Survey of flue gas desulfurization systems: St. Clair Station, Detroit Edison Co. Final subtask report January--June 1977

Technical Report · Wed Mar 01 04:00:00 EST 1978

OSTI ID:6529488

Laseke, Jr, B A

results of a survey of the flue gas desulfurization (FGD) system retrofitted on Unit 6 of Detroit Edison Co.'s St. Clair Station are given. The experimental FGD system, which operated through a 2-month (October 1976-January 1977) demonstration program, utilized a limestone slurry to remove SO/sub 2/ in two parallel scrubbing trains. Each train included a radial-flow venturi scrubber and a high-velocity countercurrent spray tower absorber to control fly ash and SO/sub 2/. Flue gas cleaning wastes were discharged from a reaction tank to an on-site clay-lined settling pond. Clear water was recycled from the pond to the FGD system for further use. The FGD system was designed to remove SO/sub 2/ and fly ash from high sulfur eastern coal. Actual operation was on low sulfur western coal. Following the demonstration, the FGD system was shut down and modified for resumption of particulate scrubbing on low sulfur western coal in the fall of 1977. Some SO/sub 2/ is removed from the flue gas during particulate removal because of the alkalinity of the collected fly ash and the limestone additive used for pH control of the scrubbing solution.

• Research Organization: PEDCO-Environmental, Inc., Cincinnati, OH (USA)
• OSTI ID: 6529488
• Report Number(s): PB-281106
• Country of Publication: United States
• Language: English

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