A kind of spiral ribs cold -type cold flame gas burner

Abstract

The invention discloses a spiral annular rib water-cooled cold flame gas burner, comprising a surface combustion device and a three-stage water-cooled circulation device: the surface combustion device includes spiral annular rib, the spiral annular rib is provided with multiple layers, and the multi-layer spiral annular rib is combined with the combustion The axis of the radiator is arranged at a certain angle to form a spiral stepped isobaric air intake chamber. The inner side of the multi-layer spiral ring rib is provided with a firing gun hole / central secondary air duct; the three-stage water cooling circulation device includes a water inlet header and an outlet header. The water header and the outlet header are respectively connected with the annular cooling water pipe to form a closed water circulation loop. The annular cooling water pipe is arranged through the spiral ring rib to form the first-stage water cooling surface. The tube bundle constitutes the second-stage water-cooling surface and the third-stage water-cooling surface, forming a sphere-like cold flame combustion surface as a whole. The invention ensures stability, high efficiency, cleanliness and safety during combustion of the gas fuel, and can also realize water cooling of the flame surface, and the cooling pipes form a closed circulation loop.

Description

technical field [0001] The invention belongs to the technical field of cold flame gas burners, in particular to a water-cooled cold flame gas burner with spiral ring ribs. Background technique [0002] As a kind of clean energy, natural gas has the advantages of high combustion efficiency, low cost of pollutant control and less pollutant emission. Natural gas will still produce some atmospheric pollutants such as nitrogen oxides in the process of combustion. According to its source, it is mainly divided into Thermal, rapid and fuel type, where the generation of fuel type and rapid type is almost negligible, thermal type NO x It accounts for more than 90% of all nitrogen oxide emissions. [0003] The key to controlling NOx emissions: one is to control the formation of nitrogen oxides, and the other is to control the reduction of nitrogen oxides that have been generated to N 2 . Controlling the formation of nitrogen oxides is mainly to control the combustion temperature, an...

AI Technical Summary

Problems solved by technology

Although the low-nitrogen combustion technology of gas-fired boilers in China has been developed to a certain extent at this stage, such as staged combustion, flue gas recirculation, lean-burn premixing, water-cooling premixing, etc., some technologies still have high cost, poor effect, and are not suitable for high pressure and Disadvantages of supercritical boilers

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