Co-hydrolysis hydrogenation process for coal and biomass

A biomass and common technology, applied in the field of co-smelting process of coal and biomass, can solve the problems of no mixing production technology, low liquefaction efficiency, limited coal powder content, etc., and achieve clean and efficient utilization and high fluidity. , the effect of uniform particle size

Active Publication Date: 2018-07-13
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The first technical problem to be solved by the present invention is to overcome the problem of low liquefaction efficiency due to the limited coal powder content of coal slurry in the prior art, and further overcome the failure of coal and biomass pulping in the prior art on this basis The defect of mixing production technology, and then provide a co-hydrolysis hydrogenation process of coal and biomass with less hydrogen consumption and high yield of liquefied oil

Method used

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  • Co-hydrolysis hydrogenation process for coal and biomass

Examples

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Embodiment 1

[0069] A joint hydrolysis and hydrogenation process of coal and biomass, comprising the following steps:

[0070] Lignite was taken, dried and dehydrated, crushed to a median particle size of 100 μm, and then sent to a briquetting machine for extrusion molding at a molding pressure of 15 MPa to obtain a lignite compressed material. The compressed lignite material is sent to a hammer mill for pulverization to obtain a pulverized lignite material with a particle size of 30 μm. The above-mentioned pulverized lignite material and the amorphous ferric oxyhydroxide after sulfidation treatment in the reactor are added to the mixture of feces and water to form a biomass coal-water slurry, and hydrogen gas is passed into the biomass coal-water slurry to generate react, and control the reaction pressure to 16 MPa, the reaction temperature to 420° C., and react for 35 minutes to finally obtain bio-oil.

Embodiment 2

[0072] A joint hydrolysis and hydrogenation process of coal and biomass, comprising the following steps:

[0073] Straw pretreatment:

[0074] (1) Take the straw, dry and dehydrate it, crush it to a median particle size of 100 μm, and then send it to a briquetting machine or a plodder for extrusion molding at a molding pressure of 2 MPa to obtain a compressed straw material.

[0075] (2) Send the compressed straw material into a hammer mill for crushing to obtain crushed straw material with a median particle size of 30 μm, which is ready for use.

[0076] Pretreatment of coal raw materials:

[0077] (1) Take lignite, dry and dehydrate it, pulverize to a median particle size of 100 μm, and then send it to a briquetting machine for extrusion molding at a molding pressure of 5 MPa to obtain lignite compressed material.

[0078] (2) Send the compressed lignite material into a ball mill for pulverization to obtain a pulverized lignite material with a median particle size of 10...

Embodiment 3

[0088] A joint hydrolysis and hydrogenation process of coal and biomass, comprising the following steps:

[0089] Pretreatment of biomass raw materials:

[0090] (1) Get the reed, dry and dehydrate it, and then send it to the jet mill for crushing to obtain the primary crushed material of the reed, with a particle size of D 50 is 200 μm.

[0091](2) Send the reed primary pulverized material into a briquetting machine or a plodder for extrusion molding with a molding pressure of 3 MPa to obtain a reed compressed material.

[0092] (3) The reed compressed material is sent into the jet mill, and secondary pulverization is carried out to obtain the reed secondary pulverization material, particle size D 50 40 μm, set aside.

[0093] Pretreatment of coal raw materials:

[0094] (1) Take Shendong long-flame coal, dry and dehydrate it, and then send it to a ball mill for crushing to obtain primary crushed material of Shendong long-flame coal, particle size D 50 is 80 μm.

[0095...

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Abstract

The invention relates to the technical field of clean energy, in particular to a blending process of coal and biomass. The invention provides a co-hydrolysis hydrogenation process for coal and biomass, the coal and biomass raw materials are subjected to crushing, compression and re-crushing, then the slurry is prepared, and the biomass water coal slurry which is high in solid content and capable of being stably conveyed by a pump is successfully obtained. Hydrogen is introduced into the biomass water coal slurry, the reaction pressure is controlled to be 15-25 MPa, the reaction temperature iscontrolled to be 300-420 DEG C, and finally the biological oil is prepared. The process disclosed by the invention is characterized in that the coal and the biomass are subjected to high-pressure high-temperature hydrolysis under a subcritical or a supercritical state of water, furthermore subjected to cracking and hydrogenation reaction, so that the conversion of the coal and the biomass into thebiological oil is realized. In the process disclosed by the invention, the conversion rate of the coal and the biomass can reach 85-95%, the yield of the biological oil can reach 60-80%, and the residue amount is less than 5%.

Description

technical field [0001] The invention relates to the technical field of clean energy, in particular to a co-smelting process of coal and biomass. Background technique [0002] At present, my country uses coal as the main energy source, and the traditional coal utilization method is combustion, but the problem of air pollution caused by coal combustion has become increasingly serious; moreover, the quality of coal in my country has declined year by year, which has increased the proportion of raw coal washed year after year, and coal washing wastewater has brought severe water pollution. Severe environmental problems have made the adjustment of energy structure one of the important tasks of my country's energy development. However, my country's own energy resource storage is poor in oil and rich in coal, and it already needs to rely on a large amount of oil imports every year to meet the needs of production and development. If the country's energy structure is adjusted by reduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/06C10G1/00
CPCC10G1/002C10G1/065C10G2300/1011
Inventor 林科李林郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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