Patents Assigned to The Babcock & Wilcox Company
  • Patent number: 11415314
    Abstract: 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: Grant
    Filed: June 19, 2019
    Date of Patent: August 16, 2022
    Assignee: The Babcock & Wilcox Company
    Inventors: Melvin J Albrecht, Jason M Marshall, Jeremy L Remus
  • Patent number: 11124718
    Abstract: 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: Grant
    Filed: February 28, 2018
    Date of Patent: September 21, 2021
    Assignee: The Babcock & Wilcox Company
    Inventors: Mandar R Gadgil, Laura M McDermitt, John R Cline, Tony F Habib, Prasanna Seshadri
  • Patent number: 11067338
    Abstract: 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: Grant
    Filed: August 29, 2018
    Date of Patent: July 20, 2021
    Assignee: The Babcock & Wilcox Company
    Inventors: Tony F Habib, Mitchell W Hopkins
  • Patent number: 10987626
    Abstract: 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: Grant
    Filed: May 21, 2015
    Date of Patent: April 27, 2021
    Assignee: The Babcock & Wilcox Company
    Inventors: Michael Klidas, Joseph Mitchell, III
  • Patent number: 10653996
    Abstract: 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: Grant
    Filed: May 13, 2019
    Date of Patent: May 19, 2020
    Assignee: The Babcock & Wilcox Company
    Inventors: James F Desellem, Mandar R Gadgil, Laura M McDermitt, Margaret Yeager, Thomas J Flynn
  • Patent number: 10589226
    Abstract: 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: Grant
    Filed: May 21, 2015
    Date of Patent: March 17, 2020
    Assignees: The Babcock & Wilcox Company, GEA Process Engineering A/S
    Inventors: Michael G Klidas, Kevin E. Redinger, Joseph M Mitchell, III, Steven Feeney, Niels Jacobsen, Claus Erik Boilesen
  • Patent number: 10478775
    Abstract: 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: Grant
    Filed: July 19, 2017
    Date of Patent: November 19, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: Prasanna Seshadri, Richard DeVault
  • Patent number: 10471386
    Abstract: 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: Grant
    Filed: February 10, 2016
    Date of Patent: November 12, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: Steven Feeney, Mandar R Gadgil
  • Patent number: 10471384
    Abstract: 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: Grant
    Filed: August 8, 2013
    Date of Patent: November 12, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: Mandar R Gadgil, Bryan J Jankura
  • Patent number: 10429061
    Abstract: 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: Grant
    Filed: May 22, 2017
    Date of Patent: October 1, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: James F DeSellem, Karl M Heil, Steven L Osborne, John A Kulig, Larry A Hiner
  • Patent number: 10429062
    Abstract: 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: Grant
    Filed: April 5, 2016
    Date of Patent: October 1, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: Eric L Wells, Roger A Detzel, Albert J Bennett, Steven D Thayer
  • Patent number: 10415825
    Abstract: 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: Grant
    Filed: May 22, 2017
    Date of Patent: September 17, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: James F DeSellem, Thomas J Flynn, Karl M Heil, Eric L Wells
  • Patent number: 10415819
    Abstract: 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. The upper furnace and the convection pass are also located next to each other, so that they share a common steam-cooled wall. There is no open pass between the furnace and the convection pass.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: September 17, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: Eric L Wells, Roger A Detzel, Albert J Bennett, Steven D Thayer
  • Patent number: 10253972
    Abstract: Transition castings are disclosed which comprise a steam tube and a water tube, which are joined together by membranes. A heat transfer fin extends from the membrane and abuts the water tube. The steam tube bends such that an upper end is on one side of the water tube, and a lower end is on an opposite side of the water tube. The transition castings are used in a transition section of a boiler 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. The transition casting joins the lower furnace and the upper furnace together.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: April 9, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: Eric L Wells, Roger A Detzel, Albert J Bennett, Steven D Thayer, Kevin L Brewster
  • Patent number: 10234169
    Abstract: Transition castings are disclosed which comprise a steam tube, a water tube, and a pass-through tube, which are joined together by membranes. The ends of the tubes on one vertical end are aligned in a plane, while the ends of the tubes on the other vertical end are aligned in alternating planes, or put another way are angled instead of being in a straight line. The transition castings are used in a transition section of a boiler 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. The transition section joins the lower furnace and the upper furnace together.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: March 19, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: Eric L Wells, Roger A Detzel, Albert J Bennett, Steven D Thayer
  • Patent number: 10215399
    Abstract: A small supercritical once-through steam generator (OTSG) includes a radiant section with a furnace coil, and a convection section downstream of the radiant section that includes a superheater which is fluidically connected to the furnace coil. Optionally, the OTSG is devoid of a steam separator. An economizer can also be included downstream of the superheater. Supercritical steam can be generated using the OTSG, for use, among other things, in enhanced oil recovery applications.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 26, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: Michael A Costanzo, James S Bloss
  • Patent number: 10213738
    Abstract: 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 or preventing the poisoning and/or contamination of an SCR catalyst. In still another embodiment, the present invention relates to a method and apparatus for increasing the service life and/or catalytic activity of an SCR catalyst while simultaneously controlling various emissions. In yet another embodiment, the present invention relates to a method and apparatus for controlling, mitigating and/or 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: Grant
    Filed: February 18, 2013
    Date of Patent: February 26, 2019
    Assignee: The Babcock & Wilcox Company
    Inventors: Mandar R Gadgil, Bryan J Jankura, Jeb W Gayheart
  • Patent number: 10208951
    Abstract: A spray dryer absorber (SDA) system used to reduce the concentration of at least one acid compound in a gas utilizes low or no alkali-containing particulate compounds to prevent cementing during operation. The low or no-alkali-containing compounds may be supplied from external sources and/or from a particulate collection device located downstream of the SDA.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: February 19, 2019
    Assignee: THE BABCOCK & WILCOX COMPANY
    Inventor: Mikhail Maryamchik
  • Patent number: 10197267
    Abstract: An apparatus for using a water coil air heater with a single bank economizer. A boiler economizer arrangement includes an economizer bank which has separate hot pass bank and cold pass bank economizer portions in a parallel arrangement, each facing the same flow of hot flue gas. Feedwater enters the cold pass bank economizer where it is heated by the hot flue gas, and then flows to a water coil air heater away from the hot flue gas. The feedwater dissipates heat energy in the water coil air heater which may be used to heat air bound for combustion. The feedwater continues into the hot pass bank economizer portion of the economizer arrangement where it absorbs additional heat from the flue gas. The heated feedwater flows out of the economizer arrangement and may be subject to additional heating by a boiler or other heat exchanger.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: February 5, 2019
    Assignee: THE BABCOCK & WILCOX COMPANY
    Inventors: Jeffrey J. Gries, Larry A Hiner, William R Stirgwolt
  • Patent number: 10144661
    Abstract: 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) and, in particular to a new and useful method and apparatus designed to improve the water supplied to non-calcium-based, aqueous wet SOx scrubbers. In another embodiment, the present invention relates to a system and method for softening water for use in non-calcium-based, aqueous wet SOx scrubbers.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: December 4, 2018
    Assignee: THE BABCOCK & WILCOX COMPANY
    Inventors: William Downs, Paul J Williams