPa, reaction temperature of 440-460°C, and hydrogen-to-oil volume ratio of 4:6, hydrogenation thermal decomposition reaction is carried out to prepare the fuel oil ; Wherein, the hydrogen-donating solvent is a petroleum-based distillate with a pressure of 200-350° C. and a boiling point.

[0034] The fuel oil prepared in this example was tested, and the yield of <350°C fraction was 87.6%, the gas yield was 11.2, and the hydrogen consumption was 1.6.

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Abstract

The invention provides a preparation method of fuel oil. The method comprises the steps of: mixing coal tar with a hydrogen-donor solvent, and in the presence of a hydrogenation catalyst, conducting hydrogenation thermal decomposition to prepare the fuel oil. Specifically, the hydrogen-donor solvent is petroleum fraction with a boiling point of 200-538DEG C, or a mixture of coal fraction with a boiling point of 200-538DEG C and petroleum fraction with a boiling point of 200-538DEG C. According to the method provided by the invention, the equipment and the operation steps are simple during coal tar hydrogenation, and the cost of fuel oil is greatly reduced. For the fuel oil prepared by the preparation method provided by the invention, the yield of fraction lower than 350DEG C is 85-96%.

Description

technical field [0001] The invention relates to a hydrogen-donating solvent and a method for preparing fuel oil using the hydrogen-donating solvent, belonging to the technical field of coal chemical industry. Background technique [0002] Coal tar is a black or dark brown viscous liquid with pungent odor, which is a liquid product produced in the pyrolysis process of coal. According to different pyrolysis temperatures, coal tar can be divided into low-temperature tar (the carbonization temperature is 450~ 550°C), medium temperature tar (carbonization temperature is 600~800°C) and high temperature tar (carbonization temperature is about 1000°C). The relative density of low-temperature coal tar is small, and its composition includes alkanes, olefins and aromatics accounting for about 50%, phenols content up to 30%, and the rest are nitrogen-containing compounds, sulfur-containing compounds and colloidal substances mainly composed of pyridine bases ;High-temperature coal tar i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G49/20
Inventor 任相坤井口宪二坂脇弘二崔永君
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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