With Control Means Responsive To A Sensed Condition Patents (Class 110/185)
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Patent number: 11873459Abstract: A method of wet coal processing for electrical power generation comprises the providing a stream of a wet coal mix for an electrical power generation system having a boiler, such as metering coal product onto a conveyor; measuring the amount of moisture of the wet coal mix in the stream, such as with a moisture sensor on the conveyor; determining an amount of drying material to be added to the wet coal mix; adding the determined amount of drying material, such as one or more super absorbent polymers, added to the wet coal mix; Milling the treated wet coal mix; Transporting the milled treated wet coal mix to the boiler of the electrical power generation system for combustion. The method may utilize treated coal wash residual product and teaches a process for treating coal wash residual product.Type: GrantFiled: April 19, 2021Date of Patent: January 16, 2024Assignee: MARTLIN DISTRIBUTING, LLCInventor: Michael Gerard Dorsch
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Patent number: 11062893Abstract: Systems and methods for automatic sampling, digestion, and joining a plurality of sample introduction systems of a sample for subsequent analysis by ICP-MS are described.Type: GrantFiled: January 6, 2019Date of Patent: July 13, 2021Assignee: Elemental Scientific, Inc.Inventors: Nathan Saetveit, Michael P. Field, Daniel R. Wiederin, Tyler Yost
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Patent number: 10976050Abstract: A method for preheating a beater mill is provided. The method includes: rotating a beater wheel disposed within the beater mill to facilitate circulation of a gas stream between the beater mill and a furnace fluidly connected to each other via both a pulverized fuel conduit and a flue gas recirculation conduit; generating a burner gas via a burner disposed within the flue gas recirculation conduit such that the burner gas joins and heats the gas stream circulating through the beater mill and the furnace; and adjusting at least one of an air supply and a fuel supply to the burner via a controller based at least in part on one of a temperature of the gas stream at an entrance of the beater mill, a temperature of the gas stream at an exit of the beater mill, and an oxygen level within the beater mill.Type: GrantFiled: April 15, 2020Date of Patent: April 13, 2021Assignee: GENERAL ELECTRIC TECHNOLOGY GMBHInventors: Dragisa Ristic, Rajkumar Daniel, Frank Michael Kluger
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Patent number: 10845352Abstract: A slag volume evaluation method for a molten metal surface includes calculating an approximation curve indicating a correspondence between a thickness of slag and a density parameter in advance by measuring thicknesses of a plurality of pieces of the slag which float on a surface of a molten metal in a container and differ from each other in thickness, and calculating a value of the density parameter which is correlated to a density in a pixel region corresponding to the plurality of pieces of the slag in a captured image of a molten metal surface in the container; and calculating a volume of the slag by calculating and integrating the thickness of the slag for each of pixels constituting the captured image obtained by capturing an image of the molten metal surface which is an evaluation target, according to a value of the density parameter of each of the pixels and the approximation curve.Type: GrantFiled: December 6, 2017Date of Patent: November 24, 2020Assignee: NIPPON STEEL CORPOATIONInventors: Tomoyuki Kusunoki, Takahiro Miyazaki
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Patent number: 10612777Abstract: A plurality of dry distillation furnaces (2a), (2b) are provided for a single combustion furnace (4). When wastes (A) in the dry distillation furnace (2a) are subjected to dry distillation to produce a combustible gas and introduce the combustible gas into the combustion furnace (4) to burn, control is carried out such that a temperature (Tc) in the combustion furnace (4) becomes a first temperature. When the temperature (Tc) in the combustion furnace (4) is the first temperature, the presence of the wastes (A) in the dry distillation furnace (2b) is detected, the wastes (A) in the dry distillation furnace (2b) are ignited to subject the wastes (A) to dry distillation thereby to produce a combustible gas, and the introduction of the combustible gas into the combustion furnace (4) is started.Type: GrantFiled: January 27, 2017Date of Patent: April 7, 2020Assignee: KINSEI SANGYO CO., LTD.Inventor: Masamoto Kaneko
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Patent number: 10288287Abstract: A combustion control system that collects and accumulates, at predetermined intervals, combustion controlling information including at least a signal indicating an operating state of an ignition device, a signal indicating the supplying state of fuel to a pilot burner, a signal indicating the supplying state of fuel to a main burner, a signal indicating the supplying state of air to the main burner, a flame detection signal indicating the strengths of the flames of the burners (the pilot burner and the main burner), and information indicating presence or absence of the flames determined based on the value of the flame detection signal, and displays the combustion controlling information as trend data of combustion control in a graph in such a form that the relationship between time zones of the combustion sequences from the start of a combustion device to normal combustion and the trend data is understandable.Type: GrantFiled: January 27, 2017Date of Patent: May 14, 2019Assignee: Azbil CorporationInventors: Kayo Suzuki, Yuichi Kumazawa, Tomoya Nakata, Takeshi Nishiyama
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Patent number: 10161682Abstract: An integrated sensor system for use in a furnace system including a furnace having at least one burner and two or more zones each differently affected by at least one furnace parameter regulating energy input into the furnace, including a first temperature sensor positioned to measure a first temperature in the furnace system, a second temperature sensor positioned to measure a second temperature in the furnace system; and a controller programmed to receive the first and second measured temperatures, and to adjust operation of a furnace system parameter based on a relationship between the first and second temperatures, thereby differentially regulating energy input into at least two of the zones of the furnace; wherein the relationship between the first and second temperatures is a function of one or more of a difference between the two temperatures, a ratio of the two temperatures, and a weighted average of the two temperatures.Type: GrantFiled: October 9, 2015Date of Patent: December 25, 2018Assignee: Air Products and Chemicals, Inc.Inventors: Michael J. Gallagher, Shailesh Pradeep Gangoli, Aleksandar Georgi Slavejkov, Anup Vasant Sane, Reed Jacob Hendershot
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Patent number: 10052585Abstract: Systems and processes for reducing carbon capture emissions are described. The process involves introducing a radical species into a decarbonized combustion gas. The radical species react with residual amines or unwanted compounds in the decarbonized combustion gas, thus reducing the concentration of residual amines or unwanted compounds in the exhaust gas. The system includes a carbon capture absorber with non-thermal plasma generator configured to provide radical species reducing the concentration of residual amines or unwanted compounds in the exhaust combustion gas.Type: GrantFiled: August 28, 2015Date of Patent: August 21, 2018Assignee: Fluor Technologies CorporationInventors: Satish Reddy, Joseph Yonkoski
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Patent number: 9802151Abstract: The air pollution control system including: a flue gas duct through which flue gas flows; a heat exchanger provided to the flue gas duct; a limestone supply device for reducing SO3 in the flue gas supplies CaCO3 to the flue gas flowing in an upstream of the heat exchanger; an upstream SO3 measurement device measures the SO3 in the flue gas flowing in a stream upper than a position where the limestone supply device supplies the CaCO3; and a control device determines a quantity supplied of the CaCO3 based on a relationship between a quantity of the SO3 measured by the upstream SO3 measurement device and a molar ratio of SO3 to CaCO3 and which supplies the determined quantity supplied of the CaCO3 from the limestone supply device to the flue gas duct.Type: GrantFiled: January 26, 2015Date of Patent: October 31, 2017Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Naoyuki Kamiyama, Seiji Kagawa, Toshihiro Fukuda, Tetsu Ushiku
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Patent number: 9803857Abstract: An embodiment is an emissions reduction system for exhaust gases. The emissions reduction system includes a reaction chamber with one or more parallel flow tubes. Each parallel flow tube includes a heating element to heat exhaust gases to oxidize PICs and other pollutants contained in and/or carried by the exhaust gases. The reaction chamber may also include an adjustable bypass for the exhaust gases to variably bypass the parallel flow tubes. The reaction chamber may further include an oxidizing agent injector to improve the oxidation of the PICs and other pollutants in the reaction chamber. The emissions reduction system of an embodiment may further include a catalyst bed in fluid communication with the reaction chamber to further reduce emissions.Type: GrantFiled: December 23, 2009Date of Patent: October 31, 2017Inventor: Paul E. Tiegs
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Patent number: 9651254Abstract: A method for measuring and controlling flame quality in real-time, the method comprising the steps of: acquiring a plurality of flame images in a first field of view; acquiring a plurality of flame images in a second field of view; processing the acquired plurality of flame images of said first and second fields of view to determine an overall flame quality parameter; and comparing the overall flame quality parameter to a tolerance range. In other aspects, a system for measuring and controlling flame quality in real-time and a non-transitory computer readable medium (CRM) storing instructions configured to cause a computing system to measure and control flame quality in real-time are provided.Type: GrantFiled: October 24, 2014Date of Patent: May 16, 2017Assignee: LumaSense Technologies Holdings, Inc.Inventors: David Ducharme, Kreg Kelley, Peter Hodgins
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Patent number: 9643125Abstract: Systems and processes for reducing carbon capture emissions are described. The process involves introducing a radical species into a decarbonized combustion gas. The radical species react with residual amines or unwanted compounds in the decarbonized combustion gas, thus reducing the concentration of residual amines or unwanted compounds in the exhaust gas. The system includes a carbon capture absorber with non-thermal plasma generator configured to provide radical species reducing the concentration of residual amines or unwanted compounds in the exhaust combustion gas.Type: GrantFiled: March 26, 2013Date of Patent: May 9, 2017Assignee: Fluor Technologies CorporationInventors: Satish Reddy, Joseph Yonkoski
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Patent number: 9254773Abstract: The control of an apparatus within a grain holding device for feeding grain to an unloader conveyor operable for conveying the grain from the holding device, includes sensing a predetermined condition or conditions representative of capacity of the unloader conveyor for receiving grain, and adaptively controlling the apparatus for feeding grain to the unloader conveyor in advantageous varying manners responsive to the conditions, including to delay initiation of feeding until the receiving capacity is increased, and to match the grain feed to the capacity. The automatic control can be overridden, to allow user control of unloader speed, and can be configured to allow cleanout of the unloader conveyor.Type: GrantFiled: May 21, 2009Date of Patent: February 9, 2016Assignee: CNH Industrial America LLCInventors: Herbert M. Farley, Steven C. Young, Kevin W. Ward, Edmund N. Holt, II, Jeffrey D. Frego, Bruce E. Anderson
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Patent number: 9074818Abstract: A method and apparatus to increase the cooling rate of gas used in a batch annealing furnace of cold rolling mills under bypass cooling. The invention makes use of the higher heat transfer capacities of nanocoolants developed by a high-shear mixing of nanoparticles and stabilizers in a basic aqueous medium for cooling heated hydrogen flowing through a heat exchanger during bypass cooling of the batch annealing furnace. The nanofluid is prepared in a nanofluid preparation unit.Type: GrantFiled: April 20, 2009Date of Patent: July 7, 2015Assignee: Tata Steel LimitedInventors: Jayabrata Bhadurt, Deb Roy, Subhrakanti Chakraborty, Shantanu Chakraborty, Sumitesh Das, Debashish Bhattacharjee
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Patent number: 9074280Abstract: A plasma film deposition device includes a film deposition chamber, a plasma generator within the deposition chamber, a plurality of gas carrier boards adjustably mounted to the plasma generator, a gas providing system, and a rotating support bracket. The gas providing system provides working gas and protective gas. The rotating support bracket is assembled within the film deposition chamber, and is aligned with the plasma generator, for holding workpieces in certain orientations. The plasma generator ionizes the working gas into high-temperature plasma, and sprays the high-temperature plasma toward the rotating support bracket to form plasma films on the workpieces. A plasma jet area is defined between the rotating support bracket and the plasma generator, the gas carrier boards eject the protective gas toward the plasma jet area thereby adjusting the shape of the plasma jet area.Type: GrantFiled: June 1, 2012Date of Patent: July 7, 2015Assignee: HON HAI PRECISION INDUSTRY CO., LTD.Inventor: Shao-Kai Pei
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Patent number: 9033705Abstract: A hydrogen vacuum furnace (100) is provided with a process chamber (1) wherein a subject (10) to be heated is stored; a heating chamber (2) wherein a heater lamp (25) is stored; and a crystal board (3) for separating the subject (10) and the heater lamp (25) one from the other. In the hydrogen vacuum furnace (100), the subject (10) is heated by a radiant ray applied from the heater lamp (25). The process chamber (1) and the heating chamber (2) are provided with gas feed ports (11, 21) and exhaust ports (12, 22), respectively, for feeding and exhausting a gas. When the subject (10) is being heated, atmospheric pressure in each chamber is adjusted so that the heating chamber (2) is under positive pressure to the process chamber (1) by feeding or exhausting the gas.Type: GrantFiled: August 6, 2008Date of Patent: May 19, 2015Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, HIRATA CORPORATIONInventors: Masanari Matsuura, Sotaro Oi, Tomoyuki Kubota, Masaya Tsuruta
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Publication number: 20150107496Abstract: The various embodiments herein provide an improved biomass based down draft gasifier for producing electrical energy. The gasifier comprises a reactor with double walled construction having an annular space between outer and inner shells. The annular space houses multiple helical guide vanes welded to the inner shell. The reactor is covered with a top cover assembly. An air inlet manifold is provided for directing the controlled air into the reactor through the air inlet nozzles. An automatic start system is provided for controlling the combustion of inlet fuel done with a spark plug. The gasifier comprises a throat which permits the ashes and charcoal of burnt fuel to drop into the bottom of the reactor. The gas separation holes are provided at the bottom of the reactor to separate the product gas from the charcoal. The product gas is taken out from an output pipe.Type: ApplicationFiled: October 14, 2014Publication date: April 23, 2015Inventor: KRISHNA KUMAR BINDINGNAVALE RANGA
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Patent number: 8997664Abstract: 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 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: GrantFiled: December 21, 2012Date of Patent: April 7, 2015Assignee: Covanta Energy, LLCInventors: Ron Broglio, Hanwei Zhang, Robert Barker, Stephen Goff
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Patent number: 8961170Abstract: A pulverized coal thermal power generation system that significantly reduces the amount of NOx emissions from a boiler and does not require a denitration unit is provided. When a denitration unit is not used, performance to remove mercury from a boiler waste gas is reduced. A waste gas purification system for a pulverized coal boiler, that compensates for this is provided. A pulverized coal boiler having a furnace for burning pulverized coal, burners for supplying pulverized coal and air used for combustion into the furnace so as to burn the pulverized coal in an insufficient air state and after-air ports provided on the downstream side of the burners for supplying air used for perfect combustion characterized in that, an air ratio in the furnace is 1.05 to 1.14, and the residence time of a combustion gas from the burner disposed on the uppermost stage to a main after-air port is 1.1 to 3.3 seconds.Type: GrantFiled: May 14, 2008Date of Patent: February 24, 2015Assignee: Babcock-Hitachi K.K.Inventors: Hisayuki Orita, Masayuki Taniguchi, Akihito Orii, Yuki Kamikawa, Hirofumi Okazaki
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Patent number: 8733255Abstract: 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: GrantFiled: June 10, 2011Date of Patent: May 27, 2014Assignee: Clyde Bergemann Drycon GmbHInventors: Rafael Moreno Rueda, Jeremy Phillip Kirsch
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Patent number: 8662884Abstract: 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: GrantFiled: March 6, 2008Date of Patent: March 4, 2014Assignees: IHI Corporation, Electric Power Development Co., Ltd.Inventors: Toshihiko Yamada, Terutoshi Uchida, Masami Sato
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Patent number: 8636501Abstract: A method is proposed for regulating a firing device taking into account the temperature and/or the burner load, in particular with a gas burner, comprising the regulation of the temperature (Tactual) produced by the firing device using a characteristic which shows a value range corresponding to a desired temperature (Tdesired) dependent upon a first parameter (mL,VL) corresponding to the burner load (Q), wherein when representing the characteristic, a second parameter, preferably the air ration (?), defined as the ratio of the actually supplied quantity of air to the quantity of air theoretically required for optimal stoichiometric combustion, is constant.Type: GrantFiled: October 19, 2010Date of Patent: January 28, 2014Assignee: Landshut GmbHInventors: Martin Geiger, Ulrich Geiger, Rudolf Tungl
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Patent number: 8607719Abstract: The effective length of a control arm having manually alterable stops repositionable along is rendered automatically changeable by means of a solenoid movable strip arranged to be either pressed against the control arm or removed from contact with the control arm by operation of the automatically operated solenoid which may usually be operated by a change in the surrounding ambient temperature.Type: GrantFiled: May 3, 2010Date of Patent: December 17, 2013Inventor: George Kuzni
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Patent number: 8591608Abstract: 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: GrantFiled: September 29, 2009Date of Patent: November 26, 2013Assignee: MSW Power CorporationInventors: Matthew Young, Steven Anthony, Stephen Armstrong, Steven Chase
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Patent number: 8578869Abstract: A method and apparatus to batch de-coat the organics in metal scrap, and/or gasify the organics from certain types of waste material (including biomass, municipal solid waste, industrial waste, and sludge). The apparatus is suited for use on a batch tilting single entry rotary furnace of the type used to melt the metal scrap in the aluminum industry. The apparatus uses a burner in the tilting rotary furnace but does not necessarily melt the metal scrap. It preferably operates below the melting temperature of the metal scrap (<1400 F) and below the stoichiometric level (more specifically <12% oxygen) to partially combust the organic in the tilting rotary furnace. The gasified organics depart the furnace in a complete closed circuit where no air is allowed to entrain into the flue gases. These organic filled gases (synthetic gases) are fully incinerated in a separate thermal oxidizer where a stoichiometric burner uses either natural gas or liquid fuel to ignite the synthetic gas.Type: GrantFiled: April 10, 2008Date of Patent: November 12, 2013Assignee: Chinook Sciences LLCInventor: Fanli Meng
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Patent number: 8550018Abstract: A stirring control method is adapted for a combustion apparatus which includes a furnace for burning fuel material, and a stirring member rotatably disposed in the furnace for stirring the fuel material and ash resulting from burning of the fuel material. The stirring control method includes: controlling rotation of the stirring member at an initial rotational speed; determining whether a height of the fuel material reaches an upper detection range; generating an indication when the height of the fuel material reaches the upper detection range; determining whether the height of the fuel material reaches a lower detection range when the height of the fuel material does not reach the upper detection range; and controlling rotation of the stirring member at a rotational speed higher than the initial rotational speed when the height of the fuel material reaches the lower detection range.Type: GrantFiled: November 21, 2011Date of Patent: October 8, 2013Assignee: Suncue Company Ltd.Inventor: Jung-Lang Lin
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Publication number: 20130232946Abstract: 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: Douglas HAMRIN, Jeffrey ARMSTRONG
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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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Publication number: 20130232945Abstract: 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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Publication number: 20130213283Abstract: 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 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: ApplicationFiled: December 21, 2012Publication date: August 22, 2013Applicant: COVANTA ENERGY CORPORATIONInventor: Covanta Energy Corporation
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Patent number: 8500441Abstract: A method is proposed for regulating a firing device taking into account the temperature and/or the burner load, in particular with a gas burner, comprising the regulation of the temperature (Tactual) produced by the firing device using a characteristic which shows a value range corresponding to a desired temperature (Tdesired) dependent upon a first parameter (mL, VL) corresponding to the burner load (Q), wherein when representing the characteristic, a second parameter, preferably the air ratio (?), defined as the ratio of the actually supplied quantity of air to the quantity of air theoretically required for optimal stoichiometric combustion, is constant.Type: GrantFiled: June 20, 2005Date of Patent: August 6, 2013Assignee: EBM-Papst Landshut GmbHInventors: Martin Geiger, Ulrich Geiger, Rudolf Tungl
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Patent number: 8453585Abstract: 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: GrantFiled: April 13, 2009Date of Patent: June 4, 2013Assignees: Babcock & Wilcox Power Generation Group, Inc., American Air Liquide, Inc.Inventors: Bryan B. Stone, Denny K. McDonald, Allan J. Zadiraka, Rajani K. Varagani
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Publication number: 20130089822Abstract: The invention refers to the method for the utilization of low-concentration mixtures of a combustible gas and air with the stable recovery of heat and the flow-reversal device for the embodiment of the method.Type: ApplicationFiled: December 8, 2011Publication date: April 11, 2013Applicants: KATALIZATOR Sp. z.o.o., INSTYTUT INZYNIERII CHEMICZNEJ POLSKIEJ AKADEMII NAUKInventors: Krzysztof Gosiewski, Manfred Jaschik, Anna Pawlaczyk, Krzysztof Warmuzinski, Marek Tanczyk, Krzysztof Gielzak, Artur Wojdyla, Tadeusz Machej, Leszek Michalski
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Patent number: 8377382Abstract: A recycling furnace is provided for processing potentially explosive precious metal-containing materials having organic fractions that combust with great energy. The furnace includes a switching facility for alternating operation of two burning-off chambers of the furnace between: (A) pyrolysis or carbonization under protective furnace gas in an atmosphere comprising maximally 6 wt-% oxygen, and (B) oxidative combustion of the organic fractions including carbon. The furnace has indirect heating and a control that determines the end of the pyrolysis or carbonization by a sensor and controls the switching facility to supply air or oxygen to the interior of the furnace. A continuous conveyor for dosing of liquids or liquefied substances during the pyrolysis is controlled by at least one parameter of post-combustion, preferably a temperature sensor. A single waste gas treatment facility is used for thermal post-combustion for the two furnace chambers.Type: GrantFiled: May 1, 2012Date of Patent: February 19, 2013Assignee: Heraeus Precious Metals GmbH & Co. KGInventors: Christian Nowottny, Horst Meyer, Matthias Grehl, Dieter Schafer, Hans-Joachim Alt, Wilhelm Glab
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Publication number: 20130025546Abstract: According to the required amount of heating, a controller of a combustion apparatus exercises selective on-off switching control on capacity control switching valves for the supplying of gas to three different combustion areas partitioned respectively by a group of three combustion burners, a group of five combustion burners and a group of nine combustion burners, whereby the three combustion areas can selectively be burned, thereby the combustion capacity is changed and switched to any of a plurality of combustion capacity levels. A combustion exhaust temperature sensor is disposed in the vicinity of the inlet of an exhaust stack. Judgment temperatures corresponding respectively to combustion capacity levels for combustion exhaust high-temperature abnormality judgment are set.Type: ApplicationFiled: July 20, 2012Publication date: January 31, 2013Applicant: NORITZ CORPORATIONInventors: Shinichi OKAMOTO, Masato Doyama
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Publication number: 20130000530Abstract: A portable medical waste processing system and method includes a processing device and a medical waste container. The processing device has an enclosure with a housing and a lid, with at least one heater, a control system, a filtration system and a cooling system inside the enclosure. The control system regulates the temperature of the heater and time of the process cycle. The filtration system prevents noxious odors emanating from the container during the process cycle. The cooling system prevents heat build-up inside the enclosure and also ensures that the sides of the enclosure do not exceed harmful temperatures. The portable medical waste processing system melts syringes and sterilize needles, lancets and infectious waste that are placed in the medical waste container that is inserted into the heater. The system identifies and responses to short and long term power interruptions.Type: ApplicationFiled: June 29, 2012Publication date: January 3, 2013Applicant: MEDICAL ENGINEERING DEVELOPMENT SOLUTIONS, INC.Inventors: Timothy W. Coressel, Mark W. Allen, Brian J. Cirbo
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Publication number: 20120270162Abstract: 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: ApplicationFiled: September 21, 2010Publication date: October 25, 2012Applicant: KAILASH & STEFAN PTY LTDInventors: Fredrick Stefan Jarl Dahlhielm, Kailash Nath Sriram
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Publication number: 20120247377Abstract: A stirring control method is adapted for a combustion apparatus which includes a furnace for burning fuel material, and a stirring member rotatably disposed in the furnace for stirring the fuel material and ash resulting from burning of the fuel material. The stirring control method includes: controlling rotation of the stirring member at an initial rotational speed; determining whether a height of the fuel material reaches an upper detection range; generating an indication when the height of the fuel material reaches the upper detection range; determining whether the height of the fuel material reaches a lower detection range when the height of the fuel material does not reach the upper detection range; and controlling rotation of the stirring member at a rotational speed higher than the initial rotational speed when the height of the fuel material reaches the lower detection range.Type: ApplicationFiled: November 21, 2011Publication date: October 4, 2012Applicant: SUNCUE COMPANY, LTD.Inventor: Jung-Lang Lin
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Patent number: 8274560Abstract: A flame detector is disclosed for monitoring a flame during a combustion process, comprising a camera and a carrier tube, wherein the camera is arranged at a front end of the carrier tube such that an optical access of the camera is directed toward the flame when the front end of the carrier tube is mounted in the vicinity of a burner nozzle aperture.Type: GrantFiled: March 12, 2009Date of Patent: September 25, 2012Assignee: ABB Research LtdInventors: Lorenzo Galfrascoli, Dacfey Dzung, Matteo Venturino, Olivier Steiger
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Patent number: 8219247Abstract: 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: GrantFiled: November 19, 2009Date of Patent: July 10, 2012Assignee: Air Products and Chemicals, Inc.Inventors: Ali Esmaili, William Robert Licht, Xianming Jimmy Li, Oliver J. Smith, IV
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Patent number: 8188329Abstract: A recycling furnace and method are provided for processing potentially explosive precious metal-containing materials having organic fractions that combust with great energy, the furnace including a switching facility for alternating operation of a burning-off chamber of the furnace between: (A) pyrolysis or carbonization under protective furnace gas in an atmosphere comprising maximally 6 wt-% oxygen, and (B) oxidative combustion of the organic fractions including carbon. The furnace has indirect heating and a control that determines the end of the pyrolysis or carbonization by a sensor and controls the switching facility to supply air or oxygen to the interior of the furnace. Steps (A) and (B) are carried out sequentially in the furnace chamber, wherein neither the batch is changed, nor the furnace is opened. After the end of step (A) is determined, step (B) proceeds right after the pyrolysis or carbonization by supplying air or oxygen.Type: GrantFiled: March 27, 2008Date of Patent: May 29, 2012Assignee: Heraeus Precious Metals GmbH & Co. KGInventors: Christian Nowottny, Horst Meyer, Matthias Grehl, Dieter Schäfer, Hans-Joachim Alt, Wilhelm Glab
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Publication number: 20120090515Abstract: The invention mainly relates to a process for recycling blast furnace gas in which at least one portion of the gases resulting from the blast furnace undergo a CO2 purification step so as to create a CO-rich gas which is reinjected at a first top injection point located above the base of the blast furnace at a temperature between 700° C. and 1000° C. through a top injection line, and at a second bottom injection point at the base of the blast furnace at a temperature between 1000° C. and 1300° C. through a bottom injection line, in which the gases from the bottom and top injection lines are heated by means of heaters from which the gases emerge at a temperature between 1000° C. and 1300° C. The process of the invention is essentially characterized in that a portion of the CO-rich gas (18) exiting the purification step is directly introduced into the top injection line (21) via a cold gas injection line (35) in order to obtain a temperature between 700° C. and 1000° C.Type: ApplicationFiled: March 17, 2009Publication date: April 19, 2012Applicant: ARCELORMITTAL INVESTIGACION Y DESARROLLO S.L.Inventors: Fernand Didelon, Yves Rachenne, Christian Gillion, Jean Borlee, Dominique Sert
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Patent number: 8147587Abstract: A system and associated method for improved mercury removal from a flow containing combustion exhaust. The system includes a filtration arrangement through which the flow proceeds to remove material, including mercury, from the flow. The system includes a sensor arrangement sensing a mercury concentration within the flow downstream of the filtration arrangement and providing a signal indicative of the sensed mercury concentration. The system includes an adjustable temperature control arrangement changing a temperature of the combustion exhaust proceeding to the filtration arrangement in response to the signal indicative of the sensed mercury concentration to change an amount of mercury being removed from the flow.Type: GrantFiled: April 15, 2011Date of Patent: April 3, 2012Assignee: BHA Group, Inc.Inventors: Vishal Bansal, Peter Martin Maly, Robert Warren Taylor
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Patent number: 8082915Abstract: According to embodiments of the present invention, a pellet stove includes a firepot assembly with a bottom plate slideable along rails to move between a closed position during combustion in the firepot and an open position during ash removal. According to other embodiments, a firebox or combustion enclosure includes a plurality of airfoils formed on the inner and outer surfaces of the enclosure to facilitate heat exchange between exhaust gases flowing across the inner surface of the enclosure and air blown across the outer surface of the enclosure. According to some embodiments, the airfoils and enclosure are of integral unibody construction. According to yet other embodiments, a user sets parameters via a wall control unit, and a stove control unit receives the parameters and automatically controls fuel feed rate, ignition, convection blower, combustion blower, and/or firepot cleaning based on the one or more parameters.Type: GrantFiled: March 30, 2009Date of Patent: December 27, 2011Assignee: HNI Technologies Inc.Inventors: Colin J. McCormick, Daniel S. Henry, Matthew Wicks, Gordon E. Taylor
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Publication number: 20110239914Abstract: Two temperature controllers, a first temperature controller and a second temperature controller are provided, and combustion in the furnace is controlled based on a first signal and a second signal outputted therefrom. Doing so enables safe control of the furnace even when a failure occurs in one of the temperature controllers.Type: ApplicationFiled: March 25, 2011Publication date: October 6, 2011Applicant: YAMATAKE CORPORATIONInventors: Akira Yamada, Yuuichi Kumazawa, Tomoya Nakata, Katsumi Morikawa
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Publication number: 20110146543Abstract: Method of operating a combustion furnace comprising at least one pair of particulate fuel burners positioned opposite one another across a combustion zone, whereby each burner of a pair operates in turn to generate a flame directed at the other inactive burner of the pair so as to locally overheat the burner block of the inactive burner.Type: ApplicationFiled: December 23, 2009Publication date: June 23, 2011Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges ClaudeInventors: Niomar M. MARCANO, Faustine A. Panier, Xavier Paubel, Remi P. Tsiava, Rajani K. Varagani, Yuan Xue
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Patent number: 7963236Abstract: Disclosed is an air-fuel ratio control boiler using a air pressure sensor and method for controlling the air-fuel ratio thereof. The boiler is comprised of a fan, the air pressure sensor, a air pressure sensor voltage measurement unit, a air pressure sensor voltage compensation unit, and a controller, and previously compensates for noise factors caused by deviation (error) of a component property, a constituent, of the air pressure sensor so as to be matched to initial reference voltage prior to operating the fan, thereby maximizing the effectiveness of the air-fuel ratio. Further, the boiler makes it possible not only to exert an optimal fuel efficiency effect due to the maximization of combustion efficiency, but also to minimize discharge of harmful gases, thereby preventing environmental pollution in advance, and thus improving the reliability of products.Type: GrantFiled: September 14, 2005Date of Patent: June 21, 2011Assignee: Kyungdong Network Co., Ltd.Inventor: Si Hwan Kim
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Publication number: 20110137444Abstract: The present invention discloses a system for optimizing the operation of an induration furnace and a method thereof; the system comprising: an interactive means to monitor and control the furnace to provide an optimized furnace operation, calibration means for generating a plurality of ideal set points for validation purposes, and a processing unit receiving, in real-time, the online process data from the interactive means and compute therein a plurality of real-time active set points which are matched with corresponding ideal set points from the calibration means, wherein, if optimization is required, an optimizing signal is generated and communicated to the interactive means. The system predicts in real-time the process and product parameters, that cannot be measured directly, thus, providing real-time optimization of the furnace operation, and thereby reducing the operating and production costs.Type: ApplicationFiled: December 3, 2010Publication date: June 9, 2011Inventors: Venkataramana Runkana, Sushanta Majumder
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Patent number: 7954438Abstract: 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: March 12, 2008Date of Patent: June 7, 2011Inventors: Dennis Brazier, Mark J. Reese, Thomas Pittman, Benjamin A. Reese
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Publication number: 20110056416Abstract: A system with a boiler and a turbine, and an associated control method. The method includes sensing a plurality of operating conditions at a first common boiler location. At least one of the plurality of operating conditions sensed at the first common location is indicative of a combustion anomaly occurring during operation. The combustion anomaly indicated by the plurality of operating conditions at the first common location is traced back to an offending burner that is at least partially responsible for the combustion anomaly based on a model that takes into consideration at least two of the plurality of operating conditions sensed at the first common location. At least one of a process input and a boiler configuration is adjusted to establish a desired value of the operating conditions at the first common location.Type: ApplicationFiled: September 4, 2009Publication date: March 10, 2011Applicant: General Electric CompanyInventors: Neil Colin Widmer, David Moyeda, William Randall Seeker, Michelle Simpson