Title: Devon station repowering study: Phase 2, Conceptual design of a coal gasification facility: Final report
Abstract: The 1985 conceptual design and economic analysis of a coal gasification facility producing medium-Btu fuel gas from a Pittsburgh bituminous coal is described in this report. The gasification facility is sited at Connecticut Light and Power Company's Devon Generating Station, Milford, Connecticut. The report was prepared by Lummus Crest, Inc., United Engineers and Constructors, and Northeast Utilities Service Company. Northeast Utilities Service Company and the Electric Power Research Institute co-sponsored the study. The facility design incorporates the proprietary Shell Coal Gasification Process. This process uses a pressurized, high temperature, entrained flow gasification reactor to perform the initial conversion of coal to gas. Dry pulverized coal, oxygen, and a small quantity of steam is fed into the process to produce a medium-Btu gas with a higher heating value of 301.0 Btu/SCF. The plant consumes 5688 tons of coal per day to produce 5083 MM Btu/hr of medium-Btu gas. The synthetic gas is supplied to a combined cycle plant adjacent to the proposed facility. Minimal integration of the gasification and combined cycle systems is included in the plant design. A description of the site and plant facilities, including overall material and energy balances, block flow diagrams, and site arrangement drawings, are presented.more » A description of the major systems, including an equipment summary, are also provided. An overall capital cost estimate and project execution schedule were prepared. An engineering and economic analysis of the impact of adding the coal gasification facility to the repowering project is presented. This analysis, prepared by Northeast Utilities Service Company, compares the gasified coal combined cycle plant with two options, a pulverized coal steam plant and the repowered plant without the gasification facility. 13 figs., 23 tabs.« less
Publication Year: 1988
Publication Date: 1988-12-01
Language: en
Type: article
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