Experimental optimization analysis on operating conditions of CO removal process from hydrogen-rich reformate |
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| Affiliation: | 1. Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, China;2. Department of New Energy and Materials, China University of Petroleum (Beijing), Beijing, 102249, China;3. CNOOC EnerTech-Drilling & Production Co. Shenzhen Branch, Shenzhen, 518055, China;4. Department of New Energy Vehicle Technology, Shenzhen Polytechnic, Shenzhen, 518055, China;1. Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, China;2. Bingtuan Industrial Technology Research Institute, Shihezi University, Shihezi, China;3. Carbon Neutralization and Environmental Catalytic Technology Laboratory, Shihezi University, Shihezi, China;1. Nikolaev Institute of Inorganic Chemistry SB RAS, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia;2. Boreskov Institute of Catalysis SB RAS, 5, Pr. Lavrentieva, Novosibirsk, 630090, Russia;3. Novosibirsk State University, Pirogova St., 2, Novosibirsk, 630090, Russia;4. Novosibirsk State Technical University, Karl Marx Pr., 20, Novosibirsk, 630073, Russia;1. College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Fuxue Road 18, Changping District, Beijing 102249 China;2. College of Chemical Engineering, Fuzhou University, Fuzhou 350116, Fujian, China;3. Department of Chemical System Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 Japan |
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| Abstract: | The catalytic effects of CO preferential oxidation and methanation catalysts for deep CO removal under different operating conditions (temperature, space velocity, water content, etc.) are systematically studied from the aspects of CO content, CO selectivity, and hydrogen loss index. Results indicate that the 3 wt% Ru/Al2O3 preferential oxidation catalysts reduce CO content to below 10 ppm with a high hydrogen consumption of 11.6–15.7%. And methanation catalysts with 0.7 wt% Ru/Al2O3 also exhibit excellent CO removal performance at 220–240 °C without hydrogen loss. Besides, NiClx/CeO2 methanation catalysts possess the characteristics of high space velocity, high activity, and high water-gas resistance, and can maintain the CO content at close to 20 ppm. Based on these experimental results, the coupling scheme of combining NiClx/CeO2 methanation catalysts (low cost and high reaction space velocity) with 0.7 wt% Ru/Al2O3 methanation catalysts (high activity) to reduce CO content to below10 ppm is proposed. |
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| Keywords: | Hydrogen CO content Methanation Preferential oxidation Selectivity |
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