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Showing 1 to 2 of 2 for “"HAPPs"”.

  1. Precombustion Removal of Hazardous Air Pollutant Precursors

    … potentially hazardous air pollutant precursors (HAPPs). Studies have suggested that many of these HAPPs have the potential to be removed prior to combustion. This thesis details the findings of a bench-scale test program that was implemented to evaluate the capabilities of physical coal cleaning …

    vt Repository record for Precombustion Removal of Hazardous Air Pollutant Precursors (opens in a new tab)

  2. Characterizing Trace Element Associations in the Pittsburgh No. 8, Illinois No. 6 and Coalburg Coal Seams

    … potentially hazardous air pollutant precursors (HAPPs) that occur as trace elements in the run-of-mine coals. Unfortunately, many existing coal preparation plants are inefficient in removing trace elements because of poor circuit design and inadequate liberation of coal and mineral matter. These …

    vt Repository record for Characterizing Trace Element Associations in the Pittsburgh No. 8, Illinois No. 6 and Coalburg Coal Seams (opens in a new tab)