On the integration of jet ejectors into hybrid dehydration processes |
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| Institution: | 1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;2. Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China;3. China Tianchen Engineering Corporation (Beijing Branch), Beijing 100029, China;1. Laboratoire Génie Civil Génie Mécanique, INSA de Rennes et Université de Rennes 1, France;2. Laboratoire d''Energétique Appliquée, Ecole Supérieure Polytechnique, Université Cheikh Anta Diop de Dakar, Sénégal;3. Institut des Sciences Chimiques de Rennes (UMR CNRS 6226), Université de Rennes 1, ENSCR, France;1. School of Control Science and Engineering, Shandong University, Jinan 250061, China;2. EXQUISITUS, Centre for E-City, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798;3. School of Power and Energy, Shandong University, Jinan 250061, China |
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| Abstract: | Hybrid processes of distillation and membrane separation are considered as promising alternatives to azeotropic and extractive distillation. However, the membrane process, which is basically pervaporation or vapor permeation, is still a niche operation with a limited number of applications. The relatively high cost of the membrane units, and the lack of long time industrial experience are the main obstacles. Great efforts are being undertaken to improve the membrane properties and to optimize the membrane process. Additional savings in the effective cost of the membrane unit could be achieved by its proper integration into the overall process. In this work, the use of steam jet ejectors as a process integration alternative for hybrid dehydration processes is investigated. Favorable implementation regions are defined. Advantages and limitations of this modification are discussed. |
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