An air preheater is a general term to describe any device designed to heat air before another process with the primary objective of increasing the thermal efficiency of the process. They may be used alone or to replace a recuperative heat system or to replace a steam coil. The purpose of the air preheater is to recover the heat from the boiler flue gas which increases the thermal efficiency of the boiler by reducing the useful heat lost in the flue gas. As a consequence, the flue gases are also conveyed to the flue gas stack (or chimney) at a lower temperature, allowing simplified design of the conveyance system and the flue gas stack.
Cyclone preheater is an important part of calcinations system in cement plant and is the main device for increasing the quality of the cement products and reducing energy consumption. Cyclone preheater has advantages of high performance, strong adaptability, convenient operation, reliable running and low investment, etc.