Publisher DOI: 10.1016/j.cep.2021.108545
Title: Evaluation of membrane-assisted hybrid processes for the separation of a tetrahydrofuran-methanol-water mixture
Language: English
Authors: Scharzec, Bettina 
Merschhoff, David 
Henrichs, Julian 
Kappert, Emiel J. 
Skiborowski, Mirko 
Keywords: Hybrid processes;Non-ideal mixture;Optimization;Pervaporation;Ternary mixture;THF
Issue Date: Oct-2021
Source: Chemical Engineering and Processing - Process Intensification 167: 108545 (2021-10)
Journal: Chemical engineering and processing 
Abstract (english): 
The combination of pervaporation (PV) and distillation provide considerable potential for the separation of azeotropic multicomponent mixtures. However, only a proper techno-economic evaluation of these processes compared to a reference process enables a reliable evaluation of benefits. Within this work, the potential of a PV-assisted distillation process is evaluated for the mixture of tetrahydrofuran methanol and water compared to a heat-integrated pressure-swing distillation process. Since initial evaluations reveal a significant potential of the PV-assisted processes regarding the required energy demand, experimental investigations of three polymeric and two inorganic membranes were conducted. A detailed characterization of the most promising membranes PERVAP™ 4155–40 and Hybrid Silica HybSi® AR was performed, and the latter one provided the highest permeance and selectivity. Based on the derived flux models, an economical optimization was performed. Despite the energy-benefits of the PV-assisted processes, the reference process was still evaluated more favorable under the considered framework, mainly caused by high investment and cooling costs. The current study illustrates the benefits of a tight integration of model-based process design and experimental investigations. Despite possible energy savings and promising performance metrics of the membrane, an assessment of the techno-economic performance of these processes is of major importance to identify applications.
ISSN: 0255-2701
Institute: Systemverfahrenstechnik V-4 
Document Type: Article
Project: Entwicklung und Erprobung der integrierten Reaktion und Katalysatorabtrennung zur homogen katalysierten reduktiven Aminierung und Hydroaminomethylierung langkettiger Alkene in einer Miniplant (D03*) 
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