Metal surface burner

Abstract

The invention discloses a metal surface burner which comprises a premixing pipeline and a tail end pipeline, wherein the gas inlet end of the premixing pipeline is connected with a fan, a branch-shaped gas distributor is arranged in the premixing pipeline, the gas inlet end of the branch-shaped gas distributor penetrates through the premixing pipeline and then is connected with a main gas pipe, the tail end pipeline is arranged on the front wall of a hearth in a penetrating mode, the gas inlet end outside the hearth of the tail end pipeline is connected with the gas outlet end of the premixing pipeline, the gas outlet end inside the hearth of the tail end pipeline is connected with a micropore metal cylinder, a flame-retardant disc is arranged in the tail end pipeline, a built-in ignition nozzle is arranged in the micropore metal cylinder and connected with an ignition gas pipe, and the ignition gas pipe is connected with the main gas pipe. The metal surface burner is more compact in structure, better in gas premixing effect and capable of achieving stable combustion in a small-hearth boiler and ultralow emission of NOx.

Description

technical field [0001] The invention relates to the technical field of burners, in particular to a metal surface burner. Background technique [0002] In recent years, with the increasingly stringent national environmental protection regulations and the gradual implementation of carbon peak and carbon neutral policies, higher requirements have been put forward for energy-saving and emission-reduction technologies in the manufacturing process. Metal surface combustion technology utilizes microporous metal cylinder and premixed combustion, which effectively improves the uniformity and stability of combustion, avoids concentrated combustion of fuel and local high temperature, thereby effectively reducing boiler NOx emissions and improving boiler combustion efficiency. [0003] The existing metal surface burner ignition structure is too complicated, resulting in uneven distribution of flow field and combustion, and also restricts the miniaturization of the burner size. At the s...

AI Technical Summary

Problems solved by technology

[0003] The existing metal surface burner ignition structure is too complicated, resulting in uneven distribution of flow field and combustion, which also restricts the miniaturization of the burner size

At the same time, the structure of the premixing section of the existing metal surface burner is too short, and the gas cannot be fully premixed with the air, which will also lead to excessive local combustion intensity, resulting in low efficiency and high NOx emissions.

[0004] There is still a lot of room for improvement in the ignition structure and premixing section structure of the existing metal surface burner

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