The self-preheating burner, also known as the heat exchanger burner, integrates the burner and heat exchanger into a single unit, using flue gas to preheat air or fuel inside the burner. Compared to burners that do not recover flue gas heat, this type of burner can reduce fuel consumption by 20% to 30%, offering better energy savings. It performs even better when used in furnaces operating at temperatures above 1000°C.

 merit ：

Easy to install and small size

The self-preheating burner can be installed as easily as a normal burner, and its volume is only one tenth of the flue heat exchanger. In addition, it integrates the heat exchanger and burner into a whole, without the need for additional air and flue gas piping system, reducing the use of space.

Investment cost and return advantage

Compared with heat exchangers and burner equipment with the same performance, self-preheating burner has less investment, short payback period and quick effect.

Improve heat transfer and temperature uniformity

The fuel products are ejected from the nozzle at a speed of 80m/s. This high exit velocity facilitates the recirculation of the furnace gas, enhancing heat transfer and ensuring a more uniform temperature distribution. The flame is ejected at a high speed and over a wide range, ensuring stable combustion. With an adjustable ratio of 20:1, this setup promotes the circulation of the kiln gas flow, resulting in a more uniform heating temperature within the furnace.

Pressure regulation is flexible

With the help of the air ejector in the exhaust pipe, the combustion products are attracted through the heat exchanger, and the furnace pressure can be adjusted by changing the amount of jet air.

Wide range of applications

This self-preheating burner can be used in a variety of industrial furnaces with a working temperature range of 600-1400 C, such as forging furnace, steel ladle roaster, tempering furnace, aluminum melting furnace, etc., to meet the needs of different industrial production.

 shortcoming ：

It is not convenient to adjust the flow path of furnace gas: it is not convenient to adjust the flow path of furnace gas by the flue opening, which may have a certain impact on the airflow organization and heat exchange in the industrial furnace, and is not conducive to the flexible control of the flow state of gas in the furnace according to the specific process requirements, so as to achieve more accurate heating and heat transfer effect.

High one-time cost: Compared with other burners, self-preheating burner has a short return on investment period, high rate of return, low operating cost and quick effect of production efficiency, but the one-time cost is relatively high, which may bring some economic pressure to some enterprises with limited budget.

Safety hazards: When burning fuel gas, it is crucial to be vigilant about safety issues such as explosions and gas poisoning. During use, it is essential to strictly follow the operating procedures, including cleaning before ignition and after extinguishing, observing the flame during combustion, opening the induced draft fan or combustion aid fan before the fuel gas valve, and closing the fuel gas valve before shutting down the induced draft fan or combustion aid fan. Improper operation can easily lead to safety accidents.

Possible failure problems: in some industrial furnace applications, the self-preheating burner may be affected by a variety of factors during operation and need to invest some energy in maintenance and management.