杂质对磷酸二氢钾冷却结晶过程的影响  

Effect of impurities on cooling crystallization process of potassium dihydrogen phosphate

作　　者：齐亚兵 杨清翠[1] QI Ya-bing;YANG Qing-cui(School of Chemistry and Chemical Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学化学与化工学院,陕西西安710055

出　　处：《应用化工》2020年第5期1175-1178,1182,共5页Applied Chemical Industry

基　　金：陕西省自然科学基金青年基金(2017JM2029);西安建筑科技大学青年科技基金(QN1509);西安建筑科技大学人才科技基金(RC1714)。

摘　　要：研究了MSMPR结晶器中Cl-、Ca2+、SO42-、NH4+对磷酸二氢钾结晶产品的产量、纯度、晶型等的影响。结果表明,杂质浓度的增大不利于晶体产量和纯度的增大;杂质的掺杂会影响晶体的晶型,出现晶体的变形、聚结。研究结果为磷酸二氢钾的结晶分离提纯提供了重要的参考依据。The effect of impurities of Cl-,Ca2+,SO42-,NH4+on production,purity,and crystal morphology of potassium dihydrogen phosphate were investigated in the MSMPR crystallizer.The result showed that the impurities are harmful to the promotion of production and purity of potassium dihydrogen phosphate.The crystal morphology would be influenced by impurities and crystal deformation and coalescence are experienced.The result can provide a reference for crystallization of potassium dihydrogen phosphate.

关 键 词：磷酸二氢钾 冷却结晶 MSMPR结晶器 杂质 

分 类 号：TQ028[化学工程] TQ026.5