A flue gas return burner

A burner and flue gas technology, applied in the direction of gas fuel burners, burners, combustion types, etc., can solve the problems of hindering gas flow and affecting the flame injection effect of the burner, so as to enhance the mixing effect and reduce the emission of nitrogen oxides. , the effect of mixing evenly

CN110805897BActive Publication Date: 2021-06-22浙江百特燃烧器有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-06-22

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Abstract

The present invention relates to the technical field of burners, and aims to provide a flue gas recirculation burner, which includes a furnace body and a combustion cylinder. An air inlet device is arranged outside the body and at the end; the furnace body is provided with a smoke exhaust pipe; An air inlet is provided at the bottom of the wind hood; a return pipe is provided on the exhaust pipe, and the return pipe is connected to the side wall of the air inlet hood, and the suction force of the fan is used to suck the air and smoke into the fan for reuse. The rotation of the blades fully mixes the air and flue gas, and discharges the mixed gas into the combustion cylinder, thereby achieving the effect of diluting the oxygen in the air and reducing the emission of nitrogen oxides; and the working efficiency of the fan will not be affected, while the combustion There is no need to set any additional mixing device in the cylinder, thus ensuring the jet combustion effect of the flame.
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Description

technical field

[0001] The invention relates to the technical field of burners, in particular to a flue gas recirculation burner. Background technique

[0002] In recent years, my country's economy has grown rapidly, energy consumption has increased significantly, and the resulting environmental pollution has become increasingly severe. At present, my country's environmental protection department has higher and higher requirements on the emission limits of pollutants generated by combustion. For this reason, reducing nitrogen oxide emissions is one of the main goals of current burner design.

[0003] At present, the Chinese patent document with the authorized announcement number CN205979772U in the prior art discloses an external circulation flue gas return type full premix burner, including a fan, a gas pipe, a premix chamber, a combustion head and an ignition device; the premix chamber There is a spiral plate in the middle, and the mixed gas is driven by the spiral rotat...

Examples

Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] This embodiment discloses a flue gas recirculation burner, such as figure 1 As shown, it includes a furnace body 1 and a combustion tube 2. One end of the combustion tube 2 penetrates into the furnace body 1 and a combustion port 21 for injecting flames is opened at the end, and the other end of the combustion tube 2 is located outside the furnace body 1 and An air intake device 3 and a gas valve group 4 are connected at the end. The gas valve group 4 is connected with a number of gas delivery pipes (not shown in the figure) in the combustion tube 2, through which the gas is injected, and the gas is sprayed into the furnace body 1 by the air inlet device 3, and the combustion tube 2 is still An ignition device (not shown in the figure) for igniting gas is provided, and a smoke exhaust pipe 11 extending vertically upwards is connected to the upper end ...