Lime WFGD

Gypsum Production From Lime-Based WFGD Processes By MET

Lime provides higher SO₂absorption capacity compared to limestone
The highly alkaline reagent results in reduced Liquid-to-Gas (L/G) ratio and therefore reduced power consumption relative to limestone-based scrubbing
The higher reactivity of lime requires less retention time, reducing size and cost of the reaction tank
Lower L/G (lower power) than limestone WFGD
Utilizes smaller tank size due to requiring less reaction tank retention time
Site specific economic factors may favor lime over limestone WFGD

Thirty+ years of commercial operation at PacifiCorp, Hunter Station Units 1, 2 and 3 and Huntington Station Unit 1
25+ years of commercial operation at Allegheny Power, Mitchell Unit 3
25+ years of commercial operation at Allegheny Power, Harrison Units 1, 2 and 3
10+ years of commercial operation at for Minnkota Power Cooperative, Milton R. Young, Unit 1