With Boiler Patents (Class 110/234)
  • Patent number: 10280805
    Abstract: 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: Grant
    Filed: September 11, 2015
    Date of Patent: May 7, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Helmut Eckert, Guenter Schmid, Dan Taroata
  • Patent number: 10247049
    Abstract: 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: Grant
    Filed: June 21, 2017
    Date of Patent: April 2, 2019
    Assignee: Bill & Melinda Gates Foundation
    Inventor: Peter Janicki
  • Patent number: 9903583
    Abstract: 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: Grant
    Filed: February 25, 2016
    Date of Patent: February 27, 2018
    Assignee: IHI Corporation
    Inventor: Terutoshi Uchida
  • Patent number: 9890344
    Abstract: 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 o
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: February 13, 2018
    Assignee: HANKOOK TECHNOLOGY INC.
    Inventor: Sung Kon Kim
  • Patent number: 9857074
    Abstract: 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: Grant
    Filed: January 19, 2016
    Date of Patent: January 2, 2018
    Assignee: IHI Corporation
    Inventors: Hideki Ogata, Toshiro Fujimori, Kazuo Miyoshi, Ryo Akiyoshi
  • Patent number: 9845957
    Abstract: 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: Grant
    Filed: December 1, 2015
    Date of Patent: December 19, 2017
    Inventors: Richard L. Hill, Don P. Alexander
  • Patent number: 9719729
    Abstract: 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: Grant
    Filed: April 10, 2014
    Date of Patent: August 1, 2017
    Inventor: Vince Rottinghaus
  • Publication number: 20150107497
    Abstract: 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: Application
    Filed: October 21, 2014
    Publication date: April 23, 2015
    Inventor: Anthony Hughey
  • Patent number: 8980206
    Abstract: 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: Grant
    Filed: November 13, 2013
    Date of Patent: March 17, 2015
    Assignee: Babcock Borsig Steinmueller GmbH
    Inventors: Stefan Hamel, Christian Storm
  • Publication number: 20150013300
    Abstract: 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: Application
    Filed: June 3, 2014
    Publication date: January 15, 2015
    Applicant: Washington University
    Inventors: Richard L. Axelbaum, Benjamin M. Kumfer, Fei Xia, Akshay Gopan, Bhupesh Dhungel
  • Publication number: 20140352634
    Abstract: 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: Application
    Filed: November 21, 2012
    Publication date: December 4, 2014
    Inventors: Eugene SULLIVAN, Daniel R. HIGGINS
  • Patent number: 8882493
    Abstract: 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: Grant
    Filed: March 17, 2011
    Date of Patent: November 11, 2014
    Assignee: Nexterra Systems Corp.
    Inventors: Hendrick Vandergriendt, Duncan Meade, Yan Li, Nebojsa Plavsic
  • Patent number: 8863675
    Abstract: 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: Grant
    Filed: December 7, 2009
    Date of Patent: October 21, 2014
    Assignee: MVV Umwelt GmbH
    Inventors: Johannes Günther, Hansjörg Roll, Peter Knapp, Uwe Zickert
  • Publication number: 20140308620
    Abstract: 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: Application
    Filed: January 15, 2013
    Publication date: October 16, 2014
    Applicant: 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
  • Publication number: 20140309475
    Abstract: 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: Application
    Filed: November 18, 2013
    Publication date: October 16, 2014
    Inventors: Robert Van Naarden, Marco Bonilla, Hans Jasper, Robert Jasper, Kuni Yoshikawa, Toshifumi Yamada, Matthew Song
  • Publication number: 20140305357
    Abstract: 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: Application
    Filed: April 7, 2014
    Publication date: October 16, 2014
    Inventors: James F. DeSELLEM, Karl M. HEIL, Jeremiah J. YODER, Albert D. LaRUE, Mikhail MARYAMCHIK, William R. STIRGWOLT
  • Publication number: 20140299027
    Abstract: 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: Application
    Filed: January 19, 2012
    Publication date: October 9, 2014
    Inventors: Qinggang Lu, Ming Gao, Yunkai Sun, Guoliang Song, Xiaofang Wang, Yongjie Na, Dongyu Wang, Haigang Wang
  • Publication number: 20140290541
    Abstract: 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: Application
    Filed: June 16, 2014
    Publication date: October 2, 2014
    Inventors: WILLIAM HUNKYUN Bang, THOMAS ANTHONY PATTI PATERNOSTRO
  • Publication number: 20140290542
    Abstract: 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: Application
    Filed: June 16, 2014
    Publication date: October 2, 2014
    Inventors: WILLIAM HUNKYUN Bang, THOMAS ANTHONY PATTI PATERNOSTRO
  • Publication number: 20140295358
    Abstract: 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: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: OILON OY
    Inventors: Reijo LYLYKANGAS, Eero PEKKOLA, Tero TULOKAS
  • Publication number: 20140223909
    Abstract: 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: Application
    Filed: September 18, 2012
    Publication date: August 14, 2014
    Applicant: DOOSAN BABCOCK LIMITED
    Inventors: Konrad Jerzy Kuczynski, Douglas John Spalding
  • Patent number: 8795416
    Abstract: 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: Grant
    Filed: October 12, 2009
    Date of Patent: August 5, 2014
    Assignee: Babcock & Wilcox Power Generation Group, Inc.
    Inventors: Dennis K. McDonald, Kevin J. Rogers
  • Publication number: 20140190698
    Abstract: 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: Application
    Filed: January 4, 2013
    Publication date: July 10, 2014
    Applicant: PRATT & WHITNEY ROCKETDYNE, INC.
    Inventor: Jeffrey A. Mays
  • Publication number: 20140144137
    Abstract: 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: Application
    Filed: November 12, 2010
    Publication date: May 29, 2014
    Inventor: Monte D. DeWitt
  • Publication number: 20140137779
    Abstract: 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: Application
    Filed: October 8, 2013
    Publication date: May 22, 2014
    Applicant: Clean Energy Systems, Inc.
    Inventors: Keith L. Pronske, Roger A. Anderson, Bradley J. Anderson, Daniel A. Greisen
  • Publication number: 20140083374
    Abstract: 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: Application
    Filed: December 2, 2011
    Publication date: March 27, 2014
    Applicant: ALSTOM TECHNOLOGY, LTD.
    Inventors: Gerhard Weissinger, Thoralf Berndt, Ralph Dobrowolski, Andreas Marquard
  • Publication number: 20140069306
    Abstract: 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: Application
    Filed: September 13, 2012
    Publication date: March 13, 2014
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Satoru Sugita, Shintaro Honjo, Takuya Okamoto
  • Publication number: 20140011141
    Abstract: 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: Application
    Filed: March 7, 2012
    Publication date: January 9, 2014
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Keigo Matsumoto, Kazuhiro Domoto, Naofumi Abe, Jun Kasai
  • Publication number: 20140004471
    Abstract: 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: Application
    Filed: March 17, 2011
    Publication date: January 2, 2014
    Applicant: NEXTERRA SYSTEMS CORP.
    Inventors: Hendrick Vandergriendt, Duncan Meade, Yan Li, Nebojsa Plavsic
  • Publication number: 20130340689
    Abstract: 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: Application
    Filed: March 18, 2011
    Publication date: December 26, 2013
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENVIRONMENTAL & CHEMICAL ENGINEERING CO., LTD.
    Inventors: Jun Sato, Toshimasa Shirai, Yoshihisa Saito, Norio Yoshimitsu, Yasunori Terabe
  • Publication number: 20130319299
    Abstract: 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: Application
    Filed: May 28, 2013
    Publication date: December 5, 2013
    Applicant: Hitachi, Ltd.
    Inventors: Masato HANDA, Yoshiharu HAYASHI, Tsuyoshi SHIBATA
  • Patent number: 8597525
    Abstract: 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: Grant
    Filed: May 3, 2011
    Date of Patent: December 3, 2013
    Inventor: William E. Coleman
  • Publication number: 20130305972
    Abstract: 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: Application
    Filed: November 25, 2011
    Publication date: November 21, 2013
    Applicant: DOOSAN POWER SYSTEMS UK LIMITED
    Inventors: Chao Hui Chen, Michael John Smith
  • Patent number: 8561555
    Abstract: 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: Grant
    Filed: February 18, 2010
    Date of Patent: October 22, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Akihiro Yamada, Tsuyoshi Shibata, Yoshiharu Hayashi
  • Publication number: 20130255257
    Abstract: 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: Application
    Filed: March 30, 2012
    Publication date: October 3, 2013
    Applicant: ALSTOM TECHNOLOGY LTD.
    Inventors: Gian-Luigi Agostinelli, Peter Stuttaford, Richard Carroni, Michal Bialkowski
  • Publication number: 20130247800
    Abstract: 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: Application
    Filed: October 27, 2012
    Publication date: September 26, 2013
    Inventors: Daniel R. Higgins, Eugene Sullivan, Michael J. Kranda, David J. Knighten
  • Publication number: 20130244190
    Abstract: 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: Application
    Filed: September 29, 2011
    Publication date: September 19, 2013
    Applicants: FORTUM CORPORATION, BABCOCK-HITACHI KABUSHIKI KAISHA
    Inventors: Takahiro Marumoto, Hidehisa Yoshizako, Kenji Kiyama, Kenso Arita, Pauli Dernjatin
  • Publication number: 20130239909
    Abstract: 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: Application
    Filed: November 18, 2011
    Publication date: September 19, 2013
    Applicant: HUANENG CLEAN ENERGY RESEARCH INSTITUTE
    Inventors: Minhua Jiang, Ping Xiao, Jianzhong Jiang, Li Zhong
  • Publication number: 20130232945
    Abstract: 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: Application
    Filed: March 9, 2012
    Publication date: September 12, 2013
    Applicant: FlexEnergy, Inc.
    Inventors: Jeffrey ARMSTRONG, Richard MARTIN, Douglas HAMRIN
  • Publication number: 20130233213
    Abstract: 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: Application
    Filed: March 9, 2012
    Publication date: September 12, 2013
    Applicant: FLEXENERGY, INC.
    Inventors: Richard MARTIN, Jeffrey ARMSTRONG, Douglas HAMRIN
  • Publication number: 20130232947
    Abstract: 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: Application
    Filed: March 9, 2012
    Publication date: September 12, 2013
    Applicant: FLEXENERGY, INC.
    Inventors: Jeffrey ARMSTRONG, Richard MARTIN, Douglas HAMRIN
  • Publication number: 20130220189
    Abstract: 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: Application
    Filed: February 28, 2012
    Publication date: August 29, 2013
    Inventor: Jeffrey A. Mays
  • Publication number: 20120318180
    Abstract: 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: Application
    Filed: August 12, 2012
    Publication date: December 20, 2012
    Inventors: William Hunkyun BANG, Thomas Anthony Patti PATERNOSTRO
  • Publication number: 20120315586
    Abstract: A method and apparatus for combustion in which a pressurized preheated liquid fuel is atomized and a portion thereof flash vaporized, creating a mixture of fuel vapor and liquid droplets. The mixture is mixed with primary combustion oxidant, producing a fuel/primary oxidant mixture which is then injected into a primary combustion chamber in which the fuel/primary oxidant mixture is partially combusted, producing a secondary gaseous fuel containing hydrogen and carbon oxides. The secondary gaseous fuel is mixed with a secondary combustion oxidant and injected into the second combustion chamber wherein complete combustion of the secondary gaseous fuel is carried out. The resulting second stage flue gas containing very low amounts of NOx is then vented from the second combustion chamber.
    Type: Application
    Filed: June 9, 2011
    Publication date: December 13, 2012
    Applicant: GAS TECHNOLOGY INSTITUTE
    Inventors: Vincent GARD, Dennis A. CHOJNACKI, Ioseph K. RABOVITSER
  • Publication number: 20120312254
    Abstract: A steam generation boiler includes a bottom portion and a roof portion, as well as walls that extend vertically between the bottom portion and the roof portion, thus forming a reaction chamber of the steam generation boiler, the walls of which reaction chamber embody a structure that includes steam generator pipes. The steam generation boiler includes, in its lower portion, at least one wall section tapering towards the bottom portion. A first group of steam pipes in the tapering wall section is arranged to pass from the wall plane into the reaction chamber and to extend from the wall plane to the bottom portion of the steam generation boiler on the side of the reaction chamber forming a wall in the reaction chamber, and a second group of steam pipes is arranged to pass to the bottom portion along the wall plane.
    Type: Application
    Filed: January 12, 2011
    Publication date: December 13, 2012
    Applicant: Foster Wheeler Energia OY
    Inventor: Pentti Lankinen
  • Publication number: 20120288804
    Abstract: Method and device for operating a conveyor for a combustion product, in which, during the conveyance, through the detection and analysis of properties (such as volume flow, mass flow, moisture, temperature, grain size) of the combustion product by means of microwaves, a control of transport parameters (such as transport speed, cooling of the combustion product, supply of combustion product, degree of crushing) is realized. It is herein possible to protect the conveyor thermally and mechanically and, at the same time, to ensure real-time regulation of the composition and quantity of the combustion product for following treatment steps.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 15, 2012
    Applicant: Clyde Bergemann DRYCON GmbH
    Inventor: Rafael MORENO RUEDA
  • Publication number: 20120285353
    Abstract: The present invention provides a novel process for quenching heat, scrubbing, cleaning and neutralizing the hot and dirty fossil fuel fired flue gas liberated by a fossil fuel fired boiler using the high temperature and high pressure present in fossil fuel fired boiler blow-down comprising the steps of quenching the fossil fuel fired flue gas by evaporating sufficient quantity of water from sea water/scrubbing liquid and mixing vapors thus generated with hot and dirty flue gas; using the high temperature and high pressure present in fossil fuel fired boiler blow-down (waste water) for atomizing/spraying high alkalinity sea water/scrubbing liquid on said flue gas to neutralize the acidic substances in said flue gas.
    Type: Application
    Filed: December 1, 2010
    Publication date: November 15, 2012
    Inventor: Subrahmanyam Kumar
  • Publication number: 20120272874
    Abstract: The present invention discloses a biomass fuel internal circulation mechanical fluidized-bed corner tube intelligent boiler which is highly effective in energy-conservation and emission-reduction, which comprises a primary combustion chamber, a secondary combustion chamber, a burning-out chamber, a high temperature multi-tube cyclone dust collector, a heat convection pipe bundle, the hearth of the primary combustion chamber consists of a square membrane water-cooled wall and a profiled seat with a square top and a circular bottom, at the four corners of the seat, there are mounted Venturi tube internal circulators, at the bottom of the hearth, there is mounted a mechanical fluidizing machine; the profiled cyclone separation hearth of the secondary combustion chamber consists of a square membrane water-cooled wall, a profiled seat with a square top and a circular bottom, a profiled fume-venting tube, at the bottom of the hearth, there is mounted a mechanical fluidizing machine; the burning-out chamber is conne
    Type: Application
    Filed: May 24, 2011
    Publication date: November 1, 2012
    Applicant: SHANDONG UCR BIOMASS ENERGY CO., LTD.
    Inventor: Zhijun Yang
  • Publication number: 20120266793
    Abstract: Described is an integrated process of cogasifying an engineered fuel, formulated to be suitable for working under reducing environment, with coal and cofiring another engineered fuel, formulated to be suitable for working under oxidizing environment, with coal to produce electric power.
    Type: Application
    Filed: April 23, 2012
    Publication date: October 25, 2012
    Applicant: RE COMMUNITY ENERGY, LLC
    Inventors: James W. BOHLIG, Dingrong BAI
  • Publication number: 20120260834
    Abstract: A boiler control system for efficiently controlling the operation of a packaged boiler is provided. The system includes a combustion air control system, a fuel control system, a flue gas sensing system, and a boiler controller. The boiler controller is in operative communication with the combustion air control system, fuel control system, and the flue gas sensing system. Based upon a system demand, the boiler controller controls coarse-level operation of the combustion air control system and the fuel control system. The flue gas sensing system may include an oxygen sensor and a flue gas differential sensor to sense a change in a characteristic of the flue gas. When the flue gas differential sensor senses a change in the flue gas characteristic that meets a flue gas differential setpoint, the boiler controller controls the fine-level operation of the boiler.
    Type: Application
    Filed: June 28, 2012
    Publication date: October 18, 2012
    Inventor: Warren G. Knorr, JR.