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Working principle of regenerative burner

January 29,2023

The working principle of regenerative burner

It is that after the normal temperature air from the blower is switched into the regenerative burner by the reversing valve, it is heated when passing through the regenerative burner.  In a very short time, the normal temperature air is heated to close to the furnace temperature (generally 50-100 ℃ lower than the furnace temperature). After the heated high temperature hot air enters the furnace, the flue gas in the surrounding furnace will be sucked to form a thin oxygen-poor high temperature air stream with oxygen content much lower than 21%. At the same time, fuel oil will be injected into the vicinity of the thin high temperature air, and the fuel oil will burn in the oxygen-poor (2-20%) state.

At the same time, the hot flue gas after combustion in the furnace of the regenerative furnace burner is discharged into the atmosphere through another regenerative burner. When the high-temperature hot flue gas in the furnace passes through the regenerative burner, the sensible heat is stored in the regenerative burner, and then the low-temperature flue gas below 150 ℃ is discharged through the reversing valve.

The change-over valve with low operating temperature switches at a certain frequency, so that the two regenerative burners are in the alternate state of heat storage and heat release, so as to achieve the purpose of energy saving and reducing NO2 emissions. The commonly used switching cycle is 30-200 seconds.

Regenerative combustion engines are widely used in aluminum melting furnace, iron melting furnace, steel melting furnace and lead melting furnace. The regenerative burner is a non-standard customized burner. Tangshan Jinsha Combustion Company can design a customized scheme according to the needs.



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