Feed Control Patents (Class 110/186)
  • Patent number: 11242989
    Abstract: Disclosed herein is a combustion apparatus which comprises a chamber having a apertured rotatable tubular auger mounted between end walls of the chamber to convey particulate material from the region of the chamber proxi-mate the feed inlet to the combustion gas outlet and a blower connected to the opposite end of the tubular auger and configured to blow gas into the bore of the auger and out through the apertures into the chamber.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: February 8, 2022
    Assignee: Harris Multi Jet Burner Ltd
    Inventors: Michael Harris, Michael Harris, Jr., Glenn Harris
  • Patent number: 11187407
    Abstract: To further reduce the NOx emission, the invention provides a mixing device (10) for a burner (16) having reduced NOx production, comprising a centrally arranged first mixing unit (18) for producing a first fuel-air mixture for a primary flame zone (120), wherein the first mixing unit (18) has at least one first fuel nozzle (38) and a baffle plate (40), a second mixing unit (20) for producing a second fuel-air mixture for a secondary flame zone (122), which encloses the primary flame zone (120), wherein the second mixing unit (20) has multiple second fuel nozzles (70), characterized by a sealing air producing unit (24) for producing a sealing air flow in a sealing air zone, which encloses the primary flame zone (120) of the first mixing unit (18) arranged downstream of the baffle plate (40), wherein the second mixing unit (20) is designed to deliver the second fuel-air mixture into the secondary flame zone (122), which encloses the sealing air zone (126), and wherein the second mixing unit (20) is arranged aro
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: November 30, 2021
    Assignee: MAX WEISHAUPT GMBH
    Inventors: Frank Braig, Hubert Gaub, Stefan Mack, Florian Wohnhas
  • Patent number: 11149944
    Abstract: The disclosure relates to a burner for burning combustible material in the form of a comminuted wood product, especially fine material, with (a) a combustible material feed for supplying the combustible material, (b) a screw conveyor for conveying the combustible material, (c) a combustion zone, wherein the screw conveyor is arranged to convey the combustible material (18) from the combustible material feed (20) to the combustion zone, (d) an air feed for supplying air to the combustion zone, and (e) a burner mouth for leading combustion gases out of the combustion zone. According to the disclosure, a compacting zone is provided, which is configured behind the combustible material feed and in front of the combustion zone in the direction of material flow (M) of the combustible material, wherein an auger of the screw conveyor and the compacting zone are preferably designed to compress the combustible material in the compacting zone.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: October 19, 2021
    Assignee: SWISS KRONO TEC AG
    Inventor: Hartmut Lemke
  • Patent number: 10486082
    Abstract: A condensate neutralizer system for treating condensate of a condensate generating device, the condensate neutralizer system including a container having an inlet and an outlet, the inlet is configured to receive condensate from the condensate generating device, the container is configured to contain a condensate neutralizing material useful for treating the condensate and the outlet is configured to drain condensate treated with the condensate neutralizing material; a controller; and a pH meter functionally connected to said controller, the pH meter is configured to take pH measurements of the treated condensate, the measurements are configured to be compared to a fault pattern, wherein the fault pattern is defined by a condition where the pH measurements are lower than a pre-determined pH level and if a fault is determined to exist, a warning is raised or a delivery of replenishment of the condensate neutralizing material is initiated.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: November 26, 2019
    Assignee: Intellihot, Inc.
    Inventors: Sridhar Deivasigamani, Sivaprasad Akasam
  • Patent number: 10378779
    Abstract: Disclosed is a gas furnace for indoor heating. The gas furnace includes a burner to generate high-temperature exhaust gas, an exhaust flow path, a blower to suction indoor air through a recovery flow path, a supply flow path to guide the indoor air to the indoor space after undergoing heat exchange in the exhaust flow path, and a fuel supply unit including a fuel supply line and a fuel discharge line, configured to supply fuel to the burner, and a valve between the fuel supply line and the fuel discharge line. The valve includes a step motor, and a blocking member coupled to a rotating shaft of the step motor and configured to move straight via by driving of the step motor, and an opening degree of the valve between the fuel supply line and the fuel discharge line is adjusted by the straight movement of the blocking member.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: August 13, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Janghee Park, Yongki Jeong, Baikyoung Chung
  • Patent number: 10001277
    Abstract: A method for efficiently conveying impurities in a pressurized fluidized incinerator system is provided. Cleaning gas is supplied to an upper valve, and thereafter, the upper valve is driven so as to communicate an upper discharge device and a tank. The upper discharge device is driven so as to convey the impurities from the dust collector to the tank, and thereafter, the upper discharge device is stopped and the upper valve is driven so as not to communicate the upper discharge device and the tank. Thereafter, the supply of the cleaning gas to the upper valve is stopped.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: June 19, 2018
    Assignees: TSUKISHIMA KIKAI CO., LTD., SANKI ENGINEERING CO., LTD.
    Inventors: Takamitsu Kanno, Kazuyoshi Terakoshi, Takafumi Yamamoto, Kunihiko Koga, Tomokazu Suyama, Isamu Orito
  • Patent number: 9982552
    Abstract: A pressurized incineration facility (100, 200) includes: a pressurized incinerator (1) which incinerates a processing object (P) under a pressure increased by compressed air (A); a turbocharger (5) which produces the compressed air by being rotationally driven by combustion exhaust gas (G) of the pressurized incinerator; and a seal device (5i) which jets seal gas (S) to a rear surface (5a1) of a turbine impeller (5a) of the turbocharger.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: May 29, 2018
    Assignees: TSUKISHIMA KIKAI CO., LTD., SANKI ENGINEERING CO., LTD.
    Inventors: Ken Nakano, Yutaka Hirata, Yuki Asaoka, Kazuyoshi Terakoshi, Toshiki Kobayashi, Takafumi Yamamoto, Takamitsu Kanno, Kunihiko Koga, Tomokazu Suyama
  • Patent number: 9449240
    Abstract: A method of detecting data relating to thermal energy radiated in a scene uses infrared radiation image processing. A sequential plurality of infrared radiation images of the scene are received that consist of at least two sequential series of images simultaneously detected from respective different points of sight (TC1, TC2), arranged in a predetermined geometrical relationship with respect to each other. Each of the images includes a pixel array, each pixel having a value which is representative of a pixel's fraction of the infrared radiation intensity associated with the array of the image. Successive images of the at least two sequential series of images are processed in order to determine a change in at least one thermal parameter that meets predetermined alarm criteria. An event in the environment is detected based on the change determined in the thermal parameter.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: September 20, 2016
    Assignee: A.M. GENERAL CONTRACTOR S.p.A.
    Inventor: Giovanni Pietro Lorenzoni
  • Publication number: 20150064632
    Abstract: A fluid fuel burning device, comprising: an elongated combustion compartment comprising side walls, where distal end is open allowing fluid communication from inside the combustion compartment and out of compartment; an insulation layer arranged on the inner surface of the side walls and/or on an inner surface of the proximal end of the compartment, preventing heat inside the compartment from radiating away from the compartment from the side walls and/or the proximal end, air flow means for providing a current of air, a fuel nozzle for aerification of the fluid fuel inside the combustion compartment, fuel feeding means for feeding fluid fuel to the fuel nozzle, pressure providing means for applying pressure to the fluid fuel fed via the fuel feeding means, and where the insulation layer comprises a heat absorbent layer that is of a temperature retentive material and radiating heat from the absorbent layer into the combustion compartment.
    Type: Application
    Filed: March 27, 2013
    Publication date: March 5, 2015
    Applicant: PURETEQ A/S
    Inventor: Dennis Søgaard
  • Patent number: 8970389
    Abstract: A stir alarm device for monitoring a forced air in-bin grain stirring system and alerting an individual when the stirring system malfunctions. The stir alarm device may include a movement device which is movably secured to the stirring system, such that movement of the stirring system causes movement of the movement device. The stir alarm device may further include a detection mechanism for monitoring the movement of the movement device. The stir alarm may also include a signaling device operably attached to the detection mechanism, the signaling device for signaling a malfunction when an amount of movement detected by the movement detection mechanism is below a threshold for a predetermined period of time and may include methods or components to control the operation of the stir machine and/or drying system.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: March 3, 2015
    Inventor: Randy Heying
  • Patent number: 8939094
    Abstract: The invention relates to an incineration plant with a furnace, a device for feeding back incineration residues into the furnace, a device for measuring at least one parameter of the incineration, and devices for controlling the incineration. Moreover, the invention relates to a method for controlling an incineration plant.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: January 27, 2015
    Assignee: Martin GmbH fuer Umwelt—und Energietechnik
    Inventors: Johannes Martin, Oliver Gohlke
  • Patent number: 8911230
    Abstract: In a burner and method for the operation of such a burner which is provided with first fuel and air supply means for FLOX® operation and second fuel and air supply means for operation with flame combustion, a control unit is provided for controlling fuel and air supply means in such a manner that, aided by flame combustion operation, the temperature required for FLOX® operation is rapidly achieved and FLOX® operation can be maintained at least in the region directly in front of the burner so as to provide for assisted FLOX® operation of the burner already before the conditions for pure FLOX® operation are established.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: December 16, 2014
    Assignee: WS Waermeprozesstechnik, GmbH
    Inventors: Joachim A. Wünning, Joachim G. Wünning
  • Publication number: 20140322657
    Abstract: A thermal afterburning system and a method for operating such a system are described, in which method or system a burner gas is fed in a conventional manner to a burner heating the combustion space of a combustion chamber, and exhaust air with a pollutant load is fed to the combustion space of the combustion chamber. The clean air produced inside the combustion space during the combustion processes is discharged. At the same time the carbon monoxide content of said air is measured. The supply of burner gas to the burner is regulated in such a manner that a predetermined target value for the carbon monoxide content is maintained. In this manner, the temperature in the combustion space is kept only sufficiently high as is required to achieve the desired purity of the clean gas given the respective pollutant load of the exhaust air.
    Type: Application
    Filed: September 6, 2012
    Publication date: October 30, 2014
    Applicant: EISENMANN AG
    Inventor: Apostolos Katefidis
  • Publication number: 20140318427
    Abstract: The present invention relates to methods and systems for controlling a combustion reaction and the products thereof. One embodiment includes a combustion control system having an oxygenation stream substantially comprising oxygen and CO2 and having an oxygen to CO2 ratio, then mixing the oxygenation stream with a combustion fuel stream and combusting in a combustor to generate a combustion products stream having a temperature and a composition detected by a temperature sensor and an oxygen analyzer, respectively, the data from which are used to control the flow and composition of the oxygenation and combustion fuel streams. The system may also include a gas turbine with an expander and having a load and a load controller in a feedback arrangement.
    Type: Application
    Filed: July 8, 2014
    Publication date: October 30, 2014
    Inventors: Franklin F. Mittricker, Loren K. Starcher, Chad C. Rasmussen, Richard A. Huntington, Frank Hershkowitz
  • Patent number: 8733255
    Abstract: A conveying means for hot material, including at least one conveyor belt and at least one housing at least partially surrounding the at least one conveyor belt, wherein at least one deflecting means for deflecting a gas flow flowing longitudinally with respect to the at least one conveyor belt towards the at least one conveyor belt is arranged in or on the housing, and wherein the gas flow can be deflected by the at least one deflecting means over at least 25% of a length of the at least one conveyor belt.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: May 27, 2014
    Assignee: Clyde Bergemann Drycon GmbH
    Inventors: Rafael Moreno Rueda, Jeremy Phillip Kirsch
  • Publication number: 20140130723
    Abstract: Coal-fired power station with controller for air-fuel ratio in combustion of ground coal, with pneumatic conveying of ground coal to burners of power station. An electrode (10) with average radius rm with 0.1 mm?rm?1.2 mm arranged in channel carrying air in flow direction of air upstream of sensors (11) of correlation measurement device (12) at distance l with 1× unobstructed width of flow cross-section of the channel carrying the air<l<10× unobstructed width of the flow cross-section of the channel carrying the air in the region of the sensors (11). A counter electrode (13, 25) electrically operative relative to electrode (10) is arranged in upstream of sensors (11), and electrode (10) and counter electrode (13, 25) are connected with different poles of a high-voltage source (9) configured for providing a voltage U of 12 kV?U?20 kV.
    Type: Application
    Filed: July 11, 2012
    Publication date: May 15, 2014
    Applicant: Promecon Prozess undMesstechnik Conrads GmbH
    Inventors: Hans Georg Conrads, Alexander Halm, Martin Bohm
  • Patent number: 8701573
    Abstract: A two stage refuse gasification combustion system for processing refuse is disclosed. The system may contain features such as an advancer, a first and second gasifier, a drier, a gas regulator, and a post combustor. Additionally, methods for regulating gas and advancing refuse through a two stage refuse gasification combustion system are disclosed.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: April 22, 2014
    Assignee: Convanta Energy Corporation
    Inventors: Ron Broglio, Hanwei Zhang, Robert Lees Barker, Stephen Paul Goff
  • Patent number: 8679441
    Abstract: The invention relates to a method for controlling a fume treatment center (FTC) (23), scrubbing the baking fumes from a rotary baking furnace (1), in which the fumes are drawn in through at least one suction manifold (11) of the baking furnace (1) and collected in a duct (20, 20?) that conveys said fumes to the fume treatment center (23). The fume treatment center includes a tower (24) which sprays water into the fumes in order to cool same and a least one reactor (25) for the physico-chemical neutralization of the fumes, comprising contact with a reagent powder, such as alumina, followed by filtering (36) of the loaded reagent and the fume dust and recycling in the reactor (25) of at least one fraction of the filtered reagent and mixing of the same with fresh reagent.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: March 25, 2014
    Assignees: Solios Environnement, Solios Carbone
    Inventors: Pierre Mahieu, Thierry Malard
  • Patent number: 8667912
    Abstract: In a burner for highly caking coal in which a solid fuel channel that is attached penetrating through a surrounding wall of a gasifier for gasifying a highly caking solid fuel that has been pulverized into particles and that supplies the solid fuel into the gasifier by gas flow transportation, and a gasifying agent channel that supplies a gasifying agent into the gasifier are provided, a blockage detection unit that detects a blockage situation of the solid fuel channel is provided, and a process for reducing the temperature of the solid fuel is performed when the blockage detection unit detects a predetermined blockage situation.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: March 11, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Yoshinori Koyama, Takeshi Aruga, Hiromi Ishii
  • Patent number: 8662884
    Abstract: An apparatus of controlling oxygen supply for a boiler having wind boxes 2a and 2b arranged on left and right of a boiler body 1 is configured to control supply balance of oxygen by adjusting oxygen supply opening degrees of the left and right oxygen distribution dampers 15a and 15b in accordance with a oxygen supply flow rate and left and right actually measured oxygen concentrations when controlling the oxygen supply amounts and to control the exhaust gas flow rates by correcting an exhaust gas flow rate set value corresponding to a boiler load demand in accordance with an oxygen concentration set value corresponding to a boiler load demand, left and right actually measured exhaust gas flow rates and left and right actually measured oxygen concentrations and adjusting left and right exhaust gas introduction opening degrees of the left and right exhaust gas introduction dampers 8a and 8b when controlling the exhaust gas flow rates.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: March 4, 2014
    Assignees: IHI Corporation, Electric Power Development Co., Ltd.
    Inventors: Toshihiko Yamada, Terutoshi Uchida, Masami Sato
  • Patent number: 8656846
    Abstract: A method and an apparatus for continuous real time heating value/coal flow balancing of coal from a coal feeder to a burner. The apparatus includes a Dual-energy Gamma Attenuation (DGA)/Multi-energy Gamma Attenuation (MGA) device for measuring coal quality at a specific location between the coal silo/bunker and the coal feeder in a coal fired plant in order to control the individual burner stoichiometries according to the measured coal quality. By strategically placing the DGA/MGA device, continuous accurate real-time coal quality information is accomplished for making individual adjustments in order to improve stoichiometry to optimize performance of the system.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: February 25, 2014
    Assignee: Energy Technologies, Inc.
    Inventors: Peter M. Osucha, David K. Swindell, Jack R. Lee
  • Patent number: 8640633
    Abstract: A furnace system for heating a poultry brooder house includes a firebox for burning biomass fuel, and a grate within the firebox for burning the biomass fuel thereon. A distributor assembly may positioned within the firebox and is located directly above the grate. The distributor assembly includes a distributor plate having a plurality of apertures therethrough, and a distributor arm above the distributor plate that is movable relative to the distributor plate to cause biomass fuel supported on the plate to pass through the apertures and fall onto the grate. The furnace system may include a hopper assembly that defines a well for receiving a volume of biomass fuel for delivery to the grate or to the distributor plate.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: February 4, 2014
    Assignee: Wayne/Scott Fetzer Company
    Inventors: Jimmie C. Raley, Jeremy S. Lord, Timothy A. Mann, Gerald D. Stimson, Anthony B. Tranquill, Charles E. Wood, Donald W. Cox
  • Publication number: 20130340658
    Abstract: An exhaust gas recycling control system includes a combination device, having inlet and exhaust ends. The exhaust end is connected to the inlet end by a recycling tube which has a control valve to control an open or closed state. An oxygen sensor mounted detects oxygen content in an exhaust gas and convert the oxygen content detected signal into a voltage signal sent to a controller. The controller controls the control valve to open or close. When the oxygen content of the exhaust gas is higher than a threshold, the control valve opens and a high oxygen content of exhaust gas flows through the recycling tube to the inlet end.
    Type: Application
    Filed: August 10, 2012
    Publication date: December 26, 2013
    Applicant: SHENG ZHUN ENTERPRISE CO., LTD.
    Inventor: Chiu-Huei LIAO
  • Publication number: 20130319298
    Abstract: A fluidized bed gasification furnace includes a control device that identifies a defective fluidization spot of a fluidized bed based on distribution of temperatures detected by a plurality of temperature sensors, temporarily increases an amount of supplied combustion gas to air boxes located below the identified defective fluidization spot, and increases a speed of discharge of noncombustibles and a fluidization medium discharged by an extruder.
    Type: Application
    Filed: March 11, 2011
    Publication date: December 5, 2013
    Inventors: Jun Sato, Toshimasa Shirai, Yoshihisa Saito, Norio Yoshimitsu, Yasunori Terabe
  • Patent number: 8591608
    Abstract: A gasifier includes a combustion zone where a gas is introduced and fuel is combusted and at least one sensor for measuring a predetermined condition in the gasifier. A grate subsystem contains the fuel and includes at least one grinding mechanism. A controller is responsive to the at least one sensor and controls the grinding mechanism by activating the grinding mechanism if the predetermined condition exists to reduce the collection of non-fuel products on the grate subsystem.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: November 26, 2013
    Assignee: MSW Power Corporation
    Inventors: Matthew Young, Steven Anthony, Stephen Armstrong, Steven Chase
  • Publication number: 20130305967
    Abstract: A burner has a combustion head, an ignition device, a fuel delivery/regulating device, a combustion air delivery/regulating device, a safe operation monitoring device, and an electronic control device. The combustion air delivery/regulating device has an air flap mechanism controlled by an air flap actuator, and an inverter for controlling the rotation speed of a blower motor, and has a displacement sensor, linked with the air flap actuator and for controlling the output frequency of the inverter. A program controller of the electronic control device instructs the air flap actuator to control the opening position of the air flap mechanism according to the requirements of a combustion load. The inverter regulates, according to a signal with respect to the opening position of the air flap mechanism and detected by the displacement sensor, the frequency output to the blower motor so as to control the rotation speed of the blower motor.
    Type: Application
    Filed: February 7, 2012
    Publication date: November 21, 2013
    Applicant: HERMEN ENTERPRISES LIMITED
    Inventors: Takming Ma, Nigang Wang, Linquan Dong
  • Patent number: 8584604
    Abstract: Provided are a method and an apparatus for controlling combustion in an oxygen fired boiler which are easily applicable to an existing air fired boiler for easy and stable control of the combustion. Oxygen with a setting amount in accordance with a boiler load demand 35 is supplied to a boiler body 4. Heat absorption amount of the boiler is measured from inlet temperature of feedwater supplied to the boiler body 4 and outlet temperature of steam. Recirculation flow rate of combustion exhaust gas 14a is controlled such that heat absorption amount 41 of the boiler body 4 becomes equal to a targeted heat absorption amount 42 to thereby control oxygen concentration in all gas guided to the boiler body 4.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: November 19, 2013
    Assignees: Electric Power Development Co., Ltd., IHI Corporation
    Inventors: Toshihiko Yamada, Toshiro Fujimori, Shinichi Takano
  • Publication number: 20130302738
    Abstract: Example methods and apparatus to control combustion process systems are disclosed. An example method includes monitoring an actual flow of fuel into a combustion process, calculating a relative heat release value corresponding to the fuel in the combustion process, and determining a fuel demand for the combustion process based on the relative heat release value.
    Type: Application
    Filed: May 13, 2013
    Publication date: November 14, 2013
    Inventors: John Duncan Rennie, Scott Rusheon Pettigrew, Barbara Kerr Hamilton, Andrea Nicole Bishop
  • Publication number: 20130291771
    Abstract: A method and a system for providing thermal energy to a heat demanding equipment, the system comprising a gasification chamber provided with a fire-tube; a temperature sensor monitoring the temperature within the gasification chamber; a controlled-speed dosing unit conveying biomass powder or pellets to the gasification chamber; an air blower injecting a sub-stoichiometric quantity of air within the gasification chamber with the biomass powder or pellets; a syngas burner receiving hot syngas generated by gasification of the biomass powder or pellets within the gasification chamber, from the fire-tube of the gasification chamber, for combustion; and a control unit monitoring the temperature and oxygen conditions in the gasification chamber, and adjusting the dosing unit according to at least one of: i) the temperature within the gasification chamber and ii) thermal heat demand of the heat demanding equipment.
    Type: Application
    Filed: May 1, 2013
    Publication date: November 7, 2013
    Applicant: 7977093 Canada Inc.
    Inventor: MOHAMMED LAKHMIRI
  • Publication number: 20130255546
    Abstract: A wood pellet stove operable to mount to a wall includes a combustion chamber, a combustion chamber door, and a hopper. The combustion chamber has a front, back, and side. The combustion chamber door is in the front of the combustion chamber. The hopper is mounted at the side of the combustion chamber. The bottom of the hopper is below a top of the combustion chamber, and a top of the hopper is substantially coplanar with the top of the combustion chamber. The stove may also include a sight glass or fuel level monitoring system for determining a fuel level of the hopper without opening the hopper.
    Type: Application
    Filed: March 7, 2013
    Publication date: October 3, 2013
    Inventor: August Jones
  • Publication number: 20130213279
    Abstract: An oxygen measuring apparatus (500) includes an inlet pipe (506) having a first end and a second end, an oxygen sensor (511) arranged inside the inlet pipe (506) between the first end of the inlet pipe and the second end of the inlet pipe, the oxygen sensor (511) having a communication medium (515) disposed thereon and extending through the second end of the inlet pipe (506), a filtering medium arranged (505) inside the inlet pipe between the oxygen sensor (511) and the first end of the inlet pipe, a housing (501) arranged against the second end of the inlet pipe, and a sensor control interface (512) arranged within the housing (501) and in communication with the communication medium (515) of the oxygen sensor (511).
    Type: Application
    Filed: October 29, 2010
    Publication date: August 22, 2013
    Applicant: UTC Fire & Security Corporation
    Inventors: Muhidin A. Lelic, Thomas Corti, Oduwa Osagiede, Kenneth M. Swanson, John R. Devine, Mike McCarron, Bryan Mills
  • Patent number: 8501128
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: August 6, 2013
    Inventor: Douglas C. Comrie
  • Patent number: 8489241
    Abstract: An exemplary method is disclosed for controlling on-line the steam output of a waste incineration plant that is fed with waste of varying composition. Process or system quantities (u2, u3, xGC, xLL, w0) can be measured repeatedly, at different times during operation of the plant, and a relation with linear parameters (?i) as coefficients of non-linear expressions (?i) of the process quantities can be established by evaluating the measurements. From this relation, an optimal waste feed rate to obtain a desired steam output ({dot over (M)}steam) can be determined and applied to a waste feed actuator of the waste incineration plant.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: July 16, 2013
    Assignee: ABB Technology AG
    Inventors: Silvia Bardi, Alessandro Astolfi
  • Patent number: 8475160
    Abstract: Clean combustion and equilibration equipment and methods are provided to progressively deliver, combust and equilibrate mixtures of fuel, oxidant and aqueous diluent in a plurality of combustion regions and in one or more equilibration regions to further progress oxidation of products of incomplete combustion, in a manner that sustains combustion while controlling temperatures and residence times sufficiently to reduce CO and NOx emissions to below 25 ppmvd, and preferably to below 3 ppmvd at 15% O2.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: July 2, 2013
    Assignee: Vast Power Portfolio, LLC
    Inventors: Paul Andrew Campbell, David Hagen
  • Patent number: 8453585
    Abstract: A new and unique boiler and method of transition between air and Oxy-combustion in a coal fired combustion process wherein near pure oxygen may be introduced to the boiler furnace in several locations including directly into the flame through the burner and/or directly into the furnace as nearly pure oxygen, and/or into the recycle flue gas streams to the burners, including both primary and secondary streams.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: June 4, 2013
    Assignees: Babcock & Wilcox Power Generation Group, Inc., American Air Liquide, Inc.
    Inventors: Bryan B. Stone, Denny K. McDonald, Allan J. Zadiraka, Rajani K. Varagani
  • Publication number: 20130095436
    Abstract: A burner combustion method is employed in which at least two burners (2) are disposed opposite each other in a furnace (1) so as to cause combustion, the method comprising: cyclically changing at least one of a flow rate of a fuel fluid and a flow rate of an oxidant fluid supplied to the respective burners (2) while cyclically changing a concentration of oxygen in the oxidant fluid thereby cyclically changing an oxygen ratio obtained by dividing a supply oxygen amount by a theoretically required oxygen amount, whereby, the burners (2) are made to cause combustion in a cyclical oscillation state, wherein with respect to the cyclical change in an oscillation state of the burners (2), a phase difference is provided between a cyclical change in an oscillation state of at least one burner (2) and cyclical changes in oscillation states of other burners (2).
    Type: Application
    Filed: June 28, 2011
    Publication date: April 18, 2013
    Applicant: TAIYO NIPPON SANSO CORPORATION
    Inventors: Yasuyuki Yamamoto, Kimio Iino, Yoshiyuki Hagihara, Tomoyuki Haneji
  • Publication number: 20130025512
    Abstract: In one aspect, a fuel oxygenation apparatus includes a fuel oil supply fluidically coupled to the inlet of a positive displacement pump for delivery of the fuel oil to a fuel oil burner. An oxygen supply is fluidically coupled to the inlet of the positive displacement pump. During the suction cycle, a momentary vacuum is created at the pump inlet side drawing oxygen gas into the fuel line where it admixes with the fuel oil supply. Oxygenating the fuel prior to combustion increases efficiency of the burner and reduces undesirable emissions.
    Type: Application
    Filed: July 30, 2012
    Publication date: January 31, 2013
    Applicant: ENERGY EFFICIENCY SOLUTIONS, LLC
    Inventor: Eric T. LaVoie
  • Publication number: 20120291679
    Abstract: The invention relates to a method for real-time, continuous adjustment of a set of thermal combustion chambers (2, 2i) having similar characteristics supplied by the same combustive agent (8) and fuel (9) networks, according to which one of the chambers (2i) is used as a reference chamber, combustion parameters are measured (7) in the fumes output from the reference chamber, and the control parameters of all the chambers (2) are adjusted according to the combustion parameters measured at the output of the reference chamber (2i), in particular according to the ratio of combustive agent to fuel and/or the composition of the combustive agent and/or fuel.
    Type: Application
    Filed: November 26, 2010
    Publication date: November 22, 2012
    Applicant: Five Stein
    Inventor: Patrick Giraud
  • Publication number: 20120270162
    Abstract: A combustion control system, including a first set of sensors for generating sample data including data representing a sequence of detected images of different samples of a fuel made up of solid particles; a fuel analysis module for controlling a processor of a computing device to: (i) determine attributes for one or more predetermined physical characteristics of the particles in each said sample based on the sample data, and (ii) generate an index value for each said sample based on said attributes, said index value representing a level of combustibility of the particles in each said sample; and a combustion control module for controlling a processor of a computing device to adjust one or more parameters for controlling a combustion process based on changes to said index value over time.
    Type: Application
    Filed: September 21, 2010
    Publication date: October 25, 2012
    Applicant: KAILASH & STEFAN PTY LTD
    Inventors: Fredrick Stefan Jarl Dahlhielm, Kailash Nath Sriram
  • Patent number: 8291842
    Abstract: A method controls mass and heat loading of sludge feed into a fluidized bed combustor (FBC) controlled via regulation of a polymer dosage or a sludge feed rate including: continuously monitoring at least one performance characteristic of the FBC; producing an input signal characteristic; analyzing the input signal and determining a first rate of change of the characteristic; generating an output signal based on the first rate of change to control addition of polymer to the FBC; generating a second output signal to control addition of sludge feed to the FBC; and determining a transition point between the addition of polymer and addition of sludge, which transition point is an upper limit of a first rate change to maintain flow so that the value of the characteristic is maintained proximate at the upper limit.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: October 23, 2012
    Assignee: Infilco Degremont, Inc
    Inventors: Ky Dangtran, Robert F. Kelly
  • Publication number: 20120260834
    Abstract: A boiler control system for efficiently controlling the operation of a packaged boiler is provided. The system includes a combustion air control system, a fuel control system, a flue gas sensing system, and a boiler controller. The boiler controller is in operative communication with the combustion air control system, fuel control system, and the flue gas sensing system. Based upon a system demand, the boiler controller controls coarse-level operation of the combustion air control system and the fuel control system. The flue gas sensing system may include an oxygen sensor and a flue gas differential sensor to sense a change in a characteristic of the flue gas. When the flue gas differential sensor senses a change in the flue gas characteristic that meets a flue gas differential setpoint, the boiler controller controls the fine-level operation of the boiler.
    Type: Application
    Filed: June 28, 2012
    Publication date: October 18, 2012
    Inventor: Warren G. Knorr, JR.
  • Publication number: 20120247374
    Abstract: A control sequencing system for a biomass fuel gasification furnace utilizes control vector separation and isolation. The three vector system provides clean operation and fuel efficiency. A wide variety of solid fuel may be used of various fuel values, moisture content, and fuel particle size. The independent control vectors are separated into fan speed, fuel pile level maintenance, and oxygen content maintenance.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 4, 2012
    Inventors: Robert J. Bender, John P. Tomasi, Bradley M. Noviski
  • Patent number: 8226913
    Abstract: Sorbent components containing halogen, calcium, alumina, and silica are used in combination during coal combustion to produce environmental benefits. Sorbents such as calcium bromide are added to the coal ahead of combustion and other components are added into the flame or downstream of the flame, preferably at minimum temperatures to assure complete formation of the refractory structures that result in various advantages of the methods. When used together, the components reduce emissions of elemental and oxidized mercury; increase the level of Hg, As, Pb, and/or Cl in the coal ash; decrease the levels of leachable heavy metals (such as Hg) in the ash, preferably to levels below the detectable limits; and make a highly cementitious ash product.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: July 24, 2012
    Assignee: NOx II, Ltd.
    Inventor: Douglas C. Comrie
  • Publication number: 20120174836
    Abstract: A device for reducing ash adhesion in a boiler, includes: a calculator (9) which, in the case of mixing one or more types of solid fuels, calculates and determines the mixing ratio of the solid fuels so that the resultant solid fuel mixture has a slag viscosity not lower than a reference value at a predetermined atmospheric temperature; and fuel supply amount regulators (3a, 3b) which regulate the amount of the solid fuels to be supplied to the boiler based on the mixing ratio as described above. By using this device, ash adhesion in a boiler can be easily and accurately predicted and, therefore, ash adhesion can be reduced even in the case of using various types of solid fuels including a low-grade coal as fuel.
    Type: Application
    Filed: October 5, 2010
    Publication date: July 12, 2012
    Applicant: Kabushiki Kaisha Kobe Seike Sho (Kobe Steel, Ltd.)
    Inventors: Katsuya Akiyama, Haeyang Pak
  • Publication number: 20120174825
    Abstract: The invention concerns a method for beneficiation of fly ash particles comprising: determining the heat value of the fly ash particles; comparing the determined heat value of the fly ash particles with a minimum heat value K; feeding an inlet of a combustor (5) with a feed material comprising the fly ash particles and, in case the determined heat value is lower than the minimum heat value K, fuel in sufficient quantity to assure that the heat value of the raw material is greater than or equal to the minimum heat value K; supplying an upstream airflow to the combustor (5) so as to carry the feed material in suspension from the inlet to an outlet of the combustor; operating the combustor (5) at a temperature of at least 700° C.; collecting beneficiated fly ash particles from the airflow at the outlet of the combustor (5). The invention also concerns an installation for implementation of the said method.
    Type: Application
    Filed: July 8, 2009
    Publication date: July 12, 2012
    Inventors: Javier Vazquez Favela, Maria Claudia Ramirez Carrero, César Alberto Sosa Blanco, Hugo Bolio Arceo
  • Patent number: 8219247
    Abstract: A method of operating a furnace having process tubes and multiple burners where it is desired to conform the temperatures of the process tubes to selected target temperature criterion. The present method provides a systematic and quantitative approach to determine how to adjust burner flow rates to result in desired tube wall temperatures, for example to minimize the temperature deviation between tube wall temperatures at a predetermined elevation in the furnace.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: July 10, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ali Esmaili, William Robert Licht, Xianming Jimmy Li, Oliver J. Smith, IV
  • Publication number: 20120107751
    Abstract: In order to stably operate a boiler using several kinds of solid fuels including depleted ash as fuels, adhesion of ash is suppressed. A calculator (9) preliminarily collects properties of a solid fuel, such as the content rate of ash and the composition of an ash constituent, as data (8). The calculator (9) uses the mix ratio of solid fuels as a parameter and calculates the composition of an ash constituent of the mixed fuels on the basis of the preliminarily measured composition of the ash constituent of each solid fuel. The calculator (9) determines a reference value of the rate of slug by which the ash deposition ratio is reduced on the basis of the relationship between the preliminarily measured ash deposition ratio and the slag ratio. Further, the calculator (9) calculates the mix ratio of each solid fuel using a thermodynamic equilibrium calculation so as to obtain an ash composition in which the slag ratio is not more than the determined reference value.
    Type: Application
    Filed: July 22, 2010
    Publication date: May 3, 2012
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Katsuya Akiyama, Haeyang Pak
  • Patent number: 8156876
    Abstract: Systems and methods of integrating plasma waste processing are described. An integreted energy generation system provided with a fossil fuel power plant system having a combustion chamber and a plasma waste processing system having an output. The integrated energy generation system also including an integrator for combining the output of thermal energy from the plasma waste processing system with the combustion chamber of the fossil fuel power plant.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: April 17, 2012
    Assignee: Georgia Tech Research Corporation
    Inventors: Michael S. Smith, Kevin C. Caravati, Louis J. Circeo, Robert C. Martin, Jr.
  • Patent number: 8117975
    Abstract: A fossil-fuel-fired system, which includes an emissions-control-agent dispenser, a furnace, an emissions monitor and, optionally, a controller, is disclosed. The emissions-control-agent dispenser provides a prescribed amount of organic-emissions-control agent, such as, for example, an opacity-control agent to the fossil-fuel-fired system. The furnace includes an exhaust communicating with the atmosphere. The emissions monitor is capable of measuring at least one property of the flue-gas communicated through the exhaust to the atmosphere. For example, when an organic-emissions-control agent is an opacity-control agent, the emissions monitor has the capability of at least measuring opacity. When included, the controller communicates with at least the emissions-control-agent dispenser and the emissions monitor.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: February 21, 2012
    Assignee: Evonik Stockhausen, LLC
    Inventors: Gary W. Allen, John T. Joyce, Jr.
  • Publication number: 20110302901
    Abstract: A method of optimizing operation of a furnace to control emission within a system. Each furnace zone inside of the furnace is associated with at least one exhaust zone. A signal indicative of an amount of byproduct exiting the furnace through at least one of the exhaust zones is received from one or more of the sensors. Based on this signal, an offending furnace zone is identified from among the plurality of furnace zones, the offending furnace zone including an oxygen level contributing to the amount of the byproduct. A relative adjustment of at least one of an amount of oxygen being introduced into the offending furnace zone, and an angular orientation of an oxygen injector introducing oxygen into the offending furnace zone relative to a focal region within the furnace can be initiated. The furnace may have structure to perform the method and may be part of a system.
    Type: Application
    Filed: June 9, 2010
    Publication date: December 15, 2011
    Applicant: General Electric Company
    Inventors: Guang Xu, Neil Colin Widmer