Patents Assigned to The Babcock & Wilcox Company
  • 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: 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: 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: 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
  • Patent number: 10124968
    Abstract: A simplified submerged chain conveyor system for handling ash produced by large-scale coal fired boilers. The system incorporates an endless chain conveyor system moving a coal/ash aqueous mixture within a conveyor segment having a hydraulically closed duct. The system is adapted for retrofit applications of existing coal-fired boiler installations. In each embodiment the chain conveyor elevates the aqueous ash solution to dewater the ash. In several embodiments the boiler ash hopper is partially flooded with water and the system moves the ash mixture through a water column to the dewatering section. In one embodiment the ash mixture is not submersed but is subjected to water sprays before reaching the dewatering section. Great flexibility is provided in locating and positioning the conveyor system. One unit may be implemented to provide ash handling for multiple boilers. Embodiments are described operable in continuous or batch mode processes.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: November 13, 2018
    Assignees: THE BABCOCK & WILCOX COMPANY, BABCOCK & WILCOX LOIBL GMBH
    Inventors: Loius A Zotti, Randy Jay Reynolds, Manfred Reinsch, Karl Josef Zeitler, Austin Tyler Little
  • Patent number: 10113536
    Abstract: Methods of arranging and operating a molten salt solar thermal energy system are disclosed. Molten salt flows from a set of cold storage tanks to solar receivers which heat the molten salt to a maximum temperature of about 850° F. The heated molten salt is sent to a set of hot storage tanks. The heated molten salt is then pumped to a steam generation system to produce steam for process and/or power generation. Lower salt temperatures are useful in processes that use lower steam temperatures, such as thermal desalination. Lower salt temperatures and low chloride molten salt reduce the corrosion potential, permitting the use of lower cost alloys for the solar receivers, hot storage tanks, salt pumps, piping and instrumentation and steam generation system. Multiple sets of modular, shop assembled storage tanks are also used to reduce the amount of salt piping, simplify draining, and reduce field assembly and plant cost.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: October 30, 2018
    Assignee: THE BABCOCK & WILCOX COMPANY
    Inventors: David T Wasyluk, Kiplin C Alexander, Kenneth L Santelmann, Jason M Marshall
  • Patent number: 10018356
    Abstract: The present invention relates generally to the generation of steam via the use of a combustion process to produce heat and, in one embodiment, to a device, system and/or method that enables one to control one or more process parameters of a combustion process so as to yield at least one desirable change in at least one downstream parameter. In one embodiment, the present invention is directed to a system and/or method for controlling at least one process parameter of a combustion process so as to yield at least one desirable change in at least one downstream process parameter associated with one or more of a wet flue gas desulfurization (WFGD) unit, a particulate collection device and/or control of additives thereto and/or a nitrogen oxide control device and/or control of additives thereto and/or additives to the system.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 10, 2018
    Assignee: The Babcock & Wilcox Company
    Inventors: Daniel B. Johnson, Shannon R. Brown
  • Patent number: 9989244
    Abstract: A system can quickly cool and de-pressurize a boiler arrangement under non-normal operating conditions such as loss of plant power. A discharge system injects into the furnace a combined stream of steam from a steam discharge system and ambient air, thereby both cooling components of the boiler arrangement and reducing pressure in the steam/water circuit. This reduces or eliminates the additional cost associated with providing extra capacity in a steam drum and/or an independently powered boiler water pump. The system is particularly useful for quickly cooling the U-beams of a circulating fluidized bed boiler during a black plant condition.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: June 5, 2018
    Assignee: The Babcock & Wilcox Company
    Inventors: Mikhail Maryamchik, Michael J Szmania, Donald L Wietzke
  • Patent number: 9939178
    Abstract: A concentrated solar power (CSP) system includes channels arranged to convey a flowing solids medium descending under gravity. The channels form a light-absorbing surface configured to absorb solar flux from a heliostat field. The channels may be independently supported, for example by suspension, and gaps between the channels are sized to accommodate thermal expansion. The light absorbing surface may be sloped so that the inside surfaces of the channels proximate to the light absorbing surface define downward-slanting channel floors, and the flowing solids medium flows along these floors. Baffles may be disposed inside the channels and oriented across the direction of descent of the flowing solids medium. The channels may include wedge-shaped walls forming the light-absorbing surface and defining multiple-reflection light paths for solar flux from the heliostat field incident on the light-absorbing surface.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: April 10, 2018
    Assignee: The Babcock & Wilcox Company
    Inventors: Mikhail Maryamchik, Thomas J Flynn, Shengteng Hu, David L. Kraft, Jason M. Marshall, Bartev B. Sakadjian
  • Patent number: 9933154
    Abstract: The present disclosure relates to a system for producing high pressure steam from low quality feedwater for a designated process. The system includes a first closed loop in fluid communication with a boiler and a heat exchanger assembly. A first fluid flows through the first closed loop, and is of acceptable quality for use in a boiler. Heat from the boiler is transferred to a second loop through the heat exchanger assembly. The second loop includes the low quality feedwater, which is converted to high pressure steam. The high pressure steam produced from the low quality water can be used in the designated process. This reduces corrosion/downtime in the boiler that might otherwise occur if the low quality water was directly heated by the boiler.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: April 3, 2018
    Assignee: The Babcock & Wilcox Company
    Inventors: Donald E Ryan, James S Kulig, Larry A Pierson
  • Patent number: 9920924
    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 steam-cooled circuit includes a steam separator, a primary superheater, and the steam-cooled membrane walls of the upper furnace. During start-up, a diversion path is opened that reduces dry steam flow through the primary superheater and increases dry steam flow through the steam-cooled membrane walls of the upper furnace. This protects the steam-cooled membrane walls from excessive thermal stresses during start-up.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: March 20, 2018
    Assignee: The Babcock & Wilcox Company
    Inventors: Eric L. Wells, Albert J Bennett, Jeremy L. Remus
  • Patent number: 9920955
    Abstract: A solar receiver includes: water jacket panels each having a light-receiving side and a back side with a watertight sealed plenum defined in-between; light apertures passing through the watertight sealed plenums to receive light from the light-receiving sides of the water jacket panels; a heat transfer medium gap defined between the back sides of the water jacket panels and a cylindrical back plate; and light channeling tubes optically coupled with the light apertures and extending into the heat transfer medium gap. In some embodiments ends of the light apertures at the light receiving side of the water jacket panel are welded together to define at least a portion of the light-receiving side. A cylindrical solar receiver may be constructed using a plurality of such water jacket panels arranged with their light-receiving sides facing outward.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: March 20, 2018
    Assignee: The Babcock & Wilcox Company
    Inventor: David T Wasyluk
  • Patent number: 9902615
    Abstract: A chemical-looping system utilizes oxygen-carrier particles to produce syngas from carbonaceous fuels. The system provides a circuitous flow path for the oxygen-carrier particles, which are used to partially oxidize the fuel to produce syngas. The circuitous flow path can proceed through a plurality of unit operations, including a reducer, a conversion reactor, an oxidizer, and a combustor. The conversion reactor is designed to partially oxidize carbonaceous fuel in co-current flow with the oxygen-carrier particles to produce syngas. In embodiments including an oxidizer, the oxidizer is designed to at partially re-oxidize the carrier particles, yielding hydrogen that can be mixed with partially oxidized products from the conversion reactor to adjust syngas quality. The combustor can be used to fully oxidize the carrier particles traveling in a closed loop. Reactions carried out in the combustor are highly exothermic and yield thermal energy that is absorbed by the carrier particles.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: February 27, 2018
    Assignee: The Babcock & Wilcox Company
    Inventors: Tritti Siengchum, Luis G Velazquez-Vargas, Thomas J Flynn, Douglas J DeVault