A kind of preparation method of biomass tar cracking catalyst

Abstract

The invention discloses a preparation method of a biomass tar cracking catalyst. The catalyst is prepared from raw materials including iron oxide nanoparticles, octadecyl triethoxysilane, high-carbonorganic matter, rice husk, sodium metaaluminate, nickel nitrate and the like. An iron oxide magnetic material is inserted in preparation of the catalyst, recovery and reuse of the catalyst are facilitated, deposed carbon is diffused and mixed horizontally through combustion of the high-carbon organic matter, doping is more uniform and ordered, more catalytic active sites and adsorption sites can be reserved, meanwhile, mayenite is prepared to be compounded with a nickel-based catalyst, the carbon deposition resistance of the nickel-based catalyst is improved by use of free oxygen structures, the catalytic performance is enhanced, and efficient degradation of biomass tar is realized. The raw material source is wide, the preparation method is simple and high in applicability, the stability of the biomass gasification process can be substantially improved, the gasification cost can be reduced, and the method has higher economic value and environmental value and is suitable to be promotedand used by manufacturers.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a preparation method of a biomass tar cracking catalyst. Background technique [0002] In recent years, with the reduction of traditional fossil fuels and the intensification of environmental pollution, biomass energy with a wide range of sources and zero CO2 emissions has received more and more attention. Biomass gasification technology is one of the most effective and promising biomass energy utilization methods, but in the process of biomass gasification, not only combustible gas with high calorific value is produced, but also a by-product-tar, and the existence of tar It is easy to block the pipeline of the biomass gasification reaction device, affecting the normal operation of the system and reducing the gasification efficiency. Therefore, the removal of tar in the gasification process has always been a hot issue in the field of biomass gasification research. At present,...

AI Technical Summary

Problems solved by technology

Biomass gasification technology is one of the most effective and promising biomass energy utilization methods, but in the process of biomass gasification, not only combustible gas with high calorific value is produced, but also a by-product-tar, and the existence of tar It is easy to block the pipeline of the biomass gasification reaction device, affecting the normal operation of the system and reducing the gasification efficiency