Ignition and stable combustion device for industrial gas burner

A technology of stabilizing combustion device and industrial gas, which is applied in combustion ignition, gas fuel burners, burners, etc., can solve the problem of insufficient ignition flame stability, and achieve the effect of reducing NOx

CN103267307BActive Publication Date: 2015-09-09SHANGHAI NUOTE FEIBO COMBUSTION EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-09-09

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Abstract

The invention relates to an ignition and combustion stabilizing device for an industrial gas combustor and belongs to the technical field of industrial gas combustors. The device aims at solving the technical problem that an ignition device of a high-power industrial gas combustor is instable and reducing NOx discharge. The ignition and combustion stabilizing device is characterized in that a central pipe comprises a central pipe inner pipe and a central pipe outer pipe. The central pipe inner pipe is arranged in the central pipe outer pipe, the central pipe inner pipe and the central pipe outer pipe are coaxially and symmetrically arranged, a gas inlet channel of a central annular gas injection device is arranged between the central pipe inner pipe and the central pipe outer piper, the upper end of the gas inlet channel is sealed by an annular gas channel cover, the inner peripheral side of the annular gas channel cover is fixedly connected with the upper end portion of the central pipe inner pipe, and a central annular gas nozzle inclined upwards from inside to outside is arranged at the connection position of the outer peripheral inclined end face of the annular gas channel cover and the inclined end face of the upper end portion of the central pipe outer pipe. The ignition and combustion stabilizing device has the advantages of improving the fuel rationing mode and being high in ignition success rate, stable in flame and low in NOx discharge quantity.
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Description

technical field

[0001] The invention relates to an ignition device for an industrial gas burner and a central stable combustion method thereof. The ignition device has high ignition success rate, stable flame and low NOx emission, and belongs to the technical field of industrial gas burners. Background technique

[0002] At present, with the large-scale use of domestic gas, the improvement of the West-East Gas Transmission Line, and the coal-to-gas heating projects in Beijing, Xinjiang, Tianjin and other places are being carried out in depth. In addition, all kinds of oilfield gas and industrial waste gas are also collected and used as industrial gas, which puts forward higher requirements on the performance of the burner. Gas burners are developing in the direction of high power, energy saving and stability.

[0003] Known high-power gas burners or low calorific value gas burners use the supply mode of low-speed combustion-supporting air in the center, and the ignition gun...

Examples

Embodiment Construction

[0014] figure 1 and figure 2 It is a schematic diagram of the structure of the present invention. As can be seen from the figure, an industrial gas burner ignition and stable combustion device of the present invention includes a central tube 8, a central tube 3, a swirler 2, an ignition gun 11 and a main gas gun 1, and is characterized in that: the central tube 8 includes Central tube inner tube 14 and central tube outer tube 15, said central tube inner tube 14 is placed in said central tube outer tube 15, and coaxially arranged, said central tube inner tube 14 and said central tube outer tube 15 are The gas inlet channel 7 of the central annular gas injection device, the upper end of the gas inlet channel 7 of the central annular gas injection device is blocked by an annular gas channel cover 9, and the inner periphery of the annular gas channel cover 9 is in contact with the The central tube inner tube 14 upper end is fixedly connected, by image 3 and Figure 4 It can ...