高校化学工程学报2012，Vol.26Issue(3)：370-373,4.
四元水盐体系KCl-NaCl-CaCl2-H2O蒸气压测定
Vapor Pressure Determination of Quaternary Water-Salt System KCl-NaCl-CaCl2-H2O
摘要
Abstract
Water leaching solution of electro-static precipitator dust of sinter plant in iron and steel companies, which contains abundant potassium resource worthy to be paid attention to, can be taken as quaternary water-salt system KCl-NaCl-CaCl2-H2O after removal of heavy metal ions. Potassium chloride can be preliminarily separated from this quaternary system by evaporation concentration and evaporation crystallization. In order to provide a theoretical basis for controlling the separation process, the vapor pressures of the quaternary water-salt system KCl-NaCl-CaCl2-H2O with concentration of KCI, NaCl and CaCl2 in the range of 0~3 mol·L-1, 0~2 mol·L-1 and 0-1 mol·L-1, respectively, and temperature range of 303.15 ~373.15 K, were experimentally determined by static method for the first time. The dependence of vapor pressure of the quaternary water-salt system on temperature and solution composition was obtained by mathematical linear regression, which is expected for the instruction of the evaporation process.关键词
蒸气压/四元水盐体系/KCl-NaCl-CaCl2-H2O/实验测定Key words
vapor pressure/ quaternary water-salt system/ KCl-NaClCaCl2-H2O/ experimental determination分类
化学化工引用本文复制引用
彭翠,郭占成..四元水盐体系KCl-NaCl-CaCl2-H2O蒸气压测定[J].高校化学工程学报,2012,26(3):370-373,4.基金项目
国家自然科学基金(50974018) （50974018）
教育部基本科研业务费项目(ERF-AS-09-010B). （ERF-AS-09-010B）
