Title:
Bench-Scale Pneumatic Conveying Tests of Pyrolyzed Wood Powder for Usage as a Bioreductant in Blast Furnace Processes
Author(s):
Deutsch, R., Krammer, G., Strasser, C., Stocker, H., Kienzl, N.
Document(s):
Paper
Abstract:
The reduction of greenhouse gas emissions is an important issue for iron and steel industry. Biomass-based reducing agents, also called bioreductants, could be used in modern blast furnaces’ PCI (pulverised coal injection) systems to substitute pulverized coal which is conveyed pneumatically in dense phase flow regime and injected into the blast furnace to substitute the more expensive coke. To evaluate the feasibility of doing so and the implications on the conveying system one sample of torrefied biomass has been comminuted on two different mill types and subsequently analysed and tested on a bench scale dense phase conveying system. It could be observed that increasing the sphericity of the finely ground bioreductant by the right mill choice is possible and – furthermore – vital for a successful conveying. Parameters like mass flow rate and solids loading ratio also appear to benefit from an increase in sphericity, which was expected from previous studies. However, for substituting injection coal with bioreductant economically viable without making significant changes on existing conveying systems, further improvements of the bioreductant are imperative.
Keywords:
biomass, fluidization, pyrolysis, torrefaction, blast furnace, biochar, industry
Topic:
Biomass Conversion for Bioenergy
Subtopic:
Biomass pretreatment for solid fuels and production of intermediates
Event:
30th European Biomass Conference and Exhibition
Session:
4CO.12.2
Pages:
608 - 611
ISBN:
978-88-89407-22-6
Paper DOI:
10.5071/30thEUBCE2022-4CO.12.2
Price:
FREE
