络合剂对磷酸二氢钾结晶除杂净化的作用  

Effect of complexing agent on impurity removal and purification of potassium dihydrogen phosphate crystallization

作　　者：刘佳[1] 陆春宏 曾波[1] 张恒 Liu Jia;Lu Chunhong;Zeng Bo;Zhang Heng(Yunnan Institute of Chemical Engineering, Kunming, Yunnan 650000;Yunnan Yuntianhua Red phosphorus Chemical Co., Ltd., Kaiyuan 661 600, Yunnan Province)

机构地区：[1]云南省化工研究院,云南昆明650000 [2]云南云天化红磷化工有限公司,云南开远661600

出　　处：《云南化工》2019年第4期97-98,共2页Yunnan Chemical Technology

摘　　要：结合云南云天化红磷化工有限公司磷酸二氢钾装置结晶槽中阳离子杂质富集问题,考察了乙二胺四乙酸二钠(EDTA-2Na)和磷酸三钠两种络合剂对磷酸二氢钾结晶脱除阳离子杂质的作用及可行性。Based on the enrichment of cationic impurities in the crystallization tank of potassium dihydrogen phosphate plant, the effect and feasibility of two complexing agents, ethylenediamine tetraacetic acid disodium (EDTA-2Na) and trisodium phosphate, on the removal of cationic impurities by potassium dihydrogen phosphate crystallization were investigated in this paper.

关 键 词：乙二胺四乙酸二钠(EDTA-2Na) 磷酸三钠 磷酸二氢钾结晶 沉淀 

分 类 号：TQ126.35[化学工程—无机化工]