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Most high temperature thermal processes, such as incineration of wastewater sludges, offer a variety of opportunities for energy recovery. Thermal destruction of organics generally requires temperatures in the 1400-1600 F (760- 870 C) range. The waste gases represent a valuable energy resource, which when effectively recovered can have a positive impact on the operating costs at the installation.

This paper reviews a variety of heat recovery systems utilized from the late 1960's through today. Units include fluidizing air preheaters, hot oil heaters for dryers, waste heat recovery boilers, and plume suppression heat exchangers.

Discussion will include long term operating histories and advancements, as well as design and operating considerations. Metallurgy, refractory, corrosion, erosion, fatigue, and other selection criteria are highlighted.

Document Type: Research Article


Publication date: January 1, 2003

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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