溴化锂+水以及溴化锂+氯化钙+水体系的气液平衡研究

Vapor-Liquid Equilibrium Study of LiBr + HO and LiBr + CaCl + HO Systems.

作者信息

Wang Huinan, Chen Hongfei, Chen Wanhao, Sun Haoran, Xu Xianzhen

机构信息

Laboratory of Fiber Materials and Modern Textile, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Collaborative Innovation Center for Marine Biomass Fiber Materials and Textiles, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, China.

出版信息

Front Chem. 2020 Jan 23;7:890. doi: 10.3389/fchem.2019.00890. eCollection 2019.

DOI:10.3389/fchem.2019.00890

PMID:32039138

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6989471/

Abstract

Vapor-liquid equilibrium (VLE) data and modeling for LiBr + HO and LiBr + CaCl + HO are reported in this paper. This work focuses on the experimental determination of the boiling point of LiBr + HO and LiBr + CaCl + HO solutions with vapor pressures between 6 and 101.3 kPa and the total molality of salt ranging from 0 to 21.05 mol•kg. The procedures were carried out in a computer-controlled glass apparatus. The relationship between the boiling point and saturated vapor pressure is obtained, and Xu's model is used to correlate and predict the VLE. By correlation of the data (literature and experimental) for LiBr + HO and LiBr + CaCl + HO, the parameters are obtained. We compared the results with the ElecNRTL model and Pitzer model. The parameters for the LiBr + HO, CaCl + HO, and LiBr + CaCl + HO systems can be successfully used to calculate and predict the VLE data.

摘要

本文报道了LiBr + H₂O以及LiBr + CaCl₂ + H₂O的气液平衡（VLE）数据及模型。这项工作重点在于实验测定LiBr + H₂O和LiBr + CaCl₂ + H₂O溶液在6至101.3 kPa蒸汽压以及盐的总质量摩尔浓度为0至21.05 mol•kg⁻¹时的沸点。实验过程在计算机控制的玻璃仪器中进行。得到了沸点与饱和蒸汽压之间的关系，并使用徐氏模型对气液平衡进行关联和预测。通过对LiBr + H₂O和LiBr + CaCl₂ + H₂O的数据（文献数据和实验数据）进行关联，获得了相关参数。我们将结果与ElecNRTL模型和Pitzer模型进行了比较。LiBr + H₂O、CaCl₂ + H₂O以及LiBr + CaCl₂ + H₂O体系的参数可成功用于计算和预测气液平衡数据。