With Boiler Patents (Class 110/234)
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Patent number: 11912148Abstract: A method is provided for managing energy. The method comprises collecting information relating to amounts of energy stored by a plurality of members of a group, and relating to energy requirements of the members. The method further comprises determining a price for distributing energy to a non-member of the group, determining whether to supply energy stored by the members to the non-member at the determined price, and issuing instructions to distribute energy upon determining that energy stored by the plurality of members should be supplied to the non-member.Type: GrantFiled: June 10, 2015Date of Patent: February 27, 2024Assignee: SONY CORPORATIONInventors: Tom Hostyn, Philip Marivoet, Yoeri Apts, Christopher Rutherford, Vanessa Schelkens, Dimitri Torfs, Francis Van Aeken
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Patent number: 11492973Abstract: A heat exchanger (HEX) for cooling air in a gas turbine engine is provided. The HEX may comprise a central manifold comprising an inlet portion, a first outlet portion, and a second outlet portion. The HEX may further comprise a plurality of tubes coupled to the central manifold, the plurality of tubes comprising at least a first tube, a second tube, a third tube, and a fourth tube, a shroud at least partially encasing said plurality of tubes, and a cooling air flow path defined by at least one of the shroud, the plurality of tubes, and an outer surface of the central manifold, wherein the cooling air flow path is orthogonal to said plurality of tubes.Type: GrantFiled: March 26, 2019Date of Patent: November 8, 2022Assignee: Raytheon Technologies CorporationInventors: Paul W. Duesler, Frederick M. Schwarz
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Patent number: 11359153Abstract: A method for preparing biochar, including steps as follows: dosing: putting pre-crushed biomass into a reactor; charring conversion: heating the reactor to a certain temperature and pressure, and putting an active group-containing active agent containing 1% to 5% by mass of biomass and a catalyst containing 1% to 10% by mass of biomass (or putting the catalyst first and then putting the active agent) into the reactor to perform solid solution charring on the biomass; and cooling: after the charring conversion is completed, cooling the reactor to 40° C. or lower to obtain the biochar. Feedstocks are abundant and cheap, farmland biomass waste is reused, and the active group-containing active agent is added in biomass charring, which can effectively inhibit side reactions and coordinate with the catalyst to perform solid solution charring on the biomass, thereby improving a biochar conversion rate and making the charring process clean and environmentally friendly.Type: GrantFiled: November 26, 2018Date of Patent: June 14, 2022Inventor: Xianjun Xing
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Patent number: 11186779Abstract: A pyrolysis and gasification system produce a synthesis gas and bio-char from a biomass feedstock. The system includes a feed hopper that has a flow measurement device. The system also includes a reactor that is operable in a gasification mode or a pyrolysis mode. The reactor is configured to receive the biomass feedstock from the feed hopper. The reactor is operable to provide heat to the biomass feedstock from the feed hopper to produce the synthesis gas and bio-char. The system also includes a cyclone assembly. The produced synthesis gas including the bio-char is fed to the cyclone assembly. The cyclone assembly removes a portion of the bio-char from the synthesis gas.Type: GrantFiled: July 3, 2019Date of Patent: November 30, 2021Assignee: The Texas A&M University SystemInventors: Sergio C. Capareda, Calvin B. Parnell, Jr., David B. Carney
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Patent number: 11041627Abstract: A combustion assembly housing contains primary and secondary combustion chambers and an ash receptacle. The primary combustion chamber has primary and exhaust grates. Fuel pellets fall in downward onto the primary grate; intake air flows in upward through the primary grate; exhaust gas flows out rearward through the exhaust grate. The primary grate supports unburned fuel pellets and permits partially burned pellets to fall through. Multiple vertical passages through the primary grate are each deeper than they are wide. The secondary combustion chamber has a secondary grate. Partially burned pellets fall in downward onto the secondary grate; intake air flows in rearward, through the secondary grate, and out upward into the primary combustion chamber. The secondary grate supports partially burned pellets and permits ash to fall through downward into the ash receptacle. Intake air flows rearward into the ash receptacle and upward into the secondary combustion chamber.Type: GrantFiled: October 10, 2020Date of Patent: June 22, 2021Assignee: SUN MOUNTAIN STOVE WORKS INC.Inventor: William K. Amlin
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Patent number: 10717118Abstract: [Problem] The purpose of the present invention is to provide: a plasma melting method for performing, on a material to be processed such as incineration ash and general waste or industrial waste, a processing in which plasma is generated at a low voltage in the upper part of a furnace and the material to be processed is efficiently subjected to a melt-processing; and a plasma melting furnace used for the plasma melting method.Type: GrantFiled: April 21, 2017Date of Patent: July 21, 2020Inventor: Setsu Anzai
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Patent number: 10538433Abstract: A method and apparatus for producing activated carbon from biomass or other solid carbonaceous feed within a housing containing boiler components, by spatial separation of drying, pyrolysis and activation zones as the feed is conveyed across the bottom of the housing, such that the thermal requirements for drying, pyrolysis, and activation of the solid carbonaceous feed occur by direct radiation from the combustion flame located above the drying, pyrolysis and activation zones. The balance of the heat not required for drying, pyrolysis, and activation is used to vaporize and superheat steam as part of a conventional steam/electric power plant.Type: GrantFiled: July 11, 2019Date of Patent: January 21, 2020Assignee: ADVANCED ORGANIC METHODS LLCInventors: Russel Mark Adams, John Wright Coulter Black
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Patent number: 10280805Abstract: The present disclosure relates to a method of generating energy. The teachings thereof may be embodied in a method comprising: atomizing an electropositive metal; combusting the metal with a reaction gas; mixing the resulting combustion products with water, or an aqueous solution, or a suspension of a salt of the metal; separating a resulting mixture into (a) solid and liquid constituents and (b) gaseous constituents; at least partly converting energy from the separated constituents. Mixing the combustion products may include: atomizing liquid or gaseous water; or atomizing or nebulizing an aqueous solution or a suspension of a salt of the electropositive metal, into the reacted mixture.Type: GrantFiled: September 11, 2015Date of Patent: May 7, 2019Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Helmut Eckert, Guenter Schmid, Dan Taroata
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Patent number: 10247049Abstract: At least one aspect of the technology provides a self-contained processing facility configured to convert organic, high water-content waste, such as fecal sludge and garbage, into electricity while also generating and collecting potable water.Type: GrantFiled: June 21, 2017Date of Patent: April 2, 2019Assignee: Bill & Melinda Gates FoundationInventor: Peter Janicki
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Patent number: 9903583Abstract: A feed-water discharge side of a condenser is connected to a feed-water entry side of an flue gas cooler through a bypass line provided with a steam production preventive pump and with an inlet cutoff valve. A feed-water discharge side of the flue gas cooler is connected to the feed-water entry side of the condenser through a steam production preventive water circulation line provided with an outlet cutoff valve. When a boiler feed-water pump is stopped in boiler fuel cutoff, the inlet and outlet cutoff valves are opened and the steam production preventive pump is activated to cause water to flow through the bypass line into the flue gas cooler, is returned through the steam production preventive water circulation line to the condenser and is circulated.Type: GrantFiled: February 25, 2016Date of Patent: February 27, 2018Assignee: IHI CorporationInventor: Terutoshi Uchida
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Patent number: 9890344Abstract: The present invention relates to a coal supply device for reducing dust of coal input for dry and supplying dispersing and supplying the coal in a system for drying coal using reheat steam, and more particularly, to a device to minimize dust when the coal is supplied to a multi-stage dryer from a coal constant feeder through a pulverizer in a multi-stage dryer for drying coal using reheat steam and disperse and supply the coal to a transfer device and a coal drying system in which coal which is primarily dried in the first coal dryer is inputted into the second coal dryer and thus is secondarily dried, includes a coal constant feeder supplying a predetermined amount of coal onto the upward surface of the first transfer plate; and a dust reducer constituted by an inlet pipe coupled to an outlet of the coal constant feeder by a bearing, a worm wheel coupled onto the outer periphery of the inlet pipe, a worm gear-coupled with the worm wheel and rotating with rotary force transferred from a motor, a curved pipe oType: GrantFiled: June 17, 2015Date of Patent: February 13, 2018Assignee: HANKOOK TECHNOLOGY INC.Inventor: Sung Kon Kim
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Patent number: 9857074Abstract: The present disclosure relates to a boiler water supply preheater system which preheats water (boiler water supply) supplied to a boiler by a predetermined preheating means, wherein the preheating means is a Rankine cycle (thermal cycle) which moves heat of a waste heat source in the boiler to the boiler water supply to perform preheating and drives a generator to generate electric power using a heat medium.Type: GrantFiled: January 19, 2016Date of Patent: January 2, 2018Assignee: IHI CorporationInventors: Hideki Ogata, Toshiro Fujimori, Kazuo Miyoshi, Ryo Akiyoshi
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Patent number: 9845957Abstract: A pellet stove includes a hopper for storing pellets, a basket for receiving the pellets by gravity, a duct for conveying combustion air to the basket, and a conduit for conducting heated air away from the basket. The position of the basket is adjustable, such as by raising and lowering it, or by rotating it, so as to control the number of pellets in the area of most intense combustion. One or more burn plates, positioned below the basket, provide platforms on which pellets falling through the basket can burn down to a smaller size. The pellet stove requires no external source of power. The stove so constructed enables quiet, efficient and clean burning of the pellets.Type: GrantFiled: December 1, 2015Date of Patent: December 19, 2017Inventors: Richard L. Hill, Don P. Alexander
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Patent number: 9719729Abstract: A heating system for heating fluid in a tank includes a heating device for heating and pumping water to a tank heater via a hose. The tank heater has a pump connected to a heat exchanger. The heat exchanger has a plurality of tubes disposed in a housing that receive fluid from the tank. The heating device pumps hot water through the heat exchanger to transfer heat to fluid in the tubes and the back to the heating device. The pump circulates fluid within the heat exchanger.Type: GrantFiled: April 10, 2014Date of Patent: August 1, 2017Inventor: Vince Rottinghaus
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Publication number: 20150107497Abstract: A system and for incinerating solid waste material that generates energy and minimal emissions. The incinerator system of the present disclosure is modular and may be configured to fit within a desired location. The system accepts raw solid material and processes, dries and ignites the waste material in an, optionally automated process.Type: ApplicationFiled: October 21, 2014Publication date: April 23, 2015Inventor: Anthony Hughey
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Patent number: 8980206Abstract: A method is illustrated and described for reducing unwanted substances by injecting a reactant into a flue gas of a steam generator. In order that the reactant can also be used in larger steam generators and/or combustion chambers, a method is proposed, in which the reactant is injected into the combustion chamber of the steam generator via a reactant opening of a multi-component nozzle, in which an enveloping medium is injected into the combustion chamber through at least one enveloping medium opening arranged outside the reactant opening, and in which the enveloping medium at least partly envelops the reactant in the combustion chamber and in this way at least partly shields the reactant from the flue gas.Type: GrantFiled: November 13, 2013Date of Patent: March 17, 2015Assignee: Babcock Borsig Steinmueller GmbHInventors: Stefan Hamel, Christian Storm
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Publication number: 20150013300Abstract: A boiler system having a series of boilers. Each boiler includes a shell having an upstream end, a downstream end, and a hollow interior. The boilers also have an oxidizer inlet entering the hollow interior adjacent the upstream end of the shell and a fuel nozzle positioned adjacent the upstream end of the shell for introducing fuel into the hollow interior of the shell. Each boiler includes a flue duct connected to the shell adjacent the downstream end for transporting flue gas from the hollow interior. Oxygen is delivered to the oxidizer inlet of the first boiler in the series. Flue gas from the immediately preceding boiler in the series is delivered through the oxidizer inlet of each boiler subsequent to the first boiler in the series.Type: ApplicationFiled: June 3, 2014Publication date: January 15, 2015Applicant: Washington UniversityInventors: Richard L. Axelbaum, Benjamin M. Kumfer, Fei Xia, Akshay Gopan, Bhupesh Dhungel
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Publication number: 20140352634Abstract: A ground supported single drum power boiler is described combining a refractory lined and insulated stepped floor; refractory lined and insulated combustion chamber; integrated fuel chutes configured to pre-dry wet solid fuel; internal chamber walls; configurable combustion air systems; a back pass with after-burner ports and cross flow superheaters; and a rear wall that acts as the downcomers feeding the other walls. A second embodiment is adaptable as a gasifier.Type: ApplicationFiled: November 21, 2012Publication date: December 4, 2014Inventors: Eugene SULLIVAN, Daniel R. HIGGINS
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Patent number: 8882493Abstract: A method and system for fueling of a burner in a direct-fired device using syngas. A gasifier produces syngas from a carbonaceous feedstock such as biomass. The syngas is fed to a syngas burner. A booster burner disposed between the gasifier and the syngas burner increases the temperature of the syngas. The booster burner may be provided with an approximately stoichiometric or sub-stoichiometric amount of oxidant. Operation of the booster burner may be regulated based on the temperature of the syngas. The syngas burner may be used to direct-fire a device requiring a relatively high flame temperature, such as, for example, a lime kiln.Type: GrantFiled: March 17, 2011Date of Patent: November 11, 2014Assignee: Nexterra Systems Corp.Inventors: Hendrick Vandergriendt, Duncan Meade, Yan Li, Nebojsa Plavsic
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Patent number: 8863675Abstract: A steam generator for producing superheated steam in a waste incineration plant, includes a boiler housing having a combustion chamber with walls having an evaporator. The evaporator has tubes carrying water and being acted upon by heat energy released during incineration of waste, for producing superheated steam. A wall superheater for increasing temperature of the superheated steam includes a plurality of tubes in a wall of the boiler housing for carrying superheated steam being protected against flue gas from an incineration process by plate-like elements formed of a corrosion-proof material. The boiler housing includes an evaporator housing section having the water-carrying tubes and a wall-superheater housing section spatially separated from the evaporator housing section and having the superheated steam-carrying tubes. The wall-superheater housing section is movable relative to and disposed downstream of the evaporator housing section in flue gas flow direction.Type: GrantFiled: December 7, 2009Date of Patent: October 21, 2014Assignee: MVV Umwelt GmbHInventors: Johannes Günther, Hansjörg Roll, Peter Knapp, Uwe Zickert
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Publication number: 20140308620Abstract: The present invention relates to a pulverized coal fired boiler with wall-attachment secondary air and grid overfire air. Primary burners including primary air spouts, secondary air spouts and close coupled overfire air spouts arranged at intervals along the height direction of a hearth are arranged on four corners of the hearth. Two-way wall-attachment secondary air spouts and one-way wall-attachment secondary air spouts are arranged from bottom to top in a primary combustion zone where the primary burners are located. One-way wall-attachment secondary air spouts are arranged in a reduction zone between the primary burners and the top overfire air spouts, and grid overfire air spouts are arranged in a burnout zone where the overfire air is supplied.Type: ApplicationFiled: January 15, 2013Publication date: October 16, 2014Applicant: YANTAI LONGYUAN POWER TECHNOLOGY CO., LTD.Inventors: Yuankai Deng, Yonghe Zhang, Ming Li, Bo Hou, Jinlei Cui, Tanrong Wei, Weiguo Rong, Lei Li, Guofeng Xu
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Publication number: 20140305357Abstract: A dual phase fuel feeder is disclosed that can be used to provide both solid fuels and liquid fuels to a boiler, such as a fluidized bed boiler. The fuel feeder includes a sloped chute which defines a solid feedpath. Gas distribution nozzles are located at the base of the fuel feeder, and secondary nozzles are located so as to be able to distribute a liquid or particulate fuel into the solid feedpath. This permits the liquid fuel to contact the solid fuel and be carried into the fluidized bed instead of becoming suspended above the bed.Type: ApplicationFiled: April 7, 2014Publication date: October 16, 2014Inventors: James F. DeSELLEM, Karl M. HEIL, Jeremiah J. YODER, Albert D. LaRUE, Mikhail MARYAMCHIK, William R. STIRGWOLT
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Publication number: 20140309475Abstract: A method and an apparatus for disposing wastes comprising the steps of conducting a hydrothermal decomposition reaction of the wastes, separating the products into a solid fuel and waste water, combusting the solid fuel, scrubbing the combustion gas, generating steam using the heat generated by the combustion, and purifying the waste water, exhibit a high energy-efficiency, while exhibiting a high removal rate of the pollutants generated during the combustion.Type: ApplicationFiled: November 18, 2013Publication date: October 16, 2014Inventors: Robert Van Naarden, Marco Bonilla, Hans Jasper, Robert Jasper, Kuni Yoshikawa, Toshifumi Yamada, Matthew Song
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Publication number: 20140299027Abstract: A large-size circulating fluidized bed boiler, comprising: a furnace having a vertical furnace center line; and at least two groups of cyclones, each cyclone of each group of cyclones having an inlet gas pass communicated with the furnace. A furnace cross section formed by outer sidewalls and located at the inlet gas pass of the cyclone is a polygon having 2×n sides, and n is a positive integer greater than 1. The polygon is axially symmetric with respect to a perpendicular bisector of each side of the polygon, and when n is 2, the polygon is a square. Triangles formed by two endpoints of an inlet of the inlet gas pass of each cyclone at the cross section and an intersection of the furnace center line and the cross section are congruent. A single flow field in communication with each of the inlet is formed in the cross section.Type: ApplicationFiled: January 19, 2012Publication date: October 9, 2014Inventors: Qinggang Lu, Ming Gao, Yunkai Sun, Guoliang Song, Xiaofang Wang, Yongjie Na, Dongyu Wang, Haigang Wang
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Publication number: 20140290542Abstract: A burner system for consumption of waste fuel comprises a screw conveyor having a longitudinal hollow interior for air distribution and radially disposed air intake orifices connecting the hollow interior to a plurality of combustion chambers, which includes a first combustion chamber disposed centrally around the screw conveyor and at least one orifice; a second combustion chamber disposed concentrically around the first combustion chamber, receiving burning waste fuel from the first combustion chamber, and in fluid communication with the air intake orifice to provide air from an air blower through the orifice; and a third combustion chamber disposed concentrically around the second combustion chamber, receiving waste fuel from the second combustion chamber, and in fluid communication with the air intake orifice to provide air from the air blower.Type: ApplicationFiled: June 16, 2014Publication date: October 2, 2014Inventors: WILLIAM HUNKYUN Bang, THOMAS ANTHONY PATTI PATERNOSTRO
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Publication number: 20140295358Abstract: A method and apparatus for burning hydrocarbons or other combustible liquids and gases, the apparatus (APP) has been provided with at least one inlet for a liquid and/or gaseous fuel (FUE) and air (AIR) and at least one outlet (EXHG) for gases for removing the gases (EXHG) generated in the apparatus (APP), at least one measurement and adjustment unit (C) for adjusting the amount of fuel (FUE) and air (AIR), at least one pre-combustion zone (Cz11, Cz12, Tz1) for the partial combustion of gases, and at least one post-combustion zone (Tz2, Cz21, Cz22) for the combustion of gases generated in pre-combustion, for the reduction of NOx's produced in pre-combustion, and/or for the oxidation of hydrocarbon and carbon monoxide emissions.Type: ApplicationFiled: March 27, 2014Publication date: October 2, 2014Applicant: OILON OYInventors: Reijo LYLYKANGAS, Eero PEKKOLA, Tero TULOKAS
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Publication number: 20140290541Abstract: An energy conversion system comprises a plurality of concentrically arranged combustion chambers for passing incinerated waste plastic fuel along a generally S-shaped combustion path into a discharge section for thermally coupling the incinerated waste plastic fuel to a fluid material to facilitate an energy conversion process. The combustion chambers are arranged concentrically around a single rotatable feed mechanism and the combustion chambers are in fluid communication with one another. The fluid material is contained within a boiler in fluid communication with the combustion chambers for heating the fluid material to facilitate the energy conversion process.Type: ApplicationFiled: June 16, 2014Publication date: October 2, 2014Inventors: WILLIAM HUNKYUN Bang, THOMAS ANTHONY PATTI PATERNOSTRO
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Publication number: 20140223909Abstract: A comburant gas supply system is provided for a combustion boiler/turbine of a thermal power plant, a combustion boiler/turbine system and a thermal power plant. The gas supply system has an air separation module to separate and output an oxygen rich gas from an input air supply; a comburant gas storage module fluidly connected to the output of the air separation module for storage in liquid state of separated oxygen rich gas; a comburant gas supply module to supply the oxygen rich gas to the combustion boiler selectively from the air separation system and/or the comburant gas storage system. The air separation module has an oxygen rich gas output capacity determined from a demand rating for the combustion boiler/turbine adjusted with reference to a load factor across a predetermined operating period and/or the ASU size is increased to provide longer term energy storage capacity.Type: ApplicationFiled: September 18, 2012Publication date: August 14, 2014Applicant: DOOSAN BABCOCK LIMITEDInventors: Konrad Jerzy Kuczynski, Douglas John Spalding
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Patent number: 8795416Abstract: An in-situ forced oxidation wet flue gas desulfurization apparatus, method and arrangement for utilization with oxy-fuel combustion power plants. The apparatus is a tower-like structure having a flue gas scrubbing zone and a reaction zone located subjacent to the gas scrubbing zone. A sulfur oxide absorbing liquid slurry is supplied to the gas scrubbing zone to react with and scrub the sulfur oxides from the flue gas. The partially reacted liquid slurry reagent and the scrubbed products drain into the reaction zone, rising to a set level. Oxidation air is introduced into the liquid slurry in the reaction zone to force the in-situ oxidation of sulfur compounds collected in the reaction zone.Type: GrantFiled: October 12, 2009Date of Patent: August 5, 2014Assignee: Babcock & Wilcox Power Generation Group, Inc.Inventors: Dennis K. McDonald, Kevin J. Rogers
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Publication number: 20140190698Abstract: A method for producing steam includes combusting a fuel and an oxidant to generate heat in a combustion stream, and injecting impure water into the combustion stream such that the heat produces a steam stream including particulate matter precipitated from the impure water.Type: ApplicationFiled: January 4, 2013Publication date: July 10, 2014Applicant: PRATT & WHITNEY ROCKETDYNE, INC.Inventor: Jeffrey A. Mays
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Publication number: 20140144137Abstract: The invention in the preferred embodiment represents a method of powering any application requiring a motive body of steam in order to produce power, using stoichiometric oxyhydrogen combustion to vaporize a requisite flow of water. The steam-generation process produces water as the sole product of combustion. Applications include providing motive steam for thermal power generation systems within the electric power industry, electric-power generation systems within the railroad locomotive industry, and turbine-driven propulsion systems both water- and aeronautical-based.Type: ApplicationFiled: November 12, 2010Publication date: May 29, 2014Inventor: Monte D. DeWitt
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Publication number: 20140137779Abstract: Substantially pure high pressure steam is produced within a high pressure heat exchanger. Heat for the high pressure heat exchanger is provided from an outlet of an oxy-fuel combustion gas generator which discharges a steam/CO2 mixture at high pressure and temperature. The gas generator combusts oxygen and hydrocarbon fuel and mixes with water which can include contaminates therein in the form of dissolved solids or hydrocarbons. A separator is typically provided downstream of the gas generator and upstream of the heat exchanger and the steam/CO2 mixture is discharged from the gas generator at saturation temperature. A water fraction of the steam/CO2 mixture is discharged from the separator along with dissolved solids in concentrated brine form. The water heated into steam by the heat exchanger can be at least partially water separated within a condenser downstream of the heat exchanger.Type: ApplicationFiled: October 8, 2013Publication date: May 22, 2014Applicant: Clean Energy Systems, Inc.Inventors: Keith L. Pronske, Roger A. Anderson, Bradley J. Anderson, Daniel A. Greisen
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Publication number: 20140083374Abstract: The invention refers to a forced flow steam generator (10) and to a method for its operation. The forced flow steam generator (10) has a combustion chamber (11) with a burner arrangement (20). A fuel (B) and a mixture (G) consisting of pure oxygen and flue gas (R) are fed into the combustion chamber (11) or to the burner arrangement (20) for combusting. A flue gas duct (27) is connected to the combustion chamber (11) in the flow direction (S) of the flue gas (R), and a flue gas passage (26) is connected to the flue gas duct. The flue gas (R) for the oxygen-flue gas mixture (G) is fed back from the flue gas passage (26) via a flue gas recirculation line (28). The forced flow steam generator (10) is operated in the so-called oxyfuel process. A plurality of auxiliary heating surfaces (35) are arranged in the flue gas duct (27) downstream of the burner arrangement (20).Type: ApplicationFiled: December 2, 2011Publication date: March 27, 2014Applicant: ALSTOM TECHNOLOGY, LTD.Inventors: Gerhard Weissinger, Thoralf Berndt, Ralph Dobrowolski, Andreas Marquard
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Publication number: 20140069306Abstract: Coal is properly dried and the efficiency of a boiler is increased while suppressing any reduction in efficiency of the boiler and the generation of hydrocarbon gas components. Employed are a coal dryer that dries coal, a boiler in which the coal that is dried in the coal dryer is mixed with air for combustion and burned, an air heater that heats the air for combustion that is supplied to the boiler using combustion exhaust gas discharged from the boiler, a precipitator that collects dust included in the combustion exhaust gas, a desulfurization plant that performs a desulfurization process on the combustion exhaust gas, and heat recovery equipment that heats a heating medium using the combustion exhaust gas. The coal dryer dries the coal using the heat energy of the heating medium that has been heated in the heat recovery equipment.Type: ApplicationFiled: September 13, 2012Publication date: March 13, 2014Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Satoru Sugita, Shintaro Honjo, Takuya Okamoto
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Publication number: 20140011141Abstract: Provided is a combustion burner including: a fuel nozzle (51) that is able to blow a fuel gas obtained by mixing pulverized coal with primary air; a secondary air nozzle (52) that is able to blow secondary air from the outside of the fuel nozzle (51); a flame stabilizer (54) that is provided at a front end portion of the fuel nozzle (51) so as to be near the axis center; and a rectification member (55) that is provided between the inner wall surface of the fuel nozzle (51) and the flame stabilizer (54), wherein an appropriate flow of a fuel gas obtained by mixing solid fuel with air may be realized.Type: ApplicationFiled: March 7, 2012Publication date: January 9, 2014Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Keigo Matsumoto, Kazuhiro Domoto, Naofumi Abe, Jun Kasai
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Publication number: 20140004471Abstract: A method and system for fueling of a burner in a direct-fired device using syngas. A gasifier produces syngas from a carbonaceous feedstock such as biomass. The syngas is fed to a syngas burner. A booster burner disposed between the gasifier and the syngas burner increases the temperature of the syngas. The booster burner may be provided with an approximately stoichiometric or sub-stoichiometric amount of oxidant. Operation of the booster burner may be regulated based on the temperature of the syngas. The syngas burner may be used to direct-fire a device requiring a relatively high flame temperature, such as, for example, a lime kiln.Type: ApplicationFiled: March 17, 2011Publication date: January 2, 2014Applicant: NEXTERRA SYSTEMS CORP.Inventors: Hendrick Vandergriendt, Duncan Meade, Yan Li, Nebojsa Plavsic
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Publication number: 20130340689Abstract: A combustion device includes a device main body having a combustion chamber installed above a cyclone melting furnace configured to combust a pyrolysis gas generated from a waste material after incineration while turning the pyrolysis gas, and configured to combust an unburnt gas discharged from the cyclone melting furnace. Further, the combustion device includes a plurality of sidewall boiler water pipes configured to cover a sidewall of the device main body from a periphery thereof and extending along the sidewall throughout upward and downward directions of the device main body.Type: ApplicationFiled: March 18, 2011Publication date: December 26, 2013Applicant: MITSUBISHI HEAVY INDUSTRIES ENVIRONMENTAL & CHEMICAL ENGINEERING CO., LTD.Inventors: Jun Sato, Toshimasa Shirai, Yoshihisa Saito, Norio Yoshimitsu, Yasunori Terabe
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Publication number: 20130319299Abstract: In a boiler, a heat exchanger provided in one of two flow paths formed by partitioning a downstream portion of a flow path for exhaust gas discharged from a furnace has a smaller total heat transfer area than a heat exchanger provided in the other of the two flow paths; the exhaust gases discharged from the flow paths to outside the boiler are introduced, without being mixed, into an air heater downstream of the boiler; and, in the air heater, the heat of the exhaust gases is transferred to the primary air and the secondary air so as to heat combustion air.Type: ApplicationFiled: May 28, 2013Publication date: December 5, 2013Applicant: Hitachi, Ltd.Inventors: Masato HANDA, Yoshiharu HAYASHI, Tsuyoshi SHIBATA
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Patent number: 8597525Abstract: Water purification and recycling system having a large reservoir and a small reservoir adapted to provide potable water to a water user structure. After use by the water user structure, wastewater is applied from said water user structure via at least one wastewater path to wastewater treatment apparatus. The wastewater treatment apparatus receives and processes the wastewater using a coal free power plant that operates continuously to produce steam. The wastewater treatment apparatus is also powered by a co-adjuvant gas turbine generator is adapted to generate supplemental steam for the coal free power plant.Type: GrantFiled: May 3, 2011Date of Patent: December 3, 2013Inventor: William E. Coleman
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Publication number: 20130305972Abstract: An apparatus for the simultaneous drying and transport of low-rank coal is described. The apparatus has a first pipe having an inner wall surface surroundingly defining a first flow channel and an outer wall surface; a low-rank coal supply system to supply particulate low-rank coal to an inlet of the first flow channel; a transport gas supply to supply transport gas to an inlet of the first flow channel; a heating apparatus to apply heat to an outer wall surface of the first pipe along at least part of the length thereof for example in the form of a drying fluid supply to supply a drying fluid, configured such that a drying fluid is brought into contact with the outer wall surface of the first pipe along at least part of the length thereof. A system of design of thermal power plant incorporating such an apparatus is also described. A method for the simultaneous drying and transport of low-rank coal is also described. A system and method for supplying dried low-rank coal for combustion are also described.Type: ApplicationFiled: November 25, 2011Publication date: November 21, 2013Applicant: DOOSAN POWER SYSTEMS UK LIMITEDInventors: Chao Hui Chen, Michael John Smith
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Patent number: 8561555Abstract: An oxyfuel combustion boiler plant having a first boiler and a second boiler for injecting gas including oxygen in higher concentration than that in the air, gas including carbon dioxide in higher concentration than that in the air, and fuel from a burner and generating steam by combustion gas in a furnace, respectively, comprising: an exhaust gas supply pipe for supplying exhaust gas discharged from the first boiler to a burner of the second boiler, and a gas flow rate control apparatus for controlling a flow rate of exhaust gas flowing through the exhaust gas supply pipe.Type: GrantFiled: February 18, 2010Date of Patent: October 22, 2013Assignee: Hitachi, Ltd.Inventors: Akihiro Yamada, Tsuyoshi Shibata, Yoshiharu Hayashi
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Publication number: 20130255257Abstract: Disclosed herein is a system comprising a compressor in mechanical communication with a turbine; the compressor being operative to produce compressed air; a premixer; the premixer being operative to mix a fuel with the compressed air; a carbonator being located downstream of the premixer; the carbonator being operative to receive a mixture of carbon dioxide and syngas and to convert a metal oxide into a metal carbonate by reacting it with the carbon dioxide; a calciner; the calciner being operative to receive the metal carbonate from the carbonator; and to dissociate carbon dioxide from the metal carbonate; and a combustor; the combustor being located downstream of the carbonator; where the combustor is operative to combust syngas received from the carbonator.Type: ApplicationFiled: March 30, 2012Publication date: October 3, 2013Applicant: ALSTOM TECHNOLOGY LTD.Inventors: Gian-Luigi Agostinelli, Peter Stuttaford, Richard Carroni, Michal Bialkowski
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Publication number: 20130247800Abstract: A method for drying solid fuels prior to injection and burning in solid fuel boilers is described. High moisture content solid fuels such as bark, sludge, wet coal, etc. must be dried before they can burn. Embodiments of the present invention incorporates a fuel delivery chute integrated with the boiler wall using a flow of combustion gasses and radiant heating to partially dry the solid fuel before it reaches the combustion zone of the boiler. The combustion gasses are drawn through the delivery chute by means of the flowing fuel and air jet inductors that then blows the combustion gasses back into the boiler. A refractory wall separates the fuel chute from the boiler proper, is heated by the combustion in the boiler, and radiates heat to the fuel falling through the fuel chute.Type: ApplicationFiled: October 27, 2012Publication date: September 26, 2013Inventors: Daniel R. Higgins, Eugene Sullivan, Michael J. Kranda, David J. Knighten
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Publication number: 20130239909Abstract: The disclosure provides an arrangement structure suitable for an inverted pulverized coal boiler with ultra-high steam temperature steam parameters, including a hearth, wherein the hearth is communicated with a middle uplink flue, and the top of the middle uplink flue is communicated with that of a tail downlink flue.Type: ApplicationFiled: November 18, 2011Publication date: September 19, 2013Applicant: HUANENG CLEAN ENERGY RESEARCH INSTITUTEInventors: Minhua Jiang, Ping Xiao, Jianzhong Jiang, Li Zhong
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Publication number: 20130244190Abstract: An oxygen combustion system includes a boiler to burn fuel using combustion gas composed of oxygen-rich gas and circulating flue gas, a dust remover disposed in a flue through which flue gas discharged from the boiler flows, a second flue leading the combustion gas to the boiler, the combustion gas being made by mixing the circulating flue gas extracted downstream of the dust remover with the oxygen-rich gas, a combustion gas heater exchanging heat between the flue gas flowing between the boiler and dust remover and the combustion gas flowing through the second flue, and a flue gas cooler disposed between the heater and the dust remover to cool the flue gas. A control unit controls at least one of a flow rate and cooling medium temperature of the flue gas cooler such that temperature of the flue gas introduced into the dust remover will be between 90° C. and 140° C.Type: ApplicationFiled: September 29, 2011Publication date: September 19, 2013Applicants: FORTUM CORPORATION, BABCOCK-HITACHI KABUSHIKI KAISHAInventors: Takahiro Marumoto, Hidehisa Yoshizako, Kenji Kiyama, Kenso Arita, Pauli Dernjatin
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Publication number: 20130233213Abstract: 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: Richard MARTIN, Jeffrey ARMSTRONG, Douglas HAMRIN
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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: 20130220189Abstract: A method for staged combustion in a combustor assembly includes introducing an oxidant stream and a fuel stream at a first location into a combustion chamber to produce a heated stream. A Liquid water stream and an additional oxidant stream, fuel stream or both are then introduced into the heated stream in at least one location along the heated stream downstream from the first location. The additional oxidant stream, fuel stream or both react in the heated stream to generate additional heat that vaporizes liquid water from the liquid water stream to water vapor.Type: ApplicationFiled: February 28, 2012Publication date: August 29, 2013Inventor: Jeffrey A. Mays
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Publication number: 20120318180Abstract: The present invention provides a burner system which uses waste fuels, especially waste plastic fuels. Burner size is minimized by having multiple combustion chambers concentrically located around a rotating screw conveyor. Heat efficiency is improved by having air passages disposed around the combustion chambers, thus preheating air for the combustion prior to its delivery to the combustion chambers, while simultaneously thermally insulating the combustion chambers against the environment. Waste fuel is transported from a fuel hopper to the combustion chambers by a rotating screw conveyor having the spiraling auger blades. Speed of screw conveyor rotation controls the consumption of waste fuel and, thus, the amount of thermal energy generated in the burner. The burner system includes an intelligent control system for controlling operation of the burner system, so that the burner system performs at optimum efficiency, safely and with minimum operator intervention.Type: ApplicationFiled: August 12, 2012Publication date: December 20, 2012Inventors: William Hunkyun BANG, Thomas Anthony Patti PATERNOSTRO