Patents Assigned to Babcock & Wilcox
-
Patent number: 11752480Abstract: The present invention relates generally to an apparatus for housing a chemical looping process comprising of at least one fluidized-bed combustor reactor, at least one entrained riser, at least one particle separator, optionally at least one particle holding reactor, at least one moving-bed reactor, at least one standpipe, at least one L-valve system for solid flow control and interconnecting sections.Type: GrantFiled: January 28, 2022Date of Patent: September 12, 2023Assignee: Babcock & Wilcox CompanyInventors: Donald C. Housley, Robert T. Cunningham, Thomas J. Flynn, Luis G. Velazquez-Vargas, Jinhua Bao, Jeremy L. Remus, Albert J. Bennett
-
Patent number: 11686470Abstract: A boiler includes a steam drum, an intermediate drum, and a lower drum. Each drum is divided into a clean section and a concentrated section. A channel that is fluidly connected to the clean section also runs down one side of the concentrated section in the intermediate drum and the lower drum. The presence of the channels permits low-quality feedwater tubes and high-quality feedwater tubes to be arranged in parallel rows next to each other.Type: GrantFiled: February 3, 2020Date of Patent: June 27, 2023Assignee: The Babcock & Wilcox CompanyInventors: Melvin J Albrecht, Jason M Marshall, Jonathan B Ford, Jeremy L Remus
-
Patent number: 11674685Abstract: A multi-circulation heat recovery steam generator (HRSG) for steam assisted gravity drainage (SAGD)/Enhanced Oil Recovery (EOR) processes comprises a steam drum internally partitioned to provide a clean side and a dirty side. The clean side downcomer pipe supplies water to one or more generating banks as part of a clean circuit located in a high heat flux zone of the boiler. Boiler water is fed from the clean side of the drum to the dirty side of the drum via natural head differential. Water is then fed through a corresponding downcomer to a dirty generating bank, which is located in a low heat flux zone of the boiler.Type: GrantFiled: May 11, 2021Date of Patent: June 13, 2023Assignee: Babcock & Wilcox Canada Corp.Inventors: Gary R Barker, Dong Chen, Jonathan D Fleming, Colin Malcolm MacKenzie
-
Patent number: 11592175Abstract: An assembly for cleaning a smelt spout includes a cleaning head, a drive rod connected with the cleaning head, and a pneumatic or other drive connected to selectively extend or retract the drive rod. The drive rod may be connected with the cleaning head by a pivotal connection. The cleaning head may be bifurcated. The cleaning head may include a leading edge configured to engage and clean a spout opening from which smelt from a chemical reduction furnace flows to the spout. The assembly may further include a pivot point and, as the drive selectively extends the drive rod, torque about the pivot point produced by the cleaning head and an extending portion of the drive rod rotates the cleaning head downward to engage a smelt spout.Type: GrantFiled: May 27, 2021Date of Patent: February 28, 2023Assignee: The Babcock & Wilcox CompanyInventors: Mikael Eriksson, Simon F Youssef, Joseph Clay
-
Patent number: 11415314Abstract: A boiler includes an upper steam drum, an optional intermediate drum, and a lower drum. Each drum is divided by an internal divider into a clean section and a concentrated section. Downcomers connect the upper steam drum to the lower drum, and tubes are connected to convey a heated steam-water mixture from the lower drum into the upper steam drum (through the optional intermediate drum, if provided). An optional superheater has an input terminal connected to receive steam from the clean section of the upper steam drum. An attemperator may be provided to attemperate superheated steam output from an output terminal of the superheater, and the attemperation fluid may optionally be provided from the concentrated side of the upper steam drum.Type: GrantFiled: June 19, 2019Date of Patent: August 16, 2022Assignee: The Babcock & Wilcox CompanyInventors: Melvin J Albrecht, Jason M Marshall, Jeremy L Remus
-
Patent number: 11303232Abstract: A control system for mechanical braking devices is provided. The control system is designed to selectively slow, stop, and lock in place rotating machinery that is turning at an RPM that may be much greater than zero while helping minimize shock load on the rotating machinery. A fan brake control system is provided which can include: a fan brake; a position sensor; a microcontroller; an actuator; an operator interface; and a fan motor interface.Type: GrantFiled: August 28, 2019Date of Patent: April 12, 2022Assignee: Babcock & Wilcox SPIG, Inc.Inventors: Brian A Lesniak, Michael M Mahler, Thomas R Hendrix, John W Stacks, III, David F Johnston
-
Patent number: 11124718Abstract: Various embodiments of a system for the removal of particulate emissions from an electric generating unit are provided, comprising: a gas producer; a primary particulate collector unit including: a primary collection hopper field each including at least one primary collection hopper, wherein each primary collection hopper includes a primary collection hopper outlet, each primary collection hopper outlet fluidically connected to a particulate discharge duct; a flue duct inlet oriented upstream of the at least one primary collection hopper field; a flue duct outlet oriented downstream of the primary collection hopper field; wherein the gas producer is fluidically connected to the primary particulate collector unit by a flue duct; and a particulate recirculation duct fluidically connected at a first end to the primary collection hopper and/or the particulate discharge duct, and fluidically connected at a second end to the flue duct upstream of the primary particulate collector unit.Type: GrantFiled: February 28, 2018Date of Patent: September 21, 2021Assignee: The Babcock & Wilcox CompanyInventors: Mandar R Gadgil, Laura M McDermitt, John R Cline, Tony F Habib, Prasanna Seshadri
-
Patent number: 11067338Abstract: The present disclosure relations to wind mitigation devices which include a deflector that having an inlet and an outlet. An axial fan is disposed above the outlet of the deflector and includes a shroud. The shroud of the axial fan and the outlet of the deflector are aligned along a common vertical axis. The deflector is adapted to receive an airflow at the inlet and direct the airflow through the outlet in a vertical direction toward the axial fan.Type: GrantFiled: August 29, 2018Date of Patent: July 20, 2021Assignee: The Babcock & Wilcox CompanyInventors: Tony F Habib, Mitchell W Hopkins
-
Patent number: 11022299Abstract: A multi-circulation heat recovery steam generator (HRSG) for steam assisted gravity drainage (SAGD)/Enhanced Oil Recovery (EOR) processes comprises a steam drum internally partitioned to provide a clean side and a dirty side. The clean side downcomer pipe supplies water to one or more generating banks as part of a clean circuit located in a high heat flux zone of the boiler. Boiler water is fed from the clean side of the drum to the dirty side of the drum via natural head differential. Water is then fed through a corresponding downcomer to a dirty generating bank, which is located in a low heat flux zone of the boiler.Type: GrantFiled: November 9, 2016Date of Patent: June 1, 2021Assignee: Babcock & Wilcox Canada Corp.Inventors: Gary R Barker, Dong Chen, Jonathan D Fleming, Colin Malcolm MacKenzie
-
Patent number: 10987626Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for reducing and/or eliminating various liquid discharges from one or more emission control equipment devices (e.g., one or more wet flue gas desulfurization (WFGD) units). In another embodiment, the method and apparatus of the present invention is designed to reduce and/or eliminate the amount of liquid waste that is discharged from a WFGD unit by subjecting the WFGD liquid waste to one or more drying processes, one or more spray dryer (or spray dry) absorber processes, and/or one or more spray dryer (or spray dry) evaporation processes.Type: GrantFiled: May 21, 2015Date of Patent: April 27, 2021Assignee: The Babcock & Wilcox CompanyInventors: Michael Klidas, Joseph Mitchell, III
-
Patent number: 10746401Abstract: The grate includes a number of grate lanes arranged side by side between a left and a right side section, neighbouring lanes being connected by a midsection and including a lane section having a number of pivotal grate shafts carrying grate bars. Each midsection includes an upper relatively narrow housing section arranged between grate bars of neighbouring lanes and a lower relatively broad housing section protruding under grate bars of said lanes. The upper housing section of each midsection encloses bearings for grate shaft ends of neighbouring lanes. At least one midsection includes a drive mechanism for pivoting back and forth neighbouring grate shafts in opposite rotational directions and a synchronising mechanism of at least one lane section. An actuator of said drive mechanism and said synchronising mechanism are located in the lower housing section of said midsection.Type: GrantFiled: July 7, 2016Date of Patent: August 18, 2020Assignee: Babcock & Wilcox Vølund A/SInventor: Hans Bøgh Andersen
-
Patent number: 10653996Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus directed to one or more of: (i) reducing the levels of NOx from one or more types of combustors, furnaces or boilers; (ii) reducing the levels of NOx from one or more types of biomass combustors, furnaces or boilers; or (iii) reducing the levels of NOx from one or more types of fluidized bed biomass combustors, furnaces or boilers. In one embodiment, the method and apparatus of the present invention permit the use of a less complex and/or expensive system to accomplish selective non-catalytic reduction (SNCR) and enable one to achieve DeNOx (NOx reduction) under low load or unit turndown operation for biomass combustion in a bubbling fluidized bed (BFB) boiler.Type: GrantFiled: May 13, 2019Date of Patent: May 19, 2020Assignee: The Babcock & Wilcox CompanyInventors: James F Desellem, Mandar R Gadgil, Laura M McDermitt, Margaret Yeager, Thomas J Flynn
-
Patent number: 10589226Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for reducing and/or eliminating various liquid discharges from one or more emission control equipment devices (e.g., one or more wet flue gas desulfurization (WFGD) units). In another embodiment, the method and apparatus of the present invention is designed to reduce and/or eliminate the amount of liquid waste that is discharged from a WFGD unit by subjecting the WFGD liquid waste to one or more drying processes, one or more spray dryer (or spray dry) absorber processes, and/or one or more spray dryer (or spray dry) evaporation processes.Type: GrantFiled: May 21, 2015Date of Patent: March 17, 2020Assignees: The Babcock & Wilcox Company, GEA Process Engineering A/SInventors: Michael G Klidas, Kevin E. Redinger, Joseph M Mitchell, III, Steven Feeney, Niels Jacobsen, Claus Erik Boilesen
-
Patent number: 10478775Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.Type: GrantFiled: July 19, 2017Date of Patent: November 19, 2019Assignee: The Babcock & Wilcox CompanyInventors: Prasanna Seshadri, Richard DeVault
-
Patent number: 10471384Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for: (i) reducing halogen levels necessary to affect gas-phase mercury control; (ii) reducing or preventing the poisoning and/or contamination of an SCR catalyst; and/or (iii) controlling various emissions. In still another embodiment, the present invention relates to a method and apparatus for: (A) simultaneously reducing halogen levels necessary to affect gas-phase mercury control while achieving a reduction in the emission of mercury; and/or (B) reducing the amount of selenium contained in and/or emitted by one or more pieces of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.).Type: GrantFiled: August 8, 2013Date of Patent: November 12, 2019Assignee: The Babcock & Wilcox CompanyInventors: Mandar R Gadgil, Bryan J Jankura
-
Patent number: 10471386Abstract: The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for capturing, oxidizing, lowering the concentration and/or level of, and/or eliminating mercury present in any flue gas and/or combustion gas stream. In one embodiment, the method and/or apparatus of the present invention is applied to boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices that have connected thereto at least one type of flue gas, or combustion gas, scrubber device (i.e., a wet scrubber or a dry scrubber).Type: GrantFiled: February 10, 2016Date of Patent: November 12, 2019Assignee: The Babcock & Wilcox CompanyInventors: Steven Feeney, Mandar R Gadgil
-
Publication number: 20190301734Abstract: The grate includes a number of grate lanes arranged side by side between a left and a right side section, neighbouring lanes being connected by a midsection and including a lane section having a number of pivotal grate shafts carrying grate bars. Each midsection includes an upper relatively narrow housing section arranged between grate bars of neighbouring lanes and a lower relatively broad housing section protruding under grate bars of said lanes. The upper housing section of each midsection encloses bearings for grate shaft ends of neighbouring lanes. At least one midsection includes a drive mechanism for pivoting back and forth neighbouring grate shafts in opposite rotational directions and a synchronising mechanism of at least one lane section. An actuator of said drive mechanism and said synchronising mechanism are located in the lower housing section of said midsection.Type: ApplicationFiled: July 7, 2016Publication date: October 3, 2019Applicant: Babcock & Wilcox Vølund A/SInventor: Hans BØGH ANDERSEN
-
Patent number: 10429062Abstract: A boiler is disclosed in which the furnace is divided into a lower furnace and an upper furnace. The lower furnace uses water-cooled membrane walls, while the upper furnace uses steam-cooled membrane walls that act as superheating surfaces. A transition section is present between the lower furnace and the upper furnace. The boiler is a high temperature sub-critical natural circulation boiler which is completely top supported. The lower furnace is supported through the transition section by the upper furnace.Type: GrantFiled: April 5, 2016Date of Patent: October 1, 2019Assignee: The Babcock & Wilcox CompanyInventors: Eric L Wells, Roger A Detzel, Albert J Bennett, Steven D Thayer
-
Patent number: 10429061Abstract: Material handling systems for fluids are disclosed herein. The fluid may be a liquid, solution, slurry, or emulsion. The systems receive as inputs the fluid, steam, and water. These feed into a surge tank where additives can be introduced. The steam and water are used to control some physical properties and enable the distribution of the fluid as desired. In particular embodiments, the system is useful for handling materials to be sent to a dual-phase fuel feeder for combustion in a fluidized-bed boiler, the energy being used to generate electricity or in various production processes.Type: GrantFiled: May 22, 2017Date of Patent: October 1, 2019Assignee: The Babcock & Wilcox CompanyInventors: James F DeSellem, Karl M Heil, Steven L Osborne, John A Kulig, Larry A Hiner
-
Patent number: 10415825Abstract: Energy is generated from cellulosic biofuel waste streams, specifically a lignin filter cake and a waste syrup, by combusting these waste products in a fluidized bed combustor under specified conditions. The heat and steam generated can be used to generate electricity and/or in cellulosic biofuel production processes.Type: GrantFiled: May 22, 2017Date of Patent: September 17, 2019Assignee: The Babcock & Wilcox CompanyInventors: James F DeSellem, Thomas J Flynn, Karl M Heil, Eric L Wells