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首页> 美国政府科技报告 >Assessment of Blast Furnace Retrofit for the CO-Manufacture of Steel, Electricity, and Synfuels. Final Report
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Assessment of Blast Furnace Retrofit for the CO-Manufacture of Steel, Electricity, and Synfuels. Final Report

机译：高炉改造用于钢铁，电力和合成燃料的CO制造评估。总结报告

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The objective of this study was to assess a potentially high payoff concept through preliminary engineering. Two retrofit approaches were evaluated in the study: minimal retrofit and synfuels retrofit. The minimal retrofit approach consists of operating a blast furnace with a minimum amount of changes to its operating conditions. The blast furnace combustion temperatures and amount of gas produced are maintained at substantially similar levels to normal blast furnace operation for pig iron production. In the synfuels retrofit approach, the minimum retrofit case was upgraded to an oxygen-blown, medium-Btu gasifier suitable for the production of synthesis gas. This gas can then be converted to electricity, substitute natural gas, or methanol. This concept, which was based on converting a blast furnace to a British Gas/Lurgi slagging gasifier, appears to be technically feasible. While some engineering problems were identified, they do not appear to be insurmountable. The synfuels retrofit facility, designed to produce electricity, methanol, or substitute natural gas from coal, shows a capital investment of $1.726 billion or $62.8 per trillion Btu. When compared to a grass roots facility producing the same product slate ($70.3 per trillion Btu), the retrofit represents a savings or cost avoidance of only 10% over a new facility. It can be concluded that the economics of coal gasification, in general, are currently not favorable due to the relatively low cost and apparent availability of oil and natural gas. Even site favorable situations, such as integration with steel mill operations, do not seem to be sufficient to make blast furnace retrofits economically attractive at this time. 26 refs., 15 figs., 13 tabs. (ERA citation 10:029646)

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