Diagonal-flow constant-temperature flameless burner

Abstract

The invention relates to a diagonal-flow constant-temperature flameless burner comprising an inner barrel, an outer barrel, a center tube and an annular baffle plate, wherein the inner barrel is horizontally arranged; one end of the inner barrel is communicated with an inlet pipe of the inner barrel; the other end of the inner barrel extends into a combustion furnace; the part of the inner barrel, inside the combustion furnace, is of an inner and outer dual-layer structure; a groove formed by the inner layer and the outer layer is filled with a refractory matter; the center tube is composed of an inlet section, a transition section and an outlet section; the diameter of the inlet section is greater than that of the outlet section; the transition section is of a tapered structure; the center tube horizontally penetrates through the center of the inner barrel; a certain axial distance is kept between the end face of the outlet section and the end face of an air outlet of the inner barrel; the outer sleeve is arranged outside the inner barrel; one end of the outer sleeve is open and tightly connected with one side of the annular baffle plate; one side surface of the outer barrel is communicated with an inlet pipe of the outer barrel; a plurality of diagonal-flow nozzles are uniformly arranged at the other side of the annular baffle plate at the periphery of the inner barrel along the circumference; one end of each diagonal-flow nozzle is fixed on a round baffle plate and communicated with the outer barrel; the outflow direction of the other end deviates from the outflow direction of the center tube. The diagonal-flow constant-temperature flameless burner works in a constant temperature state without cold and heat exchange.

Description

Technical field [0001] The invention relates to a gas burner, in particular to a diagonal flow type normal temperature flameless burner. Background technique [0002] Flameless combustion technology is a new type of high-efficiency low-nitrogen combustion technology. Since its inception in the 1990s, it has attracted the attention of domestic and foreign researchers and combustion equipment manufacturers. Compared with traditional combustion technology, the advantages of flameless combustion technology are as follows: the emission of nitrogen oxides is significantly reduced; the radiation heat exchange efficiency in the furnace is improved; the temperature field in the furnace is uniform; the combustion stability is good, and there is no flameout problem; noise. The realization of flameless combustion requires the combustion air to reach a high temperature (greater than the auto-ignition temperature of the fuel) before participating in the combustion. Therefore, this technology...

AI Technical Summary

Problems solved by technology

Compared with ordinary regenerative burners, the above two burners can realize flameless combustion, protect the burner from being burned, and prolong the service life of the burner; but they must also use periodic switching, cooling and heating (normal temperature, High temperature) alternate working mode, the loss of reversing valve and heat storage body is not reduced

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