Process and device for producing granulates by fluidized bed spray
granulation
    3.
    发明授权
    Process and device for producing granulates by fluidized bed spray granulation 失效
    流化床喷雾造粒生产颗粒的方法和装置

    公开(公告)号:US6159252A

    公开(公告)日:2000-12-12

    申请号:US913970

    申请日:1997-09-26

    CPC分类号: C01B15/103 B01J2/16

    摘要: This invention relates to a process for the production of granulates by fluidized bed spray granulation and to a device for this purpose. Liquid starting materials may be converted into granulates by fluidized bed spray granulation. In order to ensure elevated material throughput, numerous nozzles, which are moreover susceptible to plugging and encrustation, must be installed.The disadvantages of known processes may be overcome according to the invention by arranging at least two spray nozzles at least partially directed towards each other in such a manner and the quantity of spray is adjusted in such a manner that their spray jets collide within the fluidized bed and substantially no liquid strike-through occurs onto a surface delimiting the fluidized bed or out of the fluidized bed. The spray jets of two spray nozzles directed towards each other collide frontally or enclose an angle of less than 180.degree.; the angle is preferably between 150.degree. and 180.degree..The device according to the invention comprises a flow channel (1) with laterally arranged spray nozzles (8), wherein in each case two exactly opposing or staggered spray nozzles are oriented in such a manner that the spray jets collide within the fluidized bed. Sodium percarbonate production is exemplfied.

    摘要翻译: PCT No.PCT / EP96 / 01453第 371日期:1997年9月26日 102(e)1997年9月26日PCT PCT 1996年4月3日PCT公布。 公开号WO96 / 33009 日期1996年10月24日本发明涉及通过流化床喷雾造粒生产颗粒的方法和涉及用于该目的的装置。 液体原料可以通过流化床喷雾造粒转化成颗粒。 为了确保提高的材料产量,必须安装许多喷嘴,这些喷嘴易于堵塞和结垢。 已知方法的缺点可以根据本发明通过将至少两个喷雾喷嘴至少部分地以这种方式相互指向的方式来克服,并且以这样的方式调节喷雾量,使得它们的喷射喷嘴在流化床 并且基本上没有液体穿透发生在限定流化床或流出床的表面上。 朝向彼此的两个喷雾喷嘴的喷射面前方碰撞或包围小于180°的角度; 该角度优选在150°至180°之间。 根据本发明的装置包括具有横向布置的喷嘴(8)的流动通道(1),其中在每种情况下,两个完全相对或交错的喷嘴以这样的方式定向,使得喷射流在流化床内碰撞。 过碳酸钠生产的例子。

    Process for the production or coating of granules, apparatus for carrying out the process, and granules obtainable thereby
    8.
    发明授权
    Process for the production or coating of granules, apparatus for carrying out the process, and granules obtainable thereby 有权
    用于生产或涂覆颗粒的方法,用于进行该方法的装置和由此获得的颗粒

    公开(公告)号:US07732008B2

    公开(公告)日:2010-06-08

    申请号:US10270116

    申请日:2002-10-15

    IPC分类号: B05D7/00

    CPC分类号: B01D5/0054 B01J2/16

    摘要: A process for the production or coating of granules in a fluidized bed, which includes heating a fluidized-bed gas to produce the fluidized bed, and applying a liquid medium containing a granule-forming or coating-forming compound, or at least one reaction component therefore, by spraying particles located in the fluidized bed and at a same time vaporizing an organic solvent contained in the liquid medium, said particles having a smaller mean diameter than that of particles to be produced. The process also includes partial condensation of an organic solvent from at least a portion of a fluidized-bed waste gas leaving the fluidized bed, and re-heating the fluidized bed-gas leaving the condensation device and reintroducing the re-heated gas into the fluidized bed.

    摘要翻译: 一种在流化床中生产或涂覆颗粒的方法,其包括加热流化床气体以产生流化床,以及施加含有颗粒形成或涂覆形成化合物的液体介质,或至少一种反应组分 因此,通过喷射位于流化床中的颗粒并同时使包含在液体介质中的有机溶剂蒸发,所述颗粒的平均直径小于要生产的颗粒的平均直径。 该方法还包括来自离开流化床的流化床废气的至少一部分的有机溶剂的部分缩合,以及再加热离开冷凝装置的流化床气体,并将再加热的气体重新引入流化床 床。