Automatic-switching heat accumulation type gas burner

Abstract

The invention provides an automatic-switching heat accumulation type gas burner, wherein two single gas burners with the same structure are arranged at two sides of a furnace body; when one burner burns, the other burner accumulates heat; the automatic reversing of the burner is achieved by an external switching valve; the switching of a low-temperature operating mode and a high-temperature operating mode, the low-temperature high-speed burning and the high-temperature oxygen-lacking burning and smoke reflux technology are adopted, so that the heat exchange is full, the inlet temperature of the combustion-supporting air is improved greatly, the temperature of the exhausted smoke is reduced, the complete burning is achieved, and the low NOx emission, automatic switching of high and low temperature operating modes, high-efficient and energy-saving self heat accumulation function are achieved.

Description

technical field [0001] The invention relates to a regenerative burner, in particular to a self-regenerative gas burner with compact structure, complete combustion and low NOx emission. Background technique [0002] The technical key of high-air temperature and low-oxygen combustion lies in preheating the combustion-supporting air from room temperature to a high temperature of 800-1100°C through several pairs of high-efficiency regenerators that work alternately, and at the same time effectively organizing the flow rate and intersection angle of the fuel and combustion-supporting air into the furnace. , mixing methods and other means, so that the fuel can be burned in volume in the furnace space where the oxygen content is controlled at 2~15%, so that the NOx emission can be greatly reduced. Controlled within the range above the dew point and below 150°C, this advanced combustion method can simultaneously achieve the effects of environmental protection, energy saving, and hig...

AI Technical Summary

Problems solved by technology

The burners on the market that can realize heat storage and combustion in one burner at the same time generally have a power between 200KW and 2000KW. Its power is low and its structure is compact, and it has been well used in some small heating furnaces. For large heating furnaces or melting furnaces, the power cannot meet the rated requirements. If multiple burners are used to meet the power requirements, it will increase the difficulty of designing and manufacturing the furnace body.

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