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US 9,321,032 B1Granted
Inherently concrete-compatible carbon sorbents for mercury removal from flue gas
AssigneeCalgon Carbon Corporation
InventorsNicholas R. Pollack, Richard A. Hayden
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Abstract
A sorbent composition and process of making sorbent designed for the removal of contaminants from flue gas and subsequent use in cement or concrete formulations are discussed. The sorbent composition comprises a coal feed stock prepared to have a total BET surface area of at least 350 m2/g, and wherein the sorbent has a cumulative surface area less than 10 m2/g for pore diameters between 0.01 and 0.1 microns, a cumulative pore volume less than 0.055 cc/g for pore diameters between 0.01 and 0.1 microns, or both.
Claims11
A flue gas sorbent comprising, a carbonaceous char having:
- a total BET surface area of at least 350 m2/g;
- and
- a cumulative surface area less than 10 m2/g for pore diameters between 0.01 and 0.1 microns, a cumulative pore volume less than 0.055 cc/g for pore diameters between 0.01 and 0.1 microns, or a combination thereof;
- wherein the porous carbonaceous char does not significantly adsorb air entrainment admixture (AEA).
1 more element
Dependencies are inferred from the claim text.