A strategy to reduce CO2 emissions from hydrocarbon-fueled power plants by precombustion reforming and deep ocean discharge of CO2
- 標題
- A strategy to reduce CO2 emissions from hydrocarbon-fueled power plants by precombustion reforming and deep ocean discharge of CO2
- 作者
- G.C. Nihous, Y. Mori, S.M. Masutani, L.A. Vega, C.M. Kinoshita
- 文件屬性
- 國外期刊
- 知識分類
- 基礎研究
- 出版年
- 1994
- 刊名
- International Journal of Hydrogen Energy
- 點閱數
- 2544
摘要
A process to reduce atmospheric CO2 emissions from hydrocarbon-fueled power plants is proposed. The fuel is reformed into a mixture of hydrogen and CO2 before combustion takes place. These gases are subsequently separated by preferential absorption or by differential phase changes. Thereafter, hydrogen replaces the original fuel for power generation. The liquefied CO2 is discharged into the deep ocean. Water depths of about 500 m appear to be favorable from logistic and thermoeconomic standpoints. Calculations for a 500 MW methane power plant, retrofitted with the proposed system, indicate moderate power and cost penalties. The relative impact of a widespread implementation of this global warming countermeasure is assessed, and the advantages of moderate hydrocarbon consumption trends, as well as of high CO2 discharge fractions are highlighted. This latter point may indicate the need for sweeping changes, such as the establishment of hydrogen-based economies if global warming is to be avoided.