公开(公告)号：EP4029601A1

公开(公告)日：2022-07-20

申请号：EP21151312.2

申请日：2021-01-13

申请人： Green Granulation Ltd.

发明人： Monstrey, Ken Gaspard Marcel ,  Wang, Weizhen

IPC分类号： B01J2/16 ,  C05C3/00 ,  C05C9/00 ,  C05G5/12 ,  B01D53/58

摘要： Process and plant for the production of a urea ammonium sulfate granulate. In a first fluidized bed a first spraying liquid is sprayed comprising a urea melt and an aqueous solution of ammonium sulfate, e.g. a (near-)eutectic mixture. The bed temperature is below the crystallization temperature of the sprayed mixture. In a next compartment the granulate is fluidized to form a second fluidized bed. A second spraying liquid comprising a urea melt is sprayed into the second fluidized bed with a bed temperature higher than the bed temperature of the first fluidized bed and lower than the crystallization temperature of the sprayed second spraying liquid.