Table

Assessment with Respect to Flexibility of Application

FGD Process Criterion

High Low Retrofit Waste SO2/NOX

Sulfur Sulfur Ease Management Removal

Limestone

Natural oxidation H H

Forced oxidation H M

MgO-lime H L

High-calcium lime H M

Dual-alkali

Lime H L

Limestone H L

Dry scrubbing M H

Dry injection L H

Wellman-Lord H L

Regenerable MgO H M

Source: Elliot, T. C., Ed., Standard Handbook of Powerplant Engineering, McGraw-Hill, New York, 1989. With permission.

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