Six dampers (two in the bypass ducting and four in each of the entering and exiting ducting to the FGD system) allow flue gas to bypass the FGD system and go directly to the stack.

• 6个档板（两个在旁路烟道上，四个在脱硫岛进口和出口侧）允许烟气不经过脱硫岛而直接进入烟囱。