High quality product gas from biomass steam gasification combined with torrefaction and carbon dioxide capture processes |
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| Affiliation: | 1. School of Chemical Engineering and Materials Science, Chung-Ang University, Seoul 06980, Republic of Korea;2. Department of Civil, Safety & Environmental Engineering, Hankyong National University, 327 Jungang-ro, Anseong-si, Gyeonggi-do, Republic of Korea;1. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China;2. Discipline of Chemical Engineering, Western Australian School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia;1. Process and Energy Laboratory, Delft University of Technology, Leeghwaterstraat 39, 2628 CB Delft, The Netherlands;2. University of Teramo, Department of Food Science, Faculty of Bioscience, Agrofood and Environmental Technology, Via C.Lerici 1, 64023 Mosciano. S. Angelo TE, Italy;3. Energy research Centre of the Netherlands (ECN), P.O. Box 1, 1755 ZG Petten, The Netherlands;4. Faculty of Mathematics and Natural Sciences, Chemical Technology, Engineering and Technology Institute of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands;1. Departament d’Enginyeria Química, Universitat Rovira i Virgili, Av. Països Catalans, 26, Tarragona 43007, Spain;2. Catalonia Institute for Energy Research, IREC, C/ Marcel·lí Domingo, 2, Tarragona 43007, Spain;3. Department of Chemistry, Universitat Autònoma de Barcelona, Edifici Cn- Campus UAB, 08193 Bellaterra (Cerdanyola del Vallès), Barcelona, Spain;4. Energies Tèrmiques Bàsiques SL, C/ Maó 22, 2-1, 08022 Barcelona, Spain |
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| Abstract: | Gasification is currently recognized as a mature technology to convert biomass into useful and versatile product gas for further energy and fuel applications. However, there are some remaining problems relating to the process operation and process efficiency due to inherent properties of biomass feedstock such as high moisture content, low energy density and high oxygen content. Strategies to improve the efficiency of biomass gasification as well as the quality of product gas are thus required. For this purpose, a combined process of torrefaction, gasification, and carbon dioxide capture is developed and simulated in a commercial simulator to investigate the performance of a biomass gasification coupled with a pre-treatment and a post-treatment processes. The results show that the quality of product gas is enhanced when combining gasification with a torrefaction and a CO2 capture processes. The heating value of the product gas and the cold gas efficiency are both increased with additional torrefaction. The CO2 capture process using monoethanolamine offers a CO2 removal efficiency of about 83% and consequently increase the product gas heating value up to 27%. |
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| Keywords: | Biomass gasification Torrefaction Product gas CCS (carbon capture and storage) |
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