碳酸钙成垢离子变化规律及阻垢剂评价新方法  

Variations of concentrations of precipitable ions during precipi-tation of CaCO_3 and a new method for evaluating scale inhibitors

作　　者：唐和清[1] 齐松桥[1] 管慧敏[1] 李友清[1] 

机构地区：[1]华中科技大学化学与化工系,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2007年第10期108-111,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

摘　　要：研究了碳酸盐垢成垢过程中成垢阴、阳离子浓度的变化规律,并在此基础上提出了利用酸碱滴定来评价阻垢剂性能的方法.其基本原理是用酸标准溶液滴定静态阻垢实验前后成垢阴离子(HCO3-)浓度变化来评价阻垢剂的阻垢效率.利用此方法对HEDP,PBTCA,丙烯酸-丙烯酸羟丙酯三元共聚物等常用阻垢剂的阻碳酸钙垢性能进行了评价,较传统的络合滴定法具有操作方便、经济,更易于实现自动化等优点.The trend in the change of cations and anions concentration during the precipitation of calcium carbonate was studied,and a new method of evaluating scale inhibitors′ efficiency was proposed via acid-base titration.The basic principle of this new method was to evaluate the efficiency of a scale inhibitor by monitoring the change of HCO-3 concentration before and after the static scale-inhibition test.The inhibitor efficiency of several inhibitors including HEDP,PBTCA,and terpolymer,was evaluated by using the new method with satisfactory results.Compared with the conventional complexometric titration,this new method provides a lot of merits such as being easy of operation,low cost,and being easy of automation.

关 键 词：碳酸钙垢 静态法 酸碱滴定 络合滴定 阻垢剂 

分 类 号：TQ085.4[化学工程]