期刊
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
卷 5, 期 6, 页码 1406-1412出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijggc.2011.05.039
关键词
CO2 sequestration; Mineral carbonation; CO2 mineralisation; Magnesium carbonate; Magnesium hydroxide
类别
资金
- Academy of Finland
- K.H. Renlund foundation
As part of efforts to reduce the greenhouse gas emissions in Finland research around magnesium hydroxide, Mg(OH)(2), carbonation takes place at Abo Akademi University. Converting magnesium silicates, like serpentinite and olivine into Mg(OH)(2) is only briefly discussed here, but it is fundamental to a successful mineral carbonation process. Here, the subsequent carbonation of the produced hydroxide is assessed and its experimental setup is discussed in detail together with experimental results. Our focus is on a gas-solid reaction route in a fluidised bed based on the thermodynamic fact that the reaction between solid Mg(OH)(2) and gaseous CO2 forming MgCO3 and water releases significant amounts of heat. A lab-scale test-setup was constructed in order to study the accelerated carbonation reaction at elevated pressures. If the reaction becomes fast enough, the process will not require an additional heat input. At high enough temperatures the reaction could provide heat for the proceeding Mg(OH)(2) production step and thereby reduce the energy penalty imposed by the Mg(OH)(2) production step. (C) 2011 Elsevier Ltd. All rights reserved.
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