EPA 540/F-93/508
Spouted Bed Reactor
Energy and Environmental Research Corporation
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Spouted Bed Reactor Energy and Environmental Research
Corporation (66K)
ABSTRACT
Spouted Bed Reactor
Energy and Environmental Research Corporation
Emerging Technology Bulletin
EPA 540/F-93/508
August 1993
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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