Mercury control with regenerative activated coke technologyDownload Now
Many issues face coal-fired utilities with respect to environmental demands, some based on regulations and others based on local pressures. These include increasingly stringent control of criteria pollutants, anticipated federal and state requirements for mercury control, issues revolving around water use and water disposal, plume visibility, overall plant thermal efficiency, and the future considerations for climate change issues. For utilities that burn PRB and other low-sulfur coals, an exemplary reference project is the reconstruction of the Isogo Power Station by J-Power. This project replaced two vintage coal-fired units, and within the same site limits, more than doubled generation capacity to 2x600MW with ultrasupercritical boilers fitted with SCR, ESPs and advanced generation ReACT technology. The controls provide low emissions from the high-efficiency coal-fired boiler plant and allow the plant to operate as the cleanest coal-fired power plant in the world in terms of emissions intensity, at emissions levels that are equivalent to natural gas-fired power plants.