Abstract

A mercury removal system and methods thereof include at least one supply system, at least one cooling system and at least one separation system The supply system is connected to introduce at least beneficiated fly ash particles into an exhaust stream The exhaust stream comprises at least one exhaust gas and mercury and at least a portion of the mercury in the exhaust stream adheres to the introduced beneficiated fly ash particles The cooling system cools the exhaust stream before or after the connection of the supply system to the exhaust stream The separation system separates from the exhaust stream and outputs at least a portion of the introduced beneficiated fly ash particles with the adhered mercury.

IPC Classes  ?

• B01D 53/46 - Removing components of defined structure

Abstract

A method and system for reclaiming and beneficiating fly ash particles includes recovering at least a portion of fly ash particles from reclaimed feed and supplying at least a portion of the recovered fly ash particles to at least one mixing reactor (32) with a chamber where at least a portion of the supplied fly ash particles are thermally beneficiated in fluid bed reactor (18)

IPC Classes  ?

• C04B 18/06 - Combustion residues, e.g. purification products of smoke, fumes or exhaust gases

Abstract

A method and system for controlling emissions with ammonia recovery and fly ash beneficiation in accordance with the present invention includes introducing ammonia to react with at least a portion of sulfur trioxides (3) in an exhaust emission an result in at least one or more ammoniated compounds (32). At least a portion of fly ash particles and the ammoniated compounds in the exhaust emission are precipitated (24) and at least the precipitated fly ash particles are beneficiated. At least a portion of the beneficiated fly ash particles which are heated are mixed with the precipitated ammoniated compounds to recover at least a portion o the ammonia. The recovered ammonia is reused in introducing ammonia (22) to react with at least a portion of sulfur trioxides.

IPC Classes  ?

• B01D 53/50 - Sulfur oxides
• B01D 53/56 - Nitrogen oxides
• B01D 53/60 - Simultaneously removing sulfur oxides and nitrogen oxides
• B01J 12/00 - Chemical processes in general for reacting gaseous media with gaseous mediaApparatus specially adapted therefor
• B01J 10/00 - Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particlesApparatus specially adapted therefor

Abstract

A method and system for controlling one or more emissions includes introducing ammonia to react with at least a portion of sulfur trioxides in an exhaust emission (32) and result in at least one or more ammoniated compounds. At least a portion of fly ash particles and the ammoniated compounds in the exhaust emission are precipitated (24). At least a portion of the ammonia from the precipitated ammoniated compounds is recovered (26) with heat from the exhaust emission (38(3))and the recovered ammonia (40(1)) is reused.

IPC Classes  ?

• B01D 46/50 - Means for discharging electrostatic potential
• B01D 53/50 - Sulfur oxides
• B01D 53/56 - Nitrogen oxides
• B01D 53/60 - Simultaneously removing sulfur oxides and nitrogen oxides
• B01J 10/00 - Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particlesApparatus specially adapted therefor
• B01J 12/00 - Chemical processes in general for reacting gaseous media with gaseous mediaApparatus specially adapted therefor
• C01C 1/02 - Preparation or separation of ammonia
• C01C 1/242 - Preparation from ammonia and sulfuric acid or sulfur trioxide

Abstract

A system and method for decomposing ammonia from fly ash contaminated with ammonia is provided which includes maintaining the temperature of a bed of ammonia- contaminated fly ash at a decomposition temperature greater than 500°F and less than 842°F to decompose the ammonia from the fly ash. In a preferred embodiment, the ammonia- laden fly ash is maintained at a temperature less than a lowest carbon combustion temperature at which substantial combustion of carbon in fly ash begins to occur. A preferred embodiment includes a first chamber operating at a decomposition temperature greater than 5000F and less than 842°F followed by a second chamber operating at a higher carbon combustion temperature for carbon burn-out.

IPC Classes  ?

• C01C 1/02 - Preparation or separation of ammonia

Abstract

A system (10) and method for beneficiation of fly ash particles (43) which at least partially reduces sulfur emissions includes at least one mixing reactor (12) with a chamber (26) and at least one exhaust (58), at least one fly ash source connected to provide fly ash particles to the chamber, at least one sorbent (18) source, and at least one sluid supply system (82). The sorbent source provides at leas one type of sorbent particles to be mixed with the fly ash particles to reduce sulfur emissions. A mass of the fly ash particles in the chamber is greater than a mass of the sorbent particles in the chamber. The fluid supply system provides at least one fluid to the chamber during a beneficiation of at least a portion of the fly ash particles in the chamber.

IPC Classes  ?

• C04B 18/04 - Waste materialsRefuse