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Upgrading of fast pyrolysis byproducts for material use with high value

Funke, A.; Abbas, M. M.; Dahmen, N.


Fast pyrolysis is a thermochemical conversion process for the production of liquid substances from solid organic fuels, be it a blend for energetic use (liquid fuel) or more specific chemical substances for material use. However, complete liquefaction of the biomass cannot be achieved and there is always a solid byproduct, i.e. char. In most industrial and/or pilot plants this char will be burnt within the process in order to supply the heat necessary to keep up the process. Depending on the process design this is not necessarily required and with an energetically optimized system, char could be recovered as byproduct. It can be marketed directly as solid fuel or – after upgrading – for material uses. The amount of char produced is comparatively low for woody biomass since the process is optimized for liquid yield and the potential of such an alternative char use as byproduct is low. However, high ash content of biomass tends to decrease the liquid yield in favor of higher solids and gas yields because secondary pyrolysis reactions are catalyzed and ash will accumulate in the solids. If ash-rich biomass is used for fast pyrolysis, solids will represent a more important byproduct with little more value than its heating value. ... mehr

Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Publikationstyp Vortrag
Publikationsjahr 2015
Sprache Englisch
Identifikator KITopen-ID: 230102212
HGF-Programm 35.13.03 (POF III, LK 01) Behandlung und Veredelung
Veranstaltung Biorefinery I : Chemicals and Materials From Thermo-Chemical Biomass Conversion and Related Processes, Chania, GR, September 27 - October 2, 2015 Book of Abstracts
Schlagwörter char, activated carbon, flash pyrolysis, demineralization
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