Production device and preparation method of hydrogen-donor solvent

A hydrogen supply solvent and hydrogen supply technology, applied in the field of coal chemical industry, can solve the problems of affecting coal conversion rate and oil yield, poor hydrogen supply capacity, weak hydrogen supply capacity, etc.

Active Publication Date: 2019-07-12
胜帮科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the coal liquefied oil produced by direct coal liquefaction contains some saturated hydrocarbons, the content of saturated hydrocarbons is further increased after hydrotreating, accounting for about 30% of the circulating hydrogen supply solvent. Has a very weak hydrogen supply capacity, which affects the conversion rate of coal and oil yield
[0005] The circulating hydrogen-supply solvent prepared by the existing technology contains relatively high content of saturated hydrocarbons, which leads to the poor hydrogen-supply capacity of the obtained circulated hydrogen-supply solvent. Therefore, it is necessary to provide a hydrogen-supply solvent with strong hydrogen-supply capacity and Its production device and method are of great significance to the coal liquefaction process

Method used

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  • Production device and preparation method of hydrogen-donor solvent
  • Production device and preparation method of hydrogen-donor solvent
  • Production device and preparation method of hydrogen-donor solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This embodiment provides a device for producing a hydrogen-donating solvent, and the schematic diagram of the device is as follows figure 1 As shown, it includes a hydrogen supply unit, a raw oil supply unit, a hydrogenation reaction unit, a separation unit and a stripper 8 .

[0062] The raw oil supply unit includes a raw oil storage tank 1, a raw oil delivery pump 3, and a heat exchanger 4 connected in sequence;

[0063] The hydrogen supply unit includes a hydrogen heating furnace 2, the outlet of the hydrogen heating furnace 2 is connected to the inlet of the hydrogenation reaction unit, and the connecting pipeline between the hydrogen heating furnace 2 and the inlet of the hydrogenation reaction unit is also connected to the heat exchange unit. The outlet of device 4 is connected;

[0064] The separation unit includes a hot high-pressure separator 6 and a hot low-pressure separator 7. The hot high-pressure separator 6 is provided with a top gas outlet and a first b...

Embodiment 2

[0068] This embodiment provides a device for producing a hydrogen-donating solvent, and the schematic diagram of the device is as follows figure 2 As shown, except that the top of the stripper 8 is also provided with a stripper reflux tank 9, all the others are the same as in Embodiment 1.

[0069] The raw oil in the raw oil storage tank 1 flows through the heat exchanger 4 under the action of the raw oil delivery pump 3, and after being heated, it mixes with the hydrogen gas flowing out of the hydrogen heating furnace 2, and enters the fixed bed reactor 5 together for reaction. After the end, the high-temperature mixture flows through the heat exchanger 4 to heat the raw material oil, and the cooled high-temperature mixture is separated into gas and liquid in the hot high-pressure separator 6, the gas is discharged from the top gas outlet, and the hydrogenated bottom oil is discharged from the first bottom The port flows into the hot low-pressure separator 7, and is fraction...

Embodiment 3

[0072] This embodiment provides a device for producing a hydrogen-donating solvent, and the schematic diagram of the device is as follows image 3 As shown, compared with Example 2, the device provided in Example 3 is also provided with a hydrogen recovery unit, which includes an air cooler 10, a gas-liquid separator 11 and a compressor 12 connected in sequence, and the air cooling The inlet of the device 10 is connected to the top gas outlet of the hot high-pressure separator 6, the gas outlet of the compressor 12 is connected to the inlet of the hydrogen heating furnace 2, and the water phase outlet of the gas-liquid separator 11 is connected to the gas outlet of the gas-liquid separator 11. The water phase outlet of the stripper reflux tank 9 is connected, and the light oil phase outlet is connected with the light oil phase outlet of the stripper reflux tank 9 .

[0073] The raw oil in the raw oil storage tank 1 flows through the heat exchanger 4 under the action of the raw...

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Abstract

The present application relates to a production device and preparation method of a hydrogen-donor solvent. The production device comprises a hydrogen supply unit, a raw material oil supply unit, a hydrogenation reaction unit, a separation unit and a stripping column; the preparation method comprises the following steps: after raw material oil is heated, mixing the heated oil and hydrogen, performing a hydrogenation reaction, and performing gas-liquid separation to obtain hydrogenated base oil; performing fractional distillation on the hydrogenated base oil, adding light components of the baseoil from the upper part of the stripping column, and adding heavy components of the base oil from the middle of the stripping column; and performing stripping on the light components of the base oil and the heavy components of the base oil to obtain the hydrogen-donor solvent at the bottom of the stripping column. The hydrogen-donor solvent provided by the invention has a hydrogen supply index of20.82, and strong hydrogen supply capacity; the preparation method of the hydrogen-donor solvent has a simple process, and prevents supersaturation of the hydrogen-donor solvent by controlling operation parameters such as a hydrogen-oil ratio, reaction temperature, reaction pressure and a space velocity; and the yield of the hydrogen-donor solvent is as high as 88.64%.

Description

technical field [0001] The invention belongs to the field of coal chemical industry and relates to a hydrogen-donating solvent, in particular to a production device and a preparation method of a hydrogen-donating solvent. Background technique [0002] The hydrogen-donating solvent process is a liquefaction process in which coal is directly reacted with a pre-hydrogenated hydrogen-donating solvent. The function of the hydrogen-donating solvent is to disperse the coal in the coal slurry, fluidize the coal through the reaction system, and provide active hydrogen The hydrogenation reaction is carried out on coal, and the hydrogen-donating solvent can dissolve the coal and prevent the condensation of free radical fragments generated by coal pyrolysis, thereby increasing the yield of coal liquefied oil; Catalyst surface diffusion; hydrogen-donating solvents can also directly donate or transfer hydrogen to free radical fragments. [0003] The hydrogen-donating solvent with high hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/14
CPCC10G67/14
Inventor 贺霞王庆元曹黎徐敏
Owner 胜帮科技股份有限公司
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