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Ultra-low-nitrogen gas burner

A gas burner, ultra-low nitrogen technology, applied in gas fuel burners, burners, combustion methods, etc., can solve problems such as difficulty in meeting environmental protection standards, and achieve the effects of wide practicability, convenient use and simple structure

Pending Publication Date: 2018-01-05
XUZHOU KERONG ENVIRONMENTAL RESOURCES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult for the ultra-low nitrogen technology on the market to meet the requirements of the relevant national environmental protection standards without reducing the boiler efficiency.

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the embodiment in the accompanying drawings:

[0018] The ultra-low nitrogen gas burner of the present invention is mainly composed of ejection nozzle 1, air ejector 2, combustion-supporting air channel 3, jet nozzle device 4, mixing swirl device 5, oxygen-enriched combustion head 6, and reduction combustion head 7 The fuel is divided into two grades, which are respectively primary fuel A and secondary fuel B, and the total combustion air C is also divided into two grades, which are respectively primary combustion air E and secondary combustion air F. The injection nozzle 1 is arranged at the center of the air ejector 2, and adopts a sonic jet; the primary fuel A carries out a high-speed jet through the injection nozzle 1, and injects a large amount of air. The air ejector 2 is a circular uniform air inlet, has a long mixing section capable of fully mixing air and gas, and is equipped with a Ventu...

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Abstract

An ultra-low-nitrogen gas burner is suitable for ultra-low-nitrogen gas burners of power plant boilers, industrial boilers and petrochemical heating furnaces. The ultra-low-nitrogen gas burner comprises an injecting nozzle, an air injector, a combustion-supporting air channel, a jet flow nozzle device, a mixing rotational flow device, an oxygen-rich combustion head and a reducing combustion head;the injecting nozzle is arranged at the center of the air injector; the air injector is arranged in the combustion-supporting air channel, and the front of the air injector penetrates the oxygen-richcombustion head and is connected with the reducing combustion head; the jet flow nozzle device is arranged on the outer side of the air injector in the combustion-supporting air channel, and is concentrically arranged with the air injector; the mixing rotational flow device is arranged on the jet flow nozzle device in a sleeving manner, is concentric with the jet flow nozzle device, and can move in the axial direction of the jet flow nozzle device; and a cylindrical structure is adopted for the oxygen-rich combustion head and the reducing combustion head, and the oxygen-rich combustion head and the reducing combustion head are concentrically arranged, and jointly form a combustion head of the ultra-low-nitrogen gas burner. Ultra-low nitrogen emission is achieved while the excess air coefficient is not added and the boiler efficiency is not lowered. The ultra-low-nitrogen gas burner is simple in structure and convenient to use.

Description

technical field [0001] The invention relates to a burner, especially an ultra-low nitrogen gas burner suitable for power plant boilers, industrial boilers and petrochemical heating furnaces. Background technique [0002] Smog has brought great troubles to human life and work. One of the main culprits of air pollution is nitrogen oxides. It is urgent to control nitrogen oxides. The state proposes clean combustion to create a blue sky, and has formulated relevant environmental protection standards, and has increasingly stringent restrictions on nitrogen oxide emissions. [0003] According to relevant data research, NOx produced by gas combustion is mainly divided into thermal NOx, rapid NOx and fuel NOx. The formation of NOx is mainly due to the nitrogen element in the fuel, local high temperature, flue gas residence time, oxygen-enriched combustion and other reasons. It is difficult for the ultra-low nitrogen technology on the market to meet the requirements of the relevant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/04F23D14/32F23D14/48F23D14/60F23D14/64
CPCY02E20/34
Inventor 高克迎邱康平程怀志宋方真贾刚建
Owner XUZHOU KERONG ENVIRONMENTAL RESOURCES CO LTD
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