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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-refining process, can solve the problems of not realizing coal, biomass and oil mixing production technology, limited coal powder content, low liquefaction efficiency, etc., and achieve clean Efficient utilization, reduced hydrogen consumption, high fluidity effect

Active Publication Date: 2020-03-10
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

[0016] 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 coal, biomass and oil in the prior art on this basis. The defects of mixing production technology, and then provide a co-liquefaction hydrogenation process of coal and biomass with less hydrogen consumption, high yield of liquefied oil and less green coke

Method used

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  • One-pot liquefaction process of coal and biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] The present embodiment provides a kind of preparation method of the second catalyst, comprising the following steps:

[0075] Preparation of biochar carrier:

[0076] 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 10 hours.

[0077] Loading of the second active ingredient:

[0078] 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

[0080] The one-pot liquefaction process of coal and biomass provided in this embodiment comprises the following steps:

[0081] Straw pretreatment:

[0082] Taking corn stalks, drying and dehydrating them until the water content is lower than 2wt%, crushing them until the median particle size is 100 μm, and then sending them into a plodder for extrusion molding with a molding pressure of 2 MPa to obtain compressed straw materials;

[0083] 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.

[0084] Pretreatment of coal raw materials:

[0085]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 5MPa to obtain lignite compressed material;

[0086] Send the compressed lignite material into a ball mill for pulverization to obtain a pulverized li...

Embodiment 3

[0091] The one-pot liquefaction process of coal and biomass provided in this embodiment comprises the following steps:

[0092] Pretreatment of biomass raw materials:

[0093] (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 300 μm.

[0094] (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.

[0095] (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 30 μm, set aside.

[0096] Pretreatment of coal raw materials:

[0097] (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 a clean energy source, in particular to a coal and biomass mixing process. The mixing liquification of coal, biomass and oil is creatively realized forthe first time. Firstly, coal and biomass raw materials are subjected to treatment of crushing, compression and secondary crushing; then, slurry is prepared; biomass coal oil slurry with high solid content and capability of being stably conveyed by a pump is successful obtained, so that high-viscosity waste oil which cannot be used as a coal and biomass liquification solvent in the prior art can also be utilized. Hydrogen gas is introduced into the biomass coal oil slurry for reaction, so that coal and biomass are liquified at high pressure and high temperature; then, cracking and hydrogenation reaction are further performed, so that the conversion of coal and biomass into biological oil is realized. The process provided by the invention has the advantages that the coal and biomass conversion rate can reach 90 to 99 percent; the yield of the biological oil can reach 60 to 80 percent; the residue quantity is not higher than 2.5 weight percent.

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 Patents(China)
IPC IPC(8): C10G1/06C10G1/08C10G3/00
CPCC10G1/06C10G1/065C10G1/083C10G1/086C10G3/46C10G3/50C10G2300/10C10G2300/1007C10G2300/1011C10G2300/1037C10G2300/70Y02P30/20
Inventor 林科李林郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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