Extraction of Potential Pollutants From Ohio Coal by Synergistic Use of Supercritical Fluids. Final Report

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A synergistic supercritical extraction process was developed and its feasibility demonstrated using a semi-batch extraction process unit. The process was found to be effective in selectively cleaning organic sulfur from Ohio coals. Optimal case involved a mixture of CO{sub 2}, H{sub 2}O, and CH{sub 3}OH, and the removal of organic sulfur ranged from 35 to 55%. Combined with pyrite and mineral matter removal by gravity, the resulting coals would have 20--30% increased heating values and SO{sub 2} emissions would be down to 1.2--1.5 pounds per million Btu, thus meeting compliance requirements. Estimated cleaning cost including pyrite removal is $25 to … continued below

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63 p.

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Lee, S. August 3, 1990.

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  • Lee, S. Akron Univ., OH (United States). Dept. of Chemical Engineering

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  • Ohio Ohio State Government, Columbus, OH (United States)

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Description

A synergistic supercritical extraction process was developed and its feasibility demonstrated using a semi-batch extraction process unit. The process was found to be effective in selectively cleaning organic sulfur from Ohio coals. Optimal case involved a mixture of CO{sub 2}, H{sub 2}O, and CH{sub 3}OH, and the removal of organic sulfur ranged from 35 to 55%. Combined with pyrite and mineral matter removal by gravity, the resulting coals would have 20--30% increased heating values and SO{sub 2} emissions would be down to 1.2--1.5 pounds per million Btu, thus meeting compliance requirements. Estimated cleaning cost including pyrite removal is $25 to 45 per ton. The most important cost factor is the operation at high pressures.

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63 p.

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OSTI; Ohio Coal Development Office, 77 S. High Street, P.O. Box 1001, Columbus, OH 43266-0001

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  • Other Information: PBD: 3 Aug 1990

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  • August 3, 1990

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  • Nov. 28, 2018, 2:33 p.m.

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  • Jan. 12, 2021, 3:10 p.m.

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Lee, S. Extraction of Potential Pollutants From Ohio Coal by Synergistic Use of Supercritical Fluids. Final Report, report, August 3, 1990; Columbus, Ohio. (https://digital.library.unt.edu/ark:/67531/metadc1384975/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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