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首页> 美国政府科技报告 >Effect of Coal Cleaning on the Quantity of Sulfur Dioxide and Ash Produced by Coal-Fired Power Generation in the Northeastern United States
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Effect of Coal Cleaning on the Quantity of Sulfur Dioxide and Ash Produced by Coal-Fired Power Generation in the Northeastern United States

机译：煤炭清洗对美国东北部燃煤发电产生的二氧化硫和灰分量的影响

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This study estimates the extent to which coal cleaning could reduce sulfur dioxide and ash output by Northeastern utilities. Total permissible SO sub 2 release was calculated for each state and the entire region based upon applicable environmental regulations. These results were compared with SO sub 2 outputs corresponding to the compositions of the coals reported by the utilities to the FERC and the compositions of cleaned coals derived from laboratory data. The cleaned coal compositions were based on data representative of counties supplying coal and assumed that the sulfur and ash content of the coals supplied to the utilities could be reduced to successively lower amounts under progressively advanced coal cleaning processes. SO sub 2 and ash outputs were estimated for eight assumed cleaning conditions, progressing from state-of-the-art physical cleaning methods to advanced chemical technologies. Coal data used in arriving at the state and regional output estimates were adjusted to account for relative tonnages delivered by the counties of origin and consumed by individual utilities during 1980. The results indicated that the assumed fine coal physical cleaning methods could reduce total SO sub 2 output by as much as 42% (as compared to reported coal compositions) and that advanced chemical cleaning technologies could achieve potential reductions of approximately 90%. Corresponding reductions were determined for ash wastes: the reported coals could be expected to produce about 14 million tons of ash; physically cleaned coals about 4 million tons; and advanced chemically cleaned coals approximately 1.3 million tons. Although no attempt was made in this study to assess economic aspects of coal cleaning, a brief discussion of cost-benefit analyses which others have made is included in the summary section of this report. (ERA citation 07:060824)

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