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2. 发明授权

US5213820A Process and device for fluidized bed spray granulation 失效
标题翻译：流化床喷雾造粒工艺及装置
公开(公告)号：US5213820A
公开(公告)日：1993-05-25
申请号：US714357
申请日：1991-06-12
申请人： Hans Uhlemann , Reinhard Boeck , Hans Daun , Heiko Herold
发明人： Hans Uhlemann , Reinhard Boeck , Hans Daun , Heiko Herold
IPC分类号： B01J2/16 , B07B4/04
CPC分类号： B01J2/16 , B07B4/04
摘要： Granule production is based on particle growth in a fluidized bed (4), in which the liquid starting product is sprayed into the fluidized bed and the finished granular particle is discharged from the fluidized bed (4) with classification. The classification is carried out with the aid of a classifying air flow which is divided into individual single flows (6) to each of which is assigned a zigzag classifier module (7, 17) and a spray nozzle (5) or a group of spray nozzles. The course of the classifying process is such that the granular particles which are too small and have not yet reached the desired diameter are thrown back into the fluidized bed (4) by a return shaft (9, 18) seated on each of the zigzag classifier modules (7, 17) in parallel or radial zones without cross-mixing, in which the relatively small particles impinge at a relatively large distance from the return shaft (9, 18) and the large particles, which have already grown close to the discharge size, impinge at a relatively small distance. The process is carried out with the aid of a fluidized bed granulator, to the inlet plate (2) of which is connected a zigzag classifier, subdivided in a modular manner, in which each zigzag classifier module (7, 17) is provided with a return shaft (9, 18) at the point where it joins the inlet plate (2, 16). In addition, at least one spray nozzle (5) at the inlet plate (2, 16) is allocated to each zigzag classifier module (7, 17).
摘要翻译：颗粒生产基于流化床（4）中的颗粒生长，其中将液体起始产物喷射到流化床中，并且成品粒状颗粒从分级流出床（4）排出。分类是借助于划分为单独的单个流（6）的分类空气流进行的，每个流被分配有锯齿形分类器模块（7,17）和喷嘴（5）或一组喷雾喷嘴。分级过程的过程是使得太小并且尚未达到期望直径的粒状颗粒通过位于每个锯齿形分级器上的返回轴（9,18）被抛回到流化床（4）中模块（7,17）在没有交叉混合的情况下处于平行或径向区域，其中相对较小的颗粒以相对较大的距离离开返回轴（9,18）和已经生长在接近放电的大颗粒尺寸，在相对较小的距离处撞击。借助于流化床造粒机进行该过程，其入口板（2）连接有以模块方式细分的锯齿形分类器，其中每个锯齿形分类器模块（7,17）设置有在其连接入口板（2,16）的位置处的返回轴（9,18）。此外，入口板（2,16）处的至少一个喷嘴（5）被分配给每个锯齿形分类器模块（7,17）。

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