Solid-liquid equilibrium for the ternary systems (Na2CO3 + NaCl + H2O) and (Na2CO3 + Na2SO4 + H2O) at 313.15 K and atmospheric pressure

Cao, Jing; Ren, Yongsheng; Yu, Bingjie; Qiu, Lingshu; Ma, FeiYan

doi:10.1016/j.jct.2019.02.017

Cited by 20 publications

(18 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A T860 full-automatic point–point titrator (Hanon Instruments) was used to determine the concentration of the chloride ion of the equilibrated solution. The mass of the samples and mixed solutions was measured using an electronic balance (Sartorius BSA224s) with an uncertainty of ±0.0001 g. − A D8/ADVANCE/A25 X-ray diffraction (XRD) analyzer (Bruker, Germany) was used for the X-ray diffraction (XRD) analysis of the solid phase.…”

Section: Methodsmentioning

confidence: 99%

Solid–Liquid Phase Equilibria of NaCl–NH₄Cl–MgCl₂–H₂O and Its Subsystems NaCl–NH₄Cl–H₂O and NaCl–MgCl₂–H₂O at T = 303.15 K

Ding

Zhang

et al. 2021

J. Chem. Eng. Data

Self Cite

View full text Add to dashboard Cite

In this work, the phase equilibrium solubility data of a quaternary system NaCl–NH4Cl–MgCl2–H2O and its two ternary subsystems (NaCl–NH4Cl–H2O and NaCl–MgCl2–H2O) were measured by an isothermal solubility equilibrium method and a wet slag method. For the two ternary subsystems (NaCl–NH4Cl–H2O and NaCl–MgCl2–H2O), the solubility of the equilibrium liquid phase and physical properties (density and viscosity) are determined: this system is simple, contains a cosaturated point and three crystalline regions, and the solubility experiment data is compared with the literature values, fitting the invariant point under different temperatures. It can provide basic data for a brine system containing ammonium chloride, sodium chloride, magnesium chloride, and so on. The solubility of the quaternary system NaCl–MgCl2–NH4Cl–H2O was measured by an isothermal method, and the corresponding phase diagrams were drawn. From the phase diagrams, it is found that there are two cosaturated points and four solid-phase crystalline zones; the solid-phase crystallization region corresponds to NaCl, MgCl2·6H2O, NH4Cl, and MgCl2·NH4Cl·6H2O, respectively. The system can guide the dehydration and deamination of ammonium carnallite to produce anhydrous magnesium chloride.

show abstract

Section: Methodsmentioning

confidence: 99%

Solid–Liquid Phase Equilibria of NaCl–NH₄Cl–MgCl₂–H₂O and Its Subsystems NaCl–NH₄Cl–H₂O and NaCl–MgCl₂–H₂O at T = 303.15 K

Ding

Zhang

et al. 2021

J. Chem. Eng. Data

Self Cite

View full text Add to dashboard Cite

show abstract

“…Zeng et al and Sang et al investigated the stable phase equilibrium data for the ternary system Na 2 CO 3 -Na 2 SO 4 -H 2 O at 273.15 and 288.15 K. This system is a simple cosaturated system and does not produce a double salt or solid solution. Cao et al measured the phase equilibrium data at 308.15, 313.15, and 323.15 K. They found that when the temperature reached 308.15 K, double salt Na 2 CO 3 ·2Na 2 SO 4 appears in the ternary system. Yan studied the phase equilibrium of the ternary system MgSO 4 -Na 2 SO 4 -H 2 O at 277.15, 298.15, 306.15, 313.15, 318.15, 326.15, and 336.16 K. In this study, the measured data was compared with literature data for the ternary system MgSO 4 -Na 2 SO 4 -H 2 O at 298.15 K, and the accuracy of the experimental data was determined.…”

Section: Introductionmentioning

confidence: 99%

Stable Solid–Liquid Equilibrium of the Quaternary System Na⁺, Mg²⁺//CO₃^2–, SO₄^2––H₂O at 298.15 K

Zheng²,

Tang

et al. 2021

J. Chem. Eng. Data

View full text Add to dashboard Cite

In this study, we investigated the solid−liquid phase equilibria of the quaternary system Na + , Mg 2+ //CO 3 2− , SO 4 2− −H 2 O and its four ternary subsystems at 298.15 K and atmospheric pressure using the isothermal dissolution equilibrium method. The composition of the saturated liquid phase and wet residue composition of a series of samples were determined. A double salt is generated in the MgSO 4 -Na 2 SO 4 -H 2 O ternary system at 298.15 K, which is different from the one generated at 277.15 K. The composition of the salt was identified as Na 2 SO 4 •MgSO 4 •4H 2 O by X-ray diffraction combined with Schreinemakers' method. The phase equilibria of other ternary subsystems were also compared and discussed at different temperatures. The quaternary system Na + , Mg 2+ //CO 3 2− , SO 4 2− −H 2 O at 298.15 K has three invariant points, seven univariant curves, and five crystallization fields, corresponding to

show abstract

“…As described in the results, the solid mixtures contained carbonates. Potassium bicarbonate and sodium carbonate hydrate (Na2CO3•mH2O, m = 1, 5, 7, 10) [40,41]…”

Section: Formation Mechanism Of Coagulummentioning

confidence: 99%

“…As described in the results, the solid mixtures contained carbonates. Potassium bicarbonate and sodium carbonate hydrate (Na 2 CO 3 •mH 2 O, m = 1, 5, 7, 10) [40,41] have low melting temperatures (the endothermic peak near 160 • C in the DTA pattern matches the temperature range of potassium bicarbonate: 100-200 • C). Carbonates and chlorides, moreover, may structure eutectic systems [42,43].…”

Section: Havementioning

confidence: 99%

See 1 more Smart Citation

Coupled Thermodynamics and Phase Diagram Analysis of Gas-Duct Concretion Formation in Pyro-Processing Ironmaking and Steelmaking Dust

Wang

Hua

et al. 2021

Minerals

View full text Add to dashboard Cite

In recent years, the steel industry has accumulated approximately 100 million tons of dust annually, severely threatening the environment. Rotary kiln technology is one of the main industrial methods used to process this dust. However, some substances in flue gas congeal on the cooling wall of the gas duct and seriously affect production. In this study, the properties and formation mechanisms of the coagulum were investigated on the basis of experimental and thermodynamic analyses. The experimental results showed that the coagulum is mainly composed of chlorides (KCl, NaCl, and ZnCl2), oxides (ZnO, FeO), and carbon, with three structures: lumps, fibers, and particles. Based on a thermodynamic analysis, a reasonable explanation was proposed to clarify the formation mechanism. The liquid phase (a eutectic system of KCl–NaCl–ZnCl2), dendrites (KCl, NaCl), and particles (ZnO, FeO, C) were found to act as binders, stiffeners, and aggregates in the coagulum, respectively, constituting a composite structure. Liquids acting as binders are essential for coagulum formation, and dendrites and particles strengthen this effect. Furthermore, the eutectic system of chlorides plays a crucial role in coagulum formation. The results of the present study offer a theoretical understanding of gas-duct coagulation and will provide guidance for adopting alleviation measures.

show abstract

Solid-liquid equilibrium for the ternary systems (Na2CO3 + NaCl + H2O) and (Na2CO3 + Na2SO4 + H2O) at 313.15 K and atmospheric pressure

Cited by 20 publications

References 28 publications

Solid–Liquid Phase Equilibria of NaCl–NH₄Cl–MgCl₂–H₂O and Its Subsystems NaCl–NH₄Cl–H₂O and NaCl–MgCl₂–H₂O at T = 303.15 K

Solid–Liquid Phase Equilibria of NaCl–NH₄Cl–MgCl₂–H₂O and Its Subsystems NaCl–NH₄Cl–H₂O and NaCl–MgCl₂–H₂O at T = 303.15 K

Stable Solid–Liquid Equilibrium of the Quaternary System Na⁺, Mg²⁺//CO₃^2–, SO₄^2––H₂O at 298.15 K

Coupled Thermodynamics and Phase Diagram Analysis of Gas-Duct Concretion Formation in Pyro-Processing Ironmaking and Steelmaking Dust

Contact Info

Product

Resources

About

Solid-liquid equilibrium for the ternary systems (Na2CO3 + NaCl + H2O) and (Na2CO3 + Na2SO4 + H2O) at 313.15 K and atmospheric pressure

Cited by 20 publications

References 28 publications

Solid–Liquid Phase Equilibria of NaCl–NH4Cl–MgCl2–H2O and Its Subsystems NaCl–NH4Cl–H2O and NaCl–MgCl2–H2O at T = 303.15 K

Solid–Liquid Phase Equilibria of NaCl–NH4Cl–MgCl2–H2O and Its Subsystems NaCl–NH4Cl–H2O and NaCl–MgCl2–H2O at T = 303.15 K

Stable Solid–Liquid Equilibrium of the Quaternary System Na+, Mg2+//CO32–, SO42––H2O at 298.15 K

Coupled Thermodynamics and Phase Diagram Analysis of Gas-Duct Concretion Formation in Pyro-Processing Ironmaking and Steelmaking Dust

Contact Info

Product

Resources

About

Solid-liquid equilibrium for the ternary systems (Na2CO3 + NaCl + H2O) and (Na2CO3 + Na2SO4 + H2O) at 313.15 K and atmospheric pressure

Solid–Liquid Phase Equilibria of NaCl–NH₄Cl–MgCl₂–H₂O and Its Subsystems NaCl–NH₄Cl–H₂O and NaCl–MgCl₂–H₂O at T = 303.15 K

Solid–Liquid Phase Equilibria of NaCl–NH₄Cl–MgCl₂–H₂O and Its Subsystems NaCl–NH₄Cl–H₂O and NaCl–MgCl₂–H₂O at T = 303.15 K

Stable Solid–Liquid Equilibrium of the Quaternary System Na⁺, Mg²⁺//CO₃^2–, SO₄^2––H₂O at 298.15 K