| 20080250706 | COAL DESULPHURIZATION - A process for reducing the pyritic sulphur content of coal includes reacting the coal with a ferric ion solution to oxidise the pyritic sulphur to elemental sulphur, and separating the coal, which includes elemental sulphur from the ferric ion solution. The coal and the elemental sulphur are then reacted in an acidic solution with nitric acid to oxidize the elemental sulphur, forming sulphuric acid. The coal is separated from the acidic sulphuric acid containing solution to provide coal with a reduced pyritic sulphur content. | 10-16-2008 |
