The Effects of NaI, KBr, and KI Salts on the Vapor-Liquid Equilibrium of the H(2)O+CH(3)OH System

The vapor–liquid equilibrium (VLE) in chemical engineering is indispensable for the design of equilibrium separation processes such as distillation, absorption, extraction, and crystallization. VLE data were measured for H(2)O+CH(3)OH+NaI, H(2)O+CH(3)OH+KBr, and H(2)O+CH(3)OH+KI systems. By analyzin...

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Detalles Bibliográficos
Autores principales: Xu, Xianzhen, Zhang, Na, Zhou, Yu, Wang, Yan, Wang, Zonghua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7154104/
https://www.ncbi.nlm.nih.gov/pubmed/32318541
http://dx.doi.org/10.3389/fchem.2020.00192
Descripción
Sumario:The vapor–liquid equilibrium (VLE) in chemical engineering is indispensable for the design of equilibrium separation processes such as distillation, absorption, extraction, and crystallization. VLE data were measured for H(2)O+CH(3)OH+NaI, H(2)O+CH(3)OH+KBr, and H(2)O+CH(3)OH+KI systems. By analyzing and summarizing the results of H(2)O+Methanol+Alkali metal halide systems, the salt effects of NaI, KBr, and KI on the vapor–liquid equilibrium were obtained. Simultaneously, a model based on the NRTL equation (non-random two liquid) was proposed to correlate and calculate the VLE for the systems. In addition, the assumption of solvation based on hydration was introduced in this model. The proposed model can be successfully used to calculate the VLE for H(2)O+Methanol+Alkali metal halide systems.

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