Upper and lower combined low-NOx single regenerative burner

Abstract

The invention relates to an upper and lower combined low-NOx single regenerative burner, and belongs to the technical field of single regenerative burning devices on heating furnaces and heat treatment furnaces. The burner comprises a porous burner brick, an air heat storage box, a heat storage body and a gas spray pipe, wherein the porous burner brick is made of a refractory castable the same asthe material of a furnace wall through integral casting forming, and the porous burner brick is mounted at the front end of the air heat storage box; the heat storage body is arranged in the air heatstorage box; the gas spray pipe is mounted at the upper part or the lower part of the air heat storage box, the front end of the air heat storage box extends into the furnace wall by 150 mm, and the air heat storage box is continuously welded with a furnace wall steel plate. The burner has the advantages that combustion-supporting air can be preheated to 1000 DEG C or higher, waste heat is recovered efficiently, and fuel consumption is reduced; meanwhile, lean oxygen combustion of fuel in a furnace is realized by adopting a lean oxygen combustion mechanism, generation of NOx in the combustionprocess is effectively inhibited in the combustion process, and emission of pollutants is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of heating gas combustion in heating furnaces and heat treatment furnaces, and in particular provides an upper and lower combined low NOx air single heat storage burner. Background technique [0002] The heat storage box of the traditional air single heat storage burner is placed in the furnace wall, and the air and flue gas are easy to short circuit, resulting in low heat storage efficiency and disordered control. The gas pipe of the traditional air single regenerative burner is installed in the center of the burner. The gas pipe is completely placed in a high-temperature environment, and the working condition is harsh. Generally, it needs to be replaced in 3 to 6 months, which affects production. Operation and maintenance are difficult and expensive. high. The burner brick of the traditional air single regenerative burner adopts a single large nozzle, which causes the air and gas to not be fully mixed, an...

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Problems solved by technology

[0003] The purpose of the present invention is to provide an upper and lower combined low NOx air single regenerative burner, which solves the defect that the gas pipe of the traditional air single regenerative burner is installed in the center of the burner.

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