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Biomass carbonization method and soil conditioner prepared by method

A biomass charcoal and carbonization technology, applied in chemical instruments and methods, biofuels, soil conditioning materials, etc., can solve the problems of high energy consumption of biomass carbonization, high liquid-phase straw oil yield, and unstable straw oil, etc. Achieve the effect of improving fertilizer utilization, reducing nutrient loss and improving chemical stability

Inactive Publication Date: 2019-07-16
南京三聚生物质新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the high energy consumption of biomass carbonization in the prior art, the high yield of liquid-phase straw oil and high oxygen content, the instability of straw oil, and the occurrence of condensation reactions that will cause pipeline blockage. Thereby providing a method for biomass carbonization; meanwhile, the present invention also provides a soil conditioner prepared by the method

Method used

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  • Biomass carbonization method and soil conditioner prepared by method

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Embodiment 1

[0022] This embodiment provides a method for carbonizing biomass, comprising the steps of:

[0023] (1) Take by weighing 5.82kg of rice husk particles and 0.18kg of attapulgite respectively, mix uniformly, and dry to obtain mixture particles;

[0024] (2) Put the above-mentioned mixture particles in a carbonization furnace, feed nitrogen gas until the oxygen content in the carbonization furnace is no more than 3%, heat to 350° C., and carbonize the mixture particles at this temperature for 1.0 h to obtain solid matter and straw gas;

[0025] (3) Condensing the above-mentioned straw gas to obtain a liquid phase product and non-condensable gas, and the liquid phase product includes straw oil and wood vinegar.

Embodiment 2

[0027] This embodiment provides a method for carbonizing biomass, comprising the steps of:

[0028] (1) Take by weighing 5.7kg rice husk debris and 0.3kg attapulgite respectively, mix uniformly, and dry to obtain mixture granules;

[0029] (2) Put the above-mentioned mixture particles in a carbonization furnace, feed nitrogen gas until the oxygen content in the carbonization furnace is not more than 3%, heat to 450° C., and carbonize the mixture particles at this temperature for 1.0 h to obtain solid matter and straw gas;

[0030] (3) Condensing the above-mentioned straw gas to obtain a liquid phase product and non-condensable gas, and the liquid phase product includes straw oil and wood vinegar.

Embodiment 3

[0032] This embodiment provides a method for carbonizing biomass, comprising the steps of:

[0033] (1) Take by weighing 5.4kg rice husk particles and 0.6kg attapulgite respectively, mix uniformly, and dry to obtain mixture particles;

[0034] (2) Put the above-mentioned mixture particles in a carbonization furnace, feed nitrogen gas until the oxygen content in the carbonization furnace is no more than 3%, heat to 430° C., and carbonize the mixture particles at this temperature for 1.0 h to obtain solid matter and straw gas;

[0035] (3) Condensing the above-mentioned straw gas to obtain a liquid phase product and non-condensable gas, and the liquid phase product includes straw oil and wood vinegar.

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Abstract

The invention relates to the technical field of biomass carbonization, and discloses a biomass carbonization method and a soil conditioner prepared by the method. According to the method, straw particles and attapulgite are co-carbonized at a temperature of 250-450 DEG C, and the attapulgite has rich nano-pore structures, trace elements and other special structures, so that rich active centers areformed on the surface of the attapulgite; apparent activation energy of straw pyrolysis gas can be reduced, and continuous cracking reaction of macromolecular liquid obtained by primary pyrolysis ispromoted, so that the yield of a macromolecular liquid-phase product is reduced, and the yield of micromolecular non-condensable gas is increased. According to the method disclosed by the invention, the carbonization reaction temperature can be reduced, the oxygen content in biological oil can be reduced, and a part of wax-like substances can be obtained, so that stability of the biological oil isimproved, meanwhile, the phenomena that carbonization equipment and pipelines of the carbonization equipment are blocked and the like are avoided, and thus the service life of the equipment is prolonged.

Description

technical field [0001] The invention relates to the technical field of biomass carbonization, in particular to a method for biomass carbonization and a soil improver prepared by the method. Background technique [0002] Biomass refers to various organisms produced through photosynthesis using the atmosphere, water, land, etc., that is, all living organic substances that can grow are collectively referred to as biomass. Biomass, as a carrier for storing biomass energy, has many types and abundant reserves. At present, the biomass that can be developed and utilized on a large scale mainly refers to agricultural and forestry wastes, such as rice and straw. With the continuous development of the world economy, the shortage of resources and environmental pollution caused by the massive consumption of fossil energy have become increasingly prominent. In recent years, the development and utilization of biomass has attracted great attention from researchers all over the world. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C09K17/08C05G3/04C09K101/00C05G3/80
CPCC05D9/00C05G3/80C09K17/08C09K2101/00C10B53/02C05F11/00Y02E50/10
Inventor 张少明李泓左静
Owner 南京三聚生物质新材料科技有限公司
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