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SITE EMERGING TECHNOLOGIES PROJECT: BABCOCK & WILCOX CYCLONE VITRIFICATION
Citation:
Czucwa, J., J. Warchol, H. Farzan, AND W. Musiol. SITE EMERGING TECHNOLOGIES PROJECT: BABCOCK & WILCOX CYCLONE VITRIFICATION. U.S. Environmental Protection Agency, Washington, D.C., EPA/540/R-93/507.
Description:
The Babcock & Wilcox 6 million Btu/hr pilot cyclone furnace was successfully used in a 2-year SITE Emerging Technology project to melt and vitrify an EPA Synthetic Soil Matrix (SSM) spiked with 7,000 ppm lead, 1,000 ppm cadmium, and 1,500 ppm chromium. n advantage of vitrification over other thermal treatment technologies is that in addition to destruction of organic wastes, the resulting vitrified product captures anddoes not leach non-volatile heavy metals. ndeed, when operated at 50 to 150 lb/hr of dry SSM feed, and from 100-300 lb/hr of wet SSM feed, the cyclone technology was able toproduct a non-leachable product (as measured by TCLP) from the hazardous soil. rom 95 to 97% of the dry, input SSM was incorporated within the slag. table cyclone operationwas achieved during the 2-year project which processed over 6 tons of clean, unspiked SSM and 5 tons of spiked SSM. uring the thermal vitrification process, the heavy metalspartition between the vitrified slag and the stack flyash. he capture of heavy metalsin the slag was found to increase with increasing feed rate and with decreasing metalvolatility. he treatment of the synthetic soil matrix resulted in a volume reduction of 25-35% (dry basis). itrification results in an easily-crushed, glassy product. his Summary was developed by the EPA's Risk Reduction Engineering Laboratory, Cincinnati, Ohio, to announce key findings of the SITE Emerging Technology program that is documented in a separate report.