Multi-stream, high-temperature and low-oxygen and low NOx horizontally combined type single heat storage burner

Abstract

The invention provides a multi-stream, high-temperature and low-oxygen and low NOx horizontally combined type single heat storage burner and belongs to the technical field of single heat storage combustion devices on heating furnaces and heat treatment furnaces. The burner comprises a porous burner block, an air heat storage box, a heat storage body and a coal gas spray pipe; the porous burner block and a furnace wall are formed by pouring the same refractory castable integrally; the porous burner block is mounted at the front end of the air heat storage box; the heat storage body is mounted in the air heat storage box; the coal gas spray pipe is mounted in the air heat storage box; the front end of the air heat storage box extends into the furnace wall for 150 mm and is welded to a furnace wall steel plate. The burner has the advantages as follows: combustion air can be preheated to 1000 DEG C or above, preheating efficient recycling is realized and fuel consumption is reduced. Meanwhile, a lean oxygen combustion mechanism is adopted, so that lean oxygen combustion of fuel in the furnace is realized, generation of NOx is effectively restrained in the combustion process and pollutant discharge is reduced greatly.

Description

technical field [0001] The invention belongs to the technical field of heating gas combustion in industrial furnaces and heat treatment furnaces, and in particular provides a multi-stream, high-temperature, low-oxygen, low-NOx left and right combined 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 ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-stream, high temperature, low oxygen, low NOx left and right combined single regenerative burner, which solves the defects in the structure of the gas pipe of the traditional air single regenerative burner installed in the center of the burner

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