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Method and treatment system for reducing nitrogen oxides by using incineration of refuse landfill gas

A technology for landfill gas and treatment system, which is applied in the field of landfill gas combustion and reburning, can solve the problems of narrow effective reaction temperature range, high operating cost of flue gas treatment, and difficulty in popularization and use, so as to reduce the burden of purification treatment and facilitate the Effective provision and cost-saving effect

Inactive Publication Date: 2012-12-26
福建省丰泉环保控股有限公司
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Problems solved by technology

[0004] Although Selective Non-Catalytic Reduction (SNCR) and Selective Catalytic Reduction (SCR) flue gas treatment technologies can greatly reduce NOx emissions, these technologies require post-treatment of combusted flue gas. Additional Equipment and Space
In addition, SCR technology requires expensive catalysts, that is, the operation cost of flue gas treatment is very high; while the effective reaction temperature range of SNCR technology is narrow and difficult to control, so SNCR and SCR flue gas treatment technologies are difficult to promote and use in my country

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  • Method and treatment system for reducing nitrogen oxides by using incineration of refuse landfill gas

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Embodiment Construction

[0018] Now describe the embodiment of the patent of the present invention in detail in conjunction with the accompanying drawings: as figure 1 As shown, a treatment system for reducing nitrogen oxides by using landfill gas incineration, the treatment system is mainly composed of a landfill 1, an air duct 2, a fan 3, another air duct 2′, and an incinerator 4 connected in sequence . combine figure 1 , 2 As shown, the working method of the system includes the following steps: (1), the landfill gas 10 of the landfill 1 is drawn out by the fan 3 through the air duct 2, and then sent into the garbage incinerator 4 through another air duct 2′ (2), will enter one road landfill gas spout of incinerator 4 and be located at the combustion section 41 of incinerator, landfill gas 10 and incinerator primary air 20 react incineration at the bottom of incinerator, both can improve the rubbish burning in the furnace Calorific value, raising the temperature of the furnace can also play the r...

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Abstract

The invention relates to a refuse landfill gas burning and re-burning technology, and in particular relates to a method and a treatment system for reducing nitrogen oxides by using incineration of refuse landfill gas. The treatment system mainly consists of a refuse landfill, an air pipe, a fan, the other air pipe and an incinerator connected sequentially; during working, the landfill gas of the refuse landfill is led out by the fan through the air pipe, delivered to the incinerator through the other air pipe, and burnt and re-burnt by the incinerator; and the landfill gas is used for reducing NOx in the incinerator, so that the NOx content of the flue gas exhausted by the incinerator is effectively reduced. The method and the system solve the problem of air pollution caused by stench of the refuse landfill and the problem of NOx concentration in the flue gas exhausted by the refuse incinerator, and are particularly suitable for a newly built refuse power plant, particularly a refuse burning power plant which is built nearby the refuse landfill and can provide the landfill gas more conveniently and effectively.

Description

technical field [0001] The present invention relates to a kind of waste landfill gas combustion and reburning technology, particularly refers to a kind of utilization landfill gas incineration to reduce nitrogen oxides (chemical formula: NOx (hereinafter all use this chemical formula), such as NO 2 , NO, N 2 O etc.) method and processing system thereof. Background technique [0002] Due to the late development of waste cleaning technology in my country, landfill was the main method in the past. There are a huge number of landfills in our country, and these landfills will discharge a large amount of odorous gas every day, the most important combustible gas is methane (CH 4 ), if it can be used effectively, it will be of great significance to the environment, ecology and economy. [0003] The main harmful gas in the furnace and exhaust flue gas of the waste incinerator is NOx. NOx is one of the main air pollutants. It not only endangers human health and destroys the atmosp...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/06
Inventor 陈泽峰曾纪进陈国艳
Owner 福建省丰泉环保控股有限公司
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