Numerical modeling of a downdraft plasma coal gasifier with plasma reactions |
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| Affiliation: | 1. Anadolu Plasma Technology Center, Gazi University Technopark Ankara, Turkey;2. Gazi University, Faculty of Engineering, Department of Mechanical Engineering Ankara, Turkey;1. State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, No. 15 Beisihuanxi Road, Beijing, 100190, China;2. School of Engineering Science, University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing, 100049, China;1. State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, No.15 Beisihuanxi Road, Beijing, 100190, China;2. School of Engineering Science, University of Chinese Academy of Sciences, 19 A Yuquan Road, Beijing, 100049, China;1. Laboratory of Optimization of Energy Systems (LOSE), Department of Energy, School of Engineering and Institute of Bioenergy Research (IPBEN-UNESP)-Associated Laboratory of Guaratinguetá, Sao Paulo State University (UNESP), SP, Brazil;2. Waste Revaluation Center, Federal University of ABC (UFABC), Brazil;3. Department of Environmental Engineering, Institute of Science and Technology, São José dos Campos, Sao Paulo State University (UNESP), SP, Brazil;1. Department of Chemistry and Chemical Engineering and Regional Innovation Center for Environmental Technology of Thermal Plasma (RIC-ETTP), INHA University, 100 Inha-ro, Nam-gu, Incheon, 402-751, Republic of Korea;2. Department of Nuclear and Energy Engineering, Jeju National University, 102 Jejudaehak-ro, Jeju-si, Jeju Special Self-Governing Province, 690-756, Republic of Korea;1. Combustion Problems Institute, Almaty, Kazakhstan;2. Institute of Thermophysics of SB RAS, Novosibirsk, Russia;3. A.V. Luikov Heat and Mass Transfer Institute, NAS of Belarus, Minsk, Belarus;4. Plasmatechnics R&D LLP, Institute of Experimental and Theoretical Physics, al-Farabi Kazakh National University, Almaty, Kazakhstan |
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| Abstract: | In this paper, a 3D numerical simulation of a downdraft plasma gasifier with plasma reactions is conducted. The effects of the equivalence ratio (ER) on the syngas properties in the presence of the plasma reactions are investigated. The boundary conditions for the air plasma inlet of the gasifier are obtained from the outlet of a 10 kW microwave plasma generator. A conventional gasification analysis is carried out to validate the model. In the second part of the study, plasma reactions are added to conventional gasification equations. Mole fractions of the constituents of the syngas and temperature contours are obtained for different ER values. According to the results, with the increase of ER from 0.20 to 0.45 the lower heating value of the produced syngas decreased from 1536.6 kcal/m3 to 751.8 kcal/m3. |
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| Keywords: | Gasification Plasma Coal Equivalence ratio Fossil hydrogen Clean coal |
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