公开(公告)号：US20060177574A1

公开(公告)日：2006-08-10

申请号：US10564082

申请日：2004-07-02

Applicant: Stanislaus Mutsers ,  Antonius Bongers ,  Gerardus Mathias Wagemans

Inventor： Stanislaus Mutsers ,  Antonius Bongers ,  Gerardus Mathias Wagemans

IPC: B05C5/00

CPC classification number: B01J2/16 ,  C07C273/14

Abstract: Process for the preparation of urea granules in a fluid bed granulator comprising at least one inlet for fluidization air, a distribution plate above which the fluid bed is present and sprayers that are mounted in the distribution plate, from which the urea melt is sprayed on or over the urea particles present in the fluid bed, which particles are kept in motion by the fluidization air, characterized in that the fluidization air contains very finely atomized water and in that the urea concentration of the urea melt is higher than 97 wt. %.

Abstract translation: 在流化床造粒机中制备尿素颗粒的方法，其包括至少一个用于流化空气的入口，在其上方存在流化床的分配板和安装在分配板中的分配板，尿素熔体喷射在其上， 在流化床中存在的尿素颗粒中，这些颗粒被流化空气保持运动，其特征在于，流化空气含有非常精细的雾化水，并且尿素熔体的尿素浓度高于97wt。 ％。

公开(公告)号：US20070059446A1

公开(公告)日：2007-03-15

申请号：US10576300

申请日：2004-10-15

Applicant: Stanislaus Mutsers

Inventor： Stanislaus Mutsers

IPC: B05D7/00

CPC classification number: B01J2/16 ,  C07C273/02

Abstract: Process for the preparation of urea granules in a fluid-bed granulator, by using at least one feeding device to feed a urea melt in the form of a film to a fluidized bed of solid urea nuclei, upon which the nuclei grow by solidification of the urea melt on the nuclei, in which the amounts of biuret and water in the urea melt and in the urea granules fulfill the following relation b m · b g w m · ( w m - w g ) = 0.1 - 20 wherein bm=the % by weight of biuret in the urea melt bg=the % by weight of biuret in the urea granules wm=the % by weight of water in the urea melt wg=the % by weight of water in the urea granules.

Abstract translation: 用于在流化床制粒机中制备尿素颗粒的方法，通过使用至少一个进料装置将膜形式的尿素熔体供给到固体尿素核的流化床，在其上通过固化 尿素熔化在核上，其中尿素中的缩二脲和水的量在尿素颗粒中满足以下关系：