Sorbents for coal combustion
AssigneeNOx II, Ltd.
InventorDouglas C. Comrie
Life of this patent
Estimating the term…
Abstract
Sorbent compositions containing calcium and iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury.
Claims17
A method for reducing emissions of mercury, sulfur and/or other harmful elements arising from combustion of coal in a coal burning facility, the method comprising:
- applying a sorbent composition onto coal prior to combustion at a coal producer, wherein coal comprising the sorbent composition is then delivered to the coal burning facility, wherein the sorbent composition comprises one or more of calcium bromide (CaBr2), calcium iodide (CaI2), sodium iodide (NaI), and potassium iodide (KI);
- combusting the coal containing the sorbent composition in a furnace to produce ash and combustion gases;
- measuring at least one of a level of sulfur gases in the combustion gases or a level of mercury gases in the combustion gases;
- and
- adjusting the level of the sorbent composition applied onto the coal based on the measured level of sulfur gases or measured level of mercury gases.
A method for reducing emissions of mercury, sulfur and/or other harmful elements arising from combustion of coal in a coal burning facility, the method comprising:
- applying a sorbent composition onto coal prior to combustion, wherein the sorbent composition comprises calcium iodide (CaI2), sodium iodide (NaI), or potassium iodide (KI);
- combusting the coal containing the sorbent composition in a furnace to produce ash and combustion gases;
- measuring at least one of a level of sulfur gases in the combustion gases or a level of mercury gases in the combustion gases;
- and
- adjusting the level of the sorbent composition applied onto the coal based on the measured level of sulfur gases or measured level of mercury gases.
A method for reducing emissions of mercury, sulfur and/or other harmful elements arising from combustion of coal in a coal burning facility, the method comprising:
- applying a sorbent composition onto coal prior to combustion at a coal producer, wherein coal comprising the sorbent composition is then delivered to the coal burning facility, wherein the sorbent composition comprises calcium bromide (CaBr2);
- combusting the coal containing the sorbent composition in a furnace to produce ash and combustion gases;
- measuring at least one of a level of sulfur gases in the combustion gases or a level of mercury gases in the combustion gases;
- and
- adjusting the level of the sorbent composition applied onto the coal based on the measured level of sulfur gases or measured level of mercury gases.
Dependencies are inferred from the claim text.