System and method for producing activated carbon and cogenerating power by using Arundo donax Linn

Abstract

The invention discloses a system and method for producing activated carbon and cogenerating power by using Arundo donax Linn. The system comprises a pretreatment system, a pyrolyzing furnace, a combustion chamber, a waste heat boiler and a power generator, wherein the pretreatment system comprises a discharge port; the pyrolyzing furnace comprises a feed port, a superheated steam inlet, an activated carbon outlet and an oil-gas outlet; the combustion chamber comprises an oil-gas inlet and a fume outlet; the waste heat boiler comprises a fume inlet and a superheated steam outlet; and the power generator comprises a superheated steam inlet. By using the system and method, the Arundo donax Linn is pretreated and pyrolyzed, and secondary activation of biological carbon is carried out in the holding process after the pyrolysis finishes, thereby obtaining the activated carbon. The high-temperature oil gas generated by pyrolysis is combusted and subjected to heat exchange by the waste heat boiler to generate superheated steam, part of the superheated steam is used for activating biological carbon, and part of the superheated steam is used for steam turbine power generation. The system and method implement cogeneration of activated carbon and electric power, thereby reducing the demands for external energies and having the effects of energy saving and emission reduction.

Description

technical field [0001] The invention belongs to the technical field of agricultural resource utilization, and in particular relates to a system and method for producing activated carbon and cogeneration of electricity from reed bamboo. Background technique [0002] Biomass is the material that constitutes the body of animals and plants. Plants are mainly composed of starch and cellulose, and animals are mainly composed of fat and protein. They are collectively referred to as biomass. It is estimated that lignin and cellulose, the main components of plant biomass, are continuously regenerated at a rate of about 164 billion tons per year, which is equivalent to 15 to 20 times the current annual oil production in terms of energy. If these resources can be utilized, human beings are equivalent to possessing an inexhaustible treasure house of resources. Moreover, since biomass is derived from photosynthesis, it produces CO after combustion 2 , does not increase atmospheric CO ...

AI Technical Summary

Problems solved by technology

The biochar produced by pyrolyzing biomass has a highly developed pore structure and increased surface negative charge, but it is far behind the adsorption capacity of activated carbon. As activated carbon, it needs further activation

[0006] The existing technology cannot realize the preparation of activated carbon from biomass and co-generation of power generation

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