Title:
Biomass Steam Processing of Barley Straw towards Biocoal - A Carbonisation Alternative
Author(s):
Reichert, D., Genova, B., Steinbrueck, J., Rossbach, M., Walz, L., Bockhorn, H.
Document(s):
Paper
Abstract:
The use of steam to carbonise barley straw has been tested in a laboratory screw reactor at atmospheric pressure and at temperatures between 250 and 350ºC for short reaction times between 38 and 150 minutes. This treatment has been named biomass steam processing (BSP). The resulting biocoal is compared with products of hydrothermal carbonisation (HTC) of straw in liquid, pressurised water at typical HTC reaction parameters i.e. 180 to 240 ºC, 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). For example, a product coal of approximately C3.5H4.0O1.0 with an approximate HHV of 24 MJ·kg-1 has been obtained with BSP after 113 minutes and 325ºC whereas with HTC 720 minutes at 200ºC were necessary. Hence, BSP is thought to be an effective alternative to HTC having much less elaborate process parameters, especially atmospheric pressure and shorter reaction times.
Keywords:
biochar, biomass, calorific value, conversion, steam
Topic:
Processes for Fuels from Biomass
Subtopic:
Torrefaction of biomass
Event:
19th European Biomass Conference and Exhibition
Session:
VP3.2.16
Pages:
2027 - 2031
ISBN-13:
978-88-89407-55-4
ISBN-10:
88-89407-55-7
Paper DOI:
10.5071/19thEUBCE2011-VP3.2.16
Price:
FREE
