TY - JOUR
T1 - Biomass pyrolysis solids as reducing agents
T2 - Comparison with commercial reducing agents
AU - Adrados, Aitziber
AU - De Marco, Isabel
AU - López-Urionabarrenechea, Alexander
AU - Solar, Jon
AU - Caballero, Blanca M.
AU - Gastelu, Naia
N1 - Publisher Copyright:
© 2015 by the authors.
PY - 2016
Y1 - 2016
N2 - Biomass is one of the most suitable options to be used as renewable energy source due to its extensive availability and its contribution to reduce greenhouse gas emissions. Pyrolysis of lignocellulosic biomass under appropriate conditions (slow heating rate and high temperatures) can produce a quality solid product, which could be applicable to several metallurgical processes as reducing agent (biocoke or bioreducer). Two woody biomass samples (olives and eucalyptus) were pyrolyzed to produce biocoke. These biocokes were characterized by means of proximate and ultimate analysis, real density, specific surface area, and porosity and were compared with three commercial reducing agents. Finally, reactivity tests were performed both with the biocokes and with the commercial reducing agents. Bioreducers have lower ash and sulfur contents than commercial reducers, higher surface area and porosity, and consequently, much higher reactivity. Bioreducers are not appropriate to be used as top burden in blast furnaces, but they can be used as fuel and reducing agent either tuyére injected at the lower part of the blast furnace or in non-ferrous metallurgical processes where no mechanical strength is needed as, for example, in rotary kilns.
AB - Biomass is one of the most suitable options to be used as renewable energy source due to its extensive availability and its contribution to reduce greenhouse gas emissions. Pyrolysis of lignocellulosic biomass under appropriate conditions (slow heating rate and high temperatures) can produce a quality solid product, which could be applicable to several metallurgical processes as reducing agent (biocoke or bioreducer). Two woody biomass samples (olives and eucalyptus) were pyrolyzed to produce biocoke. These biocokes were characterized by means of proximate and ultimate analysis, real density, specific surface area, and porosity and were compared with three commercial reducing agents. Finally, reactivity tests were performed both with the biocokes and with the commercial reducing agents. Bioreducers have lower ash and sulfur contents than commercial reducers, higher surface area and porosity, and consequently, much higher reactivity. Bioreducers are not appropriate to be used as top burden in blast furnaces, but they can be used as fuel and reducing agent either tuyére injected at the lower part of the blast furnace or in non-ferrous metallurgical processes where no mechanical strength is needed as, for example, in rotary kilns.
KW - Biocoke
KW - Biomass
KW - Bioreducer
KW - Slow pyrolysis
UR - https://www.scopus.com/pages/publications/84956634018
U2 - 10.3390/ma9010003
DO - 10.3390/ma9010003
M3 - Article
AN - SCOPUS:84956634018
SN - 1996-1944
VL - 9
JO - Materials
JF - Materials
IS - 1
M1 - 3
ER -
