摘要
为探究南翼山油田水中NH4Cl对H3BO3低温介稳区性质的影响,采用浊度法测量了253.15 K^303.15 K温度范围不同浓度的NH4Cl对CaCl2溶液中硼酸的溶解度影响和介稳区宽度;依次根据Nyvlt自洽方程理论求得成核级数m、经典三维成核理论求得固-液界面能γ,实验结果表明,CaCl2溶液中的NH4Cl对H3BO3溶解度影响很小;CaCl2溶液中H3BO3的介稳区宽度随着NH4Cl浓度的增加先变小后变大,氯化铵质量分数在0.12%~1.13%之间存在着一个临界值,此时硼酸的介稳区宽度最小。
In order to investigate the effect of NH4Cl in Nanyishan oilfield brine on the properties of low temperature metastable zone of H3BO3,the effect of different concentration of ammonium chloride on the solubility and metastable zone width of boric acid containing calcium chloride were determined in the temperature ranging from 253.15 K to 303.15 K by turbidity method.The nucleation order m were obtained by Self-consistent Nyvlt-like equation theory,the interfacial energyγwere calculated with classical three-dimensional nucleation theory succesfully.The experiment results showed that ammonium chloride has little influence on the solubility of boric acid in CaCl2 solution;The metastable zone width of H3BO3 in CaCl2 solution becomes smaller and then larger with the increasing of NH4Cl concentration.There is a critical value between ammonium chloride mass fraction of 0.12%~1.13%,in which the metastable zone width of boric acid is the smallest.
作者
王兴鹏
彭姣玉
陈婧
董亚萍
李武
WANG Xing-peng;PENG Jiao-Yu;CHEN Jing;DONG Ya-ping;LI Wu(Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,810008,China;Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province,Xining,810008,China;University of Chinese Academy of Sciences,Beijing,100049,China)
出处
《盐湖研究》
CSCD
2019年第3期44-51,共8页
Journal of Salt Lake Research
基金
柴达木化工联合基金项目(U1607103)
青年科学基金项目(Y520171115)
关键词
硼酸
氯化铵
介稳区
成核动力学
Boric acid
Ammonium chloride
Metastable zone
Nucleation kinetics
