The National Academies Summit on America's Energy Future Summary of a Meeting (2008) / Chapter Skim
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5 Coal
5 Coal
Pages 39-43
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From page 39... ...
For example, even if the conversion of coal to liquid fuels were 100 percent efficient, 1 ton of coal would yield about a half ton of fuel and 2 tons of carbon dioxide. The United States could "wind up spending a great deal of money on coal liquefaction plants that would then be rendered uneconomic in light of future developments related to global warming," said Bingaman.
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From page 40... ...
But the use of CCS technology to reduce future climate change will substantially increase the cost of coal as an energy supply. The MIT study set out to find a path that mitigates carbon dioxide emissions yet continues to use coal to meet urgent energy needs, especially in developing countries.
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From page 41... ...
9 Figure 5-1.eps 8 High Tax Low Tax redrawn to vector 7 Billion metric tons CO2 6 5 4 3 2 1 0 2000 2005 2010 2015 2020 2025 2030 2035 2040 2045 2050 FIGURE 5.2 The annual sequestration of carbon dioxide, in billions of metric tons per Year year, would rise substantially with a high carbon tax and less substantially with a lower Figure 5-2.eps tax. SOURCE: Deutch and Moniz (2007)
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From page 42... ...
There is no clear technology winner at the moment, Moniz said, and different plants will be needed for different situations, such as different types of coal. "The real message is that we need several projects going on in parallel and not serially." Specker laid out a timeline for the parallel development of different plant and sequestration technologies, noting that EPRI was recently involved in the startup of a pilot project in Wisconsin to capture carbon dioxide using chilled ammonia (Figure 5.3)
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From page 43... ...
a portfolio that emphasizes good commercial practice and multiple technology demonstrations." The highest priority at present, said Moniz, is to move aggressively to demonstrate sequestration at scale.
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