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Staged oxygen-enriched flameless combustion gas burner and its control method

A technology of flameless combustion and control method, applied in the direction of combustion method, burner, combustion type, etc., can solve the problems of increased oxidation and burning loss of steel billet during heating time, steel billet can not be "burned through, temperature difference stress of section, etc., to eliminate oxidation. Effects of increased burn loss, good atmosphere regulation, and enhanced reliability

Active Publication Date: 2017-02-01
WISDRI WUHAN WIS IND FURNACE
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  • Claims
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AI Technical Summary

Problems solved by technology

Excessively high temperature, oxidizing atmosphere and too long heating time will lead to aggravated oxidation and burning of the billet; while the furnace temperature is too low, the billet will not be "burned through", resulting in cross-sectional temperature difference stress and increasing the difficulty of rolling

Method used

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  • Staged oxygen-enriched flameless combustion gas burner and its control method
  • Staged oxygen-enriched flameless combustion gas burner and its control method
  • Staged oxygen-enriched flameless combustion gas burner and its control method

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Embodiment Construction

[0031] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] It should be noted that, in the description of the present invention, the terms "horizontal", "vertical", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, or operate in a particular orientation, and thus should not be construed as limiting the invention.

[0033] The invention proposes a graded oxygen-enriched flameless combustion gas burner.

[0034] refer to ...

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Abstract

The invention discloses a grading oxygen-enriched flameless combustion gas burner which comprises a burner shell, an air distribution plate, a pre-combustion chamber, secondary air spray pipes and a fuel spray pipe. The wall of a heating furnace is provided with a channel penetrating through the wall, the burner shell is arranged on one side of the channel, the pre-combustion chamber is formed in space in the channel, the burner shell is provided with a combustion-supporting air channel, the fuel spray pipe is provided with a fuel channel, the air distribution plate is provided with a primary air inlet and a fuel inlet, the secondary air spray pipes are arranged and provided with secondary air channels used for introducing oxygen-enriched air or air into a hearth of the heating furnace, the secondary air spray pipes penetrate through the wall of the heating furnace, and the secondary air channels are communicated with the hearth of the heating furnace. The grading oxygen-enriched flameless combustion gas burner optimizes temperature distribution in the furnace and meanwhile reduces emission of NOx.

Description

technical field [0001] The invention relates to the field of gas fuel combustion equipment and methods, in particular to a graded oxygen-enriched flameless combustion gas burner and a control method thereof. Background technique [0002] Most steel heating furnaces use hydrocarbon combustible gases such as blast furnace gas, coke oven gas, natural gas, producer gas and mixed gas as fuel. Oxygen-enriched combustion can be achieved by increasing the oxygen concentration in conventional air, which can lower the ignition temperature, increase the combustion temperature and heat transfer efficiency of the furnace, and reduce the loss of exhaust smoke. Using it on the heating furnace not only expands the source of fuel, but also makes the blast furnace The high-efficiency utilization of fuels with low calorific value such as gas becomes possible, and at the same time, it can effectively solve the problem of oxygen dissipation in the steel production process. But for the heating f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/24F23D14/48F23D14/46
CPCY02E20/34
Inventor 李卫杰刘豪周末段殿勇涂垚杰
Owner WISDRI WUHAN WIS IND FURNACE
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