LiCl + CaCl + H₂O体系的气液平衡研究

Vapor-Liquid Equilibria Study of the LiCl + CaCl + HO System.

作者信息

Xu Xianzhen, Wang Yan, Sun Xiangyu, Zhou Yu

机构信息

Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, College of Chemistry and Chemical Engineering and College of Applied Technology, Department of Chemical Engineering, Qingdao University, Qingdao 266071, China.

出版信息

ACS Omega. 2019 Feb 28;4(2):4390-4396. doi: 10.1021/acsomega.8b03570.

DOI:10.1021/acsomega.8b03570

PMID:31459638

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6648044/

Abstract

Vapor-liquid equilibrium (VLE) data are measured and reported for the LiCl + CaCl + HO system. The experimental procedures were carried out with pressures between 6 and 101.3 kPa in a computer-controlled glass apparatus. We obtained the relationship between solubility of salt and vapor pressure by analyzing and summarizing the results. Then, a modified NRTL model based on the hypothesis of hydration was used in this paper. By correlation of literature and experimental data for LiCl + HO, CaCl + HO, and LiCl + CaCl + HO (pressure spanning from 5 to 101.3 kPa), some parameters were modified for improving the accuracy of the calculation. Meanwhile, the model was successfully applied to predict the VLE data in LiCl + CaCl + HO systems with the modified binary parameters.

摘要

测量并报告了LiCl + CaCl₂ + H₂O体系的气液平衡（VLE）数据。实验过程在计算机控制的玻璃仪器中进行，压力范围为6至101.3 kPa。通过分析和总结结果，我们得到了盐的溶解度与蒸气压之间的关系。然后，本文使用了基于水合假设的改进型NRTL模型。通过关联LiCl + H₂O、CaCl₂ + H₂O以及LiCl + CaCl₂ + H₂O（压力范围为5至101.3 kPa）的文献和实验数据，对一些参数进行了修正以提高计算精度。同时，该模型成功应用于使用修正后的二元参数预测LiCl + CaCl₂ + H₂O体系中的VLE数据。