有机膦酸防垢剂对CaCO_3表面Zeta电位的影响  

Effects of Phosphonates on Zeta Potential of Calcium Carbonate

作　　者：李伟超[1] 张贵才[1] 葛际江[1] 刘平[2] 

机构地区：[1]中国石油大学石油工程学院,东营257061 [2]中国石油大学化学化工学院,东营257061

出　　处：《精细石油化工进展》2005年第12期18-20,23,共4页Advances in Fine Petrochemicals

摘　　要：为了探讨有机膦酸防垢剂的防垢机理,适时测定了加入不同有机膦酸防垢剂时CaCO_3生成过程中的Zeta电位,并与加入防垢剂EDTA的结果进行了比较。实验结果表明,CaCO_3表面带有负电；生成过程中加入有机膦酸防垢剂,对CaCO_3表面的Zeta电位没有明显影响。从配位化学及胶体化学的角度对实验结果进行了分析。In order to elucidate the scale inhibition mechanism of phosphonates, the zeta potential of CaCO3 was measured in situ during precipitating process. The experiment data was compared with that of EDTA. The results showed that the surface of CaCO3 was electronegative. The phosphonates had no obvious effect on zeta potential of CaCO3. The experiment result was analyzed by complexation chemistry and colloid chemistry.

关 键 词：ZETA电位 有机膦酸 防垢剂 CaCO3悬浊液 防垢机理 

分 类 号：X741[环境科学与工程—环境工程] TE45[石油与天然气工程—油气田开发工程]