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Effect of Co-Mo/HZSM-5 on ex-situ catalytic fast pyrolysis of different biomass feedstocks

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2016 ASABE Annual International Meeting  162456383.(doi:10.13031/aim.20162456383)
Authors:   Shouyun Cheng, Lin Wei, James Julson
Keywords:   Biofuels, catalytic cracking, Co-Mo/HZSM-5, hydrocarbon, bio-oil vapor.

Abstract. Biomass can be converted to hydrocarbon biofuel through the integration of pyrolysis and catalytic cracking. In this study, the effects of Co-Mo/HZSM-5 on catalytic fast pyrolysis of different biomass feedstocks were investigated using a two-stage reactor. Two grassy biomass (switchgrass and prairie cordgrass), and one woody biomass (pine sawdust) were chosen as feedstock. The results indicated that Co-Mo/HZSM-5 reduced bio-oil yield in comparison with non-catalytic pyrolysis, but it produced upgraded bio-oil with higher contents of hydrocarbons and phenols. Pine sawdust produced highest bio-oil yields compared to prairie cordgrass and switch grass. Prairie cordgrass generated the upgraded bio-oil with the highest hydrocarbon content at 36.07%, while switch grass produced the upgraded bio-oil with the lowest hydrocarbon content at 14.08%. Bio-char obtained from pine sawdust pyrolysis had highest HHV value (28.56MJ/kg), which can be used as an excellent solid fuel.

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