System and method for preparing carbon nanofiber and hydrogen through microwave continuous pyrolysis

Abstract

The invention relates to a system and method for preparing carbon nanofibers and hydrogen through microwave continuous pyrolysis. The system comprises a melting feeding device used for carrying out heating melting treatment on materials, a microwave pyrolysis device used for carrying out catalytic pyrolysis on materials, a pyrolysis gas purification and utilization device and a power generation device; the microwave pyrolysis device comprises a material inlet, a pyrolysis gas outlet and a carbon product outlet, and the material inlet is connected with the material outlet of the melting feeding device; the pyrolysis gas purification and utilization device is connected with the pyrolysis gas outlet and is used for carrying out hydrogen purification and residual gas separation on the pyrolysis gas generated by catalytic pyrolysis; and the power generation device comprises a small internal combustion engine and a power generator, and the small internal combustion engine uses residual gas as fuel and conveys flue gas generated by combustion to the melting feeding device to serve as a heat source for material melting. The poly-generation system for co-producing the high-performance carbon material and the hydrogen from the plastic waste is formed, the technical problems that a traditional pyrolysis method is low in product yield and high in energy consumption are solved, and the energy utilization rate is greatly increased.

Description

technical field [0001] The invention relates to the technical field of pyrolysis, in particular to a system and method for producing carbon nanofibers and hydrogen by microwave continuous pyrolysis. Background technique [0002] Worldwide, more than 60% of waste plastics are disposed of by extensive methods of incineration and landfill, and the problems of water, air and soil pollution and land occupation cannot be ignored. Higher value-added utilization of waste plastics can be achieved by preparing higher-performance carbon nanomaterials under fine reaction regulation and applying them to high-tech industries such as fuel cells, flexible materials, and sensors. However, the traditional pyrolytic vapor deposition preparation method requires high reaction temperature and long deposition time, and there are bottleneck problems such as low recovery rate of the target product, poor quality and high energy consumption of the system. Contents of the invention [0003] The inve...

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Problems solved by technology

[0003] The invention provides a system and method for producing carbon nanofibers and hydrogen by microwave continuous pyrolysis, which solves the technical problems of low product yield and high energy consumption in traditional pyrolysis methods

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