Single heat accumulating type denitration burner

Abstract

The invention provides a single regenerative denitrification burner, comprising: an air distribution port, a low temperature honeycomb heat storage chamber, a denitrification honeycomb heat storage chamber, a high temperature honeycomb heat storage chamber, an empty coal mixing chamber, corundum block bricks and a combustion air device , not only integrates the denitrification function into the regenerative burner, but also eliminates the need for the traditional regenerative burner to set up an ammonia zone and ammonia injection AIG device for denitrification treatment, simplifies the structure of the device, and can be adapted to specific sites with limited space Moreover, it can effectively reduce the content of nitrogen oxides in the flue gas produced by traditional regenerative burners, and the denitrification efficiency can reach about 75%. In addition, the device can effectively reduce the exhaust gas temperature and improve the utilization rate of flue gas waste heat recovery , has a series of advantages such as simple structure, convenient operation, low operating cost, high efficiency and energy saving, environmental protection, high heat storage and denitrification efficiency.

Description

technical field [0001] The invention belongs to the technical field of gas heat storage and denitrification combustion, and in particular relates to a single heat storage denitration burner, which is suitable for the combustion technology fields of metallurgy, machinery, environmental protection and other industries. Background technique [0002] Regenerative combustion technology, also known as high-temperature air combustion technology, is one of the most widely used energy-saving and environmentally friendly combustion technologies in industrial furnaces at the present stage, but there are still some difficult problems in this technology. The nature of nitrogen oxides is unavoidable during its combustion process. In order to solve the problem of nitrogen oxide emissions, the nitrogen oxide emissions of high-temperature air combustion technology have been reduced to the limit by changing the flame organization or changing the burner structure. state. [0003] At present, ...

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Problems solved by technology

[0004] In the document whose patent application publication number is CN104791777 A, a kind of gas self-circulation is used to reduce NO X The combustion method, which achieves low NO by utilizing the flue gas discharged from the furnace and recirculating it back to the system X Combustion, that is, extracting a part of the flue gas discharged from the heat storage system to dilute the combustion air and (or) gas, reduce the concentration of air and (or) gas, and achieve high temperature and oxygen-lean combustion conditions before the gas enters the burner, but adopt Flue gas recirculation combustion, when the flue gas circulation rate increases, the combustion will be unstable, and the heat loss of incomplete combustion will increase with the increase of the flue gas circulation rate. , increasing the investment and site, and increasing the economic cost

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