Air and steam gasification downdraft gasified combustion boiler with catalyst internally arranged

Abstract

The invention relates to an air and steam gasification downdraft gasified combustion boiler with catalyst internally arranged, which comprises a combustion heat transferring part, a gasification boiler part and a gasification medium generating part. The combustion heat transferring part is arranged above the gasification boiler part, a stuffing port is arranged on the upper portion of a boiler body of the gasification boiler part, a gasification igniting port is arranged on the lower portion of the boiler body, and a gasification furnace inner tube, a catalyst chamber and a gasification gas extraction tube are arranged in the boiler body. The gasification medium generating part is that: an atomization water tank is communicated with a gasification medium mixing tank through a guide tube, and the gasification medium mixing tank is communicated with the gasification furnace inner tube. The air and steam gasification downdraft gasified combustion boiler adopts the secondary combustion mode of firstly gasification and then combustion, reduces tar content in biomass pyrolyzation gas through the catalyst in the catalyst chamber, improves shares of combustible micro-molecule gases, reduces phenomena of smoking of black smoke, and improves combustion efficiency of existing biomass boilers.

Description

technical field [0001] The invention relates to a biomass particle gasification combustion boiler, in particular to an air steam gasification downdraft gasification combustion boiler with a built-in catalyst, which belongs to the technical field of combustion equipment. Background technique [0002] Biomass energy is the energy that fixes the energy of solar radiation in the form of biomass through the photosynthesis of green plants. Biomass energy, as a renewable energy source, can partially alleviate human dependence on other non-renewable resources. When a coal-fired boiler is used to burn biomass fuel, due to the high volatile content of the biomass fuel and the fast pyrolysis rate, the diffusion rate of oxygen in the furnace is much lower than the combustion rate of volatile components, resulting in volatile decomposition into non-combustible carbon. Black particles, resulting in black smoke, and the ash melting point of biomass fuel is low, easy to slagging, corrosio...

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Problems solved by technology

[0004] The present invention aims at the problems existing in the above-mentioned prior art, and provides an air steam gasification downdraft gasification combustion boiler with a built-in catalyst. way; solves the problems of black smoke, high dust content, and many tar accumulations in the prior art, and the invention can easily control the amount of steam consumed by gasification

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