[摘　　要]：

Previous work has proved that the preparation method of anhydrous magnesium chloride by using the thermal decomposition of the complex [HAE]Cl·MgCl2·6H2O is a potential process for commercial application. Normally, the complex [HAE]Cl·MgCl2·6H2O is synthesized by reaction crystallization of aniline hydrochloride (C6H5NH2·HCl, [HAE]Cl) and bischofite (MgCl2·6H2O). The study on the solubility of [HAE]Cl in hydrochloric acid and various chloride salt solutions plays a significant role in the development, analysis, and engineering design ......更多

Previous work has proved that the preparation method of anhydrous magnesium chloride by using the thermal decomposition of the complex [HAE]Cl·MgCl₂·6H₂O is a potential process for commercial application. Normally, the complex [HAE]Cl·MgCl₂·6H₂O is synthesized by reaction crystallization of aniline hydrochloride (C₆H₅NH₂·HCl, [HAE]Cl) and bischofite (MgCl₂·6H₂O). The study on the solubility of [HAE]Cl in hydrochloric acid and various chloride salt solutions plays a significant role in the development, analysis, and engineering design for this new process. This work is a continuation of our systematic study of the solubility of [HAE]Cl in different chloride media. The solubility of [HAE]Cl in different concentrations of HCl (1.19–6.98 mol·kg^–1), NaCl (0.5–3.8 mol·kg^–1), CaCl₂ (0.5–4.5 mol·kg^–1), AlCl₃ (0.5–2.8 mol·kg^–1), and their mixed solutions was determined using a dynamic method in the temperature range from 288 to 348 K. With the purpose of improving AspenPlus’s prediction capability, in regard to [HAE]Cl solubility data in the H–Mg–Na–Ca–Al–Cl–H₂O systems at various temperatures, new model parameters were obtained via the regression of the experimental solubility of [HAE]Cl in single electrolyte solutions, such as HCl, NaCl, CaCl₂, and AlCl₃, under atmospheric pressure. With the newly obtained electrolyte NRTL (ENRTL) interaction parameters for [HAE]Cl–NaCl, [HAE]Cl–CaCl₂, [HAE]Cl–AlCl₃, and AlCl₃–H₂O, and default parameters for NaCl–H₂O and CaCl₂–H₂O in AspenPlus, a self-consistent model for the system [HAE]–H–Mg–Na–Ca–Al–Cl–H₂O was established with the maximum relative deviation of 4.3% between experimental and predicted solubility values.