Multicomponent compositions for mercury removal
AssigneeNovinda Corporation
InventorThomas K. Gale
Life of this patent
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Abstract
Herein are disclosed compositions of matter, processes of manufacture and processes of use of solid state admixtures that include an inorganic base and a sulfide selected from the group consisting of an ammonium sulfide, an alkali metal sulfide, an alkali-earth metal sulfide, transition metal sulfide, and a mixture thereof. The composition can include solid state inorganic bases (e.g., calcium hydroxide and sodium sesquicarbonate) and/or gaseous bases (e.g., ammonia) and, optionally, a support material for one or more of the inorganic base and sulfide. The compositions are useful for capturing environmental contaminants, for example, from the flue gas of a coal fired power plant.
Claims12
A composition comprising:
- a particulate support carrying an inorganic base selected from the group consisting of sodium sesquicarbonate (trisodium hydrogendicarbonate), sodium carbonate, sodium bicarbonate, potassium carbonate, calcium carbonate, and a mixture thereof, and a sulfide selected from the group consisting of an ammonium sulfide, an alkali metal sulfide, an alkali-earth metal sulfide, transition metal sulfide, and a mixture thereof;
- wherein the inorganic base and the sulfide are individually distributed on a surface of the particulate support, and the inorganic base does not include calcium hydroxide, and the composition does not include calcium hydroxide.
The process of capturing an environmental contaminant from a fluid, the process comprising:
- admixing a fluid containing an environmental contaminant with a composition comprising a particulate support carrying an inorganic base selected from the group consisting of sodium sesquicarbonate (trisodium hydrogendicarbonate), sodium carbonate, sodium bicarbonate, potassium carbonate, calcium carbonate, and a mixture thereof, and a sulfide selected from the group consisting of an ammonium sulfide, an alkali metal sulfide, an alkali-earth metal sulfide, transition metal sulfide, and a mixture thereof;
- wherein the inorganic base and the sulfide are individually distributed on a surface of the particulate support, and the inorganic base does not include calcium hydroxide and the composition does not include calcium hydroxide;
- and then separating the fluid and the composition;
- wherein the separated fluid includes a lower concentration of the environmental contaminant after separation from the composition.
Dependencies are inferred from the claim text.