TY - JOUR
T1 - CO2 fixation using magnesium silicate minerals. Part 2
T2 - Energy efficiency and integration with iron-and steelmaking
AU - Romão, Inês
AU - Nduagu, Experience
AU - Fagerlund, Johan
AU - Gando-Ferreira, Licínio M.
AU - Zevenhoven, Ron
N1 - Funding Information:
This work was supported by the Academy of Finland program “Sustainable Energy” (2008–2011). Further support came from KH Renlund Foundation (2007–2009). I. Romão acknowledges the Leonardo da Vinci Project for financial support. Prof. Henrik Saxén and Dr. Mikko Helle are acknowledged for comments and help.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2012/5
Y1 - 2012/5
N2 - Mineral carbonation presents itself as the most promising method to sequester CO2 in Finland. A staged process for CO2 mineralisation, using magnesium silicates, is being intensively developed at åbo Akademi. A process energy analysis is made based on the most energy intensive steps, i.e. the heat treatment of the magnesium silicate rock and the carbonation reaction. Aspen Plus® software was used to model the process and pinch and exergy analyses were performed to acquire information on process layout for optimal heat recovery and integration. The simulations allow for concluding that the fixation of 1 kg of CO2 requires 3.04 MJ and 3.1 kg of serpentinite mineral rock. Additionally, the process gives considerable amounts of FeOOH and Ca(OH)2 as by-products making the integration of mineral carbonation with the steelmaking industry a very attractive opportunity to reduce CO2 emissions and raw materials inputs.
AB - Mineral carbonation presents itself as the most promising method to sequester CO2 in Finland. A staged process for CO2 mineralisation, using magnesium silicates, is being intensively developed at åbo Akademi. A process energy analysis is made based on the most energy intensive steps, i.e. the heat treatment of the magnesium silicate rock and the carbonation reaction. Aspen Plus® software was used to model the process and pinch and exergy analyses were performed to acquire information on process layout for optimal heat recovery and integration. The simulations allow for concluding that the fixation of 1 kg of CO2 requires 3.04 MJ and 3.1 kg of serpentinite mineral rock. Additionally, the process gives considerable amounts of FeOOH and Ca(OH)2 as by-products making the integration of mineral carbonation with the steelmaking industry a very attractive opportunity to reduce CO2 emissions and raw materials inputs.
KW - Exergy analysis
KW - Mineral carbonation
KW - Pinch analysis
KW - Process energy efficiency
KW - Steelmaking
UR - http://www.scopus.com/inward/record.url?scp=84859983664&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2011.08.026
DO - 10.1016/j.energy.2011.08.026
M3 - Article
AN - SCOPUS:84859983664
SN - 0360-5442
VL - 41
SP - 203
EP - 211
JO - Energy
JF - Energy
IS - 1
ER -