Carbon Dioxide Mineralisation and Integration with Flue Gas Desulphurisation Applied to a Modern Coal-Fired Power Plant  

作　　者：Ron Zevenhoven Johan Fagerlund Thomas Bjorklof Magdalena Maikela Olav Eklund 

机构地区：[1]Department of Chemical Engineering, Abo Akademi University, Abo, Turku 20500, Finland [2]Department of Geology & Mineralogy, Abo Akademi University,Abo, Turku 20500, Finland

出　　处：《Journal of Energy and Power Engineering》2014年第3期431-447,共17页能源与动力工程（美国大卫英文）

摘　　要：For Finland, carbon dioxide mineralisation was identified as the only option for CCS （carbon capture and storage） application. Unfortunately it has not been embraced by the power sector. One interesting source-sink combination, however, is formed by magnesium silicate resources at Vammala, located -85 km east of the 565 MWe coal-fired Meri-Pori Power Plant on the country＇s southwest coast. This paper assesses mineral sequestration of Meri-Pori power plant CO2, using Vammala mineral resources and the mineralisation process under development at Abo Akademi University. That process implies Mg（OH）E production from magnesium silicate-based rock, followed by gas/solid carbonation of the Mg（OH）2 in a pressurised fluidised bed. Reported are results on experimental work, i.e., Mg（OH）2 production, with rock from locations close to Meri-Pori. Results suggest a total CO2 fixation capacity -50 Mt CO2 for the Vammala site, although production of Mg（OH）2 from rock from the site is challenging. Finally, as mineralisation could be directly applied to flue gases without CO2 pre-capture, we report from experimental work on carbonation of Mg（OH）2 with CO2 and CO2-SO2-O2 gas mixtures. Results show that SO2 readily reacts with Mg（OH）2, providing an opportunity to simultaneously capture SO2 and CO2, which could make separate flue gas desulphurisation redundant.

关 键 词：CO2 mineral sequestration large-scale application coal-fired power plant desulphurisation. 

分 类 号：TQ116.3[化学工程—无机化工] X773[环境科学与工程—环境工程]