Low-nitrogen combustor with airflow in air-gas channel separated by corrugated plate and uniformly mixed alternately in same direction

Abstract

The invention relates to a low-nitrogen combustor with airflow in an air-gas channel separated by a corrugated plate and uniformly mixed alternately in the same direction. The low-nitrogen combustor can effectively realize quick, sufficient and uniform air-gas premixing and premixed combustion with high combustion intensity, high combustion temperature, high combustion efficiency and low nitrogen oxide content, and realize low-nitrogen pollution-free emission. According to the combustor, the airflow of air and gas is arranged alternately through the corrugated partition plate, mutual mixing of strands of the airflow is facilitated, uniform premixing of the airflow can be quickly completed in the air-gas premixing channel, and sufficient premixed combustion can be completed under the action of a combustion-supporting ceramic porous body. The combustor replaces various gas fuel combustion devices of an original industrial furnace, can realize quick, sufficient and uniform mixing of gas and air, and also can complete high-intensity and high-flow-rate premixed combustion by means of the combustion-supporting ceramic porous heat accumulator, so that the technical requirements for high efficiency, energy conservation, low nitrogen and environmental protection of the industrial furnace are met, and the combustor has great economic and social benefits.

Description

technical field [0001] The invention relates to a burner, especially suitable for a corrugated heat utilization equipment used in industrial furnaces such as hot blast stoves, boilers, heating furnaces, smelting furnaces, rotary kilns, tunnel kilns, and shuttle kilns for obtaining high-temperature flue gas from low calorific value gas. A low-nitrogen burner that separates the empty gas channel with a uniform flow of air in the same direction. Background technique [0002] Industrial furnaces are essential equipment for heat utilization in industrial production. At present, in the application field of industrial furnaces, under the conditions of burning different gases, it can not only obtain efficient and controllable complete combustion but also effectively reduce nitrogen in the combustion process. The generation of oxides (NOx) has become the main technical direction for combustion devices to achieve high efficiency, energy saving, environmental protection and safe use. ...

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Problems solved by technology

To this end, a low-nitrogen burner is provided in which corrugated plates separate the air gas channel and the air flow is uniformly mixed in the same direction. Premixed combustion, so that there is not enough oxygen concentration in the high-temperature flue gas generated, so as to avoid the oxidation reaction of nitrogen in the flue gas with it to form nitrogen oxides, high combustion intensity, high combustion temperature, High combustion efficiency and premixed combustion with low nitrogen oxide content make it no longer necessary to install flue gas denitrification (nitrification) devices after gas fuel combustion, and realize the problem of low nitrogen and pollution-free emissions, but there has been no public report so far

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