Preparation method of biomass charcoal material

A technology of biochar and microwave absorbing materials, which is applied in the field of preparation of biochar materials, can solve the problems of uneven particle size, low efficiency, and tar generation of biochar materials, and achieve the effect of environmental protection

Inactive Publication Date: 2017-01-04
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing methods for preparing biochar materials have low output, low efficiency, and tar generation, and the prepared biochar materials have uneven particle size and are easy to agglomerate, which seriously hinders the large-scale production of biochar materials

Method used

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  • Preparation method of biomass charcoal material
  • Preparation method of biomass charcoal material
  • Preparation method of biomass charcoal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The agricultural waste is dried, crushed, and sieved to obtain a precursor; the precursor is sealed in a crucible, and the crucible is placed in a microwave absorbing material, and the microwave absorbing material is heated by microwave to obtain a biomass charcoal material. In this embodiment, the microwave charcoal bath technology is used to place the substance to be heated in a thermally conductive container, that is, a crucible, and a microwave absorbing material is provided on the outside to absorb microwaves to rapidly increase the temperature, transfer the heat to the thermally conductive container, and then quickly heat The material in the crucible completes the preparation of the biomass charcoal material. The preparation method heats quickly, has a short reaction time, does not produce tar, and facilitates subsequent processing; it also does not require a protective atmosphere, making the operation process more convenient.

Embodiment 2

[0036] Compared with Example 1, the agricultural waste in this example is straw, the skin of agricultural products, the core of agricultural products, or processed agricultural wastes.

Embodiment 3

[0038] Compared with Example 1, the drying in this example is mechanical drying, and the moisture content of the agricultural waste after drying is less than or equal to 5% in terms of mass percentage.

[0039] Because the microwave heating method is used in the present invention, and no protective atmosphere is used to protect the heated precursor, the moisture in the raw materials must be strictly controlled to avoid oxidation reactions and reduce the quality of the products.

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Abstract

The invention relates to a preparation method of a biomass charcoal material. The preparation method comprises: drying, crushing and sieving agricultural wastes to prepare a precursor; sealing the precursor into a crucible and putting the crucible into a microwave absorption material; heating the microwave absorption material by microwaves to prepare the biomass charcoal material. The agricultural wastes are straw, skins of agricultural products, kernels of the agricultural products or processed agricultural wastes. The preparation method of the biomass charcoal material, provided by the invention, has the following beneficial effects that the agricultural wastes are used as the raw materials so that environment protection and reutilization of the agricultural wastes are facilitated; the preparation method of the biomass charcoal material does not need a protective atmosphere; in a preparation process of the biomass charcoal material, no coke tar is generated; the preparation method of the biomass charcoal material can realize intermittent production.

Description

Technical field [0001] The invention relates to a method for preparing a carbon material, in particular to a method for preparing a biomass carbon material. Background technique [0002] In recent years, with the development of modern agriculture and related processing industries, agricultural waste has been increasing. How to deal with agricultural wastes rationally has always plagued people. At the same time, the environmental problems caused by agricultural wastes have attracted more and more attention. The effective treatment of agricultural wastes has become an urgent problem to be solved. However, since agricultural waste is rich in carbon-containing organic compounds such as sugars, it can be used as a renewable biomass resource. Therefore, finding the use value of agricultural waste is the best way to deal with agricultural waste. [0003] Turning agricultural waste into biomass charcoal materials is one of the effective ways to recycle waste, whether from the perspective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
CPCC01P2002/72C01P2004/03C01P2006/12
Inventor 于锋邢文思祁佩荣代斌
Owner SHIHEZI UNIVERSITY
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