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Biomass gasifying burning boiler

A biomass and gasifier technology, used in combustion equipment, granular/powder fuel gasification, fuel supply, etc., can solve the problems of low combustion temperature, alkali metal corrosion, incomplete combustion, etc.

Inactive Publication Date: 2013-07-24
HEFEI DEBO BIOENERGY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a biomass gasification combustion boiler, which can separate the biomass gasification process from the gas combustion process, and the gas burned in the furnace is high-quality gas with low ash content, which solves the problem of low combustion temperature of existing biomass boilers , incomplete combustion, corrosion of alkali metals, dust on the heated area and other technical problems

Method used

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  • Biomass gasifying burning boiler

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Effect test

Embodiment 1

[0018] The riser 2 has a height of 16m and a diameter of 2m, the gasification agent is air, and the biomass raw material is rice husk.

[0019] The biomass rice husk fed through the feed port 1 and the air fed from the bottom undergo pyrolysis and gasification reactions in the riser 2, and the gas generated is dedusted by the cyclone separator 3 and the cyclone dust collector 5 and then sent to the furnace 6 and enters the furnace The gas of 6 is a high-quality gas with low dust content, and the combustion of gas and air in the furnace 6 provides a heat source for the heating surface 7 . There is no slagging in the furnace 6, no ash accumulation on the heating surface 7, and no tar pollution in the system.

Embodiment 2

[0021] The riser 2 is 20m in height and 3m in diameter, the gasification agent is air, and the biomass raw material is rice husk.

[0022] The biomass rice husk fed through the feeding port 1 and the air introduced from the bottom undergo pyrolysis and gasification reactions in the riser 2, and the gas generated is dedusted by the cyclone separator 3 and the cyclone dust collector 5 and then sent to the furnace 6 and enters the furnace The gas in 6 is high-quality gas with low dust content, the air is preheated to 150°C, and the gas and air burn in the furnace 6 to provide a heat source for the heating surface 7. There is no slagging in the furnace 6, no ash accumulation on the heating surface 7, and no tar pollution in the system.

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Abstract

The invention discloses a biomass gasifying burning boiler. The working process of the biomass gasifying burning boiler comprises a biomass gasifying stage and a fuel gas burning stage; at the gasifying stage, pyrolysis and gasification of biomass are realized by adopting a circular fluidized bed gasifying process, incompletely-reacted carbon residues are separated from generated fuel gas through a cyclone separator, and the carbon residue return to the gasifying furnace through a return feeder for gasifying once again; and at the burning stage, the separated fuel gas is dedusted through a cyclone deduster, is fed into a hearth, and is mixed with the air for burning to provide a heat source for a heated surface. According to the biomass gasifying burning boiler designed by adopting the process structure, a biomass gasifying process and the burning process of the fuel gas are separated, and fuel gas entering the hearth is high-quality fuel gas with low dust content, so that the technical problems of low burning temperature, incomplete burning, corrosion of alkali metals, dust accumulation on heated area and the like existing in the conventional biomass boiler are solved.

Description

technical field [0001] The invention relates to the technical field of biomass boilers, in particular to a biomass gasification combustion boiler. Background technique [0002] my country is facing serious energy supply and environmental problems brought about by its use, and the task of saving energy, reducing emissions and developing green energy is arduous. With the scarcity of fossil fuels and the soaring prices of coal, oil and natural gas, the energy problem will definitely bring huge pressure to my country's economic and social development. question. [0003] Biomass gasification technology converts biomass resources into high-grade energy for utilization, which plays an important role in alleviating energy shortage and improving the ecological environment. Most of the existing biomass boilers are direct-fired boilers. Direct-fired boilers often have technical problems such as low combustion temperature, incomplete combustion, alkali metal corrosion, and dust on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K5/00C10J3/56C10J3/84
Inventor 张守军鲁万宝赵成武
Owner HEFEI DEBO BIOENERGY SCI & TECH
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