Rubbish gasification catalyst and preparation method thereof

Abstract

The invention provides a rubbish gasification catalyst. The rubbish gasification catalyst is mainly formed by means of loading an oxidation-reduction active site on a carrier, wherein the carrier is capable of providing mechanical support and transferring oxygen atoms or ions, the oxidation-reduction active site refers to a catalytic active component and is used for transferring oxygen ions, the carrier is capable of transferring the oxygen ions / atoms, CO2 serves as an oxidant and ground state carbon is gasified to form CO. The rubbish gasification catalyst has excellent catalytic activity; compared with traditional catalysts, the rubbish gasification catalyst is stronger in catalytic performance and more moderate in catalytic conditions. The invention also provides a preparation method of the rubbish gasification catalyst.

Description

technical field [0001] The invention relates to the field of garbage treatment, in particular to a garbage gasification catalyst, and also relates to a preparation method of the garbage gasification catalyst. Background technique [0002] According to literature reports, most of the catalysts used for gasification of garbage work in the environment of water vapor or air. For example, the American Exxon Company proposed the K 2 CO 3 As a catalyst, under the conditions of 3MPa and 700°C, using water vapor as a gasification agent, a coal pressurized fluidized bed catalytic gasification process for the purpose of producing artificial natural gas was developed, and Chinese patent CN103301865A also made further improvements on this . Carbon dioxide is a weaker oxidizing agent than water vapour. Due to its own structural stability, carbon dioxide is very chemically inert. Therefore, the catalytic activity of the existing garbage gasification catalysts will be greatly reduced un...

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Problems solved by technology

However, this also creates a problem that it is difficult to completely recycle the catalyst due to the strong interaction (such as chemical bonds) with the carbon-based solid reactant particle residue after the gasification reaction, which greatly reduces the recycling rate of the catalyst and causes a large amount of catalyst usage. increased, resulting in a significant increase in the cost of waste gasification

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