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A method for direct liquefaction of biomass

A biomass and direct technology, which is applied in the preparation of liquid hydrocarbon mixtures, the treatment of hydrocarbon oil, and the petroleum industry. It can solve the problems of high residual solid content in liquid oil, low amount of biomass transported by pumps, and unstable transportation. Achieve the effects of reducing porosity, realizing smooth operation and transportation, and reducing volume

Active Publication Date: 2020-03-17
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

[0006] For this reason, the technical problem to be solved by the present invention is to overcome the problems in the existing biomass liquefaction process, such as the small amount of biomass delivered by the pump and the unstable transportation, high energy consumption, high liquid oil yield and high residue solid content in the liquid oil, etc. defects, and then provide a method for direct liquefaction of biomass

Method used

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  • A method for direct liquefaction of biomass

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Effect test

Embodiment 1

[0056] The method for direct liquefaction of biomass provided by the embodiments of the present invention comprises the following steps:

[0057] (1) Put the wheat straw 1 into the biomass pretreatment device 2 for drying, primary crushing, compression, and secondary crushing in sequence, wherein the drying temperature is 50°C and the drying time is 5 hours, and the moisture content of the dried straw is lower than 2wt %, the median particle size after primary crushing is 100μm, the compression temperature is 30°C, and the pressure is 3MPa. After secondary crushing, wheat straw particles with a median particle size of 30μm are obtained, and the bulk density of wheat straw particles is 500kg / m 3 ;

[0058] (2) The amorphous alumina 3 enters the hydrogenation catalyst preparation device 4 for loading to obtain a hydrogenation catalyst with Mo oxide and Ni oxide loaded on the amorphous alumina (its particle size is 20 μm, and the loading capacity is 10wt%) , mixing the wheat str...

Embodiment 2

[0069] The method for direct liquefaction of biomass provided by the embodiments of the present invention comprises the following steps:

[0070] (1) Put soybean straw, ramie straw, and sorghum straw 1 into the biomass pretreatment device 2 for drying, primary crushing, compression, and secondary crushing in sequence. The drying temperature is 70°C and the drying time is 3 hours. The water content is lower than 2wt%, the median particle size after primary crushing is 300μm, the compression temperature is 60°C, and the pressure is 0.5MPa. After secondary crushing, soybean straw, ramie straw and sorghum straw with a median particle size of 50μm are obtained. Mixed granules of straw, the bulk density of the above mixed granules is 400kg / m 3 ;

[0071] (2) The amorphous alumina 3 enters the hydrogenation catalyst preparation device 4 for loading to obtain a hydrogenation catalyst with Mn oxides and Fe oxides loaded on the amorphous alumina (its particle size is 10 μm, and the loa...

Embodiment 3

[0082] The method for direct liquefaction of biomass provided by the embodiments of the present invention comprises the following steps:

[0083] (1) Put corn stalks and broad bean stalks 1 into the biomass pretreatment device 2 for drying, primary crushing, compression, and secondary crushing in sequence. The drying temperature is 60°C and the drying time is 4 hours. The water content is less than 2wt%, the median particle size after primary crushing is 200μm, the compression temperature is 40°C, and the pressure is 2MPa, and the mixed particles of corn straw and broad bean straw with a median particle size of 40μm are obtained after secondary crushing. The bulk density of the mixed particles is 440kg / m 3 ;

[0084] (2) The amorphous alumina 3 enters the hydrogenation catalyst preparation device 4 for loading, and obtains a hydrogenation catalyst (which has a particle size of 15 μm and a loading capacity of 15 wt%) with W oxide and Pd oxide loaded on the amorphous alumina. ...

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Abstract

The invention relates to the field of biological energy, in particular to a direct liquefaction method of biomass. Biomass slurry is prepared through steps as follows: straw is subjected to drying, primary smashing, compressing and secondary smashing in sequence and then is mixed with a hydrogenation catalyst and a vulcanizing agent, a mixture is obtained and added to a hydrogen-donor solvent to be ground into slurry, and the biomass slurry with straw concentration being 30wt%-60wt% is prepared. The straw is subjected to first compression and later secondary smashing initiatively with the treatment technology, so that size of the straw is substantially reduced, dispersion of the straw into an oil product is facilitated, content of the straw in the oil product can be increased, concentration of reaction materials is increased, delivery amount of the biomass in unit time by a pump is increased, and stable operation and delivery of the pump are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of biomass liquefaction, and in particular relates to a method for directly liquefying biomass. Background technique [0002] All organic matter that can grow is collectively referred to as biomass. In a broad sense, biomass refers to all plants, microorganisms, and animals that feed on plants and microorganisms and their waste; in a narrow sense, biomass is mainly Refers to the straw, trees and other lignocellulose (lignin for short) other than grain and fruit in the process of agricultural and forestry production, leftovers of agricultural product processing, agricultural and forestry waste, and livestock manure and waste in the process of animal husbandry. Common representative biomass includes crops, crop waste, wood, wood waste, and animal manure. There is interdependence and interaction between various biomass. Biomass can be used as food and industrial raw materials, and can also improve the environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/00
CPCC10G1/006C10G2300/1011
Inventor 林科李林郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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