The developers of an advanced method to combust high-sulfur coal with low emissions says it can mix oil-soaked paper cores from used automotive oil filters with the coal to achieve both disposal of the filter cores and energy recovery. ClearStack Combustion Corp., Springfield, IL, says it has successfully demonstrated a way to burn high-sulfur midwest coal and the oil-soaked paper cores from automotive oil filters – yet still comply with the Environmental Protection Agency's ...

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