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1. 发明申请

WO2017007315A1 GRANULATION OF UREA PRODUCTS 审中-公开
标题翻译：乌拉圭产品的形成
公开(公告)号：WO2017007315A1
公开(公告)日：2017-01-12
申请号：PCT/NL2016/050486
申请日：2016-07-06
申请人： STAMICARBON B.V.
发明人： SOONS, Petrus Catharina Gerlach , SCHAAFSMA, Stefan Hendrikus
IPC分类号： C05C3/00 , C05C9/00 , C05G3/00
CPC分类号： C05G3/0058 , B01J2/16 , C05C3/005 , C05C9/005
摘要： Disclosed is a method of making a granulate of a urea product comprising urea and a salt, such as urea ammonium sulfate, having a high content of the salt. The high content is such as to provide an amount of the salt above the limit of solubility of the salt in urea. The granulate of the invention is characterized by having a smooth surface, which, e.g. in the event of urea ammonium sulfate, is not normally the case for granulate having the aforementioned high ammonium sulfate content. According to the invention this is realized by dividing the feed liquids to granulation. This division is based on non-final granulation liquids of a sufficiently high content of the salt, and a final granulation liquid (determining the surface) having a salt content of below the solubility limit of the salt, or no salt at all. E.g. in the event of urea ammonium sulfate, the non-final granulation liquids possibly are a slurry of urea and more than 20 wt.% of ammonium sulfate. The final granulation liquid then has 0-20 wt.% of ammonium sulfate, i.e. below the solubility limit.
摘要翻译：公开了一种制备包含尿素和盐的颗粒的方法，所述盐和盐具有高含量的盐，例如硫酸铵。高含量是提供一定量的盐高于盐在尿素中的溶解度的极限。本发明的颗粒的特征在于具有光滑的表面，在尿素硫酸铵的情况下，对于具有上述高硫酸铵含量的颗粒通常不是这种情况。根据本发明，这是通过将进料液分成造粒来实现的。该分配基于具有足够高的盐含量的非最终造粒液体，以及盐含量低于盐的溶解度极限的最终造粒液（确定表面），或根本没有盐。例如。在尿素硫酸铵的情况下，非最终造粒液体可能是尿素的浆液和大于20重量％的硫酸铵。最终造粒液体的硫酸铵含量为0-20％，即低于溶解度极限。

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