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Direct liquefaction method for coal and biomass

A biomass and direct technology, applied in the field of coal and biomass co-smelting technology, can solve the problems of low liquefaction efficiency, limited coal powder content, and unrealized mixing production technology, and achieve high fluidity, uniform particle size, Realize the effect of clean and efficient utilization

Active Publication Date: 2018-06-26
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • 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 method of direct liquefaction of coal and biomass with less hydrogen consumption and high yield of liquefied oil

Method used

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  • Direct liquefaction method for coal and biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] The method for direct liquefaction of coal and biomass provided in this embodiment comprises the following steps:

[0086] Pretreatment of biomass raw materials:

[0087] (1) Take wheat stalks, dry and dehydrate them, and then send them to a jet mill for crushing to obtain primary crushed wheat stalks with a particle size of D 50 is 200 μm.

[0088] (2) Sending the primary crushed material of wheat straw into a briquetting machine or a plodder for extrusion molding with a molding pressure of 3 MPa to obtain a compressed material of wheat straw.

[0089] (3) Send the wheat straw compressed material into the jet mill for secondary crushing to obtain the secondary crushed material of wheat straw, particle size D 50 40 μm, set aside.

[0090] Pretreatment of coal raw materials:

[0091] (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 ...

Embodiment 2

[0107] The method for direct liquefaction of coal and biomass provided in this embodiment comprises the following steps:

[0108] Pretreatment of reeds:

[0109] (1) Take the reed, 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 reed material.

[0110] (2) Send the reed compressed material into a hammer mill for crushing to obtain a reed crushed material with a median particle size of 30 μm for use.

[0111] Pretreatment of coal raw materials:

[0112] (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.

[0113] (2) Send the compressed lignite material into a ball mill for pulverization to obtain a pulverized lignite material with a median particle size of 1...

Embodiment 3

[0126] The method for direct liquefaction of coal and biomass provided in this embodiment comprises the following steps:

[0127] Pretreatment of biomass raw materials:

[0128] (1) Get the leaves, dry and dehydrate them, and then send them to the jet mill for crushing to obtain primary crushed leaves with a particle size of D 50 is 300 μm.

[0129] (2) Send the primary pulverized material of the leaves into a briquetting machine or a plodder for extrusion molding with a molding pressure of 3 MPa to obtain compressed leaves.

[0130] (3) The leaf compressed material is sent into the jet mill, and secondary pulverization is carried out to obtain the secondary pulverized material of the leaf, particle diameter D 50 50 μm, ready for use.

[0131] Pretreatment of coal raw materials:

[0132] (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 5...

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Abstract

The invention relates to the technical field of clean energy, and in particular relates to a co-processing process for coal and biomass. According to the process provided by the invention, ''compression + crushing + re-crushing'' treatment is firstly performed on coal and biomass raw materials, so that a biomass coal water slurry which has a high solid content and can be smoothly transported by apump is successfully obtained; the biomass coal water slurry is subjected to a first liquefaction reaction, and a second liquefaction reaction is performed, so that the biomass is fully liquefied intoa liquid phase, and the liquid yield is improved; through two times of gas-liquid separation, an oil product is enriched, and at the same time, residues in the oil product are enriched and agglomerated; through first distillation and second distillation, the yield of liquid oil is further improved, residues in the liquid oil are further enriched and agglomerated, the residues are discharged outwards from the bottom of a distillation device to the outside, so that the residues are avoided from entering the subsequent process, and the solid content of the residues in the liquid oil is reduced.

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
CPCC10G1/002C10G1/06C10G2300/10C10G2300/1011C10G2300/70
Inventor 林科李林郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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