Title:
Biocoal in Minutes - Biomass Steam Processing on the Pilot Plant Scale
Author(s):
Steinbrück, J., Reichert, D., Genova, B., Rossbach, M., Walz, L., Bockhorn, H.
Document(s):
Paper
Abstract:
The use of steam to carbonize biomass has been tested in a laboratory screw reactor at atmospheric pressure and at temperatures between 250 and 400°C for short reaction times between 30 and 150 minutes. This treatment has been named biomass steam processing (BSP). The resulting biocoal is compared with products of hydrothermal carbonization (HTC) of biomass in liquid, pressurized water at typical HTC reaction parameters i.e. 180 to 240°C, 15 to 33 bar, 0.5 to 12 hours. BSP derived biocoal was found to be very similar to HTC coal product in terms of elemental composition and higher heating value (HHV). Hence, BSP is thought to be an effective alternative to HTC having much less elaborate process parameters, especially atmospheric pressure and shorter reaction times. In the present study, the process parameters obtained at laboratory scale with a maximum throughput of 0.5 kg•h-1 are transferred to a BSP pilot plant with a maximum throughput of 50 kg•h-1.
Keywords:
biomass, pilot plant, solid biofuels, steam, conversion, biochar
Topic:
R&D on Processes for Solid, Liquid and Gaseous Fuels from Biomass
Subtopic:
Advanced solid biofuels
Event:
20th European Biomass Conference and Exhibition
Session:
3DO.3.5
Pages:
1567 - 1570
ISBN:
978-88-89407-54-7
Paper DOI:
10.5071/20thEUBCE2012-3DO.3.5
Price:
FREE
