now demolished 160 MW coal-fired power plant at the site, and while it can produce nearly four times the power of the unit it replaced, it has far lower emissions of SO2, NOx, and particulates. There is potential for carbon capture and geologic sequestration in the context of the Edwardsport IGCC project, with space reserved at the site for CO2 capture equipment. Also, Duke initiated a front-end engineering and design study for carbon capture and filed a $121 million request with Indiana Utility Regulatory Commission for detailed characterization of deep saline aquifers, depleted oil or gas fields, and enhanced oil recovery. Schlumberger Carbon Services is to begin site assessment for deep saline sequestration near the plant. Eastman Chemical Company Kingsport Plant Coal gasification to produce chemicals One of the earliest and most notable coal gasification-based chemical plants in the United States is owned and operated by Eastman Chemical Company and based in Kingsport, Tennessee. Known as the Eastman Integrated Coal Gasification facility, it first opened in 1983 and is designed to process syngas from the gasification of Southwest Virginia and Eastern Kentucky coal, using Texaco gasifiers (now GE gasifier technology). The intermediate products of syngas conversion are methanol and CO; these are further converted into products consisting of 500 million pounds per year of acetyl chemicals including acetic anhydride and acetic acid, enough to supply half of Eastman’s raw acetyl needs. Acetyl chemicals are important to many of Eastman’s products, but especially those at the Kingsport site, where five of seven manufacturing divisions rely on acetyls as a raw material. The success of the operation led to a decision to expand the plant capacity to an excess of 1 billion pounds per year to meet all of Eastman's needs. The process configuration at Eastman is fairly complex, as a consequence of the feedstock requirements associated with multiple chemical syntheses involved. Part of the syngas resulting from the gasification of feed coal is shifted, and a Rectisol process is utilized for sulfur removal and CO2 removal. Recovered CO2 is sold for use in making carbonated beverages. Great Plains Synfuels Plant Lignite gasification to produce synthetic natural gas or ammonia The Great Plains Synfuels Plant (GPSP) in Beulah, North Dakota has been in operation since 1984 producing synthetic natural gas (SNG) from lignite coal, and remains the only coal-to-SNG facility in the United States. GSPS is operated by the Dakota Gasification Company.