Isothermal Evaporation Process Simulation Using the Pitzer Model for the Quinary System LiCl–NaCl–KCl–SrCl<sub>2</sub>–H<sub>2</sub>O at 298.15 K

Солиев

2020

Braz. J. Chem. Eng.

The phase equilibria in the quinary Na, K, Mg//Cl, SO 4-H 2 O seawater system at 0 °C were determined and a total phase equilibria diagram for the system was constructed by means of the translation method consistent with available literature data. There are seven points, 21 curves and 22 fields saturated, respectively, with 4, 3 and 2 equilibrium solid phases, for the quinary composition of the system. The constructed total phase equilibria diagram of the system was fragmented into divariant co-crystallization fields of two different solid phases and trivariant crystallization volumes of each of the solid phases at equilibrium. The structures of nine Janecke dry-salt phase diagrams were obtained by fragmentation of the total phase equilibria diagram into crystallization volumes. The comparison with the available literature data shows that, the obtained crystallization volume for halite agrees well with the available experimental data.

Section: Resultsmentioning

confidence: 99%

Phase equilibria in the sea-water Na, K, Mg//Cl, SO4–H2O quinary system at 0 °C

Солиев

2020

Braz. J. Chem. Eng.

“…The reciprocal arrangement of geometrical figures in latter volumes gives the structures of drysalt diagrams of system saturated with equilibrium solid phases. The work performed by Meng et al 3 generated diagram of the system saturated with KCl. The segment which is saturated with the latter phase is shown in Figure 10e.…”

Section: Resultsmentioning

confidence: 99%

“…In this study, we present the results of prediction of phase equilibria and construction of total phase diagrams for the three Li, Na, K, Sr//Cl–H 2 O, Li, Na, K//SO 4 , B 4 O 7 –H 2 O and Na, K, Mg//SO 4 , B 4 O 7 –H 2 O quinary systems by means of the translation method to show possible crystallization–dissolution pathways in the systems. The processes of crystallization and dissolution of salts in these systems can be identified by the principles of relevant phase equilibria.…”

Section: Introductionmentioning

confidence: 99%

Crystallization and Dissolution in Multicomponent Water–Salt Systems

Солиев

2017

J. Chem. Eng. Data

at 15 °C were investigated by means of translation method. The quinary invariant points, monovariant curves, divariant fields, and trivariant volumes which are saturated with four, three, two, and one solid phases with relevant equilibrium liquid phases, respectively, were determined in each of the systems. Two points, seven curves, and nine fields were determined in the Li, Na, K, Sr//Cl−H 2 O system at 25 °C. Six points, 18 curves, and 19 fields were found in the Li, Na, K//SO 4 , B 4 O 7 −H 2 O system at 0 °C. Seven points, 20 one curves, and 20 two fields were determined in the Na, K, Mg//SO 4 , B 4 O 7 −H 2 O system at 15 °C on the quinary level. The total phase equilibria diagrams of each of the systems were constructed. The constructed diagrams were fragmented into trivariant crystallization volumes of equilibrium solid phases. The obtained volumes reflected the structures of projected diagrams of systems saturated with relevant equilibrium solid phases and involved the recent experimental results on KCl, Li 2 B 4 O 7 along with Na 2 B 4 O 7 , and MgB 4 O 7 •9H 2 O saturated parts of the quinary systems: Li, Na, K, Sr//Cl−H 2 O at 25 °C, Li, Na, K//SO 4 , B 4 O 7 − H 2 O at 0 °C, and Na, K, Mg//SO 4 , B 4 O 7 −H 2 O at 15 °C, respectively. The obtained results clarified the reciprocal relations of phase conglomerates in the systems comprehensively.

“…Moreover, only experimental results are not adequate to reveal the relations of the nearby crystallization areas in the diagrams of complex systems. 1 Hence, there is always a need for sound theoretical elucidations which support, guide, and analyze the experimental investigations.…”

Section: Introductionmentioning

confidence: 99%

Phase Relations in the Na, K//Cl, SO₄, CO₃–H₂O Quinary System at 35 °C

2021

ACS Omega

The phase equilibria in the quinary Na, K//Cl, SO 4 , CO 3 –H 2 O system at 35 °C were determined, and a total phase equilibria diagram of the system was constructed by means of the translation method. Six points saturated with four solid phases, 19 curves saturated with three solid phases, and 21 fields saturated with two solid phases were determined in the system. Structures of dry-salt diagrams for the parts saturated with each of the nine solid phases were extracted from the total phase equilibria diagram of the system. The obtained results for the parts saturated with halite and sylvite agree well with the available literature data and verify the rest of the data obtained in this work.