Means Directing Main Flame Or Combustion Products For Afterburning Patents (Class 110/211)
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Patent number: 11530818Abstract: A convection outdoor or indoor gas heater is provided, the heater comprising: a top; a first wall; a combustion chamber which includes a vent cap with a plurality of vents, the vent cap proximate to the top, the combustion chamber housed within the first wall, spaced apart from the first wall to define a first interstitial passageway, the first interstitial passageway in fluid communication with the plurality of vents; a gas burner assembly which is housed in the combustion chamber; a second wall spaced apart from the first wall to define a second interstitial passageway, the second interstitial passageway in fluid communication with the first interstitial passageway; a base which supports the first wall, the second wall and the combustion chamber; a combustion air inlet in fluid communication with the combustion chamber; an ambient air inlet in fluid communication with the second interstitial passageway; and an outlet in fluid communication with the first interstitial passageway.Type: GrantFiled: April 7, 2022Date of Patent: December 20, 2022Inventors: Walter Wardrop, Nicholas Barber
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Patent number: 11499715Abstract: Methods and systems for oxidizing gas are provided. An example regenerative oxidizer is provided that includes a combustion chamber to heat gas present in the combustion chamber. The regenerative oxidizer also includes a first heat exchange media bed and a second heat exchange media bed. Each of the first heat exchange media bed and the second heat exchange media bed are in fluid communication with the combustion chamber. The regenerative oxidizer further includes two burners disposed within the combustion chamber to provide a total heat input to the gas present in the combustion chamber. At least one of the two burners is independently adjustable based on the airflow direction.Type: GrantFiled: December 10, 2019Date of Patent: November 15, 2022Assignee: DUSTEX, LLCInventor: James T. Cash
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Patent number: 11486644Abstract: A microprocessor-based controller for pellet burners is disclosed that provides a level of safety and reliability to any pellet burner by implementing a feed forward control scheme using sensor detected information in a formula to determine proper processing results, utilizing feedback for proper combustion, such that temperature is effectively controlled, thereby greatly reducing the chance of a fire or an explosion.Type: GrantFiled: December 2, 2020Date of Patent: November 1, 2022Inventors: Richard Salcedo, Albert Salcedo
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Patent number: 11143400Abstract: An environmentally friendly combustion chamber for stable combustion of biomass gasification combustible gas. The combustion chamber is divided into a first stage cavity body (45) and a second stage cavity body (48) by a honeycomb-shaped heat storage body (46). A combustion pipe (41) is connected to a biomass gas inlet and a primary air distribution pipe (54), the combustion pipe (41) is connected to the first stage cavity body (45), and an ignition gun (42) and a thermocouple T1 are arranged on the first stage cavity body (45). A secondary air distribution pipe (47), opposite the honeycomb-shaped heat storage body (46), and a thermocouple T2 are arranged within the second stage cavity body (48), and the second stage cavity body (48) is connected to an outlet high temperature flue gas pipe (51).Type: GrantFiled: August 28, 2018Date of Patent: October 12, 2021Assignee: NANJING FORESTRY UNIVERSITYInventors: Yimeng Zhang, Jianbin Zhou, Huanhuan Ma
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Patent number: 10883052Abstract: A biochar kiln is disclosed. An example of the biochar kiln includes a kiln body having a sidewall, a floor attached to the sidewall, and a removable lid. The example biochar kiln also includes a plurality of semi-independent combustion cells. The example biochar kiln also includes an outside vent pipe loading to a center of the semi-independent combustion cells to provide combustion air.Type: GrantFiled: July 5, 2019Date of Patent: January 5, 2021Assignee: BIOCHAR NOW, LLCInventors: Mikel Olander, Perry Pierce, II, William T. Beierwaltes, James G. Gaspard, II
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Patent number: 10845120Abstract: The present disclosure relates to environmentally-clean thermal drying systems and methods. In accordance with one aspect, a method for thermal drying includes receiving a grease-related waste, burning the grease-related waste in a furnace to generate heat energy, receiving a bio-waste in an indirect dryer at an adjustable feed rate, drying the bio-waste in the indirect dryer using at least some of the heat energy, and metering the bio-waste into the indirect dryer at the adjustable feed rate. The adjustable feed rate is adjusted based on a percentage of solids of the bio-waste before entering the indirect dryer and a temperature within the indirect dryer, where the indirect dryer and the adjustable feed rate are coordinated to achieve a predetermined percentage of solids in a dried bio-waste exiting the indirect dryer.Type: GrantFiled: March 1, 2018Date of Patent: November 24, 2020Inventor: Steve Macchio
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Patent number: 10731863Abstract: An apparatus and method for the combustion of solid fuel are provided. The apparatus includes a combustion chamber with a floor, a side opening, an airflow disk located above the side opening, and secondary air inlets located above the airflow disk. The apparatus and method can efficiently combust solid fuels with low emission of particulate matter and harmful gases, continuous feeding of fuel during combustion, and the production of a spiral flame.Type: GrantFiled: August 21, 2017Date of Patent: August 4, 2020Assignee: Prakti Pte. Ltd.Inventors: Jiddu Alexander Broersma, Mouhsine Serrar
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Patent number: 10712000Abstract: An ash discharge system has a conveyor device which transports clinker ash out of a region that is below a furnace bottom of a boiler furnace; and a separation device provided at a passage of the clinker ash from the furnace bottom to the conveyor device, the separation device including a separator which permits the clinker ash with a predetermined size or less to pass through the separator, and inhibits a large-mass clinker from passing through the separator, the large-mass clinker being the clinker ash with a size larger than the predetermined size.Type: GrantFiled: December 2, 2016Date of Patent: July 14, 2020Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yasutaka Ozeki, Yoshihiko Takemura, Tomoyuki Suzuki, Kei Takakura, Hiroshi Ito, Keiichi Mashio, Hiroshi Aoyagi, Takeshi Kawana, Akira Yamashita, Ryutaro Okada, Keita Tsunemori
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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
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Patent number: 10156354Abstract: A circulating fluidized bed boiler is disclosed.Type: GrantFiled: October 27, 2011Date of Patent: December 18, 2018Assignee: Institute of Engineering Thermophysics, Chinese Academy of SciencesInventors: Qinggang Lv, Yunkai Sun, Guoliang Song, Dongyu Wang, Shaolin Bao, Ming Gao, Shiyuan Li
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Patent number: 9964003Abstract: The invention pertains to a power plant including a gas turbine, a heat recovery boiler arrangement with at least a boiler inlet, and an outlet side with a first exit connected to a stack and a second exit connected to a flue gas recirculation, which connects the second exit to the compressor inlet of the gas turbine. The heat recovery boiler arrangement includes a first boiler flue gas path from the boiler inlet to the first boiler exit, and a separate second boiler flue gas path from the boiler inlet to the second boiler exit. Additionally, a supplementary firing and a subsequent catalytic NOx converter are arranged in the first boiler flue gas path. Besides the power plant a method to operate such a power plant is an object of the invention.Type: GrantFiled: January 7, 2015Date of Patent: May 8, 2018Assignee: ANSALDO ENERGIA IP UK LIMITEDInventors: Eribert Benz, Klaus Döbbeling, Michael Hoevel
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Patent number: 9851100Abstract: In apparatus and method for waste treatment by pyrolysis, treated waste is flushed through a grid (18) to trap recyclable material in the pyrolysis chamber (24). Pyrolysis is carried out at a temperature of from 400-700° C. and off-gases are dissolved in a solution in scrubber (13) for disposal in a water course. Water is introduced into the chamber as superheated steam via pipes (5) so as both to flush away treated material and clean the chamber. Recyclable waste is separated from non-recyclable by treating non-recyclable waste by pyrolysis, and flushing treated non-recyclable waste away through liquid exhaust (8). Apparatus is made as a modular, free-standing unit and comprises plugs for connection to an electricity supply, to a water supply, and to a sewerage system (16) and has a chamber with a volume in the range 0.01-0.5 m3.Type: GrantFiled: October 28, 2015Date of Patent: December 26, 2017Assignee: PYROPURE LIMITEDInventors: Howard Morgan Clarke, Michael Benjamin Elder
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Patent number: 8820249Abstract: A burner having a secondary air regulator is provided. The secondary air regulator has an end plate having a bored hole penetrating in an axial direction and for forming a cylindrical space with peripheral surface opened in a space with the furnace core side surface of the wind box, a rotary damper having a bored hole penetrating in an axial direction and being capable to open or close the hole on the end plate by rotating in a peripheral direction, a sliding damper for surrounding the cylindrical space and being slidable in an axial direction, air vanes installed at a predetermined distance along circumference of the cylindrical space and for giving swirling to the secondary air, first driving means for rotating the rotary sliding damper, and second driving means for sliding the sliding damper.Type: GrantFiled: September 23, 2013Date of Patent: September 2, 2014Assignee: IHI CorporationInventors: Masato Tamura, Shinji Watanabe
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Publication number: 20140182492Abstract: A method for optimizing the burnout of exhaust gases of an incinerator includes introducing a solid material via an inlet into a combustion chamber defining a primary combustion space, combusting the solid material in the primary combustion space, in the form of a combustion bed conveyed over a combustion grate, with admission of primary air, discharging the combusted solid material from the primary combustion space via an outlet arranged opposite the inlet in the conveying direction, combusting the primary combustion gases released during the combustion of the solid material, with admission of secondary air, in a secondary combustion chamber defining a secondary combustion space and arranged downstream of the combustion chamber in the flow direction of the combustion gases, and homogenizing the exhaust gases containing the primary combustion gases in a mixing zone by means of a fluid introduced via a nozzle before entry into the secondary combustion space.Type: ApplicationFiled: March 28, 2012Publication date: July 3, 2014Applicant: HITACHI ZOSEN INOVA AGInventor: Maurice Henri Waldner
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Patent number: 8726819Abstract: A burner is arranged axially of a burner throat on a furnace wall and includes a nozzle body housed in a wind box and with a secondary air adjuster on a leading end of the nozzle body. The adjuster includes an end plate for defining together with a near-furnace side surface of the wind box a cylindrical space opened in an outer circumference thereof, a slide damper axially slidable for surrounding the cylindrical space, air vanes arranged at predetermined intervals and circumferentially of the cylindrical space for swirling a secondary air and drive means and for slide movement of the slide damper.Type: GrantFiled: March 27, 2009Date of Patent: May 20, 2014Assignee: IHI CorporationInventors: Masato Tamura, Shinji Watanabe
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Publication number: 20140083478Abstract: [Problem] To provide a combustion device of high combustion efficiency in which additional charging of combustion material containing solids is also possible, and an electric power-generating device using same. [Solution] The combustion method that burns combustion material inside a combustion device comprises: a process of charging the combustion material in the combustion chamber of the combustion device; a process of igniting and burning said combustion material; a process of supplying air or combustion-aiding gas (called “air, etc.” below) to the flame resulting from the combustion of said combustion material from outside of the flame; a process of secondary combustion of the combustion material by said air, etc.; and a process of smoke exhaustion; and in particular, comprises a process of additionally charging combustion material that at least contains solids into said combustion chamber during combustion of the combustion material.Type: ApplicationFiled: October 26, 2011Publication date: March 27, 2014Applicant: HOKKAIDO TOKUSHUSHIRYOU KABUSHIKIKAISHAInventor: Kazuhiro Onose
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Patent number: 8646394Abstract: A burner 15 where a secondary air regulator 36 is provided on a forward end of a nozzle main unit 16 to be installed along the central axis of a burner throat 13 being installed on a furnace wall 12 and to be accommodated in a wind box 14, wherein the secondary air regulator has an end plate 37 having a bored hole 38 penetrating in an axial direction and for forming a cylindrical space 48 with peripheral surface opened in a space with the furnace core side surface of the wind box, a rotary damper 42 having a bored hole 45 penetrating in an axial direction and being capable to open or close the hole on the end plate by rotating in a peripheral direction, a sliding damper 52 for surrounding the cylindrical space and being slidable in an axial direction, air vanes 46 and 47 installed at a predetermined distance along circumference of the cylindrical space and for giving swirling to the secondary air 34, first driving means 54, 56 and 44 for rotating the rotary sliding damper, and second driving means 53 and 55 fType: GrantFiled: May 25, 2010Date of Patent: February 11, 2014Assignee: IHI CorporationInventors: Masato Tamura, Shinji Watanabe
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Patent number: 8646441Abstract: The invention relates to a fume box having a separation partition (16) in the upper portion thereof that comprises a removable catalyst block (17) offset relative to the inlet (10) and the outlet (8), and an intake passage that can be blocked by at least one insulating block. Deflectors slow down the gases and fumes and protect the catalyst block against falling soot and particle. The invention is particularly intended for manufacturers of domestic combustion heating appliances, in particular those using wood.Type: GrantFiled: December 17, 2009Date of Patent: February 11, 2014Inventors: Frederic Haas, Fabien Ozil, Gwennaelle Trouve, Valerie Tschamber
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Publication number: 20130255550Abstract: A method and apparatus for treatment of unburnts in a flue stream 9 of a chemical looping combustion system. Unburnts present in the flue stream 9 are treated after CO2 is removed from the flue stream in a gas processing unit 13. As shown in FIG. 2, oxidation of the unburnts occurs primarily in an air reactor 2 in the presence of air 1, allowing the system to maintain CO2 capture effectiveness and removing the need for creation of enriched or pure oxygen 11.Type: ApplicationFiled: March 30, 2012Publication date: October 3, 2013Applicant: Alstom Power, Inc.Inventors: Marc Ajhar, Jörgen Grubbstrom
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Publication number: 20130232947Abstract: Described herein are embodiments of systems and methods for oxidizing gases. In some embodiments, a reaction chamber is configured to receive a fuel gas and maintain the gas at a temperature within the reaction chamber that is above an autoignition temperature of the gas. The reaction chamber may also be configured to maintain a reaction temperature within the reaction chamber below a flameout temperature. In some embodiments, heat and product gases from the oxidation process can be used, for example, to drive a turbine, reciprocating engine, and injected back into the reaction chamber.Type: ApplicationFiled: March 9, 2012Publication date: September 12, 2013Applicant: FLEXENERGY, INC.Inventors: Jeffrey ARMSTRONG, Richard MARTIN, Douglas HAMRIN
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Patent number: 8505471Abstract: A burning equipment for improving burning efficiency with a simple structure. The burning equipment includes a burning chamber having a top plate section and a bottom plate section; a first burn-promoting plate extending downward from the top plate section until the lower end reaches a prescribed height from the bottom plate section, dividing the burning chamber into a primary burning chamber and a secondary burning chamber, and having a plurality of through-holes; and an air outlet being provided to the secondary burning chamber. The air outlet is provided to the top plate section. A second burn-promoting plate extends downward from the top plate section, in the secondary burning chamber, until the lower end reaches a prescribed height from the bottom plate section. It divides an opening of the air outlet and also has a plurality of through-holes.Type: GrantFiled: August 9, 2011Date of Patent: August 13, 2013Assignee: Moki Seisakusho Co., Ltd.Inventor: Kunitoyo Mogi
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Patent number: 8230795Abstract: The invention relates to a circulating fluidized bed device provided with an oxygen-fired furnace (1), a separator (2) for separating gas and solid particles, a return circuit for returning solids to the furnace (3), and an outlet duct (4) leaving the separator and conveying gases to a heat-recovery boiler, the device being characterized in that it includes injector means for injecting combustible) gas into the outlet from the separator 2), said combustible gas being propelled by recycled carbon dioxide into the residual vortex created at the outlet from the separator, so as to ensure intimate mixing takes place in the downstream duct (4) with the combustion flue gases, thereby reducing the oxygen content of said flue gases by residual combustion.Type: GrantFiled: June 14, 2006Date of Patent: July 31, 2012Inventors: Jean-Xavier Morin, Corinne Beal, Silvestre Suraniti
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Patent number: 8186286Abstract: A bio-mass fueled boiler operating at delivered efficiencies in excess of 90%. Pre-heated, pressurized primary combustion air is supplied to a primary burn chamber via horizontal and vertical orifice containing conduits. Exhaust gases are directed past a reflective secondary burner supplying pre-heated, pressurized secondary combustion air into a secondary burn/ash collection chamber. Exhaust gases are directed from the secondary burn chamber via exhaust conduits having axial and cross-sectional shapes and wall geometries that promote internal turbulence and heat transfer. One or more gas/oil fired burners are fitted to or between the primary and secondary combustion chambers. Several operating modes are provided via associated blowers, air baffles, liquid and gas fuel conduits, pumps and sundry stove sensors and servos coupled to microprocessor control circuitry.Type: GrantFiled: June 7, 2011Date of Patent: May 29, 2012Assignee: Central Boiler, Inc.Inventors: Dennis Brazier, Mark J. Reese, Thomas Pittman, Benjamin A. Reese
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Patent number: 8161959Abstract: A wood burning furnace providing, in sequential connection, an air box, a fire box with a wood storage box/primary combustion chamber and a secondary combustion chamber separated by an ash grate, a heat exchanger, an exhaust manifold, and a smoke stack. The air box has an input port attached to an intake air blower. The air box also has two dampers, a thermostatically controlled first damper providing controlled access to an updraft exhaust pipe connected to the smoke stack. The second damper provides controlled access to the wood storage box/primary combustion chamber.Type: GrantFiled: January 12, 2010Date of Patent: April 24, 2012Inventor: Paul D. O'Reilly
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Patent number: 8034283Abstract: A rotary hearth furnace includes an exhaust gas eductor. The exhaust gas eductor includes a compartment-defining portion and an exhaust duct. The compartment-defining portion is provided on part of a ceiling of the rotary hearth furnace in an exhaust gas discharge region, and an exhaust duct is connected to the compartment-defining portion. The lower surface of the compartment-defining portion lies higher than the lower surface of the other portion of the ceiling. The compartment-defining portion defines a compartment where the exhaust gas stays. The exhaust duct can include a cooling medium injection nozzle. The furnace increases fuel efficiency by completely burning combustible components remaining in exhaust gas generated in the rotary hearth furnace so as to use the combustible components efficiently for the heating and reduction reaction in the rotary hearth furnace, without problems in producing reduced iron.Type: GrantFiled: October 31, 2006Date of Patent: October 11, 2011Assignee: Kobe Steel, Ltd.Inventors: Masahiko Tetsumoto, Sumito Hashimoto, Koji Tokuda
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Patent number: 7967008Abstract: A fireplace system having a fireplace cavity and a secondary combustion assembly disposed adjacent to a rear wall of the fireplace cavity. The secondary combustion assembly includes a plurality of combustion chambers configured to facilitate secondary combustion. A plurality of inlets are disposed in the rear wall of the fireplace cavity. One or more of the plurality of inlets are configured to provide fluid communication between the fireplace cavity and a respective one of the plurality of combustion chambers. An exhaust gas collection chamber is in fluid communication with at least the secondary combustion assembly. The exhaust gas collection chamber includes a vent configured to release exhaust gas into a chimney. An ambient air bypass aperture is disposed in a top baffle of the fireplace cavity. The ambient air bypass aperture is configured to divert at least a portion of ambient air entering the fireplace cavity into the exhaust gas collection chamber.Type: GrantFiled: August 27, 2008Date of Patent: June 28, 2011Assignee: Incendia IP, LLCInventors: Robert W. Ferguson, Derik K. Andors
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Publication number: 20110131990Abstract: A combustion plant, comprising: a combustion chamber (1) for combustion of a mass of fuel; a postcombustion device (2) for thermodestruction of the incondensable gases generated by combustion in the chamber (1); a pipe (9) for conveying the combustion fumes from said chamber (1) to said postcombustor (2); a supply (21) of oxygen-enriched air to said chamber (1) and/or to said postcombustor (2); and a device (4) for abatement of the carbon dioxide contained in the combustion fumes that are to reach the postcombustor.Type: ApplicationFiled: July 28, 2009Publication date: June 9, 2011Inventor: Michele Cataldo
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Publication number: 20110120355Abstract: To suppress the generation of clinker so as to prevent the generation of a burning trouble, ceramic particles 30 are covered over a porous plate 4 to form a fire bed 3. Woody pellets 31 are scattered on the fire bed and combustion air is ejected from the lower side of the porous plate so as to burn the pellets. At the time of discharging ash generated by the burning to a secondary combustion space on the downstream side together with an air current of the combustion air or combustion gas, the ceramic particle layers and the woody pellet layer are stirred by a stirring section 21, 22 to thereby break clinker of the combustion ash formed in the fire bed, whereby the growth of the clinker is suppressed and the generation of a burning trouble is prevented.Type: ApplicationFiled: July 22, 2009Publication date: May 26, 2011Applicant: YAZAKI CORPORATIONInventors: Shinji Tongu, Muneo Iwauchi
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Publication number: 20110061576Abstract: A four-way valve for use in a regenerative thermal oxidizer (RTO) assembly for alternating between a first cycle with a gas flowing in a first direction and a second cycle with a gas flowing in a second direction. A partition divides the interior of the housing of the valve into an input zone and an output zone. A pivot shaft rotatable about an axis is disposed in the interior of the housing, and a pair of opposing dampers extend radially outwardly on opposite sides of the pivot shaft. A plurality of ducts are disposed in the housing. Each duct engages one of the input and output apertures and extends into one of the input and output zones for engaging the dampers to restrict the flow of gas during the first and second cycles.Type: ApplicationFiled: September 14, 2010Publication date: March 17, 2011Inventors: Richard Greco, Paul Stefanic
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Patent number: 7833010Abstract: The present invention provides a system and method for injecting natural gas in an RTO. The RTO may be, for example, a known type that has a rotary distributor, a center section divided into pie-shaped segments above the rotary distributor, a heat exchanger section above the center section, and a combustion chamber above the heat exchanger. According to an aspect of the invention, the system introduces gas into segments of the center section in a sequenced manner via cycling on/off control valves. In a particular embodiment, the natural gas is injected at a specific location of a respective segment within the center section that is past the rotary distributor seals and directly under the bottom of the heat exchanger bed. According to the injection sequence, the injection of natural gas into the segment commences when the segment begins to receive inlet waste gas streams, and injection ceases before the flow through the sector changes or stops.Type: GrantFiled: October 28, 2005Date of Patent: November 16, 2010Assignee: Eisenmann CorporationInventors: Robin J. Baker, Bradley L. Ginger
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Patent number: 7798077Abstract: A pyrolysis oven configured for vertical conveyance of material for incineration. The oven makes use of gravity and multiple plates to control the movement of material through the oven chamber. The plates and oven interior are heated in a low oxygen, pressurized environment to effect the decomposition of material as it freefalls down the chamber and makes contact with heated plates. The configuration and angle of declination of plates determines the freefall rate and retention time within the incinerating environment. The decomposition produces char and gas resultants, each of which are carried off through separate exits configured in the oven. The oven may be used as part of a waste management system in connection with a thermal oxidation chamber for the treatment of volatile organic compound gases that are a by-product of the pyrolytic process.Type: GrantFiled: March 16, 2007Date of Patent: September 21, 2010Assignee: Simeken, Inc.Inventors: Michael W. Gehring, William Sweet
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Publication number: 20100037806Abstract: A combustion chamber (10) for burning solid fuels having a high volatiles content has a hollow body (11) with a cylindrical wall section (12) and a top section (13) located at end (14) of the cylindrical wall section (12). The hollow body (11) has a primary air inlet (20), a fuel inlet (23) and four volatiles outlets (25) (one shown), mounted therein. Each volatiles outlet (25) has a plurality of apertures (26) of differing sizes arranged in a plate (27). In use, the burning volatiles exit the apertures (26) in a turbulent flow resulting in efficient combustion of the volatiles. Additionally, a heat transferring surface (33) on a water jacket (32) is shaped around the combustion chamber (10) so as to define a channel (34) there between. This arrangement results in an efficient transfer of heat from the turbulent flow of volatiles, which is forced to circulate around the channel (34).Type: ApplicationFiled: February 14, 2008Publication date: February 18, 2010Inventors: Francis Donal Duignan, Michael Patrick O'Halloran
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Patent number: 7621973Abstract: Methods and systems for a gasifier having a partial moderator bypass are provided. The gasifier includes a partial oxidation reactor including an inlet and an outlet and a primary reaction zone extending therebetween, the partial oxidation reactor configured to direct a flow of products of partial oxidation including fuel gases, gaseous byproducts of partial oxidation, and unburned carbon, and a secondary reaction chamber coupled in flow communication with the partial oxidation reactor, the secondary reaction chamber is configured to mix a flow of moderator with the flow of gaseous byproducts of partial oxidation and unburned carbon such that a concentration of fuel gases is increased.Type: GrantFiled: December 15, 2005Date of Patent: November 24, 2009Assignee: General Electric CompanyInventor: Paul Steven Wallace
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Patent number: 7279655Abstract: Inductively coupled plasma (ICP) reforming converts carbonaceous compounds into a fuel for use in generating electrical power. Energy rich hydrocarbon fuels, such as coal, marine diesel, oils, and hydrocarbon wastes are employed as a feedstock for the ICP, which transforms the feedstock into a fuel that can be used by fuel cells and gas turbines for the production of electricity. The overall efficiency of an ICP-based electrical power system can be increased by providing partial oxidation within the reaction vessel. The partial oxidation conditions consume a small amount of the reformed fuel gas, thereby liberating sufficient thermal energy to reduce the electrical power requirements of the ICP to maintain desired reactor temperatures, and providing an increase in the overall net electrical power production. The integrated power production system can also adjust to meet an increased requirement for process heat and steam by balancing the effect of partial oxidation.Type: GrantFiled: June 10, 2004Date of Patent: October 9, 2007Assignee: Plasmet CorporationInventors: Andreas Blutke, John Vavruska, Mark Henderson, Robert Ferguson
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Patent number: 7146916Abstract: An inclined hearth combustor which generally includes a primary combustion chamber having a plurality of stepped hearths, a secondary combustion chamber in communication with the primary combustion chamber and a boiler having an inlet in communication with the secondary combustion chamber. The secondary combustion chamber includes a refractory-lined cyclone separator for removing fly ash from combustion gases exiting the primary combustion chamber and the boiler inlet is surrounded by the cyclone separator. The primary combustion chamber may further include an ash transfer ram movably disposed between two stepped hearths, wherein the ash transfer ram includes a top layer of refractory material extending rearwardly from a leading edge thereof. The ash transfer ram may further include a plurality of V-shaped wheels attached to a bottom surface thereof, a replaceable wear plate disposed on a side surface thereof and/or a wiper blade fixed on a forward face thereof.Type: GrantFiled: May 12, 2005Date of Patent: December 12, 2006Assignee: eco/Technologies, LLCInventors: E. Larry Beaumont, Edward P. Champagne, Joseph A. Giardina, Chester L. Halek, Joseph W. McCarthy, Kevin J. O'Rourke, E. Scott Porter, Mark N. Rice, Kevin G. Rousseau
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Patent number: 6962118Abstract: An incinerator capable of fully preventing dioxins from being released, and has high fuel economy with less fuel consumption. The basic constitution of the incinerator is such that entire gas volume including unburned gas generated in a first combustion chamber (A) is temporarily collected in a gas collecting chamber (B), and the entire gas volume including unburned gas is introduced from the gas collecting chamber (B) into a second combustion chamber (C), while complete combustion is achieved by burning only the gas in the second combustion chamber (C).Type: GrantFiled: September 21, 2000Date of Patent: November 8, 2005Assignee: S. Mac Co., Ltd.Inventor: Masanobu Shimono
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Patent number: 6952997Abstract: A process for incinerating combustible materials including the steps of: delivering combustible material and inlet gases to a primary combustion chamber, the inlet gases having an oxygen content of at least 50 vol %; burning the combustible material with the oxygen of the inlet gases in the primary combustion chamber producing flue gases and solid particulates as thermal decomposition products of the burnt combustible material; passing the flue gases and particulates to a secondary combustion chamber where further combustion occurs; cooling the flue gases exiting the secondary combustion chamber; returning a portion of the cooled flue gases to at least one of the combustion chambers where the cooled gases moderate the temperature in the at least one chamber; and passing the remaining portion of cooled flue gases on to a flue gas purification system where pollutants in the flue gases and particulates are substantially converted to benign compounds or removed entirely before the flue gases are emitted into theType: GrantFiled: June 24, 2002Date of Patent: October 11, 2005Assignee: Pure Fire Technologies Ltd.Inventors: Yoram Shimrony, Zachary Bachmutzky
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Patent number: 6758149Abstract: This invention provides a refuse incinerator capable of extinguishing smoke and odor of exhaust gas emitted from, combustion of the refuse just after incineration of the refuse is started. Exhaust gas outlets are provided in a furnace lid of the incineration furnace, an exhaust gas chamber is provided such that the furnace lid is used as part of a bottom wall thereof and an exhaust gas introduction pipe is provided to communicate between the exhaust gas chamber and a combustion chamber. Exhaust gas emitted into the exhaust gas chamber is introduced into the combustion chamber and burnt so as to extinguish the smoke and odor. Because the combustion chamber reaches high temperatures just after the incineration of the refuse is started, the smoke and odor of the exhaust gas are extinguished just after the incineration of the refuse is started.Type: GrantFiled: May 30, 2003Date of Patent: July 6, 2004Assignees: Meito Corporation, MCR Co., Ltd.Inventors: Masatoshi Oiwa, Hideo Hirano, Satoshi Furuta
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Patent number: 6715431Abstract: The present invention relates to a multifunctional disposal apparatus for performing disposal by incineration, desiccation, fusion, degradation, ash melting and others on an object to be disposed such as raw refuse, general garbage, sludge, expanded polystyrene and others produced from a manufacturing plant, a service providing facility, a wholesale market, a general firm, a general store, a general house and others. [Structure] In a multifunctional disposal apparatus comprising: a dry combustion furnace; a kiln furnace; a first smoke feeding portion; a second smoke feeding portion; a smoke combustion portion; a dust filter portion; a second smoke feeding portion; an air heating portion; and a cooling tank portion, the present invention has such structure as that a flow of air is generated in one direction from the cooling tank to the second smoke feeding portion to form a vacuum.Type: GrantFiled: November 15, 2001Date of Patent: April 6, 2004Inventor: Takashi Maejima
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Patent number: 6655303Abstract: A furnace consists of at least one wall-mounted burner tilted downward for feeding air-fuel mixture and of a prism-shaped ash hopper. Slopes of the walls of lower combustion chamber region define the slotted mouth of ash hopper. The bottom airflow device is located below the ash hopper mouth the wall opposite to the airflow nozzle of the bottom airflow device has a concave form. In accordance with said invention the bottom airflow device spans along the entire width of the ash hopper mouth. The concave wall in its upper region meets the ash hopper mouth and an imaginary plane being a continuation of said concave wall crosses the opposite slopes of the wall of ash hopper in its middle region. The axis of bottom airflow nozzle passes along the lower region of said concave wall and is directed to form a 0-to-45 degree angle between said axis and lower region of said concave wall. The concave wall may be tilted relative to horizon at the angle of 20-45 degrees.Type: GrantFiled: March 18, 2002Date of Patent: December 2, 2003Assignee: PolytechenergoInventors: Felix Zalmanovich Finker, Igor Borisovich Kubyshkin, Yuriy Pavlovich Bakhtinov
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Patent number: 6589315Abstract: In order to regenerate the heat exchanger material located in the various segments of a housing section (2) of a regenerative post-combustion device (1), fresh air is fed via the flushing air connection (11) into the combustion chamber (8) of this post-combustion device (1), is heated there by a burner (9), and is fed to the rotary distributor (5) via a segment of the heat exchanger material. Heated air which, when passing through the heat exchanger material has picked up contaminants deposited thereon is fed to the inlet or outlet connection (4, 10) of the post-combustion device (1) via the rotary distributor (5) and, from there, is introduced once again into the combustion chamber (8). The rotary distributor (5) of the thermal post-combustion device (1) stops during this process which is continued until the heat exchanger material is heated to a temperature at which the contaminants absorbed by the heat exchanger material are released and combusted in the combustion chamber (8).Type: GrantFiled: December 10, 2001Date of Patent: July 8, 2003Assignee: Eisenmann Maschinenbau KGInventor: Walter Pötzl
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Patent number: 6502520Abstract: An incineration and melting furnace has a furnace main body that is filled with a conductive heat generation body (for example, graphite). Radioactive combustible materials in contact with the conductive heat generation body are burnt and the radiaoactive incombustible materials are melted. The resultant exhaust gases and the molten products flow downwardly in the conductive heat generation body filled region and flow out of a molten product discharging port. Noxious gases such as dioxins contained in the exhaust gases are thermally decomposed into a non-toxic state in a high temperature portion of the conductive heat generation region.Type: GrantFiled: July 13, 2000Date of Patent: January 7, 2003Assignee: Hitachi, Ltd.Inventors: Takashi Nishi, Hideo Hashida, Toshiaki Matsuo, Takeyuki Kondo, Masami Matsuda, Kiyotaka Ueda
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Patent number: 6457424Abstract: The present invention concerns a cremation system for corpses located in coffins. The system comprises a combustion chamber in whose wall is disposed at least one burner to which auxiliary energy can be supplied, a line for discharging flue gas from the combustion chamber, further lines for recirculating some of the flue gas branching off from the discharging line, and a mixer for mixing oxygen, up to at lest 90% pure with some of the recirculating flue gas. The mixture is then fed to the burners. The system is designed to be a mobile unit with two interconnected modules.Type: GrantFiled: March 16, 2000Date of Patent: October 1, 2002Assignee: Messer Griesheim GmbHInventor: Herbert März
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Patent number: 6453829Abstract: An incinerator device includes an incinerator for burning the garbage to generate a smoke, the smoke has a portion sent back to and retreated by the incinerator, and the other portion sent to and retreated by a furnace. The furnace may energize a steam boiler to actuate an electric generator and to generate electricity. A filtering device includes a serpentine conduit for receiving the smoke from the furnace, and disposed in a casing for heating the water in the casing and for supplying the heated water for family use or for use in swimming pool or the like.Type: GrantFiled: October 1, 2001Date of Patent: September 24, 2002Inventors: Wu Chin Tsai, Sin Hua Chen
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Patent number: 6439135Abstract: A municipal waste gasification system comprises a plurality of primary gasification chambers for receiving municipal waste, a means for operating the municipal waste gasification system so that one or more of the primary gasification chambers may be idle while the other primary gasification chambers are operating to produce an effluent by an oxygen-starved process, a means for heating the municipal waste under oxygen-starved conditions in the primary gasification chambers in order to gasify the municipal waste and produce the effluent, and at least one mixing chamber positioned to receive the effluent produced by the primary gasification chambers with an effluent pathway extending through each mixing chamber.Type: GrantFiled: November 25, 1997Date of Patent: August 27, 2002Assignee: International Environmental Technologies, Inc.Inventor: G. Michael Pope
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Patent number: 6431095Abstract: The method is applicable to a combustion system of the circulating fluidized bed type which system includes a hearth and a cyclone, and operates using fuel that is inserted into the bottom of the hearth, where a reducing atmosphere is created and where the fuel undergoes pyrolysis with separation into two phases, namely a solid phase made up of grains of coke, and a gaseous phase containing volatile matter. Provision is made for a primary air injection, secondary air injections, and a late air injection to be performed at different levels. The late air injected between the top of the hearth and the inlet of the cyclone is used to increase the efficiency with which the cyclone collects the particles that reach the top of the hearth unburnt, and thus to increase the combustion efficiency of the system. The system includes air injection means making it possible to implement the method.Type: GrantFiled: December 13, 2000Date of Patent: August 13, 2002Assignee: ABB Alstom Power CombustionInventors: François Malaubier, Patrick Duche
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Patent number: 6422159Abstract: An incinerator has a combustion vessel, a base trap and an afterburner. The combustion vessel has a combustion chamber, an exhaust leading from the chamber, an air intake leading to the chamber, and a gas intake leading to the chamber. Fresh air is mixed with burning propane gas to elevate the temperature to incinerate waste with little ash. Household waste burns in the chamber generating flue gas that is moved from the chamber to the base trap where it is cooled. The cooled flue gas is moved from the base trap through a filter to the afterburner where it is oxygenated and burned prior to release to the atmosphere.Type: GrantFiled: May 14, 2001Date of Patent: July 23, 2002Inventor: W. C. Hunter
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Patent number: 6418864Abstract: An incineration process and an incinerator using heat generated from combustion to bake and sublimate waste to produce gas as for burning waste is designed to use heat generated from the gas as burning chamber in the baking process and to allow waste to emit inflammable gas to be used as fuel in the gas burning chamber without using any other kind of fuel. The baked waste will be burned until it becomes charcoal in the burning chamber while its ash will be continuously removed and more waste continuously fed into the burning chamber. With this process, high temperature, low pollution, and budget savings will result.Type: GrantFiled: November 3, 2000Date of Patent: July 16, 2002Inventors: Manop Piyasil, Somjit Piyasil
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Patent number: 6363868Abstract: Various smoke and combustible gas combustors (200, 300) are disclosed, and also disclosed are systems (100, 200) combining gas combustor with inventive burner. Such a burner (100 or 100′) provides combustion of a particulate fuel such as sawdust, and many types of varying moisture content biomass fuels such as poultry litter. The combustors and burners exhibit a high turndown ratio [‘TDR”].Type: GrantFiled: August 16, 2000Date of Patent: April 2, 2002Assignee: Independant Stave Co.Inventors: John J. Boswell, Dale R. Eichmeyer
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Patent number: 6352040Abstract: A mobile armored incinerator apparatus on a trailer which can be driven to a site to burn explosive materials safely to eliminate noxious particulates and liquids. A primary combustion chamber has a rectangular shape with an internal telescoping loading cart. A secondary combustion chamber having a cylindrical shape is connected to the primary combustion chamber by a dust and as ash separator unit or duct which has baffles and air jets for separating ash particles from the exhaust exiting from the first chamber. The secondary combustion chamber then completes the combustion of the exhaust gases. The hot parts of the apparatus are made touchable with an aluminum sheeting shell.Type: GrantFiled: November 22, 2000Date of Patent: March 5, 2002Inventors: Randall P. Voorhees, Joseph E. Voorhees