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Multi-stage liquefaction system and process for coal and biomass

A liquefaction system and biomass technology, applied in the preparation of liquid hydrocarbon mixtures, petroleum industry, chemical instruments and methods, etc., can solve the problems of high system operating costs, insufficient mixing of hydrogen and reactants, etc., and achieve high production safety , Reduce gas material consumption, enhance mass transfer effect

Pending Publication Date: 2021-01-05
NANJING YANCHANG REACTION TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For this reason, the present invention provides a multi-stage liquefaction system and process of coal and biomass to overcome the problem of high operating costs of the system caused by insufficient mixing of hydrogen and reactants in the prior art

Method used

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  • Multi-stage liquefaction system and process for coal and biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] The bio-oil is prepared using the method described above, wherein:

[0085]The preparation method of biomass kerosene slurry in this example is as follows: take lignite, dry and dehydrate it, pulverize it 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, the sulfided amorphous iron oxyhydroxide and the sulfided amorphous alumina loaded with Mo oxide and Ni oxide were added to the mixture of liquid feces and kitchen waste oil to form a raw material. Substance kerosene slurry.

[0086] Specifically, the pressure in the primary reactor 41 in the system is 3MPa, the temperature is 300°C, and the reaction time is 30min; the pressure in the secondary reactor 42 is 3MPa, th...

Embodiment 2

[0089] The bio-oil is prepared using the method described above, wherein:

[0090] Straw is selected as biomass, and the processing method is as follows: take wheat straw and corn straw, dry and dehydrate them, crush them to a median particle size of 100 μm, and then send them to a plodder for extrusion molding with a molding pressure of 2 MPa to obtain straw compressed material Sending the compressed straw material into a hammer mill for crushing to obtain crushed straw material with a median particle size of 30 μm for use.

[0091] Coal powder is selected from lignite, and the processing method is as follows: take lignite, dry and dehydrate it, crush it to a median particle size of 100 μm, and then send it to a briquetting machine for extrusion molding with a molding pressure of 15 MPa to obtain lignite compressed material; The compressed material is sent into a ball mill for crushing to obtain a brown coal crushed material with a median particle size of 50 μm, which is read...

Embodiment 3

[0096] The bio-oil is prepared using the method described above, wherein:

[0097] Reed is selected as biomass, and the processing method is as follows: take the reed, dry and dehydrate it, and then send it to the jet mill for crushing treatment to obtain the primary crushed reed material with a particle size D50 of 300 μm; send the primary crushed reed material to the briquetting machine Or extruding with a layering machine, the molding pressure is 5MPa, to obtain compressed reed material; the compressed reed material is sent to a jet mill for secondary crushing, to obtain secondary crushed reed material with a particle size D50 of 50 μm, which is ready for use.

[0098] The pulverized coal is made of Shendong long-flame coal, and the treatment method is as follows: take Shendong long-flame coal, dry and dehydrate it, and then send it to a ball mill for crushing treatment to obtain primary crushed material of Shendong long-flame coal, with a particle size D50 of 80 μm; The pr...

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Abstract

The invention relates to a multistage liquefaction system and process for coal and biomass. The multistage liquefaction system comprises a liquid-phase feeding unit, a gas-phase feeding unit, a micro-interface generator, at least two reactors and a separation tank. According to the invention, gas is crushed to form micron-sized bubbles, and the micron-sized bubbles are mixed with biomass keroseneslurry to form a gas-liquid emulsion, so that the phase contact area of a gas phase and a liquid phase is increased, the effect of enhancing mass transfer within a lower preset range is achieved, andthe reaction efficiency of the system is improved while the energy consumption is reduced; meanwhile, mass transfer is greatly enhanced, so that the gas-liquid ratio can be greatly reduced, and the energy consumption of subsequent gas circulating compression is reduced while the gas material consumption is reduced; and the method is low in process severity, high in production safety, low in ton product cost and high in market competitiveness.

Description

technical field [0001] The invention relates to the technical field of coal liquefaction, in particular to a multistage liquefaction system and 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 st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/06C10G1/08B01J8/22C10G7/00
CPCB01J8/22C10G1/06C10G1/08C10G7/00C10G2300/10C10G2300/1011C10G2300/4006C10G2300/4012C10G2300/70
Inventor 张志炳李大鹏周政门存贵孟为民王宝荣杨高东罗华勋张锋李磊杨国强田洪舟曹宇
Owner NANJING YANCHANG REACTION TECH RES INST CO LTD
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