(210a) Catalytic Upgrading of Pyrolysis Vapor at Bench Scale with Platinum on Titania
AIChE Annual Meeting
2018
2018 AIChE Annual Meeting
Sustainable Engineering Forum
Chemical and Catalytic Conversions and Processes for Renewable Feedstocks
Monday, October 29, 2018 - 3:30pm to 3:55pm
To this end, a bench-scale bubbling fluidized bed pyrolyzer was operated at 150 g/h feed rate of pine flour with a 100 g fixed-bed catalytic upgrader. A 0.5% Pt/TiO2 catalyst produced a lower oxygen (< 20%) liquid at 40% carbon efficiency at 400°C and biomass-to-catalyst ratio (B:C) of 3 for numerous cycles. The catalyst was regenerated and reused by oxidation with air and reduction with hydrogen. The oxidation and reduction times were reduced to 2 h and 1 h respectively without compromising performance or catalyst temperature control. Increasing the pyrolysis temperature from 500°C to 550°C allowed operation at B:C greater than 3 at comparable performance. Performance was generally similar to 2% Pt/TiO2 but at reduced catalyst cost. Projected costs are < $4/gallon of gasoline blendstock. Responses to other parameter changes and prospects for further improvements will be discussed.