Staged combustion paired independent combined type ultralow NOx dual-heat-storage burner

A staged combustion, combined technology, applied in the burner, combustion method, combustion type and other directions, can solve the problems of excessive emission, poor furnace temperature uniformity, insufficient mixing, etc., to suppress the production of NOx, avoid oxidation and decarbonization , the effect of prolonging the mixing time
CN113108284APending Publication Date: 2021-07-13BEIJING SHOUGANG INT ENG TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING SHOUGANG INT ENG TECH
Publication Date
2021-07-13

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Abstract

The invention discloses a staged combustion paired independent combined type ultralow NOx double-heat-storage burner, and belongs to the field of thermal engineering. The problems that according to an existing left-right staggered double-heat-storage burner, local thermal stress is prone to being generated, burner bricks are broken, and the service life is affected are mainly solved. Nozzles are formed in an air nozzle burner block and a gas nozzle burner block of the burner, the center lines of the nozzles and the center line of an air heat storage box, as well as the center lines of the nozzles and the center line of a gas heat storage box form spraying angles respectively, and the directions of the nozzles in the air nozzle burner block and the gas nozzle burner block are arranged in an inverted splayed shape. Generation of NOx in the combustion process is effectively restrained, oxidation and decarburization of steel billets in the heating process are avoided, oxidation burning loss is reduced, the heating quality of the steel billets is improved, a furnace wall refractory castable thermal expansion seam is conveniently reserved in a narrow space between the air gas regenerative chamber and the gas regenerative chamber, and the service life of the burner block is longer.
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Description

technical field

[0001] The invention relates to a staged combustion and pair-combined ultra-low NOx double regenerative burner for a heating furnace or a heat treatment furnace, belonging to the field of thermal engineering. Background technique

[0002] In the design and installation of existing double regenerative burners for heating furnaces, the rear end face of the burner brick is fixed on the front end of the double regenerative burner body, and the front face is flush with the refractory castable of the furnace wall, and refractory materials are poured around the burner brick , because the burner bricks are relatively large and the burners are closely arranged, only one column of anchor bricks can be arranged between the burner bricks. Considering that the furnace wall refractory castable expands at high temperature, it is necessary to install a 5-way anchor brick between the burner bricks. ~10mm thermal expansion joint, due to the partition effect of the thermal expa...

Claims

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