Method for preparing nano conductive carbon by cracking organic compound through hybrid plasma technology

Abstract

The invention provides a method for preparing nano conductive carbon by cracking an organic compound through a hybrid plasma technology. The method is characterized in that a first cracking reaction zone formed by a direct current arc plasma and a second cracking reaction zone formed by a hybrid plasma consisting of a high-frequency plasma are comprised; and the first cracking reaction zone and the second cracking reaction zone are partitioned by a cylindrical graphite wall surface, the direct current arc plasma is positioned at the inner side of the cylindrical graphite wall surface, and the high-frequency plasma is positioned at the outer side of the cylindrical graphite wall surface. According to the method, the pure nano conductive carbon can be obtained with high efficiency, and valuable combustible gas side products can also be obtained; and meanwhile, the device has good running stability and continuity, and can be used for treating large particle and block solid materials.

Description

technical field [0001] The invention relates to a method for efficiently utilizing waste solid organic compounds to prepare pure nano-scale low-resistance conductive carbon, in particular to a method for preparing nano-conductive carbon combined with mixed plasma technology. Conductive carbon has good electrical conductivity, and its finished products have conductive or antistatic effects, and are widely used in antistatic products and conductive products. Background technique [0002] Organic solid waste includes municipal solid waste, agricultural production waste and some industrial waste. With the rapid development of my country's economy and the improvement of people's living standards, the total amount of organic waste is also increasing day by day. A large amount of organic waste has caused serious ecological and environmental problems. How to efficiently recycle this massively increased resource is an urgent problem to be solved. [0003] Conductive carbon has the...

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Problems solved by technology

[0005] According to the pyrolysis process of solid organic waste in the plasma, the pyrolysis products are combustible gas products and solid products, and the solid products are generally composed of three parts: ash formed by the oxidation of inorganic substances, incompletely reacted solid materials, and secondary gas products. The products of pyrolysis, in which the product of secondary cracking of gas products is nano conductive carbon black, but it is difficult to recycle because it is mixed with the ash formed by the oxidation of inorganic substances and incompletely reacted solid materials

[0006] The technology of using DC arc plasma to treat solid organic waste can be found in Chinese patents 01129931 and 02250661, etc. The technology of using high-frequency plasma to treat solid organic waste can be found in Chinese patent 93102963, Chinese patent CN1297781C, Chinese patent ZL200810025606.5, etc. However, the above-mentioned patent method using plasma technology to treat solid organic waste focuses on the recovery of combustible gas products, and seldom mentions solid products; in addition, a Chinese patent on a method for preparing conductive carbon and hydrogen by plasma technology (201010570793.2) Disclosed is a low-cost, highly dispersible and highly conductive method for the preparation of conductive carbon and hydrogen, but it uses low-temperature cold plasma. Due to this limitation, it mainly uses gaseous or gasifiable hydrocarbons as raw materials , cannot directly use solid organic compounds

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