三元体系K_2CO_3-KHCO_3-H_2O289K时相平衡的研究  

Phase Equilibrium of theTernary System K_2CO_3-KHCO_3-H_2O at 289 K

作　　者：张茜[1] 万亚珍[1] 石杰[1] 赵曼[1] 

机构地区：[1]郑州大学化学工程与能源学院,河南郑州450001

出　　处：《河南化工》2011年第17期37-39,共3页Henan Chemical Industry

基　　金：2010年河南省重点攻关项目(102101210100)

摘　　要：为利用Engel复盐法制备碳酸钾,本文研究了三元体系K2CO3-KHCO3-H2O在KHCO3在289 K时的相平衡,并测定溶液密度,绘制出体系的溶解度图和溶液密度—组成关系图,通过相图研究得出三元体系的共饱点及相关性质,为最终获得生产相图奠定基础。The ternary systems K2CO3 -KHCO3 -H2O at 289 K are studied the density of the phase equi- librium solutions for the preparation of potash using engel double salt are determined, the equilibrium figure of the ternary systems K2CO3 - KHCO3 - H2O and the densities of the equilibrium solutions in this systems,is to drawed up through studies and get ternary systems＇related properties ,which lays the foundation for the obtaining of the final phase diagram in production.

关 键 词：碳酸钾 碳酸氢钾 相平衡 三元相图 

分 类 号：TQ114.34[化学工程—无机化工]