预热器是一种有效的常用节能设备,在能源短缺的今天,更显示出它的重要地位。目前世界各国都进行着研制工作,我国也不例外,新结构、新产品不断涌出。如根据烟气温度高低不同而设计成辐射或对流预热器;又如由结构而异的针状、片状、管状、整体以及其它型式等。为了近一步提高预热器的技术指标,近几年来制成了喷流和插入件等 Preheater is an effective common energy-saving equipment, in today’s energy shortages, but also shows its importance. At present, all countries in the world carry out research work, and our country is no exception with new structures and new products constantly pouring out. Such as according to the flue gas temperature is different from the design and radiation or convection preheater; also vary from structure to needle, sheet, tube, the whole and other types. In order to further improve the technical indicators of the preheater in recent years made a jet and inserts, etc.