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导向喷动烘干机的设计

导向喷动烘干机的设计

作者:admin    来源:烘干机厂家    发布时间:2018-07-11 22:20    浏览量:

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图5.4为国内外正在研究的几种导向喷动烘干机,其中(a)为华东化工学院等单位所研制的导向喷动烘干机。他们在导向管上钻一些小孔,以便使部分喷泉气体透过小孔进到环形区,增加气固接触效果,提高热效率。图中(b)系匈牙利研制的导向喷动烘干机。该装置的气体喷嘴上部安置了一个按喷射泵原理工作的喷射器套管,从而大大提高了喷动烘干机的稳定性。图5-14(c)、(d)为英国联合碳化物公司及威斯康星大学研制的装置,称为可控喷动烘干机,该装置的控制,可通过改变分布板开孔率及调节导入的气量米控制喷动的操作。在可控喷动烘干机分布中心插入一料液喷嘴即可用于颗粒的表面喷涂(如在药片上涂敷糖衣等)或用于小颗粒的造粒干燥过程。图中(e)为卧式多级可控喷动烘干机,也适用于干燥过程。
导向喷动烘干机为喷动技术的工业应用创造了有利条件。由于篇幅有限,下两着重介绍图中( a )的设计方法。

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