Recycle device and recycle method for solvent in coal liquefaction residue raffinate

A coal liquefaction residue and recovery device technology, which is applied in the field of coal chemical industry, can solve the problems of difficult long-term, efficient and stable operation of the recovery system, and achieve superior economic and ecological benefits, reduced impact, and low energy consumption.

Active Publication Date: 2019-07-23
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a solvent recovery device and recovery method in the coal liquefaction residue raffinate, so as to solve the problem that the solvent recovery system in the coal liquefaction residue raffinate is difficult to run efficiently and stably for a long period of time in the prior art

Method used

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  • Recycle device and recycle method for solvent in coal liquefaction residue raffinate
  • Recycle device and recycle method for solvent in coal liquefaction residue raffinate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] specific use figure 1 The shown setup performs solvent recovery:

[0060]Add the coal liquefaction residue raffinate to the coal liquefaction residue raffinate supply device, raise the temperature to 140°C and stir for 6 hours, and add the extraction solvent to the raffinate and extraction solvent mixing device at a mass ratio of 1:0.3, raise the temperature to 160°C and After stirring for 6 hours, a mixed solution suitable for stable transportation was obtained. Through the delivery pump, control valve and flow meter, the qualified mixed liquid is fed into the drum dryer from the bottom of the mixing tank for drying. The vacuum degree of the dryer is 10KPa, the rotating speed of the heating drum is 4r / min, and the temperature of the drum is 300°C. The temperature is 280°C. After the solid phase material passes through the scraper and the solid phase material discharge bin, it is finally discharged into the dry solid slag bin through the rotary discharge valve and the...

Embodiment 2

[0062] specific use figure 1 The shown setup performs solvent recovery:

[0063] Add the coal liquefaction residue raffinate to the coal liquefaction residue raffinate supply device, raise the temperature to 140°C and stir for 6 hours, and add the extraction solvent to the raffinate and extraction solvent mixing device at a mass ratio of 1:0.3, raise the temperature to 160°C and After stirring for 6 hours, a mixed solution suitable for stable transportation was obtained. Through the delivery pump, control valve and flow meter, the qualified mixed liquid is fed into the drum dryer from the bottom of the mixing tank for drying. The vacuum degree of the dryer is 5KPa, the rotating speed of the heating drum is 4r / min, and the temperature of the drum is 350°C. The temperature is 280°C. After the solid phase material passes through the scraper and the solid phase material discharge bin, it is finally discharged into the dry solid slag bin through the rotary discharge valve and the...

Embodiment 3

[0065] specific use figure 1 The shown setup performs solvent recovery:

[0066] Add the coal liquefaction residue raffinate to the coal liquefaction residue raffinate supply device, raise the temperature to 140°C and stir for 6 hours, and add the extraction solvent to the raffinate and extraction solvent mixing device at a mass ratio of 1:0.3, raise the temperature to 160°C and After stirring for 6 hours, a mixed solution suitable for stable transportation was obtained. Through the delivery pump, control valve and flow meter, the qualified mixed liquid is fed into the drum dryer from the bottom of the mixing tank for drying. The vacuum degree of the dryer is 5KPa, the rotating speed of the heating drum is 4r / min, and the temperature of the drum is 350°C. The temperature is 200°C. After the solid phase material passes through the scraper and the solid phase material discharge bin, it is finally discharged into the dry solid slag bin through the rotary discharge valve and the...

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Abstract

The invention provides a recycle device and a recycle method for a solvent in coal liquefaction residue raffinate. The device comprises a raw material supply unit, a roller drying unit, a residue-fixing material-discharging unit and a gas-liquid separation unit, wherein the raw material supply unit is used for preparing the mixture of the coal liquefaction residue raffinate and an extracting solvent; the roller drying unit comprises a vacuum roller scraper blade drying machine, and is connected with the raw material supply unit, used for carrying out vacuum roller scraper blade drying on the mixture and further provided with a gas phase outlet and a solid phase outlet; the residue-fixing material-discharging unit is connected with the solid phase outlet of the roller drying unit; and the gas-liquid separation unit is provided with a gas phase inlet and used for carrying out condensing on gas discharged from the gas phase outlet and gas-liquid separation. The device provided by the invention is utilized to recycle the solvent in the coal liquefaction residue raffinate, a recycle system can operate efficiently and stably for a long period, and has the advantages of high heat transferefficiency, high treatment efficiency and the like.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to a recovery device and recovery method for solvent in coal liquefaction residue raffinate. Background technique [0002] my country is "rich in coal, short of oil, and low in gas". Making full use of abundant coal resources and developing coal liquefaction technology is one of the important ways to reduce excessive dependence on foreign crude oil, alleviate the shortage of oil resources in our country, and the tight supply and demand of petroleum products. It is an important measure to improve the utilization rate of my country's coal resources, reduce coal-burning pollution, and promote the coordinated development of energy, economy, and environment. Coal liquefaction residue raffinate is the centrifuged heavy phase obtained after extraction and centrifugation of coal liquefaction by-product residue, which contains 35-40% of extraction solvent, 5-10% of bituminous substances,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G21/28
CPCC10G21/28
Inventor 辛凡文王国栋向柠李克健舒歌平王洪学高山松杨葛灵程时富常鸿雁
Owner CHNA ENERGY INVESTMENT CORP LTD
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