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Gas burner with reinforced smoke internal circulation

A gas burner and internal circulation technology, applied in gas fuel burners, flue gas combustion, burners, etc., can solve the problems of NOx effect not as good as external circulation of flue gas, limited flue gas volume, and inability of flue gas to enter the interior of the flame. , to achieve the effect of reducing the concentration, reducing the combustion temperature, and reducing the oxygen concentration

Pending Publication Date: 2020-08-11
江苏蓝创环保科技有限公司
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AI Technical Summary

Problems solved by technology

Conventional flue gas internal circulation uses the entrainment effect of the flame to mix the flue gas in the furnace with the flame, but the amount of flue gas entrained in this way is limited, and the flue gas cannot enter the flame, and the effect of reducing NOx is not as good as that of the flue gas external circulation

Method used

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  • Gas burner with reinforced smoke internal circulation
  • Gas burner with reinforced smoke internal circulation

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing.

[0019] The enhanced flue gas internal circulation gas burner of the present invention mainly includes: a primary fuel nozzle 1 located on the central axis of the burner, a primary fuel conditioning processor 2 behind the primary fuel nozzle 1, and a primary fuel conditioning processor 2 The inner circulation smoke chamber 3 at the entrance, the primary air passage 4 on the periphery of the primary fuel conditioning processor 2, the secondary air passage 5 on the periphery of the primary air passage 4, and the secondary fuel gas chamber 6 on the periphery of the secondary air passage 5 And the secondary air spout 8 at the outlet of the secondary fuel nozzle 7, the secondary air passage 5, the secondary air spout 9 at the rear of the secondary air spout 8, the primary air spout 10 at the exit of the primary air passage 4, The primary fuel conditioning nozzle 11 at the outlet ...

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Abstract

The invention provides a gas burner with reinforced smoke internal circulation. Through the negative pressure formed under the injection action of high-speed jet of fuel and combustion air, furnace smoke is sucked into the gas burner to be mixed with the fuel and the combustion air respectively. By mixing the smoke with the fuel and tempering the fuel, the heat value of the fuel is reduced; and bymixing the smoke with the combustion air and tempering the combustion air, the oxygen concentration of the combustion air is reduced. By mixing the tempered fuel with the tempered combustion air forcombustion, the combustion temperature is effectively reduced, the oxygen concentration is reduced, the concentration of CH ionic groups is reduced, and the aim of low nitrogen emission is realized.

Description

technical field [0001] The invention belongs to boiler combustion equipment, and in particular relates to a gas burner for strengthening internal circulation of flue gas. Background technique [0002] The NOx of high-calorific value gas-fired boilers is mainly thermal NOx and rapid NOx. The main factor affecting the formation of thermal NOx is combustion temperature, and the main factor affecting the formation of rapid NOx is the concentration of CH ion clusters. At present, high calorific value gas burners mainly reduce NOx by means of staged combustion and flue gas external circulation. The use of flue gas external circulation requires the addition of flue gas external circulation pipelines, flue gas flow meters, flue gas regulating valves and other equipment, and The external circulation of flue gas will cause the mixed air entering the combustion-supporting fan to contain liquid water, which will damage the impeller of the combustion-supporting fan and easily cause vibra...

Claims

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Application Information

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IPC IPC(8): F23D14/22F23L9/00F23C9/00
CPCF23C9/00F23C2202/20F23C2202/30F23D14/22F23L9/00
Inventor 高克迎孙昌栋吕兆荣郭艳坤
Owner 江苏蓝创环保科技有限公司
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