摘要
以Pitzer电解质溶液理论为基础 ,引入离子强度函数来表达高温 (1 0 0℃ )时两电解质之间及电解质与非电解质之间的作用系数 ,计算了 2 5℃和 1 0 0℃时H3BO3-Na2 SO4-NaCl-H2 O四元体系的溶解度 ,计算值与实验测定值相吻合 .应用该四元体系的相图讨论了用西藏天然硼砂生产硼酸的工艺过程 .
On the basis of Pitzer model(1973), ionic strength is introduced to express the interaction parametersbetween two kinds of electrolyte and those between electrolyte and non-electrolyte at a high temperature of 100 ℃.The solubilities of H_3BO_3-Na_2SO_4-NaCl-H_2O system at 25 ℃ and 100 ℃ are calculated,the calculated values agree with experimental results well. With this quarternary system phase diagram, the technology of producingboric acid from natural borax ore in Xizang China is discussed.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2000年第2期187-192,共6页
CIESC Journal
关键词
硼砂矿
硼酸
溶解度计算
相平衡
borax ore, boric acid, calculation of solubilities, phase equilibrium
