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One-pot liquefaction process of coal and biomass

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

Inactive Publication Date: 2018-07-10
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 one-pot liquefaction process of coal and biomass with less hydrogen consumption and high yield of liquefied oil

Method used

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  • One-pot liquefaction process of coal and biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] The present embodiment provides a kind of preparation method of the second catalyst, comprising the following steps:

[0072] Preparation of biochar carrier:

[0073] Use H + The acidic medium with a concentration of 5mol / L, acidified the biochar at 80°C with a volume ratio of 15:1 for 10 hours to obtain a biochar carrier; as another alternative, OH can also be used - The alkaline medium with a concentration of 0.5mol / L acidified the biochar at a volume ratio of 5:1 at 30°C for 10h.

[0074] Loading of the second active ingredient:

[0075] The oxides of Mo and W and the biomass charcoal carrier are vibrated and ground together to realize the loading of active components on the biochar carrier, and obtain the second catalyst with a particle size of 100 μm-200 μm. Based on the mass of metal elements, the second active component accounts for 5% of the mass of the biochar carrier.

Embodiment 2

[0077] The one-pot liquefaction process of coal and biomass provided in this embodiment comprises the following steps:

[0078] Straw pretreatment:

[0079] Take corn stalks, dry and dehydrate them to a moisture content of 1 wt%, crush them to a median particle size of 100 μm, and then send them to a plodder for extrusion molding at a molding pressure of 2 MPa to obtain compressed straw materials;

[0080] Send the straw compressed material into a hammer mill for crushing to obtain straw crushed material with a particle size of 50 μm, which is ready for use.

[0081] Pretreatment of coal raw materials:

[0082] Take lignite, dry and dehydrate it, pulverize until the median particle size is 50 μm, and then send it to a briquetting machine for extrusion molding, and the molding pressure is 5 MPa to obtain lignite compressed material;

[0083] Send the compressed lignite material into a ball mill for pulverization to obtain a pulverized lignite material with a median partic...

Embodiment 3

[0088] The one-pot liquefaction process of coal and biomass provided in this embodiment comprises the following steps:

[0089] Pretreatment of biomass raw materials:

[0090] (1) Get the reed, dry it to a water content of 1wt%, and then send it into 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, part...

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Abstract

The invention relates to the technical field of clean energy, particular to a coal and biomass co-refining process. According to the present invention, the mixing liquefaction of coal and biomass is firstly achieved; coal and a biomass raw material are sequentially subjected to crushing, compressing and re-crushing, then a slurry is prepared so as to successfully obtain the biomass coal water slurry having the high solid content and capable of being stably conveyed by a pump, a reaction is performed by introducing hydrogen into the biomass coal water slurry so as to hydrolyze the coal and thebiomass at a high temperature under a high pressure, and the hydrolyzed product is further subjected to cracking and hydrogenation so as to achieve the conversion of the coal and the biomass to biological oil; and with the process, the conversion rate of coal to biomass is up to 90-100%, the yield of the biological oil is more than 60-86%, and the generated coke is less than 0.1%.

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): C10G1/06C10L1/32
CPCC10G1/06C10G2300/1011C10L1/326
Inventor 林科李林郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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