2016 Fiscal Year Final Research Report
Geometry design of CO2 solid sorbent used in Active Carbon Recycling Energy System for iron making process
| Project/Area Number |
26420159
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Thermal engineering
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| Research Institution | Waseda University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | リチウムシリケート / 多孔質体 / 円筒形状 / 拡散律速 / CO2分離回収 / 充填層 |
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| Outline of Final Research Achievements |
In order to apply the high temperature CO2 separation technology for iron and steel making process, calcination of lithium silicate and pelletization procedure were developed, and the absorption test using cylindrical-hollow-shaped LS pellet designed by numerical calculation. The numerical analysis employed the combination model of chemical reaction and mass transport in the porous media and improved the prediction accuracy of the absorption behavior. The pellet produced according to the optimized design was tested by TG-DTA at 650 degrees C and 30% CO2 concentration. The pellet reached maximum absorption within 10 minutes and kept 78.4% of the initial CO2 loading after 5 heat cycles. Furthermore, the unsteady absorption behavior in the packed-bed reactor was simulated taking heat and mass transport into account. Consequently, the amount of CO2 absorption and the temperature peak shift caused by absorption heat was accurately simulated and agreed with the experimental result.
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| Free Research Field |
熱工学
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