@article{ce4fe7aa9282470b946846e141a3b696,
title = "Experimental studies on a combined pyrolysis/staged condensation/hydrotreatment approach to obtain biofuels and biobased chemicals",
abstract = "Fast pyrolysis is an efficient technology to convert lignocellulosic biomass to a liquid product. However, the high contents of oxygenated compounds and water hinder the direct utilization of pyrolysis oils. Here, we report an upgrading concept to obtain liquid products with improved product properties and enriched in valuable low molecular weight chemicals and particularly alkylphenols. It entails two steps, viz. i) pyrolysis with in-situ staged condensation at multiple kg scale followed by ii) a catalytic hydrotreatment of selected fractions using a Ru/C catalyst. Of all pyrolysis oil fractions after staged condensation, the product collected in a condenser equipped with an electrostatic precipitator (ESP) at 120 °C was identified as the most attractive for hydrotreatment when considering product yields and composition. The best hydrotreatment results (Ru/C, 350 °C, 100 bar H2, 4 h) were achieved using beechwood and walnut shells as feedstock, resulting in a high oil yield (about 64 wt% based on pyrolysis oil fraction intake) with a higher heating value of about 37 MJ/kg and enriched in alkylphenols (about 16 wt%). Overall, it was shown that the type of biomass (beech sawdust, walnut granulates, and pine/spruce sawdust) has a limited impact on liquid and alkylphenols yields which implies feedstock flexibility of this integrated concept.",
keywords = "Biobased alkylphenols, Biofuels, Catalytic hydrotreatment, Fast pyrolysis, Staged condensation",
author = "Huaizhou Yang and {de Wild}, Paul and Lahive, {Ciaran W.} and Zhiwen Wang and Deuss, {Peter J.} and Heeres, {Hero J.}",
note = "Funding Information: H.Y. and Z.W. acknowledge the China Scholarship Council for funding their Ph.D. studies (grant number 201706160156 and 201706300138, respectively). Financial support from the Dutch Ministry of Economic Affairs and Climate for this project is gratefully acknowledged (TKI-BBEI project ?CALIBRA?, reference TEBE117014). Wang Yin, Leon Rohrbach, Erwin Wilbers, Marcel de Vries, and Hans van der Velde, all from the University of Groningen, are acknowledged for technical and analytical support. We also thank Ben van Egmond and Ron van der Laan from TNO for technical and analytical support. Funding Information: H.Y. and Z.W. acknowledge the China Scholarship Council for funding their Ph.D. studies (grant number 201706160156 and 201706300138 , respectively). Financial support from the Dutch Ministry of Economic Affairs and Climate for this project is gratefully acknowledged (TKI-BBEI project “CALIBRA”, reference TEBE117014 ). Wang Yin, Leon Rohrbach, Erwin Wilbers, Marcel de Vries, and Hans van der Velde, all from the University of Groningen, are acknowledged for technical and analytical support. We also thank Ben van Egmond and Ron van der Laan from TNO for technical and analytical support. Publisher Copyright: {\textcopyright} 2022 The Authors",
year = "2022",
month = apr,
doi = "10.1016/j.fuproc.2021.107160",
language = "English",
volume = "228",
journal = "Fuel processing technology",
issn = "0378-3820",
publisher = "ELSEVIER SCIENCE BV",
}