Evaluation of hydrogen production with iron-based chemical looping fed by different biomass |
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| Affiliation: | 1. Faculty of Mechanical Engineering, Yildiz Technical University, Besiktas, Istanbul, Turkey;2. Faculty of Engineering and Applied Science, Ontario Tech. University, Oshawa, Ontario, Canada;1. Bilecik Seyh Edebali University, Chemical Engineering Department, Bilecik, 11230, Turkey;2. Eskisehir Technical University, Chemical Engineering Department, Eskisehir, 26555, Turkey;1. Key Laboratory of Renewable Energy, Chinese Academy of Sciences (CAS), Guangzhou Institute of Energy Conversion, CAS, China;2. Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, CAS, China;3. Thermal & Environmental Engineering Institute, Tongji University, China;4. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, China;5. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, China |
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| Abstract: | In this study, the iron-based chemical looping process driven by various biomasses for hydrogen production purposes is studied and evaluated thermodynamically through energy and exergy approaches. The overall system consists of some key units (combustor, reducers and oxidizer) a torrefier, a drying chamber, an air separation unit, a heat exchanger, and auxiliary units as well. The biomasses considered are first dried and torrified in the drying chamber and sent to reactors to produce hydrogen. The exergy and energy efficiencies of the iron based chemical looping facility are investigated comparatively for performance evaluation. The maximum exergy destruction and entropy production rates are calculated for the torrefaction process as 123.15 MW and 4926 kW/K respectively. Under the steady–state conditions, a total of 8 kg/s hydrogen is produced via chemical looping process. The highest energy efficiency is obtained in the looping of rice husk with 86% while the highest exergy efficiency is obtained in the looping using sugarcane bagasse with 91%, respectively. |
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| Keywords: | Biomass Efficiency Energy Exergy Hydrogen production Iron-based chemical looping process |
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