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EPA 540/F-94/508
Reductive Photo-Dechlorination (RFD)
Process for Safe Conversion of Hazardous
Chlorocarbon Waste Streams
ENERGIA, Inc.
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Reductive Photo-Dechlorination (RFD) Process for Safe
Conversion of Hazardous Chlorocarbon Waste Streams ENERGIA, Inc. (66K)
ABSTRACT
Reductive Photo-Dechlorination (RFD) Process for Safe Conversion of Hazardous
Chlorocarbon Waste Streams
ENERGIA, Inc.
Emerging Technology Bulletin
EPA 540/F-94/508
August 1994
The HFB technology treats contaminated solids and sludges by incinerating organic
compounds and detoxifying volatile metals. The system consists of three stages:
a spouted bed, a fluidized afterburner, and a high-temperature particulate soil
extraction system. The spouted bed rapidly heats wastes to between 1500 and
1700 oF under oxidizing conditions. Residual organic vapors, volatile metals,
and fine soil particles exit through the bottom while larger particles are retained
for additional heating. The afterburner incinerates residual organic compounds,
resulting in a 99.99 percent destruction efficiency. The afterburner contains
lime, kaolinite, or silica-supported bauxite to absorb metal vapors, capture
fine particles, and promote the formation of insoluble metal silicates. The
third stage consists of cyclones that remove hot, clean soil from exhaust air.
Off-gases are quenched and passed through a conventional baghouse to capture
condensed metal vapors. The technology was accepted into the Emerging Technology
Program in 1990. Design and construction of the commercial prototype and a limited
shakedown are complete.
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Posted February 26, 1999
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