Title:
Biochar from Biogenic Residues and Waste: a Techno-economic Assessment of Carbonization Technologies
Author(s):
Kälber, S., Leible, L., Domnik, T.
Document(s):
Paper
Poster
Abstract:
Carbonization offers the possibility of converting biogenic residues and waste materials into biochar and thus making them more energy efficient or materially usable. Currently, various carbonization technologies are under development, which differ significantly in their chosen process conditions. Here are to be called the hydrothermal carbonization (HTC), the biomass steam conditioning (BSP, Biomass Steam Processing), the slow pyrolysis as well as their process relatives, the torrefaction. The aim of this investigation was to analyze and evaluate the selected carbonization technologies for biogenic residues and waste from technological and economic aspects. First of all, the biogenic residues and waste materials relevant for these technologies are identified in Germany, both in terms of their volume, their composition and their supply costs free carbonization plant. Due to their technical specifications, pyrolysis and torrefaction are in particular suitable for dry input materials, such as forest wood residues or cereal straw. In the HTC or BSP process, moist feedstocks such as biowaste or sewage sludge can also be used. This paper focuses on the pyrolysis of cereal straw and forest wood residues for the production of biochar. The techno-economic analysis shows that the production costs per ton biochar are well over 700 €.
Keywords:
biomass, costs, pyrolysis, torrefaction, biochar, HTC
Topic:
Biomass Conversion Technologies for Energy Carriers, Chemicals and Materials
Subtopic:
Production of thermally treated solid fuels
Event:
27th European Biomass Conference and Exhibition
Session:
3BV.2.17
Pages:
1202 - 1212
ISBN:
978-88-89407-19-6
Paper DOI:
10.5071/27thEUBCE2019-3BV.2.17
Price:
FREE
