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Power Without Acid

by Richard Voelker, Freelance Writer; 1110 W. North Ave., Pittsburgh, PA 15233,


Serial Information: Civil Engineering—ASCE, 1989, Vol. 59, Issue 7, Pg. 45-47


Document Type: Feature article

Abstract:

Anticipating tighter acid rain controls, DOE is developing duct injection units that can be attached to existing powerplants. In a typical duct injection system, lime is sprayed into existing ductwork located just after the combustion chamber. Fly ash in the exhaust stream reacts with the small pieces of lime, then with sulfur oxides, and finally is captured by a filter fabric. The goal of DOE's research is to have commercially ready systems by 1992.

Subject Headings: Lime | Duct | Acid rain | Sulfur | Rivers and streams | Power plants | Fly ash

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