Biomass to Fuels: Upgrading of Flash Pyrolysis Oil by Reactive Distillation Using a High Boiling Alcohol and Acid Catalysts |
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| Institution: | 1. Chemical Engineering Department, Faculty of Mathematics and Natural Science, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands;2. School of Life Science and Technology, Bandung Institute of Technology, Bandung, Indonesia;1. Université de Toulouse, IMT Mines Albi, RAPSODEE CNRS UMR-5302, Campus Jarlard, F-81013 Albi cedex 09, France;2. Formerly of the University of Queensland, Brisbane, QLD 4072, Australia;1. School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK;2. Praxair Technology Center, Praxair, Inc., 175 East Park Drive, Tonawanda, NY 14150, USA;3. Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA;4. Department of Chemical Engineering, University of Massachusetts, 686 North Pleasant Street, 159 Goessmann Lab, Amherst, MA 01003, USA |
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| Abstract: | We here report our studies on the upgrading of flash pyrolysis oil using an improved alcohol treatment method. The method consists of treating pyrolysis oil with a high boiling alcohol like n-butanol in the presence of a (solid) acid catalyst at 323–353 K under reduced pressure (<10 kPa). Using this approach, the water content of the pyrolysis oil is reduced significantly. Variables like the type of alcohol (n-butanol, ethylene glycol, 2-ethyl-hexyl-alcohol) and liquid and solid acids were explored and the product properties of the resulting upgraded pyrolysis oil (kinematics viscosity, water content, pH and heating value) were determined. On the basis of these screenings studies, n-butanol and the solid acid Nafion SAC13 seem to have the highest potential. The product properties of the upgraded pyrolysis oils, and particularly the heating value and the acidity are considerably improved. These improvements are not only due to blending effects but also the result of the occurrence of chemical reactions (a.o. esterification). |
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