Sorbents for coal combustion
AssigneeNOx II, Ltd.
InventorDouglas C. Comrie
Life of this patent
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Abstract
Sorbent compositions containing halogen and calcium are added to coal to mitigate the release of sulfur and/or other harmful elements, including mercury, into the environment during combustion of coal containing natural levels of mercury.
Claims16
A method for reducing emissions of mercury and sulfur arising from combustion of coal in the furnace of a coal burning system, comprising adding a sulfur sorbent composition and a mercury sorbent composition into the coal burning system, wherein the mercury sorbent composition comprises a bromine compound, and the sulfur sorbent composition comprises cement kiln dust.
A method for reducing the amount of mercury released into the atmosphere from burning coal in a coal burning system, comprising adding a first sorbent comprising a halogen and a second sorbent composition comprising calcium and further comprising greater than 2% by weight silica and greater than 2% by weight alumina into the coal burning system.
Dependencies are inferred from the claim text.