Regenerative Combustion System

Working principle of regenerative combustion system

Regenerative burners work in pairs. They alternate combustion and smoke exhaust, and the regenerator in the burner changes between heat release and heat absorption states accordingly. This pair of burners are located on the same side of the equipment. When burner 1 burns, the air flows through the regenerator that has accumulated heat and is heated to about 1000°C to participate in combustion. At the same time, burner 2 exhausts smoke. The heat of the gas is absorbed by the regenerator, and the exhaust gas temperature is reduced to about 200°C. After the reversing operation, burner 2 burns, and the air is also heated by the regenerator to about 1000°C to participate in the combustion. Burner 1 exhausts smoke, and the flue gas heat.The exhaust gas temperature is reduced to about 200°C after being absorbed by the heat storage body. Repeatedly, through the medium of regenerator, the waste heat of the furnace flue gas is converted into physical heat of the air and recycled. The regenerator with sufficient heat transfer capacity and heat-containing capacity can fully recover the waste heat of the flue gas and preheat the air to a very high temperature. Through the regenerative burner, the flue gas discharge temperature can be reduced to 200°C, the air can be preheated to a high temperature of about 1000°C, and the heat recovery efficiency reaches more than 85%. This can not only save a lot of energy, but also greatly increase the theoretical combustion temperature of the fuel, shorten the melting time, reduce the heat loss rate, and increase the output. For this reason, regenerative combustion systems are widely used in various industrial furnaces and aluminum melting furnaces.