Ethylene Glycol Recovery from 2-Ethyl-1,3-dioxolane Hydrolysis via Reactive Distillation: Pilot-Scale Experiments and Process Analysis
| Autor: | Hong Li, Runnan Zhao, Xingang Li, Xin Gao, Rui Wang, Yutao Yan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Fractional distillation
Chemistry General Chemical Engineering 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering Catalysis Chemical kinetics Hydrolysis chemistry.chemical_compound 020401 chemical engineering Chemical engineering Dioxolane Reactive distillation Non-random two-liquid model 0204 chemical engineering 0210 nano-technology Ethylene glycol |
| Zdroj: | Industrial & Engineering Chemistry Research. 58:20746-20757 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/acs.iecr.9b04420 |
| Popis: | EG is an important industrial raw material and the hydrolysis of 2-ethyl-1,3-dioxolane(2ED) to re-obtain EG is a very important step to recovery EG from EG and 1, 2-BDO azeotropic mixture via reversible reaction-assisted intensification process. The applicability of reactive distillation for 2ED hydrolysis in the presence of KRD-002 ion-exchange is studied by experiments and simulations. The reaction kinetics were investigated, and the kinetic parameters were derived. Thermodynamic aspects of the reaction system were discussed, and NRTL model was built. Pilot-plant reactive distillation experiments were performed by using the structured catalytic packing unit (SCPI) with several operating conditions variation (RR (reflux ratio), FMR (feed mole ratio) and feed-in style). The experimental results are in good agreement with the simulation results, which prove that the equilibrium stage model can describe the hydrolysis experiments quantitatively. The simulation was subsequently used to determine the influenc... |
| Databáze: | OpenAIRE |
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