Fuel gas low-nitrogen burner

Abstract

The invention relates to a fuel gas low-nitrogen burner. The fuel gas low-nitrogen burner comprises a cylinder body, a fuel gas supply device, an ignition device and a swirl plate. The cylinder body is a hollow cylinder body. The rear end of the cylinder body is an air inlet. The front end of the cylinder body is an air outlet. The fuel gas supply device comprises a central fuel gas main pipe anda central fuel gas branch pipe. The central fuel gas main pipe is arranged in an inner cavity of the cylinder body and extends in the central axis direction of the cylinder body. The fuel gas low-nitrogen burner overcomes the defects that an auxiliary burning pipe (primary fuel spray gun and secondary fuel spray gun) of an existing burner is directly led out from an external fuel supply device, sothat the fluctuation of flow parameters of different burning regions can be easily large, and the effect of reducing the nitrogen oxide generation amount is influenced. The flow parameter fluctuationof different burning regions is greatly reduced through the specially designed central fuel gas branch pipe. The fuel gas low-nitrogen burner has the advantages of being simple in structure and capable of effectively reducing the nitrogen oxide generation amount.

Description

technical field [0001] The invention relates to a gas low-nitrogen burner, which is applied in the field of natural gas clean combustion equipment. Background technique [0002] Nitrogen oxides are an important source of air pollution and one of the important factors that cause smog and acid rain. At present, with the continuous improvement of environmental protection standards, the restrictions on nitrogen oxide emissions are becoming increasingly stringent. [0003] Natural gas burners use natural gas as fuel, and have been vigorously developed in recent years because of their clean, efficient and safe features. Through reasonable structural design, natural gas and air can be mixed evenly, and local high temperature can be reduced on the basis of ensuring high-efficiency combustion, thereby suppressing the formation of nitrogen oxides during the combustion process at the source and reducing nitrogen oxide emissions. [0004] There are many existing researches on the deve...

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Problems solved by technology

[0006] In order to overcome the fact that the auxiliary combustion tubes (primary fuel spray gun and secondary fuel spray gun) of the existing burner are directly drawn from the external fuel supply device, it is easy to cause large fluctuations in the flow parameters of different combustion areas, which in turn affects the reduction of the amount of nitrogen oxides produced.

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