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Method for preparing catalyst-loaded coal liquefied oil coal slurry

A technology for supporting catalysts and coal liquefied oil, which is applied in the petroleum industry, liquid carbon-containing fuels, fuels, etc., can solve the problems of poor dispersibility of catalysts, difficult to grow up, and large particle size of catalysts, so as to achieve small particles and difficult to grow up. , good dispersion effect

Active Publication Date: 2021-03-16
CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a catalyst-loaded coal liquefied oil-coal slurry preparation method in order to overcome the problems of poor catalyst dispersion and too large catalyst particle size in the prior art, which can make the catalyst dispersed in the oil-coal slurry The catalyst is further adsorbed on the surface of the coal powder and the pore wall during the swelling process of the coal powder, and the dispersion is more uniform; and this method adopts the integration of emulsification, impregnation, precipitation, swelling, adsorption and dehydration of the whole coal powder material to prepare qualified oil-coal slurry, and the catalyst is in the reaction process. It is easier to maintain its nano-scale particle size and not easy to grow

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  • Method for preparing catalyst-loaded coal liquefied oil coal slurry
  • Method for preparing catalyst-loaded coal liquefied oil coal slurry
  • Method for preparing catalyst-loaded coal liquefied oil coal slurry

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preparation example Construction

[0029] In order to achieve the above object, the present invention provides a catalyst-loaded coal liquefied oil coal slurry preparation method, the method comprising the following steps:

[0030] (1) emulsifying the iron salt aqueous solution with the first solvent oil to obtain an iron salt homogeneous emulsion; emulsifying the alkaline aqueous solution with the second solvent oil to obtain an alkaline homogeneous emulsion;

[0031] (2) After homogeneously mixing iron salt homogeneous emulsion and oil-coal slurry, add alkaline homogeneous emulsion;

[0032] (3) The alkaline substance in the alkaline homogeneous emulsion and the iron salt in the iron salt homogeneous emulsion undergo a precipitation reaction to obtain iron hydroxide, and then pass through an oxidant to undergo an oxidation reaction to generate nano-scale iron-based Catalyst particles;

[0033] (4) After the oxidation reaction finishes, feed nitrogen, add sulfur, keep the slight positive pressure of the nitro...

Embodiment 1

[0063] Ferrous sulfate aqueous solution and the first solvent oil (anthracene oil and washing oil hydrogenated oil three times) are emulsified in the iron salt emulsification homogenization tank 1, and the emulsification temperature is 50 ° C; ammonia water and the second solvent oil (anthracene oil and washing oil three times hydrogenated oil) in the alkaline solution emulsification homogeneous tank 2 for emulsification, and the emulsification temperature is 50°C; the ferrous sulfate homogeneous emulsion is introduced into the oil-coal slurry preparation tank 3, and prepared with the oil-coal slurry The oil-coal slurry in the tank 3 was homogeneously mixed for 30 minutes; the ammonia water homogeneous emulsion was introduced into the oil-coal slurry preparation tank 3, and the ammonia water in the ammonia water homogeneous emulsion and the ferrous sulfate in the ferrous sulfate homogeneous emulsion produced Precipitation reaction, the pH value is 7, and the reaction time is 30...

Embodiment 2

[0065] The ferrous nitrate aqueous solution and the first solvent oil (anthracene oil and washing oil three times hydrogenated oil) are emulsified in the iron salt emulsification homogenization tank 1, and the emulsification temperature is 20 ° C; ammonia water and the second solvent oil (anthracene oil and washing oil three times hydrogenated oil) in the alkaline solution emulsification homogeneous tank 2 for emulsification, and the emulsification temperature is 20°C; the ferrous nitrate homogeneous emulsion is introduced into the oil-coal slurry preparation tank 3, and prepared with the oil-coal slurry The oil-coal slurry in the tank 3 was homogeneously mixed for 50 minutes; the ammonia water homogeneous emulsion was introduced into the oil-coal slurry preparation tank 3, and the ammonia water in the ammonia water homogeneous emulsion and the ferrous nitrate in the ferrous nitrate homogeneous emulsion produced Precipitation reaction, the pH value is 8.5, and the reaction time...

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Abstract

The invention relates to the field of direct coal liquefaction, and discloses a method for preparing coal-liquefied coal-oil slurry loaded with a catalyst. The method includes the following steps: emulsifying a ferric salt aqueous solution and first solvent oil to obtain a ferric salt homogenized emulsion; emulsifying an alkaline aqueous solution and second solvent oil to obtain an alkaline homogenized emulsion; after homogeneously mixing the ferric salt homogenized emulsion with the coal-oil slurry, adding the alkaline homogenized emulsion; subjecting alkaline substances in the alkaline homogenized emulsion and ferric salt in the ferric salt homogenized emulsion to a precipitation reaction, injecting an oxidizing agent, and carrying out an oxidation reaction to generate nano-scale iron-based catalyst fine particles; after the oxidation reaction, injecting nitrogen, adding sulfur, maintaining micro-positive pressure of the nitrogen atmosphere, and purifying a gas phase; injecting steam to heat the coal-oil slurry, swelling coal powder, and dehydrating a coal-oil slurry emulsion. The method has the advantages that the catalyst is uniformly dispersed on the surface and pore wall of the coal powder, and is kept at the nano scale to prevent proneness to expansion.

Description

technical field [0001] The invention relates to the technical field of direct coal liquefaction, in particular to a method for preparing catalyst-loaded coal liquefaction oil coal slurry. Background technique [0002] Coal liquefaction technology is a process in which coal is hydrogenated and cracked to produce liquid products under a certain temperature, pressure and presence of a catalyst. After more than 100 years of research and development, along with the solutions to problems such as coal slurry transportation, reactor coking, equipment blockage, and equipment wear, as well as advanced technology and reactor research, great progress has been made, and the development of high-efficiency coal liquefaction catalysts has also achieved unprecedented progress. The development of coal liquefaction provides a practical way to improve the efficiency of coal liquefaction and energy utilization, realize the commercial value of direct coal liquefaction and maintain competitiveness...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/32
CPCC10L1/322C10L2230/04
Inventor 王洪学舒歌平谢晶杨葛灵章序文李导吴剑平
Owner CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD