Ultra-low NOx emission heavy-load boiler gas burner

Abstract

The invention discloses an ultra-low NOx emission heavy-load boiler gas burner. The ultra-low NOx emission heavy-load boiler gas burner comprises a brazier brick, a cylinder body, a louver air adjusting mechanism, a control part, an up-down double-swirling flow plate assembly, an air box sealing structure assembly, an outer ring type gas bag gun part, an inner ring type gas bag gun part, an eternal fire assembly, a flame inspection assembly and a fire observation hole. According to the ultra-low NOx emission heavy-load boiler gas burner disclosed by the invention, low NOx burning emission is realized, the special multi-layered brazier brick is designed, and a plurality of spraying holes having different angles and different sizes are designed on an outer ring shaped gun; a plurality of inner ring shaped gun rod are designed into different heights and different spraying holes and angles; the air passes through the up-down double-swirling flow plate assembly to so as enable the air entering into a furnace hearth to form strong swirling flow air; fuel gas is degraded in multiple layers and is then fully mixed with the swirling flow air, so that a space of the furnace hearth is utilized to a maximum limit, and the fuel gas can be burned in a whole burning chamber as much as possible, and thus, heat load of each part of the furnace hearth is uniform, and the flame average temperature and the peak value temperature are reduced, so that emission of NOx is reduced.

Description

technical field [0001] The invention belongs to the field of petrochemical burners, in particular to a bottom-burning type, side-burning type, blue circular vortex flame, fueled by natural gas, catalytic dry gas, and self-produced dry gas with ultra-low NOx emission and large load Boiler gas burner. Background technique [0002] At present, a large number of petrochemical boilers and power plant boiler burners are old-fashioned oil-gas co-firing burners, and the flue gas emissions seriously exceed the standard. The "Petroleum Refining Industry Pollutant Discharge Standard" (GB 31570-2015) issued by the State Environmental Protection Administration ) Regulations 2015-07-01 came into effect, which put forward higher requirements for flue gas emissions, so it is imminent to develop a new generation of ultra-low NOx emission large-load boiler gas burners. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a fully autom...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a fully automatic control, special brazier brick design, use of upper and lower double swirl components, and louver air regulating mechanism in view of the above-mentioned problem of higher requirements for smoke emissions in the prior art. , Bellows sealing structure components to reduce NOx emissions ultra-low NOx emissions heavy load boiler gas burner

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