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Premixing type low-NOx burner

A pre-mixed and pre-mixed technology, applied in the direction of burner, combustion method, combustion type, etc., can solve the problem of inability to achieve low nitrogen emissions in the combustion system, and achieve the effect of reducing emissions and NOx emissions.

Pending Publication Date: 2021-03-12
四川铭能科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In some high-temperature roasting industries, it is necessary to generate high-temperature air (greater than 850°C) for high-temperature roasting of specific materials. Due to the high O2 concentration in the furnace, the conventional combustion organization methods such as gas / air classification and switching gas / air channels cannot realize the combustion system. For this application, this solution provides a premixed low NOx emission burner

Method used

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  • Premixing type low-NOx burner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 and 3 As shown, a premixed low NOx burner includes a burner body 18, the combustion part of the burner body 18 is clamped in the matching installation cavity in the burner brick 15, and the inner cavity of the burner body 18 There is a gas channel 5 for external gas to enter, and the end of the gas channel 5 is provided with a burner nozzle 4, and the burner nozzle 4 is provided with an ignition rod 3 extending to the outside of the burner body 18, which is used to ignite the burner nozzle 4. Gas / air mixture, the top of the burner body 18 is provided with an air inlet 14 communicating with the inner cavity of the burner body 18, the inner cavity of the burner body 18 is divided into a first cavity 12 and a second cavity 13, the burner The nozzle 4 and part of the gas channel 5 are set in the first cavity 12, and the air inlet 14 is installed with an air reversing butterfly valve 1 for controlling the isolation or conduction of the first cavity 12 and t...

Embodiment 2

[0025] Such as figure 1 As shown, the end of the gas passage 5 away from the burner brick 15 extends to the outside of the burner body 18, and the gas passage 5 outside the burner body 18 is connected to the gas ring pipe 10 through the gas main pipe 8, and the gas main pipe 8 is provided with a gas inlet 16, a first gas shut-off valve 6 is provided on the gas pipeline between the gas inlet 16 and the gas passage 5, and a second gas shut-off valve 6 is provided on the gas pipeline between the gas inlet 16 and the gas ring pipe 10. valve 7.

Embodiment 3

[0027] The connection position between the second cavity 13 and the premixing channel 17 is sealed. Prevent air and gas in the premixing channel 17 from leaking to the outside.

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Abstract

The invention discloses a premixing type low-NOx burner. The premixing type low-NOx burner comprises a burner body, a combustion part of the burner body is arranged in a burner block, an inner cavityof the burner body is provided with a fuel gas channel used for allowing external fuel gas to enter, a burner nozzle is arranged at the tail end of the fuel gas channel, an ignition rod extending outof the burner body is arranged on the burner nozzle, an air inlet communicating with the inner cavity of the burner body is formed in the burner body, the inner cavity of the burner body is divided into a first cavity body and a second cavity body, a control part used for controlling the first cavity body or the second cavity body to be separated from the atmosphere or communicate with the atmosphere is arranged at the air inlet, multiple premixing channels communicating with a hearth and the second cavity body are annularly distributed on the burner block, premixers are arranged in the premixing channels, a fuel gas ring pipe connected to the fuel gas channel is arranged in the circumferential direction of the burner body, connecting pipes corresponding to the premixing channels are arranged on the fuel gas ring pipe, and one ends of the connecting pipes extend into the premixing channels. According to the scheme of the premixing type low-NOx burner, emission of NOx is effectively reduced, and the purposes of saving energy and protecting the environment are achieved.

Description

technical field [0001] The invention relates to the technical field of burners, in particular to a premixed low NOx burner. Background technique [0002] In some high-temperature roasting industries, it is necessary to generate high-temperature air (greater than 850°C) for high-temperature roasting of specific materials. Due to the high O2 concentration in the furnace, the conventional combustion organization methods such as gas / air classification and switching gas / air channels cannot realize the combustion system. For this application, this solution provides a premixed low NOx emission burner. Contents of the invention [0003] The purpose of the present invention is to provide a premixed low NOx burner, which is used to effectively reduce NOx emissions and meet the requirements of energy saving and environmental protection. [0004] In order to solve the problems of the technologies described above, the present invention adopts the following solutions: [0005] A premi...

Claims

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Application Information

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IPC IPC(8): F23D14/48F23D14/02F23D14/62F23D14/60
CPCF23D14/02F23D14/48F23D14/60F23D14/62
Inventor 张麒麟熊昌宇孙笔润陈恪彬
Owner 四川铭能科技开发有限公司
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