Method for preparing biological carbon and system for implementing method

Abstract

The invention discloses a method for preparing biological carbon and a system for implementing the method. The method comprises the following steps: S1, pre-treating biomasses in a pre-treatment device, so as to obtain a block-shaped raw material with the moisture content which is less than a pre-set weight ratio and the grain diameter in a pre-set range; S2, carrying out pyrolysis reaction on theblock-shaped raw material in a pyrolysis device to obtain the biological carbon and pyrolyzed oil gas; S3, carrying out ash removal treatment on the biological carbon in an ash removal device. Therefore, the ash removal device is used for carrying out ash removal on the biological carbon through the method, so that the ash content of the biological carbon is reduced and a utilization way is increased; the biological carbon can be used as a raw material for producing a graphite electrode, graphene, activated carbon and the like, which have high economic value; the problems that the quality ofthe biological carbon is poor and only low-end products can be produced are solved, and the economic benefits of a treatment technology are increased.

Description

technical field [0001] The invention relates to the technical field of solid waste resource treatment, in particular to a method for preparing biochar and a system for implementing it. Background technique [0002] The annual output of biomass is huge, about 146 billion tons, and its use as energy accounts for 14% of the world's total energy consumption, making it the fourth largest energy source in the world today. Fossil energy is non-renewable, and the utilization process will cause environmental problems such as "acid rain, greenhouse effect", etc. Biomass energy has NO X , SO X The advantages of low carbon emissions and other advantages have been strongly supported by the national government and policies, but at present the main way to use biomass is incineration to generate electricity. This technology has problems such as polluting the environment, single product (electric energy), and poor economic benefits. So how to use it? Its efficient resource utilization has ...

AI Technical Summary

Problems solved by technology

Fossil energy is non-renewable, and the utilization process will cause environmental problems such as "acid rain, greenhouse effect", etc. Biomass energy has NO X , SO X The advantages of low carbon emissions and other advantages have been strongly supported by the national government and policies, but at present the main way to use biomass is incineration to generate electricity. This technology has problems such as polluting the environment, single product (electric energy), and poor economic benefits. So how to use it? Its efficient resource utilization has attracted the attention of scholars at home and abroad

[0003] Biomass pyrolysis is a global advanced utilization technology. The pyrolysis process will produce high value-added products (pyrolysis oil, pyrolysis gas and biochar). Between 5%-30%, the presence of ash reduces the utilization value of biochar

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