湿法磷酸制备大颗粒工业磷酸一铵的结晶工艺研究  

Study on Crystallization Process of Large Particle Industrial Monoammonium Phosphate Prepared by Wet-Process Phosphoric Acid

作　　者：李青[1] 龙秉文[1] 邓伏礼[1] 丁一刚[1] 吴元欣[1] 

机构地区：[1]武汉工程大学绿色化工过程教育部重点实验室湖北省新型反应器与绿色化学工艺重点实验室,湖北武汉430074

出　　处：《化学与生物工程》2014年第8期24-26,共3页Chemistry & Bioengineering

基　　金：国家科技支撑计划资助项目(2013BAB07B02)

摘　　要：采用湿法磷酸制备大颗粒工业磷酸一铵，考察了搅拌速度和降温梯度对结晶的影响。结果表明，在搅拌速度为250-350 r·min^-1、降温梯度为0.2-0.4℃·min^-1的最佳结晶工艺条件下，得到的磷酸一铵颗粒较大且均匀、粒度分布较集中、晶型完整。Large particle industrial monoammonium phosphate was prepared by wet-process phosphoric acid and the crystallization process was optimized.The effects of stirring speed and cooling gradient on crystalliza-tion were investigated.The results showed under the optimum crystallization conditions as follows：the stirring speed was 250-350 r·min^-1 ,the cooling gradient was 0.2-0.4 ℃·min^-1 ,monoammonium phosphate was obtained in large and uniform particles with concentrate particle size distribution and good crystal form.

关 键 词：湿法磷酸 磷酸一铵 大颗粒 结晶 monoammonium phosphate(MAP) 

分 类 号：TQ126.39[化学工程—无机化工]