公开(公告)号：US06179893B2

公开(公告)日：2001-01-30

申请号：US09330473

申请日：1999-06-11

申请人： Horst Bendix ,  Heinz Lange ,  Klaus Sch{umlaut over (u)}bel ,  Hans-Joachim Wachsmuth ,  Tetsuzo Honda ,  Eiji Sakata ,  Genshi Nishikawa

发明人： Horst Bendix ,  Heinz Lange ,  Klaus Sch{umlaut over (u)}bel ,  Hans-Joachim Wachsmuth ,  Tetsuzo Honda ,  Eiji Sakata ,  Genshi Nishikawa

IPC分类号： C05C900

CPC分类号： C05C3/00 ,  C05C9/00

摘要： There is disclosed a process to produce fertilizer granules containing urea and ammonium sulfate with a high ammonium sulfate concentration of ≦60 wt. % in a fluidized bed granulator, which process comprises the steps of: a) a molten urea suspension consisting of ammonium sulfate having an average particle size of 30 to 300 &mgr;m and urea having a temperature range of 120 to 155° C. is produced, b) the molten urea suspension produced at the stage a) is then injected from below on the fine particles of urea/ammonium sulfate in a fluidized bed granulator by means of at least a nozzle, while the fluidized bed is loosened by a spouting air flow in the injection area, and subsequently, c) the fertilizer granules generated in the fluidized bed are separated and, if necessary, treated. Homogeneous urea/ammonium sulfate granules of an ammonium sulfate content between 30 and 60 wt. % can be produced this way without any problems, while the particle size of granules can be adjusted selectively and dust emissions by granulation can be reduced to a minimum.

摘要翻译： 公开了一种生产含硫酸铵浓度<60重量％的尿素和硫酸铵的肥料颗粒的方法。 ％的流化床造粒机，该方法包括以下步骤：a）制备由平均粒径为30-300μm的硫酸铵和温度范围为120-155℃的尿素组成的熔融尿素悬浮液， b）然后在流化床制粒机中通过至少一个喷嘴从下面将α阶段产生的熔融尿素悬浮液从下方注入到尿素/硫酸铵的细颗粒上，同时流化床被喷射空气流松动 在注射区域中，随后c）在流化床中产生的肥料颗粒被分离，并且如果需要，进行处理。 硫酸铵含量在30-60wt。之间的均匀的尿素/硫酸铵颗粒。 可以以这种方式产生％，而没有任何问题，而颗粒的粒度可以选择性地调节，并且通过造粒的粉尘排放可以降低到最小。

公开(公告)号：US20070013092A1

公开(公告)日：2007-01-18

申请号：US11484167

申请日：2006-07-11

申请人： Eiji Sakata ,  Genshi Nishikawa ,  Haruyuki Morikawa

发明人： Eiji Sakata ,  Genshi Nishikawa ,  Haruyuki Morikawa

IPC分类号： B29B9/00

CPC分类号： B01J2/16 ,  C05C9/005 ,  C05G3/0058 ,  Y02P20/129

摘要： To effectively prepare granular urea that constantly has a moisture concentration of 0.3 wt % or less in the product and has a large grain load strength to be hardly crashed. In a granulating process for preparing granular urea from an aqueous urea solution using a fluidized bed method or a fluidized, spouted bed method, an aqueous urea solution having an urea concentration of 94-98.5 wt % is used, and an operation temperature of the fluidized bed is controlled in a range of 110-120° C. to accelerate drying of a granulated product, thereby giving a granular urea product having moisture of 0.3 wt % or less in the product.

摘要翻译： 为了有效地制备在产品中不断具有0.3重量％以下的水分浓度的粒状尿素，并且具有很大的颗粒负荷强度，几乎不会崩溃。 在使用流化床法或流化喷射床法从尿素水溶液制备颗粒状尿素的造粒方法中，使用尿素浓度为94-98.5重量％的尿素水溶液，并且流化床 床控制在110-120℃的范围内，以加速造粒产物的干燥，从而得到产品中水分为0.3重量％以下的颗粒状尿素产品。

公开(公告)号：US07582237B2

公开(公告)日：2009-09-01

申请号：US11484167

申请日：2006-07-11

申请人： Eiji Sakata ,  Genshi Nishikawa ,  Haruyuki Morikawa

发明人： Eiji Sakata ,  Genshi Nishikawa ,  Haruyuki Morikawa

IPC分类号： C05C9/00 ,  B29B9/00

CPC分类号： B01J2/16 ,  C05C9/005 ,  C05G3/0058 ,  Y02P20/129

摘要： In a granulating process for preparing granular urea from an aqueous urea solution using a fluidized bed method or a fluidized, spouted bed method, an aqueous urea solution having a urea concentration of 94-98.5 wt % is used and the operational temperature of the fluidized bed is controlled in a range of 110-120° C. to accelerate the drying of a granulated product to thereby give a granular urea product having a moisture content of 0.3 wt % or less.

摘要翻译： 在使用流化床法或流化喷雾床法从尿素水溶液制备颗粒状尿素的造粒方法中，使用尿素浓度为94-98.5重量％的尿素水溶液，流化床的操作温度 控制在110-120℃的范围内以加速造粒产物的干燥，从而得到水分含量为0.3重量％以下的颗粒状尿素产品。

公开(公告)号：US07344663B2

公开(公告)日：2008-03-18

申请号：US11639106

申请日：2006-12-14

申请人： Genshi Nishikawa ,  Eiji Sakata

发明人： Genshi Nishikawa ,  Eiji Sakata

IPC分类号： B29B9/00

CPC分类号： B01J19/26 ,  B01J2/16 ,  B01J4/002 ,  B01J8/1809 ,  B01J8/1818 ,  B01J8/1827 ,  B01J8/1854 ,  B01J8/245 ,  B01J8/386 ,  B01J2208/00176

摘要： The present invention provides a granulation method with increased drying effect while assuring the pressure for spraying the aqueous solution and the necessary number of nozzles equivalent to those of conventional design. Specifically, the granulation method uses a granulator structured by a fluid bed which fluidizes the granulating-particles, an air feed pipe to introduce air, a nozzle for spraying the raw material aqueous solution being located at center part of the air feed pipe, and a perforated plate to feed a fluidization air to the fluid bed, thus granulating the raw material aqueous solution by spraying thereof from the nozzle into a granulation part, wherein a multi-nozzle in a specified shape having a plurality of nozzle ends thereon is used as the nozzle for spraying the raw material aqueous solution.

摘要翻译： 本发明提供了一种具有增加的干燥效果的造粒方法，同时确保喷射水溶液的压力和与常规设计相当的必要数量的喷嘴。 具体而言，造粒方法使用由流化床造粒颗粒构成的造粒机，引入空气的供气管，喷射位于供气管中心部分的原料水溶液的喷嘴， 多孔板将流化空气送入流化床，从而将原料水溶液从喷嘴喷雾造粒成粒状部分，其中使用具有多个喷嘴端的特定形状的多喷嘴作为 用于喷涂原料水溶液的喷嘴。

公开(公告)号：US20070148325A1

公开(公告)日：2007-06-28

申请号：US11639106

申请日：2006-12-14

申请人： Genshi Nishikawa ,  Eiji Sakata

发明人： Genshi Nishikawa ,  Eiji Sakata

IPC分类号： A61K9/28 ,  B01J13/00

CPC分类号： B01J19/26 ,  B01J2/16 ,  B01J4/002 ,  B01J8/1809 ,  B01J8/1818 ,  B01J8/1827 ,  B01J8/1854 ,  B01J8/245 ,  B01J8/386 ,  B01J2208/00176

摘要： The present invention provides a granulation method with increased drying effect while assuring the pressure for spraying the aqueous solution and the necessary number of nozzles equivalent to those of conventional design. Specifically, the granulation method uses a granulator structured by a fluid bed which fluidizes the granulating-particles, an air feed pipe to introduce air, a nozzle for spraying the raw material aqueous solution being located at center part of the air feed pipe, and a perforated plate to feed a fluidization air to the fluid bed, thus granulating the raw material aqueous solution by spraying thereof from the nozzle into a granulation part, wherein a multi-nozzle in a specified shape having a plurality of nozzle ends thereon is used as the nozzle for spraying the raw material aqueous solution.

摘要翻译： 本发明提供了一种具有增加的干燥效果的造粒方法，同时确保喷射水溶液的压力和与常规设计相当的必要数量的喷嘴。 具体而言，造粒方法使用由流化床造粒颗粒构成的造粒机，引入空气的供气管，喷射位于供气管中心部分的原料水溶液的喷嘴， 多孔板将流化空气送入流化床，从而将原料水溶液从喷嘴喷雾造粒成粒状部分，其中使用具有多个喷嘴端的特定形状的多喷嘴作为 用于喷涂原料水溶液的喷嘴。