High yield syngas and performance of Ni-loaded thai lignite char catalyst from sawdust gasification

• Main Authors: Suparin Chaiklangmuang, Sirimirin Meesuk
• Format: Journal
• Published: 2018
• Subjects: Biochemistry, Genetics and Molecular Biology; Chemistry; Materials Science; Mathematics; Agricultural and Biological Sciences; Arts and Humanities
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85030675183&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/43599
• Institution: Chiang Mai University

© 2017, Chiang Mai University. All rights reserved. Catalytic steam gasification of sawdust was performed with a steam pressure of 30 kPa, catalyst/biomass mass ratios of 0.5-3.0 and reaction temperatures of 500-650 °C. The Ni-loaded Thai lignite char catalyst, 15.50 wt%, was effective in catalyzing the volatile matters and tars from the devolatilizer and promoting syngas formation. The yield of H 2 increased mostly with increase in temperature throughout the investigations, while that of CO showed a decreasing trend, from 500-550 °C, leveling off afterward. The highest H 2 yield, 60.98%, was obtained at the final gasification temperature of 600 °C. The ratios of H 2 /CO obtained in the reaction temperature study were between 1.08 and 2.07. The effect of the catalyst/biomass mass ratio was investigated at 600 °C; the ratio 3.0 achieved the maximum H 2 /CO ratio, at 2.33. Considering the experimental results, there exists good potential for syngas production from sawdust via catalytic steam gasification using Ni-loaded Thai lignite char catalyst.