KCl-PEG4000-H<sub>2</sub>O三元体系288、298、308 K相平衡测定及计算

于旭东; 黄琴; 王林; 李茂兰; 郑洪; 曾英

doi:10.11949/j.issn.0438-1157.20181154

您当前的位置：

首页 >

文章列表页 >

KCl-PEG4000-H₂O三元体系288、298、308 K相平衡测定及计算

热力学 | 更新时间：2026-07-24

- KCl-PEG4000-H₂O三元体系288、298、308 K相平衡测定及计算
- Measurements and simulation for ternary system KCl-PEG4000-H₂O at 288, 298 and 308 K
- 化工学报 2019年70卷第3期页码：830-839
- 作者机构：
  
  1.成都理工大学材料与化学化工学院，四川成都 610059
  2.中国地质科学院矿产资源研究所，北京 100037
  3.四川省攀西战略矿产资源综合利用协同创新中心，四川成都 610059
- 作者简介：
  
  及第一作者：通信作者:于旭东（1985—），男，博士，副教授，xwdlyxd@126.com
- 基金信息：
  
  国家自然科学基金项目(U1507111)
- DOI：10.11949/j.issn.0438-1157.20181154
  中图分类号： O 642
- 收稿：2018-10-08，
  
  修回：2018-12-18，
  
  网络首发：2026-07-24，
  
  纸质出版：2019-03-05
- 稿件说明：
移动端阅览
于旭东, 黄琴, 王林, 李茂兰, 郑洪, 曾英. KCl-PEG4000-H₂O三元体系288、298、308 K相平衡测定及计算[J]. 化工学报, 2019, 70(3): 830-839 DOI: 10.11949/j.issn.0438-1157.20181154.

YU Xudong, HUANG Qin, WANG Lin, LI Maolan, ZHENG Hong, ZENG Ying. Measurements and simulation for ternary system KCl-PEG4000-H₂O at 288, 298 and 308 K[J]. CIESC Journal, 2019, 70(3): 830-839 DOI: 10.11949/j.issn.0438-1157.20181154.
于旭东, 黄琴, 王林, 李茂兰, 郑洪, 曾英. KCl-PEG4000-H₂O三元体系288、298、308 K相平衡测定及计算[J]. 化工学报, 2019, 70(3): 830-839 DOI: 10.11949/j.issn.0438-1157.20181154. DOI：

YU Xudong, HUANG Qin, WANG Lin, LI Maolan, ZHENG Hong, ZENG Ying. Measurements and simulation for ternary system KCl-PEG4000-H₂O at 288, 298 and 308 K[J]. CIESC Journal, 2019, 70(3): 830-839 DOI: 10.11949/j.issn.0438-1157.20181154. DOI：

摘要

采用等温溶解平衡法研究了288、298、308 K下三元体系KCl-PEG4000-H

O的相平衡关系，绘制了相应的相图、密度-组成图和折射率-组成图。研究发现：288、298、308 K下，三元体系KCl-PEG4000-H

O无分层现象，只存在固液相平衡关系，其平衡相图由不饱和液相区(L)、一固一液区(S+L)和两固一液区(2S+L)构成，且两固一液区随温度升高减小。KCl溶解度随着溶液中PEG4000含量不断增加而减小。溶液中PEG4000含量小于0.50时，盐析率受温度影响较小；含量大于0.50时，盐析率随着温度升高呈减小趋势。采用修正后的Pitzer方程进行了三元体系KCl-PEG4000-H

O (288、298、308 K)溶解度计算，对比发现，理论计算值与实验值吻合较好。

Abstract

The phase equilibr

ium relationship of the ternary system KCl-PEG4000-H

O at 288

298 and 308 K was studied by isothermal dissolution equilibrium method. The corresponding phase diagram

density-composition diagram and refractive index-composition diagram were drawn. The results show that over the entire PEG 4000 composition rang studied only one liquid phase is obtained

without the biphase region formed at 288

298 and 308 K. The phase diagram of system KCl-PEG4000-H

O consists of one homogeneous area with unsaturated liquid (L)

an equilibrium area containing the solid phase of KCl and saturated liquid phase (S+L)

one area with one liquid phase and two solid phases(2S+L). The area of (2S+L) decrease with the increasing of temperature

while the areas of (L) and (S+L) increase with the increasing of temperature. The solubility of KCl decreases with the addition of PEG 4000 at 288

298 and 308 K. When

PEG4000

in the solution is less than 0.50

the temperature has little effect on the salting-out ratio of the system

while when

PEG4000

is higher than 0.50

the salting-out ratio of the system decreases with the increasing of temperature. The thermodynamics calculation of equilibrium data of system KCl-PEG4000-H

O at 288

298 and 308 K was carried out by using the modified Pitzer equation

it can be seen from the comparison of experimental and calculation diagrams that the predictive solubilities agree well with the experimental values.

关键词

Keywords

references

侯献华 , 樊馥 , 郑绵平 , 等 . 青海盐湖钾盐资源开发利用及产业发展 [J ] . 科技导报 , 2017 , 35 ( 12 ): 67 - 71 .

Hou X H , Fan F , Zheng M P , et al . Development and utilization of potash resources of saline lakes in Qinghai province [J ] . Sci. Technol. Rev . 2017 , 35 ( 12 ): 67 - 71 .

Farelo F , Fernandes C , Avelino A . Solubilities for six ternary systems: NaCl + NH 4 Cl + H 2 O, KCl + NH 4 Cl + H 2 O, NaCl + LiCl + H 2 O, KCl + LiCl + H 2 O, NaCl + AlCl 3 + H 2 O, NaCl + AlCl 3 + H 2 O and KCl + AlCl 3 + H 2 O at T = (298 to 333) K [J ] . J. Chem . Eng. Data ., 2005 , 50 ( 4 ): 1470 - 1477 .

Yang H T , Liang T Y , Zeng D W , et al . Phase diagram of the quaternary system LiCl + MgCl 2 + KCl +H 2 O at 323.15 K [J ] . CALPHAD: Comput. Coupling Phase Diagrams Thermochem ., 2017 , 57 : 126 - 133 .

Meng L Z , Li D , Deng T L , et al . Solubility calculation for the brine system Na + , K + //Cl – , Br – -H 2 O using Pitzer thermodynamic model [J ] . J. Chem . Eng. Jpn ., 2018 , 51 ( 3 ): 185 - 189 .

桑世华 , 张婷婷 , 傅超 , 等 . 四元体系Li + , K + , Mg 2+ //B 4 O 7 2– -H 2 O 273 K相平衡 [J ] . 化工学报 , 2017 , 68 ( 9 ): 3343 - 3349 .

Sang S H , Zhang T T , Fu C , et al . Phase equilibria in quaternary system Li + , K + , Mg 2+ //B 4 O 7 2– -H 2 O at 273 K [J ] . CIESC Journal , 2017 , 68 ( 9 ): 3343 - 3349 .

Zhang X , Sang S H , Zhong S Y , et al . Equilibria in the ternary system SrCl 2- KCl-H 2 O and the quaternary system SrCl 2 -KCl-NaCl-H 2 O at 323 K [J ] . Russ . J . Phys . Chem . A , 2015 , 89 ( 12 ): 2322 - 2326 .

于旭东 , 刘敏 , 王林 , 等 . 三元体系硼酸钾+硼酸铷+水和硼酸铷+硼酸镁+水323 K相平衡 [J ] . 高校化学工程学报 , 2018 , 32 ( 3 ): 514 - 521 .

Yu X D , Liu M , Wang L , et al . Phase equilibria of potassium borate + rubidium borate + H 2 O and rubidium borate + magnesium borate + H 2 O aqueoue ternary systems at 323 K [J ] . J. Chem . Eng. Chin. Univ ., 2018 , 32 ( 3 ): 514 - 521 .

Guo S S , Yu X D , Zeng Y . Phase equilibria for the aqueous reciprocal quaternary system K + , Mg 2+ //Cl - , Borate-H 2 O at 298 K [J ] . J. Chem . Eng. Data , 2016 , 61 ( 4 ): 1566 - 1572 .

Yu X D , Zeng Y , Guo S S , et al . Stable phase equilibrium and phase diagram of the quinary system Li + , K + , Rb + , Mg 2+ //borate - H 2 O at T=348.15 K [J ] . J. Chem . Eng. Data , 2016 , 61 ( 3 ): 1246 - 1253 .

Yu X D , Zeng Y , Chen P J , et al . Solid-liquid equilibrium of the quaternary system lithium, potassium, rubidium, and borate at T = 323 K [J ] . J. Chem . Eng. Data , 2018 , 63 ( 8 ): 3125 - 3129 .

Yu X D , Zeng Y , Mu P T , et al . Solid-liquid equilibria in the quinary system LiCl-KCl-RbCl-MgCl 2 -H 2 O at T = 323 K [J ] . Fluid Phase Equilib ., 2015 , 387 : 88 - 94 .

Li Z Q , Yu X D , Yin Q H , et al . Thermodynamics metastable phase equilibria of aqueous quaternary system LiCl + KCl + RbCl+ H 2 O at 323.15 K [J ] . Fluid Phase Equilib ., 2013 , 358 : 131 - 136 .

任永胜 , 何婷婷 , 谢娟 , 等 . 333.15 K K + , NH 4 + //Cl – , SO 4 2– -H 2 O和K + , NH 4 + //Cl – , SO 4 2– -(CH 2 OH) 2 -H 2 O体系固液相平衡 [J ] . 化工学报 , 2018 , 69 ( 7 ): 2838 - 2850 .

Ren Y S , He T T , Xie J , et al . Phase equilibria in systems K + , NH 4 + //Cl – , SO 4 2– -H 2 O and K + , NH 4 + //Cl – , SO 4 2- -(CH 2 OH) 2 -H 2 O at 333.15 K [J ] . CIESC Journal , 2018 , 69 ( 7 ): 2838 - 2850 .

Sampaio V S , Bonomo R C F , Monteiro Filho E S , et al . Phyical properties and liquid-liquid equilibrium of aqueous two-phase systems containing poly(ethylene glycol) + potassium chloride + sodium polyacrylate [J ] . J. Chem . Eng. Data , 2012 , 57 ( 12 ): 3651 - 3657 .

雷红 , 李淑妮 , 翟全国 , 等 . 298.15和308.15 K时1,2-丙二醇 + MCl (M=Na, K, Rb, Cs) + H 2 O三元体系的溶解度、密度和折射率 [J ] . 物理化学学报 , 2012 , 28 ( 7 ): 1599 - 1607 .

Lei H , Li S N , Zhai Q G , et al . Solibility, density and refractive index for the ternary systems of 1,2-propanediol, MCl (M=Na, K, Rb, Cs) and H 2 O at 298.15 and 308.15 K [J ] . Acta Phys. -Chim. Sin ., 2012 , 28 ( 7 ): 1599 - 1607 .

Taboada M E , Galleguillos H R , Graber T A . Compositions, densities, conductivities, and refractive indices of potassium chloride or/and sodium chloride +PEG4000 + water at 298.15 and liquid-liquid equilibrium of potassium chloride or sodium chloride +PEG4000 + water at 333.15 K [J ] . J. Chem . Eng. Data , 2005 , 50 ( 1 ): 264 - 269 .

Hernandes-Luis F , Rodriguez-Raposo R , Galleguillos H , et al . Acivity coefficients of KCl in PEG4000 + water mixtures at 288.15, 298.15 and 308.15 K [J ] . Fluid Phase Equilib ., 2010 , 295 : 163 - 171 .

Lovera J A , Padilla A P , Galleguillos H , et al . Correlation of the solubilities of alkali chlorides in mixed solvents: polyethylene glycol + H 2 O and ethanol + H 2 O [J ] . CALPHAD: Comput. Coupling Phase Diagrams Thermochem ., 2012 , 38 : 35 - 42 .

Wu Y T , Lin D Q , Zhu Z Q , et al . Prediction of liquid-liquid equilibria of polymer-salt aqueous two-phase systms by modified Pitzer’s virial equation [J ] . Fluid Phase Equilib ., 1996 , 124 : 67 - 79 .

Fosbol P L , Thomsen K , Stenby E H . Reverse schreinemakers method for experimental analysis of mixed-solvent electrolyte systems [J ] . J. Solution Chem ., 2009 , 38 ( 1 ): 1 - 14 .

中国科学院青海盐湖研究所 . 卤水和盐的分析方法(第二版) [M ] . 北京 : 科学出版社 , 1988 : 69 - 72 .

Institute of Qinghai Salt-Lake of Chinese Academy of Sciences . Analytical Methods of Brines and Salts (2nd ed) [M ] . Beijing : Chinese Science Press , 1988 : 69 - 72 .

Cheluget E L , Gelinas S , Vera J H , et al . Liquid-liquid equilibrium of aqueous mixtures of poly(propylene glycol) with NaCl [J ] . J. Chem . Eng. Data , 1994 , 39 ( 1 ): 127 - 130 .

Deng T L , Li D C , Wang S Q . Metastable phase equilibrium in the aqueous ternary system (KCl-CaCl 2- H 2 O) at (288.15 and 308.15) K [J ] . J. Chem . Eng. Data , 2008 , 53 ( 4 ): 1007 - 1011 .

Long J , Tang J H , You Y K , et al . Phase equilibrium in the aqueous ternary system KH 2 PO 4 +KCl+H 2 O at (288.15 and 303.15) K [J ] . J. Chem . Eng. Data , 2015 , 60 ( 6 ): 1906 - 1909 .

Shen W , Ren Y S , Zhang X R , et al . Solid-liquid phase equilibrium for the ternary system (potassium chloride + potassium dihydrogen phosphate + water) at (298.15 and 313.15) K [J ] . J. Chem . Eng. Data , 2015 , 60 ( 7 ): 2070 - 2078 .

Lin S Q , Tang J H , Teng J , et al . Phase equilibrium in the system KH 2 PO 4 + KCl +H 3 PO 4 at 298.15 K and 308.15 K [J ] . J. Chem . Eng. Data , 2017 , 62 ( 12 ): 4169 - 4173 .

Jia X Y , Li J , Jin Y , et al . Solid-liquid equilibria in the quaternary system Na + , K +// HPO 4 2– , Cl – -H 2 O and its subsystems Na +// HPO 4 2– , Cl – -H 2 O, K + //HPO 4 2– , Cl – -H 2 O, and Na + , K + //HPO 4 2– -H 2 O at 298.2 K [J ] . J. Chem . Eng. Data , 2017 , 62 ( 11 ): 3679 - 3686 .

Meng R , Li S N , Zhai Q G , et al . Solubilities, densities, and refractive indices for the ternary systems glycerin + MCl + H 2 O (M=Na, K, Rb, Cs) at (298.15 and 308.15) K [J ] . J. Chem . Eng. Data , 2011 , 56 ( 12 ): 4643 - 4650 .

Pitzer K S . Thermodynamics of electrolytes. I. Theoretical basis and general equations [J ] . J. Phys. Chem ., 1973 , 77 ( 2 ): 268 - 277 .

Harive C E , Eugster H P , Weare J H . Mineral equilibria in the six-component seawater system, Na-K-Mg-Ca-SO 4 -Cl-H 2 O at 25℃. II: Compositions of the saturated solutions [J ] . Geochim. Cosmochim. Acta ., 1982 , 46 ( 9 ): 1603 - 1618 .

Clegg S L , Rard J A , Miller D G . Isopiestic determination of the osmotic and activity coefficients of NaCl+SrCl 2 +H 2 O at 298 . 15K and representation with an extended ion-interaction model . J . Chem. Eng. Data , 2005 , 50 ( 4 ): 1162 - 1170 .

Krevelen D W V , Nijehuis K T . Properties of Polymers: Their Correlation with Chemical Structure; Their Numerical Estimation and Prediction from Additive Group Contributions [M ] . (4th ed). Amsterdam : Elsevier , 2009 : 319 - 321 .

Guo L J , Han H J , Dong O Y , et al . Thermodynamics and phase equilibrium of the high concentration solid solution-aqueous solution system KCl-RbCl-H 2 O from T = 298.15 K to T = 323.15 K [J ] . J. Chem. Thermodyn ., 2016 , 106 : 285 - 294 .

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

CsCl-PEG8000-H2O三元体系288.2、298.2、308.2 K相平衡测定

四元体系LiCl+MgCl2+CaCl2+H2O 323.2 K相平衡研究及计算

308.2 K三元体系KCl+PEG10000/20000+H2O相平衡及热力学计算

298.2 K四元体系MgCl2-SrCl2-AlCl3-H2O相平衡实验及溶解度计算

钙循环热化学储能载能体放热特性研究

KCl-PEG4000-H2O三元体系288、298、308 K相平衡测定及计算

Measurements and simulation for ternary system KCl-PEG4000-H2O at 288, 298 and 308 K

DOI：10.11949/j.issn.0438-1157.20181154

摘要

Abstract

关键词

Keywords

references

KCl-PEG4000-H₂O三元体系288、298、308 K相平衡测定及计算

Measurements and simulation for ternary system KCl-PEG4000-H₂O at 288, 298 and 308 K