有机膦酸防垢剂对CaCO_3溶液动电性质的影响  

Effect 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,山东东营257061 [2]中国石油大学化学化工学院,山东东营257061

出　　处：《承德石油高等专科学校学报》2006年第2期8-11,共4页Journal of Chengde Petroleum College

摘　　要：为了探讨有机膦酸防垢剂的防垢机理,将等量的CaC l2溶液和Na2CO3溶液混合,适时测定了加入不同有机膦酸防垢剂时CaCO3生成过程中的Zeta电位,并与加入EDTA的实验进行了比较。结果表明,CaCO3表面带有负电;生成过程中加入有机膦酸防垢剂,CaCO3表面Zeta电位负值变小,这些结果可从配位化学及胶体化学的理论得到解释。In order to elucidate the scale inhibition mechanism of phosphonates, equimolar of CaC12 and Na2CO3 were mixed. Then the zeta potential of CaCO3 was measured in situ during precipitating process with time. The experiment data was compared with EDTA. The results showed that the CaCO3 grain is electronegative. The phosphonates had no obvious effect on zeta potential of CaCO3. Finally, the experiment result was analyzed by complexation chemistry and colloid chemistry.

关 键 词：ZETA电位 有机膦酸 CACO3 溶液 防垢机理 

分 类 号：TE992.2[石油与天然气工程—石油机械设备]