Abstract

ABSTRACT PROXIMATE and ultimate analyses, ash analysis, and high heating value were determined for apple and grape pomace (solid waste from juice processing). Grape and apple pomace combustion were simulated at several excess air levels and combustion products were analyzed. Then grape pomace was burned in a concentric vortex furnace at several levels of excess air to determine combustion efficiency and to confirm flue gas pollutant characteristics. Results show that apple and grape pomace combustion were similar to wood combustion and that furnace slagging was not a problem because combustion temperatures were considerably below the ash fusion temperature. The grape pomace burned at efficiencies of 44 to 61% with only low pollution hazard

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