CIESC Journal

• 化工学报 • 上一篇    下一篇

硫酸加工天然硼砂矿生产硼酸的相平衡

曹吉林,白鹏,朱慧铭,王世昌   

  1. 天津大学化学工程研究所!天津300072,天津大学化学工程研究所!天津300072,天津大学化学工程研究所!天津300072,天津大学化学工程研究所!天津300072
  • 出版日期:2000-04-25 发布日期:2000-04-25

PHASE EQUILIBRIUM IN PRODUCING BORIC ACID FROMPROCESSING NATURAL BORAX BY SULFURIC ACID

Cao Jilin,Bai Peng,Zhu Huiming and Wang Shichang(Chemical Engineering Research Center ,Tianjin University, Tianjin 300072)   

  • Online:2000-04-25 Published:2000-04-25

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 .

Abstract: 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.

中图分类号: