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Multistage liquefaction process of biomass

A biomass and process technology, which is applied in the field of multi-stage liquefaction of biomass, can solve the problems of small amount of biomass transported by the pump, low conversion rate of biomass, and unstable transportation, etc., so as to achieve smooth operation and transportation, and reduce the Industrial cost and energy consumption, effect of volume reduction

Active Publication Date: 2018-06-29
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

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the shortcomings of the existing biomass liquefaction process, such as the pump’s delivery of biomass is small, the transportation is not stable, the conversion rate of biomass is low, and the energy consumption is high. Multi-stage liquefaction process of substances

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A multi-stage liquefaction process for biomass, comprising the steps of:

[0061] Biomass Pretreatment

[0062] Put rice straw and reed straw into a drier and dry at 50°C for 5 hours until the water content is lower than 2wt%, and then send them into an ultrafine pulverizer for primary crushing. The median particle size after primary crushing is 100 μm, and then the primary The pulverized rice straw and reed straw were fed into a plodder for compression extrusion molding at a temperature of 30°C and a pressure of 3 MPa, and then secondary pulverization. The median particle size after secondary pulverization was 30 μm. The bulk density of rice straw and reed straw after secondary crushing is 500kg / m 3 ,spare.

[0063] Preparation of the first catalyst

[0064] (1) taking biochar as the first biochar carrier;

[0065] (2) loading iron oxide on the above-mentioned first biomass charcoal carrier, and performing sulfuration treatment to prepare the first catalyst.

...

Embodiment 2

[0081] A multi-stage liquefaction process for biomass, comprising the steps of:

[0082] Biomass Pretreatment

[0083] Put the wheat straw and corn straw into the drier and dry at 70°C for 3 hours until the water content is lower than 2wt%, and then send them into the superfine pulverizer for primary crushing, the median particle size after primary crushing is 300 μm, and then the primary crushing The crushed wheat stalks and corn stalks were fed into the plodder for compression extrusion molding at a temperature of 60°C and a pressure of 0.5 MPa, and then secondary crushing was carried out. The median particle size after secondary crushing was 50 μm. The bulk density of wheat straw and corn straw after secondary crushing is 400kg / m 3 ,spare.

[0084] Preparation of the first catalyst

[0085] (1) taking biochar as the first biochar carrier;

[0086] (2) Loading iron oxyhydroxide on the above-mentioned first biomass charcoal carrier, and performing sulfuration treatment...

Embodiment 3

[0102] A multi-stage liquefaction process for biomass, comprising the steps of:

[0103] Biomass Pretreatment

[0104] Send the cotton stalks into the drier and dry them at 60°C for 4 hours until the water content is lower than 2wt%, and then send them into the superfine pulverizer for primary crushing. The median particle size after primary crushing is 200 μm, and then the primary crushed Cotton stalks are fed into the briquetting machine for compression extrusion molding at a temperature of 50°C and a pressure of 2 MPa, and then secondary crushing is carried out. The median particle size after the secondary crushing is 40 μm, and the cotton straw after the secondary crushing The bulk density of straw is 450kg / m 3 ,spare.

[0105] Preparation of the first catalyst

[0106] (1) taking biochar as the first biochar carrier;

[0107] (2) Loading iron hydroxide and iron oxide on the above-mentioned first biomass charcoal carrier, and performing sulfuration treatment to prep...

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Abstract

The invention relates to the field of biological energy sources, in particular to a multistage liquefaction process of biomass. Slurry for the biological energy sources is prepared by the steps of sequentially carrying out drying, primary crushing, compressing and secondary crushing on straw, and then mixing the product with a first catalyst to obtain a mixture; adding the obtained mixture into anoil product, and grinding to prepare slurry with a straw concentration of 30-60wt%. According to the multistage liquefaction process of the biomass, a treatment process of first compressing and thensecondary crushing is carried out on the straw for the first time, and the loose straw is sequentially subjected to stages such as rearrangement, mechanical denaturation and shaping rheology by compressing the biomass, so that the volume of the straw is greatly reduced, the porosity of the straw is further reduced, the density and specific gravity of the straw are increased, the straw is more easily dispersed in the oil product, the content of the straw in the oil product is increased, and the concentration of a reaction material is increased; the multistage liquefaction process increases thebiomass conveying capacity of a pump within unit time, guarantees the smooth operation and transportation of the pump, and increases the conversion rate of the biomass.

Description

technical field [0001] The invention relates to the field of bioenergy, in particular to a multistage liquefaction process of biomass. Background technique [0002] Biomass refers to all organic substances formed directly or indirectly by photosynthesis of green plants, including plants, animals, microorganisms and their excretion and metabolites. It is renewable, low-pollution and widely distributed. Therefore, from the perspective of energy security Starting from environmental protection, the development and utilization of biomass has become the strategic focus of the current development of renewable energy. [0003] Biomass liquefaction technology is an important part of the utilization of biomass resources. The liquefaction mechanism of biomass is as follows: biomass is first cracked into oligomers, and then dehydrated, dehydroxylated, dehydrogenated, deoxygenated and decarboxylated to form small molecules Compounds, small molecular compounds then generate new compounds...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/06C10G1/08
CPCC10G1/065C10G1/086C10G2300/1007C10G2300/1011C10G2300/70
Inventor 林科李林郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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