FGD and DeNOx
NEWSLETTER       

                                                                                                         September 2005
                                                                                                             No. 329

Wet Limestone FGD and SCR for 1000 MW Standard Design in Korea

After developing standard designs for 500-and 800-MW supercritical and advanced supercritical coal-fired power plants, Korea Power Engineering Company (KOPEC) and Korea Electric Power Research Institute (KEPRI) are now working on a 1000-MW design. The goal is have this design ready for power plants built for 2012 operation. This design will incorporate a high-efficiency electrostatic precipitator, wet limestone-gypsum FGD system, two-stage low NO_x burners and SCR.

NO_x emissions will be less than 15 ppm (reduction of more than 90 percent), with anhydrous ammonia used for the SCR and NH₃ slip less than 2 ppm. The FGD system will have an SO₂ removal efficiency of more than 97 percent, produce SO₂ emissions of less than 20 ppm and produce saleable gypsum.  Dong-Chun Youk, Do-Youn Cho, Yong-Jun Shin, and Chi-Seob Lee of KOPEC and Chong-Young Kim of KEPRI told Power-Gen Europe attendees that SO₃ will be removed by the non-leakage GGH and ESP. The SO₃ will condense onto the flyash in the GGH.

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