期刊
CHEMICAL ENGINEERING SCIENCE
卷 232, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2020.116383
关键词
Microwave reactor; Microwave heating; Microwave-assisted heterogeneous catalysis; Multiphysics modeling; Design and optimization; Process intensification
资金
- European Union [680777]
- China Scholarship Council [201706250076]
- National Natural Science Foundation of China [22008137]
The study introduces a novel rectangular traveling-wave microwave reactor (RTMR) and a design procedure. The position and matching of microwave energy input/output ports have significant impact on energy efficiency, while gas space velocity and input temperature significantly affect the temperature profile.
Microwave irradiation can intensify catalytic chemistry by selective and controlled microwave-catalytic packed-bed interaction. However, turning it to reality from laboratory to practical applications is hindered by challenges in the reactor design and scale-up. Here, we present a novel, rectangular traveling-wave microwave reactor (RTMR) and provide an easy-to-handle, 3-step design procedure of such reactor. The multiphysics model couples the electromagnetic field, heat transfer, and fluid dynamics in order to optimize the geometrical parameters and operational conditions for the microwave-assisted heterogeneous catalysis. The results show that the microwave energy input/output ports should be well-positioned and matched; otherwise, it would significantly decrease energy efficiency. In terms of microwave transmission, the RTMR presents a mix between the standing wave and the traveling-wave systems. Gas space velocity and input temperature significantly affect the temperature profile, and gas-solid temperature can present no significant difference under certain gas-solid contact. (C) 2020 The Author(s). Published by Elsevier Ltd.
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