Fast pyrolysis of biomass produces a high yield of bio-oil through well-established technologies . To utilizethis oil as liquid fuel the oxygen content must be reduced from 15-30 wt.% down to <1 wt.%, which increases heating value and stability and decreases acidity . Upgrading bio-oil by catalytic hydrodeoxygenation (HDO) is challenged by severe polymerization and coking upon heating the oil. Alternatively, performing fast pyrolysis in high-pressure hydrogen atmosphere in a fluid bed reactor with a HDO catalyst as bed medium, could immediately stabilize reactive pyrolysis vapors . An additional vapor phase HDO reactor could ensure removal of oxygen down to <1 wt%, resulting in separate hydrocarbon oil and water phases being recovered. A schematic diagram for such a process is shown in Figure 1. A simplified bench scale setup of this process has been constructed at DTU Chemical Engineering. With a capacity of 100 to 300 g/h solid biomass, the aim is to provide a proof-of-concept for the continuous conversion of solid biomass to low oxygen, fuel-grade bio-oil.
|Number of pages||1|
|Publication status||Published - 2017|
|Event||25th European Biomass Conference and Exhibition - Stockholmsmässan, Stockholm, Sweden|
Duration: 12 Jun 2017 → 15 Jun 2017
|Conference||25th European Biomass Conference and Exhibition|
|Period||12/06/2017 → 15/06/2017|