| Numerical Simulation of Microwave-assisted Depolymerization of Kraft Lignin |
| Received:March 26, 2021 Click here to download the full text |
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| Author Name | Affiliation | | Ma Zhenhao | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi Province, 710021, China | | Wang Wenliang | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi Province, 710021, China
Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan, Shandong Provice, 250353, China | | Huang Jiale | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi Province, 710021, China | | Ma Yujun | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi Province, 710021, China | | Miao Hui | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi Province, 710021, China | | Fu Yishuai | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi Province, 710021, China | | Ren Xiaoxiao | College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi Province, 710021, China |
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| Abstract:Kraft lignin has the potential to replace traditional fossil resources for the preparation of high-value chemicals because it is rich in aromatic rings and active functional groups. An effective method for the pyrolysis of kraft lignin into chemicals/fuels is microwave-assisted depolymerization. A simulation model is urgently needed to illustrate the coupling effect and mechanism of lignin conversion during the depolymerization process. In this study, COMSOL Multiphysics was used to simulate the microwave-assisted depolymerization process. The results showed that microwave power had a significant effect on the electric field and temperature distribution in the microwave cavity, while the reaction time had little effect on the electric field. The effect of the nitrogen flow rate on the electric field and temperature was negligible. The intensity of the electric field, heating rate of lignin, and final temperature of lignin depolymerization increased with increasing microwave power. |
| keywords:microwave depolymerization numerical simulation kraft lignin COMSOL Multiphysics |
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