Boiler air-distribution combustion system and air-distribution combustion method

Abstract

The application relates to the energy field, and relates to a boiler air-distribution combustion system and an air-distribution combustion method. The boiler air-distribution combustion system comprises a fuel boiler and a blower; an air-distribution mechanism comprises a cylindrical fairing and an air duct used for Brown gas circulation, a gas outlet of the gas duct extends into the fairing from the rear part of the fairing, and a ventilation clearance is reserved between the air duct and fairing; the blower is arranged at the tail part of the fairing, and is communicated with the ventilation clearance; and the head part of the fairing extends into the fuel boiler from the lower part of the fuel boiler. The boiler air-distribution combustion method comprises the following steps: adjusting the pressure of the Brown gas, mixing the Brown gas with air to form mixed gas, adjusting the flowing state and pressure of the mixed gas, introducing the mixed gas into each wind chamber of the boiler, and performing air-distribution combustion with fuel. The boiler air-distribution combustion system and the air-distribution combustion method provided by the application can improve the combustion efficiency, further increase the temperature in the boiler, and enable more pollutants to be combusted or decomposed, so as to reduce the emission of the pollutants.

Description

technical field [0001] The invention relates to the field of energy, in particular to a boiler distribution firing system and a distribution firing method. Background technique [0002] Due to the relationship of energy structure in our country, coal, fuel oil, natural gas or other fuels are used as the heat source in most areas. However, as people pay more and more attention to environmental protection, the high pollution caused by coal-fired boilers is increasingly unacceptable by the society. [0003] In related technologies, coal-fired boilers generally use fuel and air for direct mixed combustion. The efficiency of this combustion method is low. On the one hand, the fuel cannot be fully burned, and many harmful substances such as carbon monoxide, dust particles, nitrogen oxides, and sulfur dioxide Gas and a lot of smoke and dust, on the other hand, make the temperature in the boiler lower, making it difficult to decompose some harmful substances. [0004] Therefore, t...

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Problems solved by technology

However, as people pay more and more attention to environmental protection, the high pollution caused by coal-fired boilers is becoming more and more unacceptable by the society.

[0003] In related technologies, coal-fired boilers generally use fuel and air for direct mixed combustion. The efficiency of this combustion method is low. Gas and a lot of smoke, on the other hand makes the temperature in the boiler lower, it is difficult to decompose some harmful substances

[0004] Therefore, the fuel boilers in related technologies can no longer meet the environmental protection requirements of today's society, and urgently need to be improved.

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