With Combustible Gas Generator Patents (Class 60/39.12)
  • Patent number: 10927757
    Abstract: A method of reducing rotor bow in a high pressure rotor of a gas turbine engine that has in axial flow a low pressure rotor and a high pressure rotor. The method involves storing bleed air from the gas turbine engine when the engine is running to provide stored pneumatic energy; and using that stored pneumatic energy after the engine has been shut-down to rotate the high pressure rotor at a speed and for a duration that reduces rotor bow. A gas turbine engine wherein rotor bow in the high pressure rotor after engine shut-down has been reduced by carrying out the aforesaid method is also disclosed.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: February 23, 2021
    Assignee: ROLLS-ROYCE PLC
    Inventor: Andrew Stevenson
  • Patent number: 10900418
    Abstract: A combined cycle power plant that includes a gas turbine and HRSG engaged with a steam turbine via a water steam cycle having higher and lower pressure levels. The CCPP further includes a fuel line and fuel preheater. A higher pressure feedwater line delivers higher pressure feedwater to a higher pressure feedwater branch that extends through the fuel preheater, the high pressure feedwater branch including upstream and downstream segments defined to each side of the fuel preheater. A lower pressure feedwater line delivers lower pressure feedwater to a lower pressure feedwater branch. The downstream segment of the higher pressure feedwater branch is combined with the lower pressure feedwater branch at a junction point and a combined feedwater line extends therefrom. A first heat exchanger exchanges heat between the combined feedwater line and fuel line. A second heat exchanger exchanges heat between the higher pressure feedwater branch and fuel line.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: January 26, 2021
    Assignee: General Electric Company
    Inventors: Kenneth Eugene Selfridge, Douglas Frank Beadie, Alberto Jose Negroni
  • Patent number: 10859264
    Abstract: The present disclosure relates to apparatuses and methods that are useful for one or more aspects of a power production plant. More particularly, the disclosure relates to combustor apparatuses and methods for a combustor adapted to utilize different fuel mixtures derived from gasification of a solid fuel. Combustion of the different fuel mixtures within the combustor can be facilitated by arranging elements of the combustor controlled so that a defined set of combustion characteristics remains substantially constant across a range of different fuel mixtures.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: December 8, 2020
    Assignee: 8 Rivers Capital, LLC
    Inventors: Jeremy Eron Fetvedt, Xijia Lu, Brent Gregory, Chris Bonilha, James Lenertz, Stefan Tschirren, Hassan Abdulsater
  • Patent number: 10670334
    Abstract: A cryogenic technology for the cost-efficient capture of each known component of emissions, such as carbon dioxide, sulfur oxides, nitrogen oxides, carbon monoxide, any other acid vapor, mercury, steam, in a liquefied or frozen/solidified form, and unreacted nitrogen (gas) from industrial plants, such that each of the components is captured separately with minimum use of energy and is industrially useful.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: June 2, 2020
    Inventors: Dilip Kumar De, Idowu Ayodele Oduniyi
  • Patent number: 10634013
    Abstract: A proposed method provides a highly efficient fueled power output augmentation of the liquid air energy storage (LAES) through its integration with the semi-closed CO2 bottoming cycle. It combines the production of liquid air in air liquefier during LAES charge using excessive power from the grid and an effective recovery of stored air for production of on-demand power in the fueled supercharged reciprocating internal combustion engine (ICE) and associated expanders of the power block during LAES discharge. A cold thermal energy of liquid air being re-gasified is recovered for cryogenic capturing most of CO2 emissions from the facility exhaust with following use of the captured CO2 in the semi-closed bottoming cycle, resulting in enhancement of total LAES facility discharge power output and suppressing the thermal NOx formation in the ICE.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: April 28, 2020
    Inventor: Stanislav Sinatov
  • Patent number: 10577985
    Abstract: The purpose of the present invention is to maintain the intake pressure of a water supply pump at an operable pressure. A boiler is provided with: condensate pumps (a condensate pump and an auxiliary condensate pump); a branch line that causes water delivered by the condensate pumps to branch; a drum (a low-pressure drum) that is connected to one (a low-pressure branch line) of two lines into which the branch line branches; and a water supply pump that is connected to the other (a high-pressure branch line) of the two lines into which the branching line branches and that pumps water to an evaporator (a high-pressure evaporator). The boiler is additionally provided with pressure applying means that guides a portion of the water in the drum to the water supply pump side when the intake pressure on the inlet side of the water supply pump has become lower than a predetermined pressure.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: March 3, 2020
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventor: Jun Taguchi
  • Patent number: 10578028
    Abstract: A gas turbine engine is provided having a compressor section, a combustion section, and a turbine section. The compressor section includes one or more compressors and the turbine section includes one or more turbines. The one or more compressors and the one or more turbines are each rotatable about a longitudinal centerline of the gas turbine engine. Additionally, a bleed air flowpath is provided extending between an inlet in airflow communication with the compressor section and an outlet. An auxiliary turbine is positioned in airflow communication with the bleed air flowpath for extracting energy from a flow of bleed air through the bleed air flowpath.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 3, 2020
    Assignee: General Electric Company
    Inventor: Thomas Lee Becker, Jr.
  • Patent number: 10533494
    Abstract: A solar chemically recuperated gas turbine system includes an exhaust-gas reformer, a solar reformer and a gas turbine unit with a combustion chamber. The reaction outlet of the exhaust-gas reformer is connected to the inlet of the solar reformer, the flue gas side inlet of the exhaust-gas reformer is connected to the exhaust-gas outlet of the gas turbine. The solar reformer outlet is connected to the combustion chamber inlet. Combustion gas drives the gas turbine after fuel burns in the combustion chamber, and the exhaust gas enters the exhaust-gas reformer. Fuel and steam are mixed and enter the reaction side of the exhaust-gas reformer through a fuel inlet. A reforming reaction between the fuel and steam under heating of the exhaust gas generates syngas. A further reforming reaction occurs by absorbing concentrated solar energy after the syngas enters the solar reformer, and the reactant is provided to combustion chamber.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: January 14, 2020
    Assignee: Zhejiang University
    Inventors: Gang Xiao, Tianfeng Yang, Mingjiang Ni, Zhongyang Luo, Xiang Gao, Kefa Cen, Mengxiang Fang, Jinsong Zhou, Zhenglun Shi, Leming Cheng, Qinhui Wang, Shurong Wang, Chunjiang Yu, Tao Wang, Chenghang Zheng
  • Patent number: 10487699
    Abstract: Certain aspects of natural gas liquid fractionation plant waste heat conversion to cooling capacity using Kalina Cycle can be implemented as a system, which includes a waste heat recovery heat exchanger to heat a buffer fluid stream by exchange with a heat source in a natural gas liquid fractionation plant. The system includes a Kalina cycle energy conversion system including one or more first energy conversion heat exchangers to heat a first portion of a working fluid by exchange with the heated buffer fluid stream, a separator to receive the heated working fluid and to output a vapor stream of the working fluid and the liquid stream of the working fluid, and a cooling subsystem including a first cooling element to condense the vapor stream of the working fluid and a second cooling element configured to cool a process fluid stream from the natural gas liquid fractionation plant by exchange with the condensed vapor stream of the working fluid.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: November 26, 2019
    Assignee: Saudi Arabian Oil Company
    Inventors: Mahmoud Bahy Mahmoud Noureldin, Akram Hamed Mohamed Kamel
  • Patent number: 10451359
    Abstract: Certain aspects of natural gas liquid fractionation plant waste heat conversion to power using Kalina Cycle can be implemented as a system. The system includes a waste heat recovery heat exchanger configured to heat a buffer fluid stream by exchange with a heat source in a natural gas liquid fractionation plant. The system includes a Kalina cycle energy conversion system, which includes one or more first energy conversion heat exchangers configured to heat a working fluid by exchange with the heated buffer fluid stream, a separator configured to receive the heated working fluid and to output a vapor stream of the working fluid and the liquid stream of the working fluid, and a turbine and a generator, wherein the turbine and generator are configured to generate power by expansion of the vapor stream of the working fluid.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: October 22, 2019
    Assignee: Saudi Arabian Oil Company
    Inventors: Mahmoud Bahy Mahmoud Noureldin, Akram Hamed Mohamed Kamel
  • Patent number: 10443137
    Abstract: A hydrogen gas generator system comprises a reactor stack adapted to perform electrolysis on water in an electrolyte solution, the reactor stack comprising a plurality of spaced apart electrode plates and electrolyte solution disposed between the plates, each plate having an upper outlet aperture and a lower inlet aperture to allow movement of electrolyte solution across the plates. A separator is configured to receive a mixture of gas and electrolyte solution from a top of the reactor stack and separate the gas from the electrolyte solution. A gas outlet configured to remove gas from the separator, and an electrolyte solution inlet configured to return electrolyte solution from the separator to a bottom of the reactor stack.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: October 15, 2019
    Inventor: Nigel Williamson
  • Patent number: 10415467
    Abstract: Provided is an integrated coal gasification combined cycle equipped with: a gasifier that generates combustible gas from pulverized coal; a gas cooler; gas turbine equipment; an auxiliary fuel supply unit that supplies an auxiliary fuel to the gas turbine equipment; a heat recovery steam generator; steam turbine equipment; generators; and a circulation line unit that circulates cooling water. The heat recovery steam generator has a first medium-pressure coal economizer and a second medium-pressure coal economizer. When the combustible gas generated from the pulverized coal is burned, a serial heat exchange line is formed wherein cooling water passes through the first medium-pressure coal economizer, the second medium-pressure coal economizer, and the gas cooler. When the auxiliary fuel is burned, separate heat exchange lines are formed, wherein the cooling water separately passes through the first medium-pressure coal economizer and the second medium-pressure coal economizer.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: September 17, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Naoshige Yoshida, Koichi Sakamoto, Kenichiro Kosaka, Tetsuya Kizu, Yoshinori Koyama, Takashi Fujii, Osamu Shinada
  • Patent number: 10358947
    Abstract: This combined cycle gas turbine plant has a gas turbine (104) and a steam turbine (106) mounted on the same shaft. A control system is configured for switching the plant from a rated mode of operation, in which the plant is operated on gas turbine output and steam turbine output, to a reduced load mode of operation, in which the plant is operated on gas turbine output alone. The switch from the rated mode of operation to the reduced load mode of operation occurs if plant demand decreases below a predetermined threshold. The steam turbine is run under full speed no load conditions in the reduced load mode of operation, and is heated using controlled steam admission, to maintain the steam turbine in a heated ‘stand-by’ state.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: July 23, 2019
    Assignees: MITSUBISHI HITACHI POWER SYSTEMS, LTD., MITSUBISHI HITACHI POWER SYSTEMS EUROPE, LTD.
    Inventors: Yoshiyuki Yokoyama, Jose Manuel Martinez, Elvio Rubio, Pablo Ratia
  • Patent number: 10280809
    Abstract: A method for operating a combined cycle power plant (CCPP) and improving a part load operation of the CCPP is provided. The CCPP may include at least a gas turbine, a heat recovery steam generator (HRSG) located downstream of the gas turbine, a main steam turbine, and a supercritical steam turbine. The HRSG may include a low pressure steam system, an intermediate pressure steam system, and a high pressure steam system. To improve the part load efficiency of the CCPP, a base load operation of the CCPP may be initiated with supercritical pressure, via the supercritical steam turbine, such that the efficiency impact resulting from the part load operation is reduced.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: May 7, 2019
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Michael S. Briesch, Ankur Deshmukh
  • Patent number: 10215059
    Abstract: A system and method for active draft control through a combined cycle power plant (CCPP) can initiate a CCPP shutdown, activate the recirculated exhaust gas (REG) system for the turbomachine; measure a HRSG airflow through the HRSG; communicate the HRSG airflow to a controller configured to condition a control signal; and adjust a recirculated exhaust gas volume in accordance with the control signal.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: February 26, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Wolfgang Franz Dietrich Mohr, Kurt Rechsteiner, David Martin Johnson, Kenneth Damon Black
  • Patent number: 10201800
    Abstract: The present disclosure relates, according to some embodiments, reactive self-indicating adsorbent materials, methods, and systems. A system may comprise, for example, a reactive self-indicating adsorbent material, wherein the reactive self-indicating adsorbent material comprises at least one super paramagnetic particle and a semi permeable support, wherein the at least one super paramagnetic particle is configured such that at least one magnetic property of the at least one super paramagnetic particle changes upon contact with an adsorbate; and/or at least one detector configured and arranged to detect the at least one magnetic property.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: February 12, 2019
    Assignee: Leidos, Inc.
    Inventor: Thomas Grant Glover
  • Patent number: 10113124
    Abstract: An IGCC plant includes a coal gasifier that gasifies coal by using an oxidizer, a gas turbine that is driven by combustion gas generated by combustion of fuel gas obtained by purifying gas generated by the coal gasifier in gas clean-up equipment, and an oxidizer supply path for supplying air extracted from an air compressor of the gas turbine or oxygen separated from the air as an oxidizer for the coal gasifier. A control unit (50) for the gasification power generation plant controls the amount of the oxidizer that is supplied to the coal gasifier to be less than or equal to a predetermined upper-limit value, while allowing deviation of an air ratio from a predetermined set value, the air ratio representing the ratio of the amount of air that is supplied to the coal gasifier relative to a theoretical amount of air for combustion of carbon, in accordance with variations in an operating-state quantity of the coal gasifier or variations in a load of the IGCC plant.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: October 30, 2018
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Ken Tamura, Takashi Fujii, Takanori Tsutsumi, Takashi Kijima
  • Patent number: 10059893
    Abstract: A method for producing syngas from preferably vegetal biomass is described. The method provides for the use of a fixed bed gasifier, equipped with two reactors. The biomass is fed to both reactors together with a primary flow rate of air. Advantageously, the method according to the present invention is different from the known art since a secondary flow rate of air is withdrawn from the first reactor at the area where the biomass dries, and fed to the second reactor at the area where the biomass dries, and vice versa, alternately during time. Alternatively, an oscillating air flow is created in each reactor. The achievable result is a greater syngas production, but not exclusively. The syngas quality is improved too, since the biomass has a longer time for completing the gasification reactions.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: August 28, 2018
    Assignee: TURBODEN S.R.L.
    Inventors: Mario Gaia, Roberto Bini
  • Patent number: 10047671
    Abstract: The present invention provides methods and system for power generation using a high efficiency combustor in combination with a CO2 circulating fluid. The methods and systems advantageously can make use of a low pressure ratio power turbine and an economizer heat exchanger in specific embodiments. Additional low grade heat from an external source can be used to provide part of an amount of heat needed for heating the recycle CO2 circulating fluid. Fuel derived CO2 can be captured and delivered at pipeline pressure. Other impurities can be captured.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: August 14, 2018
    Assignee: 8 Rivers Capital, LLC
    Inventors: Rodney John Allam, Glenn William Brown, Jr., Miles R. Palmer
  • Patent number: 10047638
    Abstract: Disclosed is a heat energy recovery system including: a heat energy recovery circuit that causes a working medium to circulate by means of a circulation pump to exchange heat with supercharged air from a supercharger via a first heater and exchange heat with steam from an exhaust-gas economizer via a second heater, in order to integrally drive a turbine and a generator; and a controller that performs stop control to stop the circulation pump based on the flow state of the steam in a first steam flow path that causes the steam to flow from the exhaust-gas economizer to a soot blower.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: August 14, 2018
    Assignees: Kobe Steel, Ltd., ASAHI SHIPPING CO., LTD., TSUNEISHI SHIPBUILDING Co., Ltd., MIURA Co., Ltd.
    Inventors: Shigeto Adachi, Yutaka Narukawa, Tetsuro Fujii, Kazuya Arahira, Masakazu Yamamoto, Yutaka Kobayashi, Toshio Sageshima
  • Patent number: 9988983
    Abstract: A power generation system including a gasifier for receiving and converting coal-water slurry to a fuel stream, and a quench device for cooling the fuel stream to generate a cooled down fuel stream. The quench device includes a water quench ring, which is able to spray water to cool the fuel stream passing therethrough. The system further includes a separating device, which includes a separator and a high temperature filter for removing rough and fine particles from the cooled down fuel stream respectively, an expander for receiving and utilizing energy in the fuel stream with solids removed to generate power, during which temperature and pressure of the fuel stream drop and an expanded fuel stream is generated, an acid gas removal unit for removing acid gases from the expanded fuel stream, and a gas turbine combine cycle for generating power from the fuel stream with acid gases removed.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: June 5, 2018
    Assignee: General Electric Company
    Inventors: Ping Yu, Lishun Hu
  • Patent number: 9938895
    Abstract: A method for operating a compressed air energy storage system is provided. The method can include compressing a process gas with a compressor train to produce a compressed process gas and storing the compressed process gas in a compressed gas storage unit. The method can also include extracting the compressed process gas from the compressed gas storage unit to an expansion assembly through a feed line. A valve assembly fluidly coupled to the feed line can be actuated to control a mass flow of the compressed process gas from the compressed gas storage unit to the expansion assembly. The method can further include heating the compressed process gas in a preheater fluidly coupled to the feed line upstream from the expansion assembly, and generating a power output with the expansion assembly.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: April 10, 2018
    Assignee: DRESSER-RAND COMPANY
    Inventors: Jason M. Kerth, George M. Lucas, Stephen S. Rashid
  • Patent number: 9863285
    Abstract: A power generation system may include a generator; a gas turbine system for powering the generator, the gas turbine system including a turbine component, an integral compressor and a combustor to which air from the integral compressor and fuel are supplied, the combustor arranged to supply hot combustion gases to the turbine component, and the integral compressor having a flow capacity greater than an intake capacity of at least one of the combustor and the turbine component, creating an excess air flow. A first control valve system controls flow of the excess air flow along an excess air flow path to a supplemental gas turbine system. The excess air flow may be combusted with a fuel and supplied to the supplemental gas turbine system. An eductor may be positioned in the excess air flow path for using the excess air flow as a motive force to augment the excess air flow with additional gas.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: January 9, 2018
    Assignee: General Electric Company
    Inventors: Sanji Ekanayake, Thomas John Freeman, John David Memmer, Timothy Joseph Rehg, Alston Ilford Scipio
  • Patent number: 9856197
    Abstract: Disclosed is a method that reforms flare gas or other raw natural gas source, using air without steam, to directly produce dimethyl ether (DME), a direct diesel substitute. The method first reforms an air-natural gas mixture at ambient atmospheric pressures, and then compresses the resulting CO-hydrogen-nitrogen gas mixture to 100-2,000 psi, and feeds it through a combined reactor which reacts the gas mixture directly into DME. The nitrogen is returned to the atmosphere. DME is an excellent diesel fuel, and can be used to displace significantly costlier and dirtier petroleum-based diesel fuel, while solving a critical problem with flaring or other wasted natural gas. For example, the roughly 120 billion cubic feet per year that was flared in North Dakota in 2014 could be converted into over 3 million tons of DME using the disclosed method.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: January 2, 2018
    Assignee: Pioneer Energy, Inc.
    Inventors: Robert M Zubrin, Boris Nizamov, Thomas L Henshaw, Adam M Kortan, James Siebarth, Colin Apke, Mark Berggren
  • Patent number: 9845667
    Abstract: The hybrid solar thermal enhanced oil recovery system with an oxy-fuel combustor is an enhanced oil recovery system utilizing solar thermal enhanced oil recovery during the daytime and utilizing an oxy-fuel combustor in the nighttime. A solar heater is used for the solar thermal enhanced oil recovery, generating steam injected into an oil field having an oil well for enhanced oil recovery. During the nighttime, when solar heating is not available, an oxy-fuel combustor produces carbon dioxide and nitrogen. The carbon dioxide is injected into the oil field for miscible enhanced oil recovery and the nitrogen is separately injected into the oil field for immiscible enhanced oil recovery.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: December 19, 2017
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Esmail Mohamed Ali Mokheimer, Mohamed Abdel-Aziz Mostafa Habib
  • Patent number: 9782718
    Abstract: Sweep-based gas separation processes for reducing carbon dioxide emissions from gas-fired power plants. The invention involves at least two compression steps, a combustion step, a carbon dioxide capture step, a power generate step, and a sweep-based membrane separation step. One of the compression steps is used to produce a low-pressure, low-temperature compressed stream that is sent for treatment in the carbon dioxide capture step, thereby avoiding the need to expend large amounts of energy to cool an otherwise hot compressed stream from a typical compressor that produces a high-pressure stream, usually at 20-30 bar or more.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: October 10, 2017
    Inventors: Richard W Baker, Timothy C Merkel
  • Patent number: 9771859
    Abstract: A hydrogen generating apparatus and control system for use in an internal combustion engine of a vehicle for increasing the efficiency of the engine and decreasing emissions from the engine in a safe manner for a moving vehicle, having close-spaced metal electrolysis plates in the generator housing, configured to inject hydrogen into the intake manifold or alternatively into the combustion chamber, and monitoring and controlling gas level, liquid levels, temperature, pressure, flow rate, electric current, and tachometer, with monitoring and overriding control from the cab of the vehicle.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: September 26, 2017
    Inventor: Christopher Haring
  • Patent number: 9771658
    Abstract: A method of safely generating hydrogen gas for use in motor vehicles to increase the performance and decrease the emissions of the internal-combustion engine of the motor vehicle, and of controlling the safe generation and use of hydrogen gas in motor vehicles, using a hydrogen generator having close-spaced metal electrolysis plates in the generator housing, configured to inject hydrogen into the intake manifold or alternatively into the combustion chamber, and a control system monitoring and controlling gas level, liquid levels, temperature, pressure, flow rate, electric current, and tachometer, with monitoring and overriding control from the cab of the vehicle.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: September 26, 2017
    Inventor: Christopher Haring
  • Patent number: 9719417
    Abstract: A system and method for the simultaneous sequestration of CO2, production of hydrogen, and production of electricity at any iron and steel industries is described. In one illustrative example, the raw materials particularly used in a blast furnace can also be used for locking CO2 gas in the form of siderite. Siderite, thus formed, can be decomposed to generate pure CO2 gas. Eventually, the generated pure CO2 gas can be sequestered underground, sold or used for oil gas recovery or for other applications.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: August 1, 2017
    Assignee: THE FLORIDA INTERNATIONAL UNIVERSITY BOARD OF TRUSTEES
    Inventors: Sushant Kumar, Vadym Drozd, Andriy Durygin, Surendra K. Saxena
  • Patent number: 9719038
    Abstract: A gasifier start-up method for a gasifier capable of preventing or inhibiting a temporary occurrence of black smoke when a gasifier is started-up. A gasifier start-up method for a gasifier, in which a gasifying agent and a solid carbonaceous fuel are supplied and gasified, includes a start-up burner igniting step of supplying a start-up fuel and oxygen-containing gas to a start-up burner and igniting the start-up fuel and oxygen-containing gas, under an inert atmosphere in which an inside of the gasifier around the start-up burner is filled with inert gas; and an oxygen-containing-gas supply adjusting step of adjusting the supply of the oxygen-containing gas such that combustion gas obtained after the combustion reaction of the start-up fuel and the oxygen-containing gas becomes the inert gas, which contains little oxygen.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: August 1, 2017
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Shogo Yoshida, Katsuhiko Yokohama, Keisuke Matsuo
  • Patent number: 9611756
    Abstract: A system includes a gas turbine engine that includes a combustor section having one or more combustors configured to generate combustion products, a turbine section having one or more turbine stages between an upstream end and a downstream end, an exhaust section disposed downstream from the downstream end of the turbine section, and a fluid supply system coupled to the exhaust section. The one or more turbine stages are driven by the combustion products. The exhaust section has an exhaust passage configured to receive the combustion products as an exhaust gas. The fluid supply system is configured to route a cooling gas to the exhaust section. The cooling gas has a temperature lower than the exhaust gas. The cooling gas includes an extracted exhaust gas, a gas separated from the extracted exhaust gas, carbon dioxide, carbon monoxide, nitrogen oxides, or a combination thereof.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: April 4, 2017
    Assignees: General Electric Company, ExxonMobil Upstream Research Company
    Inventors: Pramod K. Biyani, Scott Walter Leyers, Carlos Miguel Miranda
  • Patent number: 9581081
    Abstract: A system includes a gas turbine engine that includes a turbine section having one or more turbine stages between an upstream end and a downstream end, an exhaust section disposed downstream from the downstream end of the turbine section, and a fluid supply system coupled to the exhaust section. The fluid supply system is configured to route an inert gas to the exhaust section.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: February 28, 2017
    Assignees: General Electric Company, ExxonMobil Upstream Research Company
    Inventors: Pramod K. Biyani, Rajarshi Saha, Anil Kumar Dasoji, Richard A. Huntington, Franklin F. Mittricker
  • Patent number: 9567904
    Abstract: A method for controlling a gas turbine power plant, a gas turbine power plant, a method for controlling a carbon-containing fuel gasifier, and a carbon-containing fuel gasifier that can keep constant the amount of heat generated from a synthetic gas produced by the carbon-containing fuel gasifier. The gas turbine power plant includes a coal gasifier including a coal gasifier unit that gasifies a fuel containing carbon to produce a synthetic gas and a water-cooled wall duct disposed on the coal gasifier unit and to which a coolant, i.e., water, is directed; a gas turbine combustor that combusts the synthetic gas to produce combustion gas; a gas turbine rotated by the combustion gas produced by the gas turbine combustor; and a generator that generates electrical power. The amount of fuel fed to the coal gasifier is controlled depending on the amount of heat absorbed by the coolant directed to the water-cooled wall duct.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: February 14, 2017
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Yasunari Shibata, Yuichiro Kitagawa, Kengo Shibata, Yuichiro Urakata
  • Patent number: 9551277
    Abstract: A method and system for cost effectively converting a feedstock using thermal plasma, or other styles of gassifiers, into to a feedwater energy transfer system. The feedstock can be any organic material, or fossil fuel. The energy transferred in the feedwater is converted into steam which is then injected into the low turbine of a combined cycle power plant. Heat is extracted from gas product issued by a gassifier and delivered to a power plant via its feedwater system. The gassifier is a plasma gassifier and the gas product is syngas. In a further embodiment, prior to performing the step of extracting heat energy, there is provided the further step of combusting the syngas in an afterburner. An air flow, and/or EGR flow is provided to the afterburner at a rate that is varied in response to an operating characteristic of the afterburner. The air flow to the afterburner is heated.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: January 24, 2017
    Assignee: Plasma Tech Holdings, LLC
    Inventor: James C. Juranitch
  • Patent number: 9410095
    Abstract: A method of gasification of biomass using a gasification island. The gasification island includes: a biomass pre-treatment and storage unit, a biomass feeder, an external heat source, a gasifier, a crude syngas cooling unit, a crude syngas washing unit, a fresh syngas storage unit, and an ash and wastewater treatment unit. The method includes: pre-treating and storing biomass, gasifying the biomass in the gasifier, cooling a crude syngas, washing and removing dust from the crude syngas, and storing fresh syngas.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: August 9, 2016
    Assignee: WUHAN KAIDI ENGINEERING TECHNOLOGY RESEARCH INSTITUTE CO., LTD.
    Inventors: Yanfeng Zhang, Minggui Xia, Hongtao Nie, Wenyan Liu, Liang Zhang
  • Patent number: 9404425
    Abstract: A regulator device (10) for regulating a turbine engine (3). The regulator device (10) includes mechanical power take-off means (100) for taking off power mechanically from a gas generator (4), and an engine computer (20) controlling said engine (3) to comply with at least a first limitation (LimTET, LimT45) of a temperature (TET, T45) of the gas within the engine, and with a second limitation (LimNg) of a speed of rotation (Ng) of the gas generator (4). The engine computer (20) determines whether the speed of rotation (Ng) of the gas generator has reached said second limitation (LimNg), and whether said temperature (TET, T45) has reached said first limitation (LimTET, LimT45). An avionics computer (30) causes the mechanical power take-off means (100) to operate if the speed of rotation (Ng) of the gas generator (4) has reached said second limitation (LimNg), and if said temperature (TET, T45) has not reached said first limitation (LimTET, LimT45).
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: August 2, 2016
    Assignee: Airbus Helicopters
    Inventor: Laurent Martin
  • Patent number: 9394808
    Abstract: Disclosed is a method for operating a gas turbine (11) comprising a compressor (14), which is equipped with variable inlet guide vanes (13) and receives at its inlet an inlet air flow, which has passed a temperature-affecting air inlet system (12a), a combustor (15, 15?) and a turbine (16, 16?). In a closed loop control scheme, a control variable indicative of the turbine outlet temperature (TAT2) is generated, and the air inlet system (12a) and/or the variable inlet guide vanes (13) are controlled in accordance with said control variable such that the turbine outlet temperature (TAT2) is kept at or above a desired setting value (TAT2min).
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: July 19, 2016
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Andrea Brighenti, Darrel Shayne Lilley, Karsten Franitza, Anton Nemet
  • Patent number: 9376961
    Abstract: A system for controlling air flow rate of a compressed working fluid to a fuel injector of a combustor includes an outer casing that defines a high pressure plenum around a portion of the combustor, an extraction port in fluid communication with the high pressure plenum and an inlet port. The combustor includes a plurality of fuel injectors arranged around a combustion liner, an inner flow sleeve, an outer air shield that surrounds the plurality of fuel injectors and the inner flow sleeve. The outer air shield defines an injection an air plenum between the outer air shield and the inner flow sleeve and an inlet to the injection air plenum. An external fluid circuit provides fluid communication between the extraction port and the inlet port. A baffle extends between the outer casing and the outer air shield to provide flow separation between the inlet and the high pressure plenum.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: June 28, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Lucas John Stoia, Patrick Benedict Melton, Richard Martin DiCintio
  • Patent number: 9354231
    Abstract: The present disclosure relates, according to some embodiments, reactive self-indicating adsorbent materials, methods, and systems. A system may comprise, for example, a reactive self indicating adsorbent material, wherein the reactive self indicating adsorbent material comprises at least one super paramagnetic particle and a semi permeable support, wherein the at least one super paramagnetic particle is configured such that at least one magnetic property of the at least one super paramagnetic particle changes upon contact with an adsorbate; and/or at least one detector configured and arranged to detect the at least one magnetic property.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: May 31, 2016
    Assignee: Leidos, Inc.
    Inventor: Thomas Grant Glover
  • Patent number: 9334458
    Abstract: Most of the abundant naturally occurring low rank coal, which has a high moisture content and a high oxygen content, is transported with poor efficiency; utilized for heating with degraded thermal efficiency because of the loss of heat due to sensible heat for heating moisture and latent heat for vaporizing moisture; and utilized in existing coal combustion facilities with difficulty due to a high volatile component content.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: May 10, 2016
    Assignees: KYUSHU ELECTRIC POWER CO., INC., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Tatsuro Harada, Seiichiro Matsuda, Isao Mochida, Jun-ichiro Hayashi, Yohsuke Matsushita, Tsuyoshi Yamamoto, Toshiro Noguchi
  • Patent number: 9199888
    Abstract: A process and system for producing liquid and gas fuels and other useful chemicals from carbon containing source materials comprises cool plasma gasification and/or pyrolysis of a source material to produce synthesis gas using the produced synthesis gas for the production of a hydrocarbon, methanol, ammonia, urea, and other products. The process and system are capable of sequestering carbon dioxide and reducing NOx and SOx.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: December 1, 2015
    Assignee: SGE ScandGreen Energy AB
    Inventors: Henrik Selstam, Erik Fareid
  • Patent number: 9127595
    Abstract: A multi-stage, two-flow, axial flow expander close-coupled to a driven machine, such as a generator. The expander includes one or more expansion stages separated by a series of flow stream dividers that separate each expansion stage into outer and inner expander flowpaths. Working fluid at a first temperature is directed into the outer expander flowpath for expansion, and working fluid at a second, lesser temperature is directed into the inner expander flowpath for expansion. Expansion of the working fluid drives the driven machine.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: September 8, 2015
    Assignee: Dresser-Rand Company
    Inventor: William C. Maier
  • Patent number: 9097188
    Abstract: The disclosure provides a gas turbine device capable of producing a mixed gas in which three or more types of gases are evenly mixed, and of doing the like. To achieve this, in a gas turbine device configured to burn in a combustor a fuel gas supplied from a fuel gas supplier, together with a compressed air supplied from an air compressor, and to rotationally drive a gas turbine by a combustion gas generated at the burning, the fuel gas supplier includes two mixers, and is configured to produce a mixed gas by mixing three types of gases of a first gas, a second gas, and a third gas in the mixers in ascending order of specific gravity or in descending order of specific gravity, and to supply the mixed gas to the combustor as the fuel gas.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: August 4, 2015
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Hiroshi Tanabe, Noboru Hisaka
  • Patent number: 9003761
    Abstract: In one embodiment, a system is provided that includes a first gas turbine engine. The first gas turbine engine has a first compressor configured to intake air and to produce a first compressed air and a first combustor configured to combust a first mixture to produce a first combustion gas. The first mixture has a first fuel, at least a first portion of the first compressed air, and a second combustion gas from a second gas turbine engine. The first gas turbine engine also includes a first turbine configured to extract work from the first combustion gas.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: April 14, 2015
    Assignee: General Electric Company
    Inventor: Samuel David Draper
  • Publication number: 20150089919
    Abstract: The present invention refers to a system for the production and storage of surplus energy from regenerative power sources in the form of hydrocarbons, which can be used in a closed cycle for renewed environment-friendly power production by the recycling of waste gas products. The system 1 has a facility 2 for the production of power by the combustion of hydrocarbons, a facility 3 for the production of hydrocarbons from hydrogen and carbon dioxide a repository 4 with carbon dioxide a repository 5 with hydrocarbons, whereby the facility (2) for the production of power with at least one line each (6, 7) connected to the repository (4) containing carbon dioxide and repository (5) with hydrocarbons, and the facility (3) for the production of combustible hydrocarbons with at least one line (8) connected to the repository (5) containing hydrocarbons.
    Type: Application
    Filed: April 19, 2013
    Publication date: April 2, 2015
    Inventor: Michael Kuehn
  • Patent number: 8978353
    Abstract: Systems and methods for rejecting waste heat generated by one or more operating systems installed on an aircraft employ an endothermic fuel that can participate in endothermic catalytic cracking at temperatures below about 80° C. when exposed to a cracking catalyst that contains a superacid operative to induce low-temperature catalytic cracking of the branched alkanes. The endothermic fuel contains an effective amount of the branched alkanes so that a net endothermic effect is realized when the fuel is exposed to the cracking catalyst. The low-temperature, heat-consuming cracking of the branched alkanes increases the heat sink capacity of the endothermic fuel.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: March 17, 2015
    Assignee: Lockheed Martin Corporation
    Inventors: Daniel G. Norton, Robert J. Perry, John Osaheni, Patrick Pastecki, Paul Glaser, Ashish B. Mhadeshwar
  • Publication number: 20150068189
    Abstract: Provided is a mercury removal system 1 provided in a powder supply system including a pulverizing machine 118 that pulverizes a hydrocarbon raw material, the mercury removal system including: a removal agent supply device 11 which supplies a mercury removal agent; and a mercury removal agent dust collector which collects the dust of the mercury removal agent, wherein a gas discharge line to which the dry flue gas is supplied is connected to the mercury removal agent dust collector, wherein the removal agent supply device includes a mercury removal agent supply line which supplies the mercury removal agent, and wherein the mercury removal agent supply line is connected to the upstream side of the mercury removal agent dust collector in the circulation direction of the dry flue gas.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 12, 2015
    Inventors: Tetsuya SAWATSUBASHI, Yoshinori KOYAMA, Takashi FUJII, Takashi IWAHASHI, Norihiro OBA, Koji NISHIMURA
  • Publication number: 20150033749
    Abstract: In one embodiment, a system includes a turbine combustor having a combustor liner disposed about a combustion chamber, a head end upstream of the combustion chamber relative to a downstream direction of a flow of combustion gases through the combustion chamber, a flow sleeve disposed at an offset about the combustor liner to define a passage, and a barrier within the passage. The head end is configured to direct an oxidant flow and a first fuel flow toward the combustion chamber. The passage is configured to direct a gas flow toward the head end and to direct a portion of the oxidant flow toward a turbine end of the turbine combustor. The gas flow includes a substantially inert gas. The barrier is configured to block the portion of the oxidant flow toward the turbine end and to block the gas flow toward the head end within the passage.
    Type: Application
    Filed: July 28, 2014
    Publication date: February 5, 2015
    Inventors: Ilya Aleksandrovich Slobodyanskiy, Lewis Berkley Davis, JR., Karl Dean Minto
  • Patent number: 8938966
    Abstract: A device and a method for using overcapacities in the power grid is provided. In case of an oversupply of energy, the energy is transferred to a thermal storage device directly via a heating element and in the discharge case of the thermal storage device the heat is removed from the thermal storage device and made available to a thermodynamic cycle whereby electrical energy is produced. The heat from the thermal storage device is used to preheat air in an air feed line to a combustion chamber, or fuel is pre-heated using heat from the thermal storage device.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: January 27, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Tobias Jockenhoevel, Norbert König, Rainer Nies, Nicolas Vortmeyer, Erik Wolf
  • Patent number: 8931283
    Abstract: A reformer for use in a gas turbine engine specially configured to treat a supplemental fuel feed to the combustor that includes a reformer core containing a catalyst composition and an inlet flow channel for transporting the reformer fuel mixture, air and steam (either saturated or superheated) into a reformer core. An outlet flow channel transports the resulting reformate stream containing reformed and thermally cracked hydrocarbons and substantial amounts of hydrogen out of the reformer core for later combination with the main combustor feed. Because the catalytic partial oxidation reaction in the reformer is highly exothermic, the additional heat is transferred (and thermally integrated) using one or more heat exchange units for a first and/or second auxiliary gas turbine fuel stream that undergo thermal cracking and vaporization before combining with the reformate. The combined, hydrogen-enriched feed significantly improves combustor performance.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: January 13, 2015
    Assignee: General Electric Company
    Inventors: Abdul Rafey Khan, Hasan Karim, Jonathan Dwight Berry