Patents Assigned to Babcock Power Environmental Inc.
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Patent number: 10618823Abstract: A wastewater treatment system includes a circulating fluidized bed evaporator defining a longitudinal axis vertical with respect to gravity. The evaporator has a wastewater inlet to provide wastewater to the circulating fluidized bed evaporator. A heat inlet is axially below the wastewater inlet to provide heat to the circulating fluidized bed evaporator for evaporating the wastewater. An outlet is axially above the wastewater inlet and the heat inlet.Type: GrantFiled: November 26, 2018Date of Patent: April 14, 2020Assignee: Babcock Power Environmental Inc.Inventors: Angelos Kokkinos, Matthew Quitadamo
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Patent number: 10138139Abstract: A wastewater treatment system includes a circulating fluidized bed evaporator defining a longitudinal axis vertical with respect to gravity. The evaporator has a wastewater inlet to provide wastewater to the circulating fluidized bed evaporator. A heat inlet is axially below the wastewater inlet to provide heat to the circulating fluidized bed evaporator for evaporating the wastewater. An outlet is axially above the wastewater inlet and the heat inlet.Type: GrantFiled: February 12, 2016Date of Patent: November 27, 2018Assignee: Babcock Power Environmental Inc.Inventors: Angelos Kokkinos, Matthew Quitadamo
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Patent number: 8318115Abstract: The invention provides a system for regenerative selective catalytic reduction including a catalyst chamber that contains a catalyst for reducing NOX in a gas stream passing therethrough. The system also includes a reactant injector, first and second heat exchangers, and a valve manifold adapted to direct a substantially continuous gas stream through the heat exchangers and catalyst chamber in such a manner as to flow through the catalyst chamber in the same flow direction during each cycle of the system. The invention also provides a process of regenerative selective catalytic reduction wherein the gas stream through the catalyst chamber flows in the same flow direction during each cycle of the process.Type: GrantFiled: January 5, 2012Date of Patent: November 27, 2012Assignee: Babcock Power Environmental, Inc.Inventors: John R. Harold, James D. Dougherty
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Patent number: 8142744Abstract: An air pollution control system includes an emission treatment system configured to receive flue gas, to reduce at least one pollutant therefrom, and to output emission treated flue gas. A first air heater in fluid communication with the emission treatment system includes a heat exchanger for heating forced air introduced thereto above a base temperature and thereby cooling emission treated flue gas from the emission treatment system to a stack discharge temperature. A second air heater in fluid communication with the first air heater to receive heated forced air therefrom includes a heat exchanger for heating forced air introduced thereto to a preheat temperature for combustion in a boiler and thereby cooling flue gas introduced from a boiler to the second air heater to an emission treatment temperature. The second air heater is in fluid communication with the emission treatment system to introduce cooled flue gas thereto.Type: GrantFiled: March 17, 2011Date of Patent: March 27, 2012Assignee: Babcock Power Environmental Inc.Inventors: Richard F. Abrams, Mark R. Lewis, Jeffrey Penterson
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Patent number: 8124017Abstract: The invention provides a system for regenerative selective catalytic reduction including a catalyst chamber that contains a catalyst for reducing NOX in a gas stream passing therethrough. The system also includes a reactant injector, first and second heat exchangers, and a valve manifold adapted to direct a substantially continuous gas stream through the heat exchangers and catalyst chamber in such a manner as to flow through the catalyst chamber in the same flow direction during each cycle of the system. The invention also provides a process of regenerative selective catalytic reduction wherein the gas stream through the catalyst chamber flows in the same flow direction during each cycle of the process.Type: GrantFiled: July 19, 2010Date of Patent: February 28, 2012Assignee: Babcock Power Environmental Inc.Inventors: John R. Harold, James D. Dougherty
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Patent number: 8108073Abstract: A method for controlling dosage of a reagent in a selective catalytic reduction (SCR) system includes the step of providing the system with a plurality of reagent injection nozzles, each nozzle being configured and adapted to be independently calibrated during an SCR reaction when the system is in operation. The method further includes determining an influence coefficient for each injection nozzle for a catalyst independently of the other injection nozzles, and optimizing the flow of reagent from each injection nozzle to minimize a sum of deviation across a surface of the catalyst. A system performs selective catalytic reduction (SCR) and a machine readable medium contains program instructions to controlling dosage of a reagent in a selective catalytic reduction (SCR) system.Type: GrantFiled: July 13, 2011Date of Patent: January 31, 2012Assignee: Babcock Power Environmental Inc.Inventors: Rajaram Jambhekar, Robert Lisauskas, William Medeiros, Clayton Erickson
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Publication number: 20110266304Abstract: A method for controlling dosage of a reagent in a selective catalytic reduction (SCR) system includes the step of providing the system with a plurality of reagent injection nozzles, each nozzle being configured and adapted to be independently calibrated during an SCR reaction when the system is in operation. The method further includes determining an influence coefficient for each injection nozzle for a catalyst independently of the other injection nozzles, and optimizing the flow of reagent from each injection nozzle to minimize a sum of deviation across a surface of the catalyst. A system performs selective catalytic reduction (SCR) and a machine readable medium contains program instructions to controlling dosage of a reagent in a selective catalytic reduction (SCR) system.Type: ApplicationFiled: July 13, 2011Publication date: November 3, 2011Applicant: Babcock Power Environmental Inc.Inventors: Rajaram Jambhekar, Robert Lisauskas, William Medeiros, Clayton Erickson
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Patent number: 8017100Abstract: The invention provides a system for converting urea into reactants useful for removing NOX from industrial emissions. The system includes a urea inlet, a steam inlet, and a reactor in fluid communication with the urea inlet and the steam inlet. The reactor is configured and adapted to inject urea from the urea inlet into a steam flow from the steam inlet to convert the urea into at least one reactant for NOX reduction within a substantially gaseous mixture. The invention also provides a method of converting urea into reactants for reducing NOX out of industrial emissions. The method includes injecting urea into a steam flow to convert the urea into at least one reactant for NOX reduction within a substantially gaseous mixture.Type: GrantFiled: September 28, 2009Date of Patent: September 13, 2011Assignee: Babcock Power Environmental Inc.Inventors: Calvin E. Phelps, Sr., Clayton A. Erickson, Rajaram Jambhekar, John R. Harold
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Patent number: 8010236Abstract: A method for controlling dosage of a reagent in a selective catalytic reduction (SCR) system includes the step of providing the system with a plurality of reagent injection nozzles, each nozzle being configured and adapted to be independently calibrated during an SCR reaction when the system is in operation. The method further includes determining an influence coefficient for each injection nozzle for a catalyst independently of the other injection nozzles, and optimizing the flow of reagent from each injection nozzle to minimize a sum of deviation across a surface of the catalyst. A system performs selective catalytic reduction (SCR) and a machine readable medium contains program instructions to controlling dosage of a reagent in a selective catalytic reduction (SCR) system.Type: GrantFiled: October 30, 2007Date of Patent: August 30, 2011Assignee: Babcock Power Environmental Inc.Inventors: Rajaram Jambhekar, Robert Lisauskas, William Medeiros, Clayton Erickson
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Patent number: 7931881Abstract: An air pollution control system includes an emission treatment system configured to receive flue gas, to reduce at least one pollutant therefrom, and to output emission treated flue gas. A first air heater in fluid communication with the emission treatment system includes a heat exchanger for heating forced air introduced thereto above a base temperature and thereby cooling emission treated flue gas from the emission treatment system to a stack discharge temperature. A second air heater in fluid communication with the first air heater to receive heated forced air therefrom includes a heat exchanger for heating forced air introduced thereto to a preheat temperature for combustion in a boiler and thereby cooling flue gas introduced from a boiler to the second air heater to an emission treatment temperature. The second air heater is in fluid communication with the emission treatment system to introduce cooled flue gas thereto.Type: GrantFiled: September 25, 2009Date of Patent: April 26, 2011Assignee: Babcock Power Environmental Inc.Inventors: Richard F. Abrams, Mark R. Lewis, Jeffrey Penterson
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Publication number: 20110076215Abstract: An air pollution control system includes an emission treatment system configured to receive flue gas, to reduce at least one pollutant therefrom, and to output emission treated flue gas. A first air heater in fluid communication with the emission treatment system includes a heat exchanger for heating forced air introduced thereto above a base temperature and thereby cooling emission treated flue gas from the emission treatment system to a stack discharge temperature. A second air heater in fluid communication with the first air heater to receive heated forced air therefrom includes a heat exchanger for heating forced air introduced thereto to a preheat temperature for combustion in a boiler and thereby cooling flue gas introduced from a boiler to the second air heater to an emission treatment temperature. The second air heater is in fluid communication with the emission treatment system to introduce cooled flue gas thereto.Type: ApplicationFiled: September 25, 2009Publication date: March 31, 2011Applicant: Babcock Power Environmental Inc.Inventors: Richard F. Abrams, Mark Lewis, Jeffrey Penterson
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Patent number: 7758831Abstract: Regenerative selective catalytic reduction (RSCR) systems and processes are provided whereby NOx and CO levels in gases are reduced by mixing the gas with a reactant and then introducing the gas into an RSCR apparatus for treatment that entails heating the gas, causing the gas to undergo one or more catalytic reactions, and then directing the gas through a heat transfer area, to which the gas provides heat for use in connection with successive cycles of the RSCR process.Type: GrantFiled: January 16, 2009Date of Patent: July 20, 2010Assignee: Babcock Power Environmental Inc.Inventors: Richard F. Abrams, John Robert Harold
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Patent number: 7682586Abstract: This invention relates generally to the treatment of NOx in combustion flue gas. In certain embodiments, the invention relates to the use of a regenerative heat exchanger (RHE) to convert urea to ammonia in a side stream of flue gas. Ammonia and/or other urea decomposition products exit the heat exchanger, are mixed with the rest of the flue gas, and enter a selective catalytic reduction (SCR) unit for reduction of NOx in the flue gas. The use of an RHE significantly improves the thermal efficiency of the overall process. More particularly, in certain embodiments, the regenerative heat exchanger is a dual chamber RHE.Type: GrantFiled: August 22, 2007Date of Patent: March 23, 2010Assignee: Babcock Power Environmental, Inc.Inventors: John R. Harold, Clayton A. Erickson
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Publication number: 20090130011Abstract: Regenerative selective catalytic reduction (RSCR) systems and processes are provided whereby NOx and CO levels in gases are reduced by mixing the gas with a reactant and then introducing the gas into an RSCR apparatus for treatment that entails heating the gas, causing the gas to undergo one or more catalytic reactions, and then directing the gas through a heat transfer area, to which the gas provides heat for use in connection with successive cycles of the RSCR process.Type: ApplicationFiled: January 16, 2009Publication date: May 21, 2009Applicant: Babcock Power Environmental Inc.Inventors: Richard F. Abrams, John Robert Harold
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Patent number: 7494625Abstract: Regenerative selective catalytic reduction (RSCR) systems and process are provided whereby NOx levels in gases are reduced by mixing the gas with a reactant and then introducing the gas into an RSCR apparatus for treatment that entails heating the gas, causing the gas to undergo one or more catalytic reactions, and then directing the gas through a heat transfer area, to which the gas provides heat for use in connection with successive cycles of the RSCR process.Type: GrantFiled: November 12, 2007Date of Patent: February 24, 2009Assignee: Babcock Power Environmental Inc.Inventor: Richard F. Abrams