摘要
依据Na^+、Mg^(2+)∥Cl^-、SO_4^(2-)-H_2O四元水盐体系相图,模拟雅布赖盐湖区当地气候条件对冻硝池卤水析硝规律进行研究,发现温度对芒硝的析出率影响显著。恒温条件下,温度越低,越有利于芒硝析出。对析盐母液添加适量的水可以有效的防止卤水中NaCl的析出。当温度在-20℃至5℃之间变化时,控制加水率为15%,析硝母液中SO_4^(2-)浓度随着温度的升高而升高。当温度升至-10℃时,冰和芒硝同时析出,析硝母液中SO_4^(2-)浓度达到0.12 mol/L,芒硝析出率约为85.66%。
The rules of glauber＇s salt precipitationwas studied in the simulation of the local climate conditionswith the help of equilibrium phase diagram of the quaternary system（ Na＋,Mg2＋∥Cl-,SO42--H2O）. It was showed that that temperature had a great influence on the precipitation rate of glauber＇s salt brine. The low temperature is advantageous to the precipitation of glauber＇s saltunder the condition of constant temperature. When the temperature varied from-20 ℃ and 5 ℃,the concentration of SO42- got higher under 15% water addition ratio with the temperature increasing. The concentration of SO42- reached 0. 12 mol/L and glauber＇s salt precipitation rate was85. 66% at-10 ℃,and glauber＇s saltseparated out together.
出处
《盐科学与化工》
CAS
2017年第7期18-21,共4页
Journal of Salt Science and Chemical Industry
基金
国家海洋局海洋公益性行业科研专项(201405008-1)
天津市海洋经济创新发展区域示范项目(cxsf2014-26)
科技重大专项与工程(15ZXCXSF00040)的经费支持
关键词
雅布赖盐湖
芒硝
相图
Yabulai salt lake
glauber
phase diagram
