Self-pre-heating type nozzle for efficient helical fin

Abstract

A self-pre-heating type nozzle for an efficient helical fin comprises a gas pipe, an air shell, an air opening formed in the outer side of the air shell and an exhaust opening, and further comprises a helical fin air guiding pipe and a helical fin heat exchanger pipe. The air shell is internally provided with an air cavity and communicates with the air opening. The front end of the helical fin air guiding pipe is fixedly arranged in the air shell and communicates with the air cavity. The helical fin heat exchanger pipe is connected to the surface of the helical fin air guiding pipe in a sleeving manner, and the front end of the helical fin heat exchanger pipe is arranged in the air shell and communicates with the air cavity. The surface of the helical fin heat exchanger pipe is connected with a smoke guiding pipe in a sleeved manner, and the smoke guiding pipe communicates with the exhaust opening. One end of the gas pipe is arranged in the helical fin air guiding pipe and is connected with a primary combustor, and the other end of the primary combustor is fixedly arranged at the rear end of the helical fin heat exchanger pipe. By means of the self-pre-heating type nozzle, the temperature of pre-heated air can be effectively improved, the combustion efficiency of fuel can be improved, NOx emission can be reduced, energy sources can be saved, and the cost can be reduced.

Description

technical field [0001] The invention relates to the field of self-preheating burners, in particular to a high-efficiency spiral fin self-preheating burner. Background technique [0002] Most of the burners or burners in existing industrial furnaces do not have a preheating system, or the air preheating temperature is not high. When the combustion air enters the combustion chamber, the temperature of the combustion air is very low, and a large amount of heat needs to be absorbed during the combustion process. As a result, the combustion of gas is insufficient and incomplete, which affects the energy conversion of the system and the overall thermal efficiency of the industrial furnace, and the flame temperature field of the burner is not uniform, which seriously affects the life of the burner, and the flue gas outlet speed is not high. The temperature of the exhausted flue gas is high, the heat loss is large, and the emission of NOx and incompletely combusted CO in the flue ga...

AI Technical Summary

Problems solved by technology

[0002] Most of the burners or burners in existing industrial furnaces do not have a preheating system, or the air preheating temperature is not high. When the combustion air enters the combustion chamber, the temperature of the combustion air is very low, and a large amount of heat needs to be absorbed during the combustion process. As a result, the combustion of gas is insufficient and incomplete, which affects the energy conversion of the system and the overall thermal efficiency of the industrial furnace, and the flame temperature field of the burner is not uniform, which seriously affects the life of the burner, and the flue gas outlet speed is not high. The temperature of the exhausted flue gas is high, the heat loss is large, and the emission of NOx and incompletely combusted CO in the flue gas is also increased, which seriously pollutes the environment and affects the system work and the personal safety of operators.

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