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Clean coal technologies are various processes implemented in order to reduce the harmful air emissions associated with burning high sulfur coal. These technologies may be employed prior to the coal burning process or installed as controls after the coal has been burned. In some cases, coal gasification is employed prior to burning to significantly reduce high amounts of sulfur. Selective Catalytic Reduction technologies are employed during the burning process to reduce NOx emissions from high sulfur coal fired boilers and power plants.
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