Conversion of biomass to liquid fuels is a key opportunity for providing renewable sources to displace fossil energy and reduce carbon footprint. Fast pyrolysis of biomass can produce high yields of liquid product from solid lignocellulosic biomass. Subsequent upgrading of the bio-oil product is required prior to introduction of the biofuel into the existing commercial market. The use of catalytic hydroprocessing is an important way to produce infrastructure compatible fuels from bio-oil. Alternatively, hydrothermal liquefaction is a different pathway for direct liquefaction of biomass. Development of the technology and the required hydrotreating of the biocrude are underway in laboratories around the world. A third pathway is also under development wherein fast pyrolysis is accomplished in the presence of catalyst for modifying the bio-oil composition. The different properties of fast pyrolysis bio-oil, with and without catalyst present, and hydrothermal liquefaction biocrude require significantly different processing parameters for the hydrotreating to produce liquid hydrocarbon fuels. Process models have been developed for the three pathways, and equipment has been conceptually sized and costed. In this way the three pathways from biomass to infrastructure compatible fuels can be evaluated and compared. Topics with high impact to the processes operation and cost can be identified in order to guide research for process improvement.
|Number of pages||25|
|Publication status||Published - 2014|
|Event||Symposium on Thermal and Catalytic Sciences for Biofuels and Biobased Products, TCS2014 - Denver, United States|
Duration: 2 Sep 2014 → 5 Sep 2014
|Conference||Symposium on Thermal and Catalytic Sciences for Biofuels and Biobased Products, TCS2014|
|Period||2/09/14 → 5/09/14|
Elliott, D. C., Tews, I., Snowden-Swan, L., Solantausta, Y., & Onarheim, K. (2014). Comparative analysis of fast pyrolysis and hydrothermal liquefaction as routes for biomass conversion to liquid hydrocarbon fuels. Symposium on Thermal and Catalytic Sciences for Biofuels and Biobased Products, TCS2014, Denver, United States.