Scr flue heat-recovering direct combustion nozzle

CN224340722UActive Publication Date: 2026-06-09CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
Filing Date
2025-07-31
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In existing SCR flue gas duct supplementary heating direct combustion nozzles, the combustion-supporting gas and the combustion gas are in a low-temperature state before entering the combustion chamber, and the molecules are not active, resulting in incomplete mixing and failure to completely burn harmful gases.

Method used

An SCR flue gas reheating direct combustion nozzle was designed, comprising a generator body, a burner tube, a gas pipe, an auxiliary gas pipe, and a reheating mechanism. Through the cooperation of a circulating pump and a heating sleeve, heat is generated by liquid circulation to preheat the gas. A conical structure and a one-way valve are set in the generator body to control the gas flow rate and mixing. Combined with an igniter, complete combustion is ensured.

Benefits of technology

It achieves thorough mixing and preheating of combustible gas and combustion-supporting gas, reduces the leakage of harmful gases, prevents backflow explosions, and ensures the sufficiency and safety of the combustion process.

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Abstract

The utility model discloses a flue heat -supplementing direct combustion burner, apply in the heat -supplementing hot -blast furnace technical field, and its technical scheme main points are: a kind of SCR flue heat -supplementing direct combustion burner, including generator body, the burner tube being connected with generator body, gas pipe, combustion gas pipe and heat -supplementing mechanism, the heat -supplementing mechanism includes the circulating pump being fixedly installed in generator body top, the inside of the one end of burner tube being away from generator body is equipped with thread channel, and it has technical effect that: burner tube can generate a lot of heat when working to heat liquid, and heated liquid is provided with power by circulating pump and is returned to circulating pump by backflow pipe one and is sent to the inside of heating sleeve by conveying pipe two, so that heat is brought to gas pipe, combustion gas pipe in the gas that will be entered into generator body by the circulation of liquid, so that the combustion that enters into the inside of generator body is more sufficient.
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