One-pot liquefaction process of biomass

A technology of biomass and biomass pretreatment, which is applied in the field of one-pot liquefaction of biomass, which can solve the problems of small amount of biomass transported by the pump, low yield of bio-oil, and unstable transportation, etc., to achieve smooth operation Effects on transport, volume reduction, and porosity reduction

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

[0007] 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 energy consumption is high, and the yield of bio-oil is low, and then a bio-oil yield is provided. One-pot liquefaction process of substances

Method used

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  • One-pot liquefaction process of biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A one-pot liquefaction process of biomass, comprising the steps of:

[0044] Biomass Pretreatment

[0045] Put the rice straw and reed straw into the dryer and dry at 70°C for 5 hours until the moisture content is lower than 2wt%, and then send them into the superfine pulverizer for primary crushing, the median particle size after primary crushing is 100 μm, and then the primary crushing The pulverized rice straw and reed straw were fed into a plodder for compression extrusion molding at a temperature of 60°C and a pressure of 2 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 400kg / m 3 ,spare.

[0046] Catalyst preparation

[0047] S1. After the biochar is acidified, a biochar carrier is obtained;

[0048] S2. Vibrating and grinding the oxide of Mo and the above-mentioned biomass carbon carrier to obtain the biomass carbon loaded with...

Embodiment 2

[0057] A one-pot liquefaction process of biomass, comprising the steps of:

[0058] Biomass Pretreatment

[0059] Put the wheat straw and corn straw into the drier and dry at 110°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 30°C and a pressure of 5 MPa, and then secondary crushing was carried out. The median particle size after the secondary crushing was 50 μm. The bulk density of wheat straw and corn straw after the first crushing is 800kg / m 3 ,spare.

[0060] Catalyst preparation

[0061] S1. After the biochar is acidified, a biochar carrier is obtained;

[0062] S2. After the oxides of W, the oxides of Fe and the above-mentioned biomass charcoal carrier are subjected to plane gr...

Embodiment 3

[0071] A one-pot liquefaction process of biomass, comprising the steps of:

[0072] Biomass Pretreatment

[0073] Put the cotton stalks into the drier and dry them at 90°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 230 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 3.5 MPa, and then secondary crushing is carried out. The median particle size after the secondary crushing is 40 μm, and the The bulk density of cotton straw is 620kg / m 3 ,spare.

[0074] Preparation of biochar loaded with Mo oxide and Pd oxide

[0075] S1. After the biochar is acidified, a biochar carrier is obtained;

[0076] S2. Vibrating and grinding Mo oxides, Pd oxides, and the above-mentioned biomass charcoal carrier to obtain biochar with a particle size of...

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Abstract

The invention discloses a one-pot liquefaction process for a biomass. A slurry is prepared by the following steps: performing drying on straw, performing primary crushing, performing compression, performing secondary crushing, then mixing the crushed straw, a catalyst and a vulcanizing agent to obtain a mixture, and adding the above mixture into water to obtain the slurry with a straw concentration of 35-50wt%. The process provided by the invention performs treatment of first compression and then secondary crushing on the straw for the first time, compression treatment is performed on the biomass, the loose straw is subjected to stages of re-displacement, mechanical deformation and the like in sequence, so that the volume of the straw is greatly reduced, the density and specific gravity can be increased, dispersion of the straw in water is facilitated, the content of the straw in the water can be improved, the amount of the biomass conveyed by a pump per unit time can be improved, so that the efficiency of the overall biomass liquefaction process is improved, the industrial costs and energy consumption are reduced, and smooth operation and delivery of the pump are realized.

Description

technical field [0001] The invention relates to the technical field of bioenergy conversion, in particular to a one-pot liquefaction process of biomass. Background technique [0002] Coal, crude oil, natural gas, oil shale and other fossil non-renewable energy sources are becoming increasingly exhausted with the rapid development of social economy, and the CO produced after their combustion 2 , SO 2 , NO x The increasingly serious environmental pollution caused by such pollutants has forced human beings to seriously consider ways to obtain energy and methods to improve the environment. Biomass is a kind of renewable energy, which has huge potential and advantages in meeting energy demand, reducing environmental pollution, and improving energy structure. Biomass refers to all organic substances formed by photosynthesis of green plants that can be directly or indirectly used , including plants, animals, microorganisms and their excretion and metabolites, which are renewable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/08
CPCC10G1/083C10G1/086C10G2300/1014
Inventor 林科李林郭立新
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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