Pyrolysis is an existing popularly adopted thermochemical methods for biomass conversion. Fast pyrolysis product yields are typically 5070% biooil, 1030% biochar, and 1520% syngas by mass. Biomass fast pyrolysis is of rapidly growing interest in europe as it is perceived to offer significant logistical and hence economic advantages over other thermal conversion processes. Renewable oil international llc provided the life cycle cost of operating a 100 drytonday fast pyrolysis system using southern pine wood chips as feedstock. Biomass is a mixture of hemicellulose, cellulose, lignin and minor amounts of other organics which each pyrolyse or degrade at different rates and by different mechanisms and pathways.
Fast pyrolysis can directly produce a liquid fuel from biomass which can be readily stored or transported. Biomass conversions into valueadded products have been done through biochemical, chemical and thermochemical processes. Biomass conversion by pyrolysis technology springerlink. The american business partner is biogas energy, richmond, ca. An overview of fast pyrolysis of biomass sciencedirect. A technoeconomic analysis was performed for a 100 drytonday 90,719 kgday fast pyrolysis transportable plant.
Research has moved from empirical investigations to more fundamental studies of pyrolysis mechanisms. Everyday low prices and free delivery on eligible orders. Fast pyrolysis and related catalytic pyrolysis are of increasing interest as pathways to advanced biofuels that closely mimic traditional petroleum products. This handbook is an edited and updated version of the final report of the iea bioenergy sponsored pyrolysis activity pyra that officially finished in 1998 and accomplished many valuable contributions to the science and technology of fast pyrolysis.
Fast pyrolysis is a thermal decomposition process that occurs in the absence of oxygen, at moderate temperatures with a high heat transfer rate to the biomass particles and a short hot vapour residence time in the order of a few seconds in the reaction zone. The essential features of a fast pyrolysis process are. The amount of arable land, the biomass yield, the purchase price of the crop, the policy support, and the product yield of fast pyrolysis are identified as the most influential parameters. Theories on the chemical and physical pathways from plant polymers to pyrolysis products have proliferated as a result. At the beginning of the 21st century, there were two patents on ablative fast pyrolysis reactors. It is intended that this handbook will provide a useful guide both to newcomers to the. Pyrolysis process involves thermal decomposition which occurs above 400 c without oxygen.
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