Solid- Liquid equilibria of two quaternary systems LiBr-NaBr-Li2SO4- Na2SO4-H2O and LiBr-KBr-Li2SO4-K2SO4-H2O at 298.15 K

被引：5

作者：

Cui, Rui-Zhi ^{[1
,2
]}

Zhang, Yong-Ming ^{[1
,2
]}

Dong, Ya-Ping ^{[1
,3
]}

Li, Wu ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Peoples R China

[2] Key Lab Salt Lake Resources Chem Qinghai Prov, Xining 810008, Peoples R China

[3] Qinghai Engn & Technol Res Ctr Comprehens Utiliza, Xining 810008, Peoples R China

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2022年 / 165卷

基金：

中国国家自然科学基金;

关键词：

Underground brine; Solid-liquid equilibrium; Pitzer model; Solubility prediction; Lithium bromide; METASTABLE PHASE-EQUILIBRIA; HEAT-STORAGE; MODEL; CRYSTALLIZATION; SOLUBILITIES; LITHIUM; NABR; NA+;

D O I：

10.1016/j.jct.2021.106665

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, the solubility of unreported systems LiBr-NaBr-Li2SO4-Na2SO4-H2O, LiBr-KBr-Li2SO4- K2SO4-H2O and the subsystem LiBr-Li2SO4-H2O was measured by isothermal dissolution method at 298.15 K. Three phase diagrams are also given. It was found that the diagram of LiBr-Li2SO4-H2O system has only one invariant point of LiBr center dot 2H2O + Li2SO4 center dot H2O. The phase diagram of LiBr-NaBr-Li2SO4-Na2SO4- H2O system includes eight crystallization regions LiBr center dot 2H2O, Li2SO4 center dot H2O, NaBr center dot 2H2O, NaBr, Na2SO4 center dot 10H2O, Na2SO4, Li2SO4 center dot 3Na2SO4 center dot 12H2O, and Li2SO4 center dot Na2SO4. Five crystallization regions corresponded to two single salts KBr and K2SO4, two hydrate salts Li2SO4 center dot H2O and LiBr center dot 2H2O, and one double salt Li2SO4 center dot K2SO4 in LiBr-KBr-Li2SO4-K2SO4-H2O system. The relevant Pitzer parameter was obtained and the result predicted by Pitzer model was consistent with the experimental values. CO 2021 Elsevier Ltd.

引用

页数：10

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