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Method for preparing raw material for coal liquefaction

A technology for coal liquefaction and raw materials, applied in the field of coal chemical industry, can solve the problems of water waste, poor mixing effect of catalyst and pulverized coal, etc., and achieve the effects of saving usage, improving conversion rate, liquefied oil yield, and uniform distribution

Active Publication Date: 2021-02-23
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 purpose of the present invention is to provide a method for preparing raw materials for coal liquefaction, so as to solve the problems in the prior art that the mixing effect of catalyst and pulverized coal is poor and water is wasted more

Method used

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  • Method for preparing raw material for coal liquefaction
  • Method for preparing raw material for coal liquefaction
  • Method for preparing raw material for coal liquefaction

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Preparation of hydrated iron oxide slurry by precipitation-air oxidation method: add ammonia water to ferrous sulfate solution, pre-precipitate ferrous iron, and then pass through compressed air to oxidize to obtain hydrated iron oxide slurry, hydrated iron oxide slurry Fe concentration 10wt%.

[0040] The raw coal used is clean coal, which is transported into the crusher and crushed to less than 3mm. The crushed clean coal enters the distributor 5 through the scraper conveyor and the scraper elevator, and the conveying speed is 100kg / h; distribution device 5 employs as Figure 2a In the circular distribution plate shown in , the coal is dispersed on the distribution plate and falls through the perforations into the cylinder of the impregnated absorber.

[0041] The hydrated iron oxide slurry is transported to the spray gun nozzle in the impregnated absorber for atomization by a metering pump, and the feed rate of the hydrated iron oxide slurry is 10kg / h. use Figure...

Embodiment 2

[0044] Only change the size of the coal broken by the crusher to be less than 5mm, other conditions are the same as in Example 1, and the obtained product number is 2#.

Embodiment 3

[0046] Only change the size of the coal broken by the crusher to be less than 10mm, and other conditions are the same as in Example 1, and the obtained product number is 3#.

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Abstract

The present invention provides a method for preparing raw materials for coal liquefaction, the method comprising: transporting coal powder to a distributor, so that the coal powder is dispersed by the distributor and then falls into a cylindrical immersion absorber connected with the distributor; The catalyst is transported to the nozzle inside the impregnated absorber for atomization to spray on the surface of the pulverized coal falling from the distributor and absorbed by the pulverized coal; the pulverized coal mixed with the catalyst is transported from the impregnated absorber to the dryer for drying and Grinding to prepare coal liquefaction raw materials with a certain particle size and water content. The method integrates the catalyst preparation into the raw coal powder preparation process, so that direct coal liquefaction does not require a separate catalyst preparation device, greatly saving device investment costs, and can greatly reduce production water consumption and energy consumption; at the same time , the catalytically active components are evenly dispersed on all coal liquefaction feed coal powder, which can greatly improve the conversion rate of coal and the yield of coal liquefaction oil.

Description

technical field [0001] The invention relates to the field of coal chemical industry, in particular to a method for preparing raw materials for coal liquefaction, and more specifically to a method for integrally preparing raw materials for coal liquefaction directly through a liquefaction catalyst and raw coal. Background technique [0002] my country is relatively rich in coal resources, relatively short in oil and natural gas resources, and highly dependent on foreign oil, which seriously threatens my country's energy security. Coal direct liquefaction is a clean coal technology that converts coal into liquid products with the help of hydrogen-donating solvents and catalysts under high temperature and high pressure conditions. The main products of this process are high-quality gasoline, jet fuel oil, diesel oil, aromatics and carbon chemical raw materials, and by-products such as fuel gas, liquefied petroleum gas, sulfur and ammonia, etc. The thermal efficiency of the proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/08
CPCC10G1/08
Inventor 王洪学舒歌平谢晶章序文杨葛灵
Owner CHNA ENERGY INVESTMENT CORP LTD