Low-NOx combustor super low in nitrogen oxide emission

A technology of nitrogen oxides and burners, which is applied in the direction of burners, gas fuel burners, combustion methods, etc., can solve the problems of large excess air coefficient, high flame height, and low thermal efficiency, so as to reduce the excess air coefficient and improve Effects of thermal efficiency and flame diameter reduction

Pending Publication Date: 2018-05-11
YANGZHOU GOLDSTAR TECH IND
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AI Technical Summary

Problems solved by technology

[0012] Existing low NO x The burner has a high flame height and is not compact, and the flame is e

Method used

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  • Low-NOx combustor super low in nitrogen oxide emission

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Embodiment Construction

[0045] see figure 1 , the invention relates to an ultra-low nitrogen oxide emission low NO x The burner includes a refractory brick 1, a flame-stabilizing plate 1.1, a flame-stabilizing step 1.2, an air gun 2, an air gun nozzle 2.1, a shell 3, a gas collecting pipe 4, an air inlet 5, a Venturi nozzle 6, an ejector nozzle 7, Injection gas pipe 8 , flue gas return pipe 9 , first flue gas return hole 10 , second flue gas return hole 11 and guide port 12 .

[0046] The air distribution system includes refractory bricks 1, shell 3 and air inlet 5, the fuel gas system includes gas collecting pipe 4 and air gun 2, and the flue gas recirculation system includes ejection air pipe 8, ejection gas nozzle 7, flue gas return pipe 9, Venturi nozzle6.

[0047]The upper part of the refractory brick 1 is a hollow flame-stabilizing step 1.2 with a stepped surface, and the lower part is a hollow cylinder. Several semicircular flame-stabilizing plates 1.1 are opened on the inner wall of the top...

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Abstract

The invention relates to a low-NOx combustor super low in nitrogen oxide emission. The low-NOx combustor super low in nitrogen oxide emission comprises a refractory brick, a shell, an air inlet, venturi nozzles, an injection gas pipe and a flue gas backflow pipe; the refractory brick comprises a steady flame step on the upper portion and a hollow column body on the lower portion; the inner wall ofthe top of the steady flame step is provided with a steady flame plate; a plurality of gas guns are arranged in the axial direction of the refractory brick; each gas gun comprises a gas gun sprayinghead with a small hole formed in the top; a first flue gas backflow hole and a second flue gas backflow hole are formed in the refractory brick; the side face of each gas gun spraying head is providedwith a small hole corresponding to the first flue gas backflow hole; the inner end of the first flue gas backflow hole is provided with a guiding port; the second flue gas backflow hole is communicated with the flue gas backflow pipe; the gas guns and the second flue gas backflow hole are arranged in a spaced manner; the venturi nozzles are arranged in the refractory brick in the axial direction;injecting gas spraying heads connected with the injecting gas pipe are arranged at the bottoms of the venturi nozzles; and the flue gas backflow pipe is connected with the venturi nozzles. The low-NOx combustor super low in nitrogen oxide emission is small in flame height, compact, small in air surplus coefficient and high in heat efficiency.

Description

technical field [0001] The invention relates to a burner, in particular to a low-NO burner with ultra-low nitrogen oxide emission x A burner belongs to the technical field of combustion equipment. Background technique [0002] In today's China, the pollution of nitrogen oxides to the environment has become an increasingly serious problem. Its main impact on the atmosphere is acid rain, and it also participates in the formation of floating dust in the air. NO x It is a general term for oxides. Nitrogen oxides are one of the important pollutants in the atmosphere. The main pollutants that pollute the atmosphere are NO and NO 2 . NO initially produced during fuel combustion x More than 90% is NO, and NO can easily react with oxygen in the air in the atmosphere to form NO 2 , so NO in the atmosphere x NO 2 form exists. Under UV light irradiation, NO 2 It will interact with carbon and oxygen compounds in the atmosphere to generate photochemical smog and ozone; the genera...

Claims

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Application Information

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IPC IPC(8): F23D14/08F23D14/58F23D14/64
CPCF23D14/08F23D14/58F23D14/64F23D2900/14002
Inventor 李文学周渊博贡程红刘正荣薛莹莹李平汤珂
Owner YANGZHOU GOLDSTAR TECH IND
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