The hot blast stove as a thermodynamic machine was widely used in China in the late 1970s. It has become a replacement for electric heat sources and traditional steam-powered heat sources in many industries.
Through long-term production practices, it has been recognized that the use of hot air as a medium and carrier can greatly improve heat utilization and thermal work. Conventional electric heat sources and steam thermal power are often equipped with multiple circulating fans during the transportation process, so that they eventually form hot air for drying or heating operations. This process obviously has a lot of shortcomings such as wasting energy and causing excessive auxiliary equipment and complicated process. The bigger problem is that this heat source is at a loss for the need for higher temperature drying or baking operations.
The fuel heat exchanger made of silicon carbide is a new type of tube-type high-temperature heat energy recovery device, which can be widely used in metallurgy, machinery, building materials, chemical industry, etc., directly recovering high temperature of 850-1400 °C discharged from various industrial furnaces. Exhaust heat of flue gas to obtain high temperature combustion air or process gas. The heat exchange component material of the device developed is a new type of silicon carbide engineering ceramic, which has excellent performances of high temperature resistance and thermal shock resistance, from 1000 ° C to air temperature, repeated 50 times without cracks; thermal conductivity Equivalent to stainless steel; good corrosion resistance in oxidizing and acidic media. The thermal compensation is successfully solved structurally and the gas sealing problem is well solved. The device has high heat transfer efficiency and remarkable energy-saving effect. It can save combustion air or heat process gas of certain processes, save one-time energy, save fuel economy by more than 30%, strengthen process and significantly improve production. ability.
