Split hot air type low-nitrogen gas burner

Abstract

The invention relates to a split hot air type low-nitrogen gas burner. The split hot air type low-nitrogen gas burner comprises a burner shell, a flame cylinder, a central gas pipe assembly, a burningtorch assembly and an air door regulating mechanism assembly; a heat-preserving structure is arranged on the inner wall of the burner shell; the flame cylinder is mounted at the front end of the burner shell; the internal part of the flame cylinder and the internal part of the burner shell run through each other; the burning torch assembly and the central gas pipe assembly are fixedly connected together to form a whole body mounted in the burner shell, and the front end of the whole body extends towards the front end of the flame cylinder; and the air door regulating mechanism assembly is mounted at a fan air inlet on the burner shell through a three-way pipe. The split hot air type low-nitrogen gas burner has the following beneficial effects: the burner is arranged separately from a fanmechanism in an appearance structure, and external circulation of flue gas is realized by mounting the air door regulating mechanism to connect with an external fan, so that excessive air quantity isreduced and generation of NOX is reduced; and the structure is simpler, and the practicability is high under the condition that the national discharge standard is met.

Description

technical field [0001] The invention relates to the technical field of burners, in particular to a split hot air type low-nitrogen gas burner. Background technique [0002] With the rapid development of society, some existing industrial manufacturers, especially those who use heat-conducting oil furnaces, cannot use water as the heat exchange medium, but can only use air for heat exchange, so hot air burners appear in this way. ; At present, the structure and working principle of the existing hot air burner are relatively single, which cannot meet the new smoke emission standards proposed at this stage, such as: nitrogen oxides NO X , CO, SO 2 and other emission requirements. The new smoke emission standard reduces the concentration of smoke, CO, NO X , SO 2 For example, the local standards of Beijing, Hebei and other places require boiler tail gas NO X Less than 30mg; such as Shanghai, Jiangsu, Zhejiang and other local standards require boiler tail gas NO X Less than ...

AI Technical Summary

Problems solved by technology

[0004] At present, in the burner industry at home and abroad, the combustion method adopts diffusion combustion. In order to ensure sufficient fuel combustion, the design idea of ​​mixing fuel and air is generally adopted. This combustion method has relatively concentrated flames, high flame temperature, and is easy to burn. produce NO X

Images