直接加热的旋转式干燥器的原理是通过热气流的移动来提升和喷淋产品。
干燥器的效率在很大程度上取决于入口温度和废气温度之间的差异,尽管传热速率也会受到刮板设计和转速之间关系的影响。但是,不管气体和物料的温度如何,干燥(或停留)时间都至关重要,因为这取决于水从芯到物料表面的扩散速率。
对于想要提高热效率以及需要惰化的应用,可以回收排放的气体。此操作可在我们所有的气流干燥系统上实施,经过改造后亦可用于客户现有的干燥操作。
对于特定应用,旋转式叶栅设计适用于提供短程降落或“十字形”的升降器配置。


Whether it’s a fad or the future, 100% vial traceability is becoming an increasingly important consideration in the pharmaceutical freeze drying industry. Keeping a close eye on developments is GEA. We’re investigating possible solutions and, what’s more, we have the experience, expertise and know-how to implement them.
At GEA, our commitment to engineering for a better world fuels our pursuit of innovative solutions that enhance patient care and safety. One of our most promising ventures in recent years is aseptic spray drying – a technology that promises to revolutionize pharmaceutical manufacturing.