EUBCE 2021 - Richard DEUTSCH - Effects of varying comminution techniques and pyrolysis temperatures on the particle shape of pyrolyzed wood powders and its implications on fluidisation behaviour

Effects of varying comminution techniques and pyrolysis temperatures on the particle shape of pyrolyzed wood powders and its implications on fluidisation behaviour

Short Introductive summary

Iron production via blast furnace utilizes coal and coke to reduce iron oxides which results in high greenhouse gas emissions. Biomass-based reducing agents may reduce its fossil carbon footprint. Charcoal as bioreducer has been since the beginning of steelmaking. In order to obtain a reducing agent which is appropriately fluidizable for pulverized coal injection (PCI), the most influential powder characteristics must be named and the influence of thermal pre-treatment and comminution technique on particle properties have to be examined. The aim is to show that particle shape design of a grinding product is feasible to a certain extent by varying mill types and how pyrolyzed wood powder properties technically relevant for powder conveying processes can be influenced .

R. Deutsch, BEST-Bioenergy and Sustainable Technologies GmbH, Graz, AUSTRIA
G. Krammer, Graz University of Technology, Graz, AUSTRIA
C. Strasser, BEST-Bioenergy and Sustainable Technologies GmbH, Graz, AUSTRIA
N. Kienzl, BEST-Bioenergy and Sustainable Technologies GmbH, Graz, AUSTRIA