摘要
氯化钠盐析方法能够提高湿法合成过碳酸钠时过氧化氢的利用率,为了便于Na2CO3-NaCl-H2O2-H2O四元体系相图对实际生产的指导设计,本文对该体系的溶解度进行了计算.以Pitzer电解质溶液理论为基础,引入离子强度函数来表达两电解质之间及电解质与非电解质之间的作用系数,分别用Na2CO3-H2O2-H2O、NaCl-H2O2-H2O和Na2CO3-NaCl-H2O三元子体系的溶解度数据对作用系数进行了回归,预测了15℃和25℃时Na2CO3-NaCl-H2O2-H2O四元体系的溶解度,计算值与实验测定值相吻合.
The utilization ratio of hydrogen peroxide can be improved effectively in wet process production of sodium percarbonate by sodium chloride salting out mehod.In order to the phase diagrams of Na2CO3-NaCl-H2O2-H2O system to guide the actual production and design,the solubility calculations of Na2CO3-NaCl-H2O2-H2O system was carried out.On the basis of Pitzer model of electrolyte solution principle,ionic strength is introduced to express the interaction parameters between two kinds of electrolyte and those bet...
出处
《河北工业大学学报》
CAS
北大核心
2010年第4期43-47,共5页
Journal of Hebei University of Technology
基金
国家自然科学基金(20676025)
河北省自然科学基金(B2008000033)
关键词
过碳酸钠
过氧化氢
溶解度计算
相平衡
Pitzer
sodium percarbonate
hydrogen peroxide
solubility calculation
phase equilibrium
Pitzer model
