Greenidge Multi-pollutant Control Project
نویسنده
چکیده
The Greenidge Multi-Pollutant Control Project is being conducted at the 107-MW AES Greenidge Unit 4 as part of the U.S. Department of Energy’s (DOE) Power Plant Improvement Initiative (PPII) to demonstrate an innovative combination of technologies that is well-suited for reducing emissions from the nation’s large fleet (~60 GW) of smaller coal-fired units. The technologies, which include a NOxOUT CASCADE hybrid selective non-catalytic reduction / selective catalytic reduction (SNCR/SCR) system and a Turbosorp circulating fluidized bed dry scrubber, were installed in 2006 with a capital cost of < $350/kW and a footprint of < 0.5 acre, substantially less than the cost and space that would have been required for a conventional SCR and wet scrubber. Testing in 2007 with 2.4-3.2% sulfur coal demonstrated the system’s ability to reduce NOx emissions to 0.10 lb/mmBtu and emissions of SO2, SO3, and HCl by 96-97%. Mercury emissions were reduced by more than 95% without any activated carbon injection (ACI). Additional tests have been conducted through mid-2008 to establish the effects of plant operating conditions on the performance of the multi-pollutant control system. These tests have consistently shown at least 95% SO2 removal, ≥ 95% mercury removal (with no activated carbon injection), and very low emissions of SO3, HCl, and particulate matter. NOx emissions have averaged between 0.10 and 0.15 lb/mmBtu during longer-term operation. The performance of the multi-pollutant control system during its first year of commercial operation is discussed, and process economics are presented.
منابع مشابه
GREENIDGE MULTI-POLLUTANT CONTROL PROJECT Preliminary Public Design Report Principal Author
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