Magnetic type recycling pyrolyzer for preparing biomass activated carbon

Abstract

The invention discloses a magnetic type recycling pyrolyzer for preparing biomass activated carbon. A circular pipeline with a rectangular cross section is utilized as a pyrolysis pipeline, a conveyor belt is paved on the bottom of the circular pipeline for transmitting biomass rice husks doped with an iron-based catalyst; the rice husks pass through a combustion chamber on the exterior of the pipeline so as to be pyrolyzed in a transmitting process, and then, gases in a pyrolysis product are pumped away by an aspirator pump, and then pass through a cyclone separator; the rest gases are mixed with air so as to be injected into the combustion chamber, and combusted in the combustion chamber, so that recycling of energy resources is realized. Solid products pass through a part with a magnet at the top end, so that the iron-based catalyst is recycled by virtue of the magnet, and the rest solids are baffled by virtue of a baffle plate, and then blown and dropped into a lower ash slot by virtue of a fan at the top end. The magnetic type recycling pyrolyzer for preparing biomass activated carbon is simple in structure and convenient to operate; the rice husk processing efficiency is improved by virtue of a solid circulating path, and the utilization efficiency of the energy resources is improved by virtue of a gas circulating path. And moreover, the cost is greatly lowered by recycling the catalyst.

Description

technical field [0001] The invention belongs to pyrolysis equipment, in particular to a magnetic circulation pyrolyzer for preparing biomass activated carbon. Background technique [0002] Rice husk is one of the important agricultural wastes, with an annual output of about 40 million tons in China alone. As a renewable biomass resource, rice husk is usually burned directly as fuel to provide heat, but the utilization grade is relatively low. Pyrolysis is one of the hot technologies in biomass research at present. Through pyrolysis, rice husks can be converted into high-grade combustible gas and activated carbon that is easy to store and transport and has high energy density, while producing combustible gases such as methane. [0003] Activated carbon is one of the important products of the activated carbon chemical industry. Its output accounts for about 3%-4% of the furnace coal. Its composition is extremely complex. In most cases, it is specially separated and purified b...

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