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Process For Removing Sulfur And Producing Enhanced Quality And Environmentally Acceptable Products For Energy Production From Coal, John M. Stencel, Francis J. Derbyshire
Process For Removing Sulfur And Producing Enhanced Quality And Environmentally Acceptable Products For Energy Production From Coal, John M. Stencel, Francis J. Derbyshire
Center for Applied Energy Research Faculty Patents
A process for producing enhanced quality adsorbent carbons and environmentally acceptable materials for energy production from coal includes an initial step of physically cleaning the coal to remove organic sulfur and mineral tailings. Next, a coal slurry of feedstock and water is prepared. Phosphoric acid is then mixed into the water of the coal slurry to provide by volume 15-85% and more preferably 50-85% phosphoric acid. The slurry is then heated and held in a temperature range between 85° and 230° C. for a period of at least five minutes to allow the phosphoric acid to penetrate deeply into the …