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A kind of method and application thereof by biomass liquefaction preparation wood oil

A bio-heavy oil and biological technology, applied in the petroleum industry, liquid carbon-containing fuel, fuel, etc., can solve the problems of failing to meet the standards of marine oil and limiting the conversion rate of biomass tar, and achieve the reduction of post-processing technology and low equipment requirements , The effect of reducing the reaction temperature

Active Publication Date: 2021-08-06
台州立拓能源有限公司
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Problems solved by technology

Although this method realizes the conversion of biomass to biofuel, most of the carbon available for fuel is fixed in biochar, which limits the conversion rate of biomass tar. At the same time, the biomass tar produced by pyrolysis has been proved to be unable to achieve Standards for marine oil

Method used

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  • A kind of method and application thereof by biomass liquefaction preparation wood oil
  • A kind of method and application thereof by biomass liquefaction preparation wood oil
  • A kind of method and application thereof by biomass liquefaction preparation wood oil

Examples

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Embodiment 1

[0029] Example 1 This example provides a method for bio-heavy oil from corn stalks

[0030] 1) The contents of cellulose, hemicellulose, lignin and ash in corn stalks are 32wt%, 15wt%, 18wt% and 35wt%, respectively. The specific steps of biomass liquefaction are: collect 10kg of corn stalks, and its moisture content is 10wt %, after mechanical treatment, the particles are less than 20mm, and they are put into the reactor by vacuum feeding to ensure that the oxygen volume content is lower than 1%; the mass ratio of water and ethanol in 50kg of water supply solvent is 1:2, and the mass of sulfuric acid is 1.3% of the water co-solvent mass is 0.663kg98% concentrated sulfuric acid, the ratio of straw to liquid is 1:5, react at 160°C for 20 minutes, the cellulose, hemicellulose and lignin in the corn straw are all liquefied, The solid residue is 35wt% ash in the biomass, adding 1kg of 50% calcium hydroxide slurry to neutralize the sulfuric acid in the solution, and filtering to obt...

Embodiment 2

[0039]Embodiment 2 pine wood

[0040] This embodiment provides a method for liquefaction of pine wood to produce heavy biological oil. The cellulose in pine wood, hemicellulose, lignin and ash content are 32wt%, 25wt%, 18wt% and 5wt%, respectively. Biomass liquefaction, specifically The steps are: collect 10kg of pine wood chips with a moisture content of 5wt%, after mechanical treatment, the particle size is less than 20mm, and put them into the reaction kettle by vacuum feeding, and add 70kg of water co-solvent, the mass ratio of wood chips to liquid is 1: 7. The mass ratio of water and furan in the water co-solvent is 1:2, the mass of sulfuric acid is 2.0% of the mass of the water co-solvent, that is, 1.663kg of 98% concentrated sulfuric acid, and react at 200°C for 30 minutes. The cellulose, hemicellulose and lignin of pine wood chips were all liquefied, and the solid residue was 5wt% ash. Add 2.4kg50% calcium hydroxide slurry to neutralize the sulfuric acid in the soluti...

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Abstract

The invention discloses a method for preparing wood oil from biomass liquefaction and its application. It puts the biomass into the reactor after pretreatment, adds water co-solvent in anaerobic state, heats up to 150-220°C under stirring, adds Lewis acid for dehydration reaction, and obtains liquefied biomass mixture; biomass Add alkali to the mixed solution for neutralization reaction, filter after cooling to remove the precipitate obtained by neutralization and the ash in the biomass, the obtained filtrate is a mixture of liquefied biomass and solvent, which is wood oil; its preparation method is simple, The reaction temperature is reduced, the requirements for equipment are low, the energy consumption and heat source requirements are effectively reduced, the complete liquefaction of biomass is realized, and the utilization efficiency of biomass is greatly improved. The obtained product wood oil can be used for the preparation of biological heavy oil. Moreover, the sulfide content in the biomass is very low, so the sulfide content of the obtained bio-heavy oil is significantly lower than that of the heavy oil before mixing, which meets the requirements of green environmental protection and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of biomass treatment, and in particular relates to a method for preparing wood oil from biomass liquefaction and its application. Background technique [0002] Generally, there are several treatment methods for agricultural biomass waste: 1) Returning to the field through on-site incineration, which is common in areas with relatively backward on-site equipment. waste disposal problem. On-site burning and returning to the field produces a large amount of smoke and dust, which seriously pollutes the environment. Now this treatment method has been banned in many areas; 2) Biomass power generation, agricultural biomass waste is directly put into power generation boilers. Although this method solves the pollution problem caused by incineration in situ, the biomass utilization rate is low. [0003] The third is the material pyrolysis method, which uses high temperature (400-600 degrees Celsius) treatment under a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/02
CPCC10L1/02C10L2290/12C10L2290/24C10L2290/543
Inventor 陈都李振宁
Owner 台州立拓能源有限公司
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