Low emission high-power staged-combustion gas burner and gas collocation method thereof

A gas burner, segmented combustion technology, applied in the direction of combustion methods, gas fuel burners, burners, etc., to achieve stable combustion, not easy to defire, and suppress the formation of NOx

Active Publication Date: 2011-04-06
SHANGHAI NUOTE FEIBO COMBUSTION EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

and also produce large amounts of NOx

Method used

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  • Low emission high-power staged-combustion gas burner and gas collocation method thereof
  • Low emission high-power staged-combustion gas burner and gas collocation method thereof
  • Low emission high-power staged-combustion gas burner and gas collocation method thereof

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Embodiment Construction

[0018] Such as figure 1 As shown in the schematic diagram of the structure of the throat part of the burner body of the present invention, a low-emission high-power segmented combustion gas burner includes a burner body, a swirler 6 and a flame stabilizing plate 5, and is characterized in that: the burner body In the throat 1 of the throat, from the outside to the inside, a swirler 6, a flame stabilizing disk 5, a central tube 3, and an intermediate tube 4 are sequentially and coaxially arranged. The swirler inner ring 14 and the flame stabilizing disk 5 The outer periphery is connected, the inner periphery of the flame stabilizing plate 5 is connected with the outer surface of the central tube 3, the isodiameter is uniformly distributed on the flame stabilizing plate 5, and the gas gun 2 is fixed axially and fixedly arranged between the gas guns 2 There is a small gas hole A 10, the gas gun 2 is radially arranged with small gas holes B 15 staggered up and down toward the outer ...

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Abstract

The invention belongs to the technical field of industrial gas burner and relates to a low emission high-power staged-combustion gas burner. The staged-combustion gas burner is characterized in that a swirling machine, a flame stabilizing plate, a central canister and a middle pipe are coaxially arranged in the throat of the burner main body from outer to inner, wherein the flame stabilizing plate is provided with a gas gun which is axially fixed and has same uniformly distributed radial lines. The gas collocation method comprises the following steps: (1) collocating no gas in a direct air channel, in which is low-speed central cooling air, (2) mixing the high-speed swirling air entered from a swirling air channel with the gas jetted from a small gas hole B on the gas gun along the radialdirection till reaching to the semi-premixed state before emerging from the throat of the gas burner, and (3) face-to-face jetting the gas from a big gas hole on the top of the gas gun, the high-speed swirling air and the high-speed peripheral axial air flow so as to form non-premixing diffusion combustion. Because of the air, the staged gas branch supply, the premixing combustion and the non-premixing diffusion combustion, the combustion is uniform and NOx is prevented from being generated. The discharge amount of NOx of the gas burner is 70% lower than that of the common burner in the priorart.

Description

Technical field [0001] The invention relates to the technical field of high-power industrial gas burners, in particular to a low-emission high-power gas burner with low NOx emission, stable combustion and semi-premixed gas and air, and staged combustion, and a gas configuration method thereof. Background technique [0002] Gaseous fuels are hydrocarbons. Now most burners, especially those with a single high power (14MW) or more, adopt the diffusion combustion method (that is, the fuel is not mixed with combustion air before combustion). In my country, the research and development of burners with a single unit power above 24MW is still in an imperfect stage. The internal temperature of the diffusion combustion flame is quite high, and the air distribution is uneven. In this case, the hydrocarbon will decompose to produce solid carbon black, and even form black smoke, which reduces the combustion efficiency. The greater the burner power, the more serious this phenomenon. And also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/26
Inventor 肖江东徐志斌
Owner SHANGHAI NUOTE FEIBO COMBUSTION EQUIP CO LTD
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