Warm air combustion technology

　　is also called regenerative combustion technology, which is an efficient waste heat recovery and energy saving technology. Regenerative combustion technology refers to alternately switching air or gas fuel and flue gas to flow through the heat storage body, which can recover the sensible heat of high-temperature flue gas to the greatest extent, and the exhaust gas temperature can be reduced to below 180°C, which can assist combustion The medium or gas fuel is preheated to above 1000°C to form a new type of flame that is different from the traditional flame, and the reversal combustion makes the temperature distribution in the furnace more uniform. At present, my country has successfully applied regenerative combustion technology to industrial furnaces such as steel rolling furnaces, glass furnaces, aluminum melting furnaces, forging furnaces, and ladle roasters.

　　Pulse Combustion Technology

　　is an intermittent combustion method, which uses pulse width modulation technology to achieve temperature control of the furnace by adjusting the on-off ratio of the combustion time. This technology is easier to control the furnace temperature of the heating furnace, so the temperature field in the furnace is uniform and the temperature fluctuation is very small, and it can also save fuel. In recent years, this technology has been gradually promoted and applied in the combustion system control of industrial kilns such as metallurgy and ceramics, with good results.

　　Oxygen-enriched combustion technology

　　is a highly efficient combustion enhancement technology based on the oxygen content in the combustion-supporting air exceeding the conventional value. Oxygen-enriched combustion technology can reduce the ignition point of the fuel, accelerate the combustion reaction speed, promote complete combustion, reduce the excess air coefficient, and reduce the amount of flue gas after combustion, thereby improving the efficiency of heat utilization. Oxygen-enriched combustion technology is more suitable for high-temperature industrial furnaces, such as metal heating furnaces and glass melting furnaces. Some data show that if the forging heating furnace uses 23%-25% oxygen-enriched air for combustion, it can save 1/4 of the fuel.

　　Stage Combustion Technology

　　means that the insufficient amount of air is sent to the main combustion zone by changing the air supply method to form excess combustion of oxygen-deficient fuel, and then the remaining air is added in the second-stage combustion zone to form a fuel-lean combustion zone to complete the entire combustion process. Staged combustion can reduce the emission of nitrogen oxides. According to the project operation results, the adoption of staged air supply combustion technology can reduce the emission of nitrogen oxides in the exhaust gas by about 35%.