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    • 9. 发明授权
    • Process for the production of guanidine nitrate from a mixture of urea
and ammonium nitrate and apparatus for its performance
    • 从硝酸铵和硝酸铵的混合物生产硝酸胍的方法及其性能的方法
    • US4390726A
    • 1983-06-28
    • US247512
    • 1981-03-25
    • Matthias Thoma
    • Matthias Thoma
    • C07C279/02B01J19/18B01J19/22B01J21/00B01J21/06C07C20060101C07C67/00C07C239/00C07C128/00
    • B01J19/18B01J19/22B01J21/00B01J21/06C07C1/00C07C239/00C07C279/02C07C67/00
    • In a process for the production of guanidine nitrate from a mixture of urea and ammonium nitrate in the presence of a catalyst containing silicium oxide at increased temperature, the initial mixture of urea and ammonium nitrate having an excess of ammonium nitrate, urea is added stepwise to the existing mixture of urea and ammonium nitrate and the catalyst during the procedure in quantities so that the weight ratio of urea: ammonium nitrate is permanently in favor of an excess of ammonium nitrate. The weight ratio is practically maintained during the process and is increased only in the final phase. An apparatus for the performance of the process of the invention comprises a reactor system including one or several substantially horizontal, tubular, heatable reactors in a series. The reaction mass is introduced together with the catalyst in the form of a melt and moved through the reactor system by means of a stirrer and a conveyor. At one or several places before the outlet of the reactor system inlet nozzles are provided in certain distances from one to the other through which urea and catalyst may be added to the melt.For a continuous performance for the process the reaction mass is brought onto heatable conveyor belts in a series as a layer of the desired thickness. Along the belt the required additives are added to the reaction mass. The rate of the conveyor belts depends on the reaction rate.
    • 在含有氧化硅的催化剂存在下,在硝酸铵和硝酸铵的混合物中生产硝酸胍的方法中,将具有过量硝酸铵,尿素的尿素和硝酸铵的初始混合物逐步添加到 尿素和硝酸铵的现有混合物和催化剂在操作过程中的量使尿素:硝酸铵的重量比永久有利于过量的硝酸铵。 重量比实际上在该过程中保持并仅在最后阶段增加。 用于实施本发明方法的装置包括一个反应器系统,其包括一个或几个基本上水平的,管状的,可加热的反应器。 反应物质与催化剂一起以熔体形式引入,并通过搅拌器和输送机移动通过反应器系统。 在反应器系统的出口之前的一个或几个位置处,入口喷嘴以一定的距离设置在另一个位置,尿素和催化剂可以通过该入口喷嘴加入到熔体中。 对于该方法的连续性能,将反应物质作为所需厚度的层串联成可加热输送带。 沿着带,将所需的添加剂加入到反应物料中。 传送带的速率取决于反应速率。