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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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