| Autor: |
Devrim B. Kaymak, Ilayda N. Oksal, Tugba Kucuk, Eda Hosgor |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Computers & Chemical Engineering. 67:166-177 |
| ISSN: |
0098-1354 |
| DOI: |
10.1016/j.compchemeng.2014.03.026 |
| Popis: |
The binary mixture of methanol–chloroform exhibits a minimum-boiling azeotrope with ∼34 mol% methanol at 327 K under atmospheric pressure. In this paper, design and control of alternative distillation processes for separation of methanol–chloroform azeotropic mixture are explored. The steady-state and dynamic simulations are carried out with Aspen Plus and Aspen Dynamics. The comparison in terms of steady-state design is done between homogeneous extractive distillation and pressure-swing distillation processes. The pressure-swing distillation process is found significantly more economical than the homogeneous extractive distillation process. Based on results, a heat-integrated pressure-swing distillation process is considered, and found economically feasible. Thus, the dynamic comparison is done between pressure-swing distillation systems with and without heat integration. The pressure-swing distillation process without heat integration can be controlled using a basic control structure, while the heat-integrated pressure-swing distillation system requires a pressure-compensated temperature control structure. Results show that dynamic controllabilities of both processes are quite similar. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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