过热蒸汽流化床制备粒状磷酸一铵成粒条件实验研究  

Experimental Investigation on Granulation Conditions for Production of Granular MAP by Spray Process in Superheated Steam Fluidized Bed

作　　者：杜怀明[1] 罗容珍[2] 程德军[1] 张承红[1] 朱家骅[3] 

机构地区：[1]四川理工学院材料与化学工程学院,四川自贡643000 [2]四川理工学院化学与制药工程学院,四川自贡643000 [3]四川大学化学工程学院,成都610065

出　　处：《四川理工学院学报（自然科学版）》2010年第6期734-736,740,共4页Journal of Sichuan University of Science & Engineering(Natural Science Edition)

基　　金：国家863计划(2006AA05Z235)

摘　　要：在底部直径为120mm的锥形流化床中,以过热蒸汽为流化介质,研究了流化氨化造粒制备粒状磷酸一铵的成粒条件。实验考察了喷淋密度、床层温度及流化气速等因素对成粒过程的影响,分析了磷酸一铵颗粒层式生长与团聚生长的机理,并给出了两种生长成粒的操作条件。The experiment is conducted in the superheated steam fluidized bed to study the effects of the spray density, the temperature of the fluidized bed layer, and the gas velocity on the process of fluidizing ammonification and granulation of monoammonium phosphate（MAP） in a cone fluidized bed with the diameter of 120 mm at the bottom. A mechanism of the growth of MAP granular is discussed. And the working conditions of producing MAP granules are given for two cases.

关 键 词：磷酸一铵 流化床 过热蒸汽 造粒 

分 类 号：TQ444.2[化学工程—化学肥料工业]