Comparison of SO{sub 2} removal by limestone, limestone + DBA, and magnesium-containing lime in the wet scrubbers at the Gibbons Creek Steam Electric Station

Technical Report · Thu Jun 01 04:00:00 EDT 1995

OSTI ID:121472

Azarm, F; Kazen, P K; Jones, G R ^[1]

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1. Texas Municipal Power Agency, Bryan, TX (United States); and others

Phase II of the 1990 Clean Air Act Amendments requires the Gibbons Creek Steam Electric Station (Gibbons Creek) to reduce the SO{sub 2} emissions from 1.2 lb/mmBtu to 0.85 lb/mmBtu by the year 2000. One option, which may avoid flue gas desulfurization (FGD) system modifications, is to change to a more reactive reagent. To determine the feasibility of switching from limestone to a magnesium-containing lime (Mg-Lime) or to limestone with dibasic acid (DBA), Texas Municipal Power Agency (TMPA) and Chemical Lime Company (CLC) developed a test program for a full scale demonstration of these two reagent systems at Gibbons Creek. The results given here show that both Mg-Lime and limestone + DBA, under some conditions, can achieve the Phase II SO{sub 2} emissions limit. The variables tested to determine optimum conditions were L/G, pH, and magnesium or DBA concentration. Sulfur emulsion was added during all tests to prevent excessive oxidation of sulfite to sulfate. Data from these tests will be used by TMPA to evaluate this option for meeting Phase II regulations.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 121472
• Report Number(s): EPRI-TR--105258-Vol.1; CONF-950332--Vol.1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
AIR POLLUTION CONTROL
CALCIUM
CLEAN AIR ACTS
COMPARATIVE EVALUATIONS
DESULFURIZATION
FLUE GAS
FOSSIL-FUEL POWER PLANTS
LIMESTONE
MAGNESIUM
PERFORMANCE TESTING
REAGENTS
REMOVAL
SCRUBBERS
SULFUR DIOXIDE