Low NOx heat storage flat flame burner and combustion control method

Abstract

The invention belongs to the technical field of industrial burners, and particularly relates to a low NOx heat storage flat flame burner and a combustion control method, which are applied to industrial furnaces in iron and steel, non-ferrous metal, machines, ceramics and other industries. The low NOx heat storage flat flame burner comprises a burner head, a burner block and a gas pipe, the burnerhead is installed on the burner block, and the gas pipe is installed on the burner head and matched with the burner block. The low NOx heat storage flat flame burner is structurally characterized in that the burner block includes a burner block cavity and a burner block shell, the burner block cavity is arranged in the burner block shell and comprises an outlet section and an inlet section, the inlet section communicates with the outlet section, the burner head is installed on the inlet section, a reflowing cavity is formed between the burner head and the inlet section, the burner block is provided with reflowing holes, and the reflowing holes communicate with the reflowing cavity. Internal reflowing of the burner is carried out by means of the characteristics of the burner, the local hightemperature can be effectively reduced, the flame temperature is reduced, and NOx emissions are remarkably reduced.

Description

technical field [0001] The invention belongs to the technical field of industrial burners (commonly known as "burners"), and in particular relates to a low NOx regenerative flat flame burner and a combustion control method, which are suitable for industrial furnaces in industries such as iron and steel, non-ferrous metals, machinery, ceramics, etc. kiln. Background technique [0002] At present, under the general environment of domestic and foreign restrictions on the emission of air pollutants from industrial furnaces, especially the restrictions on the concentration of NOx emissions are becoming more and more stringent, the design of burners, the core equipment used in industrial furnaces, is facing challenges, and the heat storage level Flame burners have strong radiation ability and remarkable energy-saving effect, but NOx emissions have remained high. The inventors and other burner companies have been looking for the best design solution to reduce NOx emissions. [000...

AI Technical Summary

Problems solved by technology

For example, the patent with the authorized announcement number CN205957172U: the burner uses external forced flue gas recirculation, although it reduces NOx emissions, but the system is complicated, the cost is high, the air-fuel ratio control is difficult, and there are still defects in use, and ultra-low NOx has not been achieved. emissions, so it is necessary to improve and optimize the existing burners and combustion methods

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