Back to Search
Start Over
Design and multi-objective optimization of reactive pressure-swing distillation process for separating tetrahydrofuran-methanol-water.
- Source :
-
Separation & Purification Technology . Jan2024, Vol. 329, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- [Display omitted] • A novel and energy-saving reactive pressure-swing distillation process was designed for separating the THF-methanol-water mixture. • Energy consumption was greatly reduced by multi-objective genetic algorithm and heat-integrated optimization. • The total annual cost of the designed two heat integration processes for the RPSD-B was greatly reduced, i.e., 45.9% and 52.2%, respectively. • The water in THF-methanol-water was fully utilized to react with ethylene oxide to generate by-product EG. The low-energy and low-cost process development and design has always been a hot topic and challenge in separating azeotropic systems in the world. In this paper, a novel, energy-saving reactive pressure-swing distillation (RPSD) was, for the first time, designed for separating the ternary mixture of tetrahydrofuran (THF)-methanol–water. In the reactive distillation column, the process of reacting water with ethylene oxide to produce ethylene glycol for the first time was used to separate THF-methanol–water mixture, then the residual mixtures were separated by two pressure-swing distillation columns. Two feasible RPSD separation processes were investigated in terms of thermodynamic modeling and T-xy phase diagram analysis to achieve optimal separation sequence. The two designed separation processes were optimized by a multi-objective genetic algorithm and heat integration to maximize economic benefit. Results demonstrated that, compared to the conventional pressure-swing distillation process, the total annual cost of the designed two heat-integrated processes based on the RPSD-B process were greatly reduced, i.e., 45.9% and 52.2%, respectively. This paper has important guiding significance for the separation and purification of multicomponent azeotropes. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13835866
- Volume :
- 329
- Database :
- Academic Search Index
- Journal :
- Separation & Purification Technology
- Publication Type :
- Academic Journal
- Accession number :
- 173691902
- Full Text :
- https://doi.org/10.1016/j.seppur.2023.125160