Multi-grade liquefying technology of coal and biomass

A biomass and process technology, applied in the field of coal and biomass co-refining process, can solve the problems of not realizing coal, biomass and oil mixing production technology, limited coal powder content, and low liquefaction efficiency.

Active Publication Date: 2018-07-17
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The technical problem to be solved by the present invention is to overcome the problem of low liquefaction efficiency caused by the limited coal powder content of coal slurry in the prior art, and further overcome the lack of

Method used

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  • Multi-grade liquefying technology of coal and biomass

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] A multi-stage liquefaction process of coal and biomass, comprising the following steps:

[0088] (1) Take lignite, dry and dehydrate it, pulverize to a median particle size of 50 μm, and then send it to a briquetting machine for extrusion molding at a molding pressure of 5 MPa to obtain 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 liquid manure and waste oil to form a biomass kerosene slurry, and hydrogen gas is passed into the biomass kerosene slurry to generate One-stage hydrogenation reaction to obtain one-stage hydrogenation product.

[0089] (2) Then add the amorphous alumina loaded with Mo oxide and Ni oxide sulfurized in the reactor to the primary hydrogenation product and feed hy...

Embodiment 2

[0091] A multi-stage liquefaction process of coal and biomass, comprising the following steps:

[0092] Straw pretreatment:

[0093] Take wheat stalks and corn stalks, dry and dehydrate them, crush them to a median particle size of 100 μm, and then send them to a layering machine for extrusion molding at a molding pressure of 2 MPa to obtain straw compressed materials;

[0094] Send the straw compressed material into a hammer mill for crushing to obtain a straw crushed material with a median particle size of 30 μm, which is ready for use.

[0095] Pretreatment of coal raw materials:

[0096] Take lignite, dry and dehydrate it, pulverize until the median particle size is 100 μm, and then send it into a briquetting machine for extrusion molding, and the molding pressure is 15MPa to obtain lignite compressed material;

[0097] Send the compressed lignite material into a ball mill for pulverization to obtain a pulverized lignite material with a median particle size of 50 μm, ...

Embodiment 3

[0111] A multi-stage liquefaction process of coal and biomass, comprising the following steps:

[0112] Pretreatment of biomass raw materials:

[0113] (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 300 μm.

[0114] (2) Send the reed primary pulverized material into a briquetting machine or a plodder for extrusion molding with a molding pressure of 5 MPa to obtain a reed compressed material.

[0115] (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 50 μm, ready for use.

[0116] Pretreatment of coal raw materials:

[0117] (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.

[0118]...

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Abstract

The invention relates to the technical field of clean energy, and specifically provides a multi-grade liquefying technology of coal and biomass. The technology is characterized in that the coal and the biomass raw materials are processed by crushing, compressing and crushing again, then the sizing is prepared, so that biomass diesel oil which is high in solid content and can be stably conveyed through a pump can be obtained; high-viscosity waste oil which cannot be used as a coal and biomass liquefying solvent in the prior art can be utilized. According to the technology, coal and biomass canbe liquefied under high pressure and high temperature in the existence of proper volume of water; the liquefying product is sequentially subjected to primary cracking, hydrogenation reaction and deepcracking and hydrogenation reaction under the effects of resisting hydrogen and a first catalyst and a second catalyst, so that the coal and the biomass can be converted into biomass oil, and the biomass oil can be refined; the conversion rate of the biomass and the coal is up to 95-99%; the yield of the biomass oil is up to 70-80%; and moreover, the residue content is less than 2.5%.

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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IPC IPC(8): C10G1/06C10G1/00
CPCC10G1/002C10G1/06Y02E50/10
Inventor 林科李林郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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