Advanced Flue Gas Desulfurization (AFGD) Demonstration Project, A DOE Assessment

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Description

The AFGD process as demonstrated by Pure Air at the Bailly Station offers a reliable and cost-effective means of achieving a high degree of SO{sub 2} emissions reduction when burning high-sulfur coals. Many innovative features have been successfully incorporated in this process, and it is ready for widespread commercial use. The system uses a single-loop cocurrent scrubbing process with in-situ oxidation to produce wallboard-grade gypsum instead of wet sludge. A novel wastewater evaporation system minimizes effluents. The advanced scrubbing process uses a common absorber to serve multiple boilers, thereby saving on capital through economies of scale. Major results of the ... continued below

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199 Kilobytes pages

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National Energy Technology Laboratory (U.S.) August 31, 2001.

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Description

The AFGD process as demonstrated by Pure Air at the Bailly Station offers a reliable and cost-effective means of achieving a high degree of SO{sub 2} emissions reduction when burning high-sulfur coals. Many innovative features have been successfully incorporated in this process, and it is ready for widespread commercial use. The system uses a single-loop cocurrent scrubbing process with in-situ oxidation to produce wallboard-grade gypsum instead of wet sludge. A novel wastewater evaporation system minimizes effluents. The advanced scrubbing process uses a common absorber to serve multiple boilers, thereby saving on capital through economies of scale. Major results of the project are: (1) SO{sub 2} removal of over 94 percent was achieved over the three-year demonstration period, with a system availability exceeding 99.5 percent; (2) a large, single absorber handled the combined flue gas of boilers generating 528 MWe of power, and no spares were required; (3) direct injection of pulverized limestone into the absorber was successful; (4) Wastewater evaporation eliminated the need for liquid waste disposal; and (5) the gypsum by-product was used directly for wallboard manufacture, eliminating the need to dispose of waste sludge.

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199 Kilobytes pages

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OSTI as DE00787341

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  • Other Information: PBD: 31 Aug 2001

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  • Report No.: DOE/NETL-2001/1158
  • Grant Number: NONE
  • DOI: 10.2172/787341 | External Link
  • Office of Scientific & Technical Information Report Number: 787341
  • Archival Resource Key: ark:/67531/metadc725033

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  • August 31, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 11, 2016, 12:14 p.m.

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National Energy Technology Laboratory (U.S.). Advanced Flue Gas Desulfurization (AFGD) Demonstration Project, A DOE Assessment, report, August 31, 2001; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc725033/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.