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Weak cyclone stagnation gas burner

A burner and stagnation technology, which is applied to gas fuel burners, burners, combustion methods, etc., can solve problems such as unstable combustion of extreme lean fuel, and achieve the effects of simple and reliable structure, improved life, and wide fuel adaptability.

Active Publication Date: 2010-09-29
TSINGHUA UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a weakly swirling stagnant gas burner to solve the problem of unstable burning of extremely lean fuel

Method used

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  • Weak cyclone stagnation gas burner
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Embodiment Construction

[0033] The present invention provides a weak-swirl stagnant gas burner, and the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] Such as figure 1 As shown, a DC center pipe 4 and a swirl device 3 are placed inside the burner, and a flow regulating hole network 2 is set at the premixed gas inlet 1 in front of the swirl device 3. Behind the DC center pipe 4 is a swirl development section 5 and Gas nozzle 7, a blunt body 6 is set at the gas nozzle 7; the premixed gas in the burner is divided into two channels, namely the swirl device 3 and the direct current center tube 4, and the mixed gas passes through the swirl development section 5 at the combustion outlet 7 diverges to form a weak swirl field, and forms a stagnant flame under the action of the blunt body 6, which plays a role in stabilizing the flame. The angle of gas nozzle 7 is 45 °.

[0035] The implementation of the swirl device 3 includ...

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Abstract

The invention belongs to the technical field of industrial combustion apparatus, and particularly relates to a weak cyclone stagnation gas burner. Two channels, namely a cyclone device and a direct flow central tube, for premixing gas are formed in the burner; the mixed gas passes through a cyclone development section and is diffused at a combustion outlet to form a weak cyclone field and form stagnation flames under the action of a blunt body arranged at a gas nozzle so as to play a role in stabilizing the flames. The burner can generate stable boosting flames, wherein stagnation points of free flames exist at the positions, on a central diffusion flow field of the gas nozzle, of which the average premixed gas speed and the turbulent flow combustion flame speed are equal to each other; and the extreme depleted fuel combustion makes NOX generated by the combustion less than 5 ppm, and the CO content in a flue gas be lowered to be less than 400 ppm. The weak cyclone stagnation gas burner has the advantages of wide fuel adaptability, simple and reliable structure, and suitability for combustion of industrial furnaces, reformers and gas turbines.

Description

technical field [0001] The invention belongs to the technical field of industrial combustion devices, in particular to an industrial furnace with low NO X Weak swirl stagnant gas burner with complete discharge and combustion characteristics. Background technique [0002] In today's world, there is a serious shortage of energy, and natural resources such as oil and natural gas may be exhausted for a few years. At the same time, the use of non-renewable energy such as oil and coal has a serious impact on the atmospheric environment and seriously damages the natural environment on which human beings depend. Therefore, efficient and clean utilization of energy is an effective way to solve existing energy and environmental problems. With the combustion and utilization of natural gas, petroleum liquefied gas and coal synthesis gas, the pollution of gas combustion, especially the reduction of NO X emission is an urgent task. [0003] In gas combustion, combustion stability is en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/02F23D14/26F23D14/70
Inventor 李水清卓建坤王俊晶张易阳姚强
Owner TSINGHUA UNIV
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