Method for reducing the amount of a pollutant in a flue gas resulting from the combustion of a fossil fuel
AssigneeOmni Materials, Inc.
InventorsDonald H. Stowe, Jr., Ward S. Blakefield
Life of this patent
Estimating the term…
Abstract
A process for removal of a pollutant from a flue gas. An alkaline admixture is coated with a coating agent that improves dispersability and delays calcination of the alkaline admixture within a combustion zone and results in a coated alkaline admixture. The coated alkaline admixture is introduced to the boiler to create a reaction that removes the pollutants from the flue gas.
Claims21
A process for reducing the amount of a pollutant in a flue gas resulting from combustion of fossil fuel in a boiler comprising:
- (a) providing an alkaline admixture having a siloxane coating agent that improves dispersability and delays calcination of the alkaline admixture within a combustion zone;
- and
- (b) introducing the alkaline admixture to the boiler to create a reaction that reduces the amount of the pollutant in the flue gas.
A process for reducing the amount of a pollutant in a flue gas resulting from combustion of fossil fuel in a boiler comprising:
- (a) providing an alkaline admixture comprised of CaO, CaCO3, MgO and MgCO3 having a coating agent that improves dispersability and delays calcination of the alkaline admixture within a combustion zone, the amount of CaO, CaCO3, MgO and MgCO3 are each from 10 to 35% by weight of the total weight of the alkaline admixture;
- and
- (b) introducing the alkaline admixture to the boiler to create a reaction that reduces the amount of the pollutant in the flue gas.
A process for reducing the amount of a pollutant in a flue gas resulting from combustion of fossil fuel in a boiler comprising:
- (a) providing an alkaline admixture having a coating agent that improves dispersability and delays calcination of the alkaline admixture within a combustion zone, the amount of the coating agent is from 0.05–0.15 percent by weight of the alkaline admixture;
- and
- (b) introducing the alkaline admixture to the boiler to create a reaction that reduces the amount of the pollutant in the flue gas.
A process for reducing the amount of a pollutant in a flue gas resulting from combustion of fossil fuel in a boiler comprising:
- (a) providing an alkaline admixture comprising at least 5% magnesium by weight of the alkaline admixture, the alkaline admixture having a coating agent that improves dispersability and delays calcination of the alkaline admixture within a combustion zone;
- and
- (b) introducing the alkaline admixture to the boiler to create a reaction that reduces the amount of the pollutant in the flue gas.
A process for reducing the amount of sulfur trioxide in a flue gas resulting from combustion of fossil fuel in a boiler comprising:
- (a) providing an alkaline admixture having a coating agent that improves dispersability and delays calcination of the alkaline admixture within a combustion zone;
- and
- (b) introducing the alkaline admixture to the boiler to create a reaction that reduces the amount of sulfur trioxide in the flue gas.
A process for reducing the amount of mercury in a flue gas resulting from combustion of fossil fuel in a boiler comprising:
- (a) providing an alkaline admixture having a coating agent that improves dispersability and delays calcination of the alkaline admixture within a combustion zone;
- and
- (b) introducing the alkaline admixture to the boiler to create a reaction that reduces the amount of mercury in the flue gas.
A process for reducing the amount of arsenic in a flue gas resulting from combustion of fossil fuel in a boiler comprising:
- (a) providing an alkaline admixture having a coating agent that improves dispersability and delays calcination of the alkaline admixture within a combustion zone;
- and
- (b) introducing the alkaline admixture to the boiler to create a reaction that reduces the amount of arsenic in the flue gas.
A process for reducing the amount of a pollutant from a flue gas resulting from combustion of fossil fuel comprising:
- (a) providing an alkaline admixture having a coating agent that improves dispersability and delays calcination of the alkaline admixture within a combustion zone;
- and
- (b) adding the alkaline admixture to a fossil fuel feed within a combustion zone and thereby introducing the alkaline admixture to the boiler to create a reaction that reduces the amount of the pollutant in the flue gas.
Dependencies are inferred from the claim text.