Fluidized Bed Of Noncombustible Particles Patents (Class 110/245)
  • Patent number: 10330385
    Abstract: The present invention relates to a device for removing fluids and/or solid substances from a mixture of particle-shaped materials with a container which forms a ring-shaped process chamber with a plurality of cells separated from each other by walls, comprising an inlet cell, intermediate cells and an outlet cell, a feeding installation for conveying the mixture to be treated into the inlet cell of the process chamber, a discharge installation for discharging the mixture treated from the outlet cell of the process chamber, a ventilation installation for feeding in a first fluidisation agent, in particular in the form of overheated vapour, from below into the process chamber through an inflow floor for generating a fluidised bed in the process chamber, a heating installation for preparing the first fluidisation agent in the flow direction before the ventilation installation, swirl impellers for conditioning the flow in the container from the process chamber to the heating installation and which in part also le
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: June 25, 2019
    Assignee: BMA BRAUNSCHWEIGISCHE MASCHINENBAUANSTALT AG
    Inventors: Gerald Caspers, Hartmut Hafemann, Carsten Bonath, Holger Fersterra
  • Patent number: 10272408
    Abstract: Disclosed is provided to overcome problems of conventional methods using each of a solid discharge nozzle and a screw conveyer. According to one exemplary embodiment of the present invention, a fluidized bed system is provided to circulate solids using pressure and density difference. More particularly, a fluidized solid circulation system using pressure and density difference is characterized by comprising: a first fluidized bed reactor; a second fluidized bed reactor; a first cyclone; a second cyclone; a first pressure control valve; a second pressure control valve; a lower loop seal; an upper loop seal; and a control part, thereby circulating the solids between the first fluidized bed reactor and the second fluidized bed reactor.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: April 30, 2019
    Assignee: Korea Institute of Energy Research
    Inventors: Ho-jung Ryu, Doyeon Lee, Gyoung-tae Jin, Chang-keun Yi, Dowon Shun, Jaehyeon Park, Dal-hee Bae, Sung-ho Jo, Seung-yong Lee, Young Cheol Park, Jong-ho Moon, Dong-ho Lee
  • Patent number: 10066834
    Abstract: A system for carbon capture includes an oxy-fuel combustor for combusting a hydrocarbon with pure oxygen to produce heat energy and carbon dioxide, a COS converter for converting the carbon dioxide to COS, a transport means for transporting the COS, a sulphur recovery unit for recovering sulphur from the COS and an adjunct sulphur-burning power plant for combusting the sulphur to generate energy for powering one or more carbon capture and storage processes.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: September 4, 2018
    Inventor: Bogdan Wojak
  • Patent number: 10047307
    Abstract: A gasification system including: a casing defining: a solid material inlet; a fixed bed drying zone proximal the solid material inlet; a fixed bed pyrolysis zone arranged below the drying zone along a gravity vector, distal the solid material inlet across the pyrolysis zone; a kinetic bed combustion zone surrounded by the pyrolysis zone; and a fluidization channel extending through the drying zone and pyrolysis zone and fluidly connected to the combustion zone, the fluidization channel defining a kinetic bed reduction zone fluidly isolated from and thermally connected to the pyrolysis zone and the drying zone by the fluidization channel.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: August 14, 2018
    Assignee: All Power Labs, Inc.
    Inventor: James Mason
  • Patent number: 10016753
    Abstract: A baffle is installed on the wall of a regenerator vessel to push catalyst away from the wall to ensure adequate exposure to regeneration gas and complete combustion of coke from the catalyst. We have found that in deep beds, catalyst can flow down the walls and escape sufficient exposure to regeneration gas and undergo too little regeneration.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: July 10, 2018
    Assignee: UOP LLC
    Inventors: Richard A. Johnson, II, Paolo Palmas, Mohammad-Reza Mostofi-Ashtiani, Quan Yuan, James W. Althoff
  • Patent number: 10011794
    Abstract: A fluidized bed system includes a first nozzle group that is provided inside a fluidized bed furnace, a second nozzle group that is provided inside the fluidized bed furnace, a first supply section that supplies a gas into the fluidized bed furnace through the first nozzle group, a second supply section that supplies the gas into the fluidized bed furnace through both the first and second nozzle groups, and a control section that controls the second supply section during a start-up operation to supply the gas into the fluidized bed furnace to form a fluidized bed of a fluid medium inside the fluidized bed furnace, and stops the supply of the gas by the second supply section and controls the first supply section during a normal operation to supply the gas into the fluidized bed furnace to form the fluidized bed of the fluid medium inside the fluidized bed furnace.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: July 3, 2018
    Assignee: IHI Corporation
    Inventor: Hiroshi Funagoshi
  • Patent number: 9993792
    Abstract: The invention relates to a gas distributor nozzle (25) comprising a gas feed (1) directed vertically upwards and a float (13) with which an outlet orifice out of the gas feed (1) may be closed if no gas is flowing, wherein the float (13) has a center of gravity which is below a point of force application of the gas flow. The invention further comprises a reactor with a solid bed and at least one gas distributor nozzle (25).
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: June 12, 2018
    Assignee: BASF SE
    Inventors: Dominik Garella, Kati Bachmann
  • Patent number: 9976739
    Abstract: An air nozzle arrangement for a fluidized bed boiler, comprising an air feed pipe and an air nozzle which limit an air feed duct configured to supply air to the furnace of the fluidized bed boiler. The air nozzle arrangement comprises a surface configured to guide coarse material along said surface. At least part of said surface is thermally insulated from the air nozzle and/or the air feed pipe. Furthermore, at least part of said surface is configured to protect at least part of said air nozzle and/or air feed pipe. Thus, the temperature of said surface is configured to be high when the fluidized bed boiler is in operation, whereby the solidification of molten material of the fluidized bed in the air nozzle arrangement is reduced.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: May 22, 2018
    Assignee: Valmet Technologies Oy
    Inventors: Vesa Kainu, Jukka-Pekka Leppälä
  • Patent number: 9927175
    Abstract: The invention relates to a method for monitoring an operating status of an anode furnace, wherein the anode furnace is formed from a plurality of heating ducts (12) and furnace chambers, wherein the furnace chambers serve for receiving anodes and the heating ducts serve for controlling the temperature of the furnace chambers, wherein the anode furnace comprises at least one furnace unit (11) having a heating zone (18), a firing zone (19) and a cooling zone (20), wherein a suction device (15) is arranged in the heating zone and a burner device (16) is arranged in the firing zone, wherein, by means of the burner device, combustion air is heated up in the heating ducts of the firing zone, wherein, by means of the suction device, hot air is sucked out of the heating ducts of the heating zone, wherein a suction output of the suction device is determined, and wherein a pressure in the heating duct is measured, wherein a volumetric flow in the heating duct is determined from a ratio of suction output and pressure.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: March 27, 2018
    Assignee: INNOVATHERM PROF. DR. LEISENBERG GMBH + CO. KG
    Inventors: Hans-Peter Mnikoleiski, Detlef Maiwald, Wolfgang Uhrig, Frank Heinke, Domenico Di Lisa, Andreas Himmelreich
  • Patent number: 9868916
    Abstract: Methods, systems, and apparatus for cooling hot product gas are provided. The method includes introducing cooled solid into a downward or upward contactor where heat transfer between solid and product gas. After separating solid and product gas in cyclone system, cooled product gas flows to process downstream and hot solid is introduced into a fluidized bed solid cooler from the cyclone dipleg. The hot solid flows through the shell side of the fluidized bed cooler and exchanger heat with the coolant in the tube side. The cooled solid flows through a mechanical or non-mechanical valve back into the downward/upward contactor and complete the cycle.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: January 16, 2018
    Inventor: Yongchao Li
  • Patent number: 9822966
    Abstract: A quench system includes a housing having a longitudinal axis, a gas path for a gas within the housing, a steam input and output, and a dip tube within the housing. The dip tube includes tubing arranged to form a wall. A steam path, separate from the gas path, is disposed within the tubing in a thickness of the wall. The dip tube is configured to allow passage of the gas along the gas path. The steam input is fluidically connected to the steam output by the tubing. The quench system is configured to cool the gas along the gas path and heat steam along the steam path within the tubing of the dip tube.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: November 21, 2017
    Assignee: General Electric Company
    Inventors: Rajeshwar Sripada, Paromita Bhattacharya, Pallab Karmakar, Atul Kumar Vij
  • Patent number: 9783893
    Abstract: A method of manufacturing a microarray substrate having improved reliability and mass-production properties uses a vapor of a surface-reforming material, and includes washing a base substrate, supplying the vapor of the surface-reforming material into a container to which the base substrate is provided, and coupling the vapor of the surface-reforming material to a surface of the base substrate to form a self-assembled monolayer.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: October 10, 2017
    Assignees: GACHON UNIVERSITY OF INDUSTRY-ACADEMIC COOPERATION FOUNDATION, GIL MEDICAL CENTER
    Inventors: Young Soo Yoon, Seung Hyun Jee, Seon Tae Kim
  • Patent number: 9764960
    Abstract: A process for preparing granular polysilicon using a fluidized bed reactor is disclosed. The upper and lower spaces of the bed are defined as a reaction zone and a heating zone, respectively, with the height of the reaction gas outlet being selected as the reference height. The invention maximizes the reactor productivity by sufficiently providing the heat required and stably maintaining the reaction temperature in the reaction zone, without impairing the mechanical stability of the fluidized bed reactor. This is achieved through electrical resistance heating in the heating zone where an internal heater is installed in a space in between the reaction gas supplying means and the inner wall of the reactor tube, thereby heating the fluidizing gas and the silicon particles in the heating zone.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: September 19, 2017
    Assignee: Korea Research Institute of Chemical Technology
    Inventors: Hee Young Kim, Kyung Koo Yoon, Yong Ki Park, Won Choon Choi
  • Patent number: 9709268
    Abstract: A system for carbon capture includes an oxy-fuel combustor for combusting a hydrocarbon with pure oxygen to produce heat energy and carbon dioxide, a COS converter for converting the carbon dioxide to COS, a transport means for transporting the COS, a sulphur recovery unit for recovering sulphur from the COS and an adjunct sulphur-burning power plant for combusting the sulphur to generate energy for powering one or more carbon capture and storage processes.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: July 18, 2017
    Inventor: Bogdan Wojak
  • Patent number: 9708200
    Abstract: A system and method for passive capture of ammonia in an ammonia-containing liquid effluent. The invention allows for the passage of ammonia through microporous hydrophobic gas-permeable membranes and its capture in a circulated stripping solution with concomitant production of a concentrated non-volatile ammonium salt.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: July 18, 2017
    Assignee: The United States of America, as represented by The Secretary of Agriculture
    Inventors: Matias B Vanotti, Ariel A Szogi
  • Patent number: 9676557
    Abstract: A grain elevator system and method are disclosed, where the grain elevator system includes a grain elevator, a grain elevator paddle, and/or a grain elevator paddle insert. When the grain elevator system includes a sensor attached to a side of the grain elevator, the grain elevator paddle may be configured to include a divider piece for biasing grain towards the side of the grain elevator having the sensor attached. When the grain elevator system includes a sensor attached to a side of the grain elevator, a grain elevator paddle insert may be positioned on top of the grain elevator paddle for biasing grain towards the side of the grain elevator having the sensor attached.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: June 13, 2017
    Assignee: DEERE & COMPANY
    Inventors: Broughton C. Boydell, Frederick W. Nelson
  • Patent number: 9638418
    Abstract: In a method for operating a steam generator, a transport reactor is provided. Only a substantially pure oxygen feed stream is introduced into the transport reactor in an amount sufficient to maintain the transport reactor at or above a specific system load. The specific load is the system load when only the substantially pure oxygen feed stream is provided to the transport reactor at a minimum flow velocity for operating the transport reactor. A fuel is combusted in the presence of the substantially pure oxygen feed stream to produce a flue gas, which contains solid material. The solid material is separated from the flue gas and passed to a heat exchanger. The heat exchange may be one of a moving bed heat exchanger or a fluidized bed heat exchanger. The solid material is directed to the transport reactor to contribute to the combustion process.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: May 2, 2017
    Assignee: General Electric Technology GmbH
    Inventors: John H. Chiu, George D. Mylchreest
  • Patent number: 9581325
    Abstract: A ground supported single drum power boiler is described combining a refractory lined and insulated V-Cell floor; refractory lined and insulated combustion chamber; integrated fuel chutes configured to pre-dry wet solid fuel; top mounted fuel bin; internal chamber walls; configurable combustion air systems; and a back pass with after-burner ports and cross flow superheaters. The boiler can be configured in pre-assembled modules to minimize the field construction time and cost. An alternative embodiment is adaptable as a gasifier.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: February 28, 2017
    Inventors: Daniel R. Higgins, Eugene Sullivan
  • Patent number: 9580657
    Abstract: A carbonaceous feed pyrolysis apparatus is provided including two or more hot particle fluidized beds, and one or more positive displacement apparatus for the transfer of hot particles between two or more of the beds, wherein one or more of the fluidized beds contains a combustion zone. A bio-oil production process is also provided, including pyrolysis of a carbonaceous bio-mass using two or more fluidized beds, including a first combustion zone carried out in one or more combustion fluidized beds in which a particulate material is fluidized and heated, and a second pyrolysis zone carried out in one or more pyrolysis fluidized beds in which the hot particles heated in the combustion zone are used for pyrolysis of the bio-mass.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: February 28, 2017
    Assignees: University of Pretoria, The United States, as represented by the Secretary of Agriculture
    Inventors: Michael David Heydenrych, Stephen David Swart, Akwasi Acheampong Boateng
  • Patent number: 9528762
    Abstract: The invention relates to a nozzle bottom device and to a method for operating the latter. The nozzle bottom arrangement has a nozzle group with first nozzles and a further nozzle group with second nozzles. The two nozzle groups can be supplied independently of each other with a fluidizing medium. The respective volumetric flow can be switched on and off or can be adjusted variably. The first nozzles and the second nozzles are uniformly distributed over the entire surface of the nozzle bottom arrangement. As a result, a homogeneous fluidized bed is produced in the fluidized bed dryer irrespective of whether only one of the nozzle groups or all of the nozzles is or are operated.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: December 27, 2016
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Bernd Thaler, Hans Peter Schommer
  • Patent number: 9513000
    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: Grant
    Filed: September 29, 2011
    Date of Patent: December 6, 2016
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Takahiro Marumoto, Hidehisa Yoshizako, Kenji Kiyama, Kenso Arita, Pauli Dernjatin
  • Patent number: 9470416
    Abstract: The object of the invention is a method for enhancing the operation of a circulating mass reactor (1), which circulating mass reactor (1) comprises a fluidized-bed chamber (8) provided with a fluidized bed (108), means for separating fluidized material (80) from the flue gases, and a return conduit system (15, 16, 19) including at least one cooled return conduit (15, 16). In the method, for the combustion of fuel taking place in the circulation mass reactor (1) is provided a lower combustion chamber (89), which comprises a fluidized-bed chamber (8), and an upper combustion chamber (11) and a flow conduit (10) connecting them. The flow conduit (10), the means for separating the fluidized material (80) from the fuel gases and the return conduit system (15, 16, 19) are arranged to be located essentially between the lower combustion chamber (89) and the upper combustion chamber (11).
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: October 18, 2016
    Assignee: Endev Oy
    Inventor: Seppo Ruottu
  • Patent number: 9464848
    Abstract: A method and apparatus for cooling hot gas streams in the temperature range 800° C. to 1600° C. using multi-stage circulating fluid bed (CFB) coolers is disclosed. The invention relates to cooling the hot syngas from coal gasifiers in which the hot syngas entrains substances that foul, erode and corrode heat transfer surfaces upon contact in conventional coolers. The hot syngas is cooled by extracting and indirectly transferring heat to heat transfer surfaces with circulating inert solid particles in CFB syngas coolers. The CFB syngas coolers are staged to facilitate generation of steam at multiple conditions and hot boiler feed water that are necessary for power generation in an IGCC process. The multi-stage syngas cooler can include internally circulating fluid bed coolers, externally circulating fluid bed coolers and hybrid coolers that incorporate features of both internally and externally circulating fluid bed coolers.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: October 11, 2016
    Assignee: Southern Company
    Inventors: Guohai Liu, Pannalal Vimalchand, Xiaofeng Guan, WanWang Peng
  • Patent number: 9388978
    Abstract: Methods and systems for controlling the temperature of a heated flue gas stream downstream of a multi-part heat exchanger within a desired operating range through the use of a fluid bypass line which bypasses one or more sections, but not all sections, of the multi-part heat exchanger. In some but not necessarily all embodiments some fluid flow is maintained through the heat exchanger at all times. In one embodiment, the method includes sensing a temperature in said flue gas stream in proximity to an intermediate header of said multi-part heat exchanger and controlling a position of a bypass line control valve to control an amount of fluid passing through a fluid bypass line that bypasses the section of the multi-part heat exchanger between an inlet header and the intermediate header based on said temperature in said flue gas stream in proximity to the intermediate header of said multi-part heat exchanger.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: July 12, 2016
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS AMERICAS, INC.
    Inventor: Roger A. Soltys
  • Patent number: 9314763
    Abstract: A system configured for the production of at least one product selected from the group consisting of syngas, Fischer-Tropsch synthesis products, power, and chemicals, the system comprising a dual fluidized bed gasification apparatus and at least one apparatus selected from power production apparatus configured to produce power from the gasification product gas, partial oxidation reactors configured for oxidation of at least a portion of the product gas, tar removal apparatus configured to reduce the amount of tar in the product gas, Fischer-Tropsch synthesis apparatus configured to produce Fischer-Tropsch synthesis products from at least a portion of the product gas, chemical production apparatus configured for the production of at least one non-Fischer-Tropsch product from at least a portion of the product gas, and dual fluidized bed gasification units configured to alter the composition of the product gas. Methods of operating the system are also provided.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: April 19, 2016
    Assignee: RES USA, LLC
    Inventors: Weibin Jiang, Bruce E. McComish, Bryan C. Borum, Benjamin H. Carryer, Mark D. Ibsen, Mark Robertson, Eric Elrod, Sim Weeks, Harold A. Wright
  • Patent number: 9068697
    Abstract: A process for reducing segregation of mining tailings while being deposited below the surface of a column of fluid is provided which comprises introducing the mining tailings into a downpipe having an inlet at or near the surface of the column of fluid and an outlet submerged in the column of fluid; providing at least one pressure drop element in the downpipe to prevent acceleration of the mining tailings and maintain the tailings flow therethrough; and providing a diffusing device at the outlet of the downpipe to reduce the velocity of the mining tailings as the tailings are discharged therefrom.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: June 30, 2015
    Assignee: SYNCRUDE CANANDA LTD.
    Inventors: Eric Leneve, Ron Cleminson, Nan Wang
  • Patent number: 8992841
    Abstract: A fluidized bed reactor includes a bottom portion, a roof portion, and side walls vertically extending between the bottom portion and the roof portion, forming a reaction chamber of the reactor. At least one side wall of the reaction chamber forms at least one vertical indentation in the reaction chamber, which indentation extends from the plane of the at least one side wall towards the reaction chamber. The indentation extending from the plane of the at least one side wall towards the reaction chamber is formed of a portion of the at least one side wall, protruding from the plane of the at least one side wall towards the reaction chamber, and the portion of the at least one side wall includes at least two substantially vertical indenting wall portions deviating from the plane of the at least one side wall at vertical lines within a distance from each other.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: March 31, 2015
    Assignee: Foster Wheeler Energia Oy
    Inventors: Pentti Lankinen, Pertti Kinnunen, Teemu Nevalainen
  • Patent number: 8960107
    Abstract: An apparatus for processing fly ash comprising a heated refractory-lined vessel having a series of spaced angled rows of swirl-inducing nozzles which cause cyclonic and/or turbulent air flow of the fly ash when introduced in the vessel, thus increasing the residence time of airborne particles. Also disclosed is a method of fly ash beneficiation using the apparatus.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: February 24, 2015
    Assignee: The SEFA Group Inc.
    Inventors: Jimmy Clements Knowles, Richard F. Storm
  • Patent number: 8939093
    Abstract: A boiler grate including air channels for supplying primary air to a furnace of a boiler. At least one channel, which is open on top, is arranged to collect ash and material from the furnace. At least one removal element is arranged in the channel and to mechanically move ash and material along the channel. A boiler includes a grate, a furnace which is limited by the walls of the furnace and the grate, and an ash chute, which is arranged to remove ash and material from the furnace. The ash removal elements is arranged to move ash and material towards the air chute.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: January 27, 2015
    Assignee: Valmet Power Oy
    Inventor: Timo Mero
  • Patent number: 8881662
    Abstract: An inside of an incinerator body into which sludge is fed is divided into a lower portion, a portion above the lower portion, and a top portion in a height direction. The lower portion serves as a pyrolysis zone for supplying fluidizing air having an air ratio of 1.1 or less together with fuel to thermally decompose the sludge while fluidizing the sludge. The portion above the lower portion serves as an over bed combustion zone for supplying only combustion air having an air ratio of 0.1 to 0.3 to form a local high temperature place to decompose N2O. The top portion serves as a perfect combustion zone for perfectly combusting unburned contents. The quantity of N2O generated during sludge incineration can be drastically reduced while maintaining the use quantity of auxiliary fuel at the same level as that of a conventional incineration method.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: November 11, 2014
    Assignee: Metawater Co., Ltd.
    Inventors: Masaki Yamada, Tetsuya Yanase, Masayuki Yamamoto, Tomoyuki Takeshita, Kosuke Kamiya
  • Patent number: 8875414
    Abstract: Embodiments provide a unidirectional multi-path kiln with two or more chambers and generally parallel flow paths extending through the kiln, on opposite sides, from charge entry portals at a first end of the kiln to charge exit portals at a second end of the kiln. Moist heated air flowing from the second heated chamber is received in the first chamber and circulated around the lumber charges with one or more fans. The lumber charges proceed in the same direction on the flow paths through the heated second chamber, which may be an existing kiln. Charge exit portals at the distal end of the kiln and/or intermediate charge portals between the second chamber and a third chamber may be provided with insulating members configured to reduce airflow from the second chamber through the charge exit portals.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: November 4, 2014
    Assignee: USNR, LLC
    Inventor: Christopher W. Blomquist
  • 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
  • Patent number: 8833275
    Abstract: A process for at least one of a chemical and a physical treatment of fluidizable substances in a reactor. The process includes introducing a hot gas into an interior of the reactor through a gas supply tube and cooling at least one of the hot gas and the gas supply tube with a coolant. The cooling is performed by contacting the hot gas with the coolant so as to provide a temperature of a wall of the gas supply tube at least 50° C. lower than a temperature of the gas at an inlet of the gas supply tube facing away from the interior of the reactor.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: September 16, 2014
    Assignee: Outotec Oyj
    Inventors: Michael Missalla, Edgar Gasafi, Jean Claude Hein, Andreas Orth, Jean-Paul Nepper
  • Patent number: 8807054
    Abstract: The invention is related to a system (1) for converting fuel material comprising: a first reactor (2) in which a fuel material reacts with an oxide material for producing reaction products including fuel particles, ash and oxide particles, a second reactor (3) for oxidizing the oxide particles produced in the first reactor (2), a carbon separator (4) that receives fuel particles, ash and oxide particles produced in the first reactor (2) and suitable for separating the oxide particles and ash from the fuel particles, the carbon separator (4) comprising an outlet path (4c) for the oxide particles and ash exhaust, characterized in that said outlet path (4c) of the carbon separator (4) is connected to an ash separator (10) for separating the ash from the oxide particles.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: August 19, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Corinne Beal, Laurent Maghdissian, Michel Vandycke
  • Patent number: 8807053
    Abstract: A heat exchanger and a circulating fluidized bed boiler with a heat exchanger including a first fluidized bed heat exchange chamber and a second fluidized bed heat exchange chamber, arranged in connection with a furnace of the circulating fluidized bed boiler, a first inlet channel for introducing hot solids from a particle separator of the external circulation of the circulating fluidized bed boiler into the first heat exchange chamber, a second inlet channel for introducing solids to the second heat exchange chamber, a first discharge for removing a first portion of the cooled solids from the first heat exchange chamber to the second inlet channel and a second discharge for removing cooled solids from the second heat exchange chamber to the furnace, the heat exchange chamber including an inlet for introducing hot solids directly from the internal circulation of the furnace to the second heat exchange chamber.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: August 19, 2014
    Assignee: Foster Wheeler Energia Oy
    Inventor: Kari Kauppinen
  • Patent number: 8783195
    Abstract: A fluidized bed boiler (1) has a furnace (5) limited by walls (2), a grate (3) and a roof (4). Below the grate (3) in connection with the furnace (5) is arranged a steering funnel (7) in which bed material removed from the furnace (5) is led downwards. Into the steering funnel (7), between its upper and lower edge, are arranged guide plates (14, 15, 19), which are substantially divergent from the surface of the steering funnel (7), for guiding a flow of the bed material inside the steering funnel (7). The guide plates (14, 15, 19) aim to equalize the flow of the material inside the steering funnel (7) for example by preventing the development of a core flow between an inlet (24) and outlet connection (25) of the steering funnel and at the same time to get the bed material to flow on the whole cross-sectional area of the steering funnel (7).
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: July 22, 2014
    Assignee: Yit Teollisuus- JA Verkkopalvelut Oy
    Inventor: Juha Pakarinen
  • Patent number: 8714095
    Abstract: A fluid medium separated by a medium separator is supplied to a gasification furnace into which a raw material is also charged. The fluid medium is extracted through any of fluid medium extraction ports connected to a gasification furnace at vertical intervals, and is guided to a combustion furnace. Thus, a bed height and a retention time of the fluid medium in the gasification furnace are separately controlled.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: May 6, 2014
    Assignee: IHI Corporation
    Inventor: Toshiyuki Suda
  • Patent number: 8714094
    Abstract: A grate assembly for a fluidized bed reactor includes a plurality of parallel air ducts extending side-by-side in a substantially horizontal plane and defining spaces therebetween through which coarse material from the fluidized bed descends. A plurality of nozzle assemblies is attached to each air duct for supplying fluidizing air from within the air duct into the fluidized bed. Each of the nozzle assemblies includes a nozzle formed from a tube having an inlet end in fluid communication with the air duct, and an outlet end in fluid communication with the inlet end. An orifice is disposed at the outlet end of the nozzle, and the nozzle is bent proximate the outlet end to direct a primary direction of a stream of fluidizing air flowing from the orifice toward the air duct such that an angle ? between the primary direction and the substantially horizontal plane formed by the air ducts is between about 30 to about 90 degrees.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: May 6, 2014
    Assignee: ALSTOM Technology Ltd
    Inventors: Thomas Richard Bober, Michael Chris Tanca
  • Publication number: 20140102342
    Abstract: A non-mechanical valve arrangement for use with circulating fluidized bed (CFB) boilers has a CFB reaction chamber and a bubbling fluidized bed (BFB) within an enclosure in the lower portion of the CFB reaction chamber, the BFB containing an in-bed heat exchanger (IBHX). Solids flowing from the BFB enclosure to the CFB reaction chamber may be controlled using one or more non-mechanical valves. Each non-mechanical valve is independently controlled using independently controlled fluidizing means. The non-mechanical valve has collectors to collect solids backsifting into the fluidizing means of the valve. Agglomerates are removed which could block the valve. Channel walls parallel to the direction of solids flow through the valve opening may be provided to reduce external interference with local fluidization to maintain the proper functionality of the non-mechanical valve.
    Type: Application
    Filed: October 17, 2012
    Publication date: April 17, 2014
    Applicant: BABCOCK & WILCOX POWER GENERATION GROUP, INC.
    Inventors: MIKHAIL MARYAMCHIK, DAVID L. KRAFT, KIPLIN C. ALEXANDER, THOMAS J. FLYNN, SHENGTENG HU
  • Patent number: 8689709
    Abstract: A pressurized transport oxy-combustor with different configurations is disclosed. Substantially pure oxygen is fed to the transport oxy-combustor under pressure to combust fossil fuels, generating steam for power generation. The end product is the flue gas containing substantially pure CO2 after moisture condensation. The low excess oxygen necessary to achieve complete combustion in the combustor is scavenged by adding another fuel so that substantially all oxygen fed to the combustor is completely consumed. The capability to operate the transport oxy-combustor as a circulating fluidized bed combustor at very high solids circulation rates makes it unnecessary to use recycled CO2 or flue gas as a means to moderate and control the combustion temperature. The temperature in the combustor is effectively controlled by relatively cooler circulating solids that enter the combustion zone. A small amount of CO2 is recycled for aeration and to convey solids fuel to the combustor.
    Type: Grant
    Filed: February 26, 2012
    Date of Patent: April 8, 2014
    Assignee: Southern Company
    Inventors: Pannalal Vimalchand, Guohai Liu, WanWang Peng
  • Patent number: 8667913
    Abstract: A method and device for controlling retention time of a fluid medium in a fluidized-bed gasification furnace in a gasification facility are provided. A fluid medium is guided to any of a plurality of fluid-medium charge ports connected to a gasification furnace at intervals from an upstream end thereof toward a downstream side in a distribution direction of a fluid medium longitudinally of the gasification furnace. A raw material is guided to any of a plurality of raw-material charge ports connected to the gasification furnace at positions longitudinally of the gasification furnace and correspondingly to the fluid-medium charge ports. The fluid medium is extracted and guided to a combustion furnace from a fluid-medium extraction port connected to a downstream end of the gasification furnace longitudinally thereof in the distribution direction of the fluid medium. Thus, retention time of the fluid medium in the gasification furnace is controlled.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: March 11, 2014
    Assignee: IHI Corporation
    Inventor: Toshiyuki Suda
  • Publication number: 20140065559
    Abstract: A pressurized oxy-combustion circulating fluidized bed power plant having a circulating fluidized bed boiler is provided. A combustion chamber of the boiler is in fluid communication with a separator and configured so that solids produced during combustion enter the separator. The power plant further includes an air separation unit that is in fluid communication with the combustion chamber. The air separation unit is configured to supply substantially pure oxygen to the combustion chamber at a pressure greater than 1 bar. An external heat exchanger is in fluid communication with the separator and in fluid communication with the combustion chamber. The external heat exchanger is configured so that a portion of the solids received in the separator pass through the external heat exchanger and transfer heat to a working fluid, after which the solids are returned to the combustion chamber to moderate or control the temperature in the combustion chamber.
    Type: Application
    Filed: September 6, 2012
    Publication date: March 6, 2014
    Applicant: ALSTOM Technology Ltd.
    Inventor: Glen D. Jukkola
  • Patent number: 8622029
    Abstract: A circulating fluidized bed (CFB) boiler includes a reaction chamber, where a bubbling fluidized bed (BFB) is contained within an enclosure within the lower portion of the reaction chamber and contains an in-bed heat exchanger (IBHX) that occupies part of the reaction chamber floor. A plurality of in-bed secondary air nozzles comprise a plurality of tubes which are grouped together and run across the width of the BFB between the BFB enclosure wall and an outside wall of the CFB. The nozzles are positioned to prevent the deflection of solids falling onto the BFB from the CFB by the secondary air jets while avoiding a complicated structure that would interfere with gas and/or solids movement in the furnace. The nozzles' exit openings are flush, or almost flush, with the BFB enclosure wall.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: January 7, 2014
    Assignee: Babcock & Wilcox Power Generation Group, Inc.
    Inventors: Mikhail Maryamchik, Kiplin C. Alexander, Mark C. Godden, David L. Kraft
  • Publication number: 20130327257
    Abstract: Provided is a fluidized bed furnace for heating waste to extract a combustible gas from the waste, including: a plurality of wind boxes arranged on a lower side of a bottom wall of a furnace body to blow a fluidizing gas into the fluidized bed; a plurality of temperature detection sections disposed at respective positions allowing detection of temperatures of an upper position and a lower position vertically spaced in a first region, and allowing detection of temperatures of upper and lower positions vertically spaced in a second region; and a control section operable, based on the temperatures detected by the temperature detection sections, to adjust an air ratio of the fluidizing gas to be fed to each of the wind boxes, so that the temperature of the fluidized bed is raised in a direction from the first region toward the second region.
    Type: Application
    Filed: March 13, 2012
    Publication date: December 12, 2013
    Applicant: KOBELCO ECO-SOLUTIONS CO., LTD.
    Inventors: Takuya Kawai, Hiroyuki Hosoda, Sadanori Kudou
  • Patent number: 8601958
    Abstract: The invention relates to a plant and a process for the looping-type combustion of solid carbon-containing fuels with a carbon dioxide (CO2) flow output. Said process carries out the conversion of carbon without the help of solid carriers of the MyOx type, or of sulphate/sulphide type, and comprises the steps of: (i) Oxidation, wherein the carbon-containing solids are contacted with a gaseous flow comprising oxygen, for a time period and at a temperature sufficient to allow formation of a surface oxidized complex; (ii) Desorption, wherein the surface oxidized complexes generated by adsorption of oxygen in item (i) are released in a gaseous form by decomposition in the absence of O2.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: December 10, 2013
    Assignee: Consiglio Nazionale delle Ricerche
    Inventors: Piero Salatino, Osvalda Seneca
  • Publication number: 20130319300
    Abstract: This gasification melting facility includes: a fluidized bed gasification furnace that generates pyrolysis gas by thermally decomposing waste and discharges incombustibles; a vertical cyclone melting furnace that includes a pyrolysis gas duct through which the pyrolysis gas is introduced; a pyrolysis gas passage that connects the fluidized bed gasification furnace with the pyrolysis gas duct of the vertical cyclone melting furnace; pulverizer that pulverize the incombustibles into pulverized incombustibles so that the particle size of the incombustibles becomes fine; and airflow transporter that puts the pulverized incombustibles in the pyrolysis gas passage, and separating metal contained in the pulverized incombustibles by a difference in specific gravity while conveying the pulverized incombustibles together with airflow. The pyrolysis gas and the pulverized incombustibles are melted in the vertical cyclone melting furnace.
    Type: Application
    Filed: April 5, 2011
    Publication date: December 5, 2013
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENVIROMENTAL & CHEMICAL ENGINEERING CO., LTD
    Inventors: Jun Sato, Toshimasa Shirai, Yoshihisa Saito, Norio Yoshimitsu, Yasunori Terabe
  • Publication number: 20130305557
    Abstract: Systems and related methods of using heat to process an agriculture/product are provided. The system comprises a circulating fluidized bed combustor, a first conduit system, and an indirect heating dryer. The circulating fluidized bed combustor comprises a combustion chamber configured to combust a fuel to generate a mixture comprising hot gases and particulate matter, and a separation chamber configured to separate at least a portion of the particulate matter from the mixture to form a flow of cleaned hot gas. The first conduit system is configured to conduct the cleaned hot gas to a heat exchanger. The indirect heating dryer is in heat conductive contact with the heat exchanger and configured to use the heat from the cleaned hot gas to indirectly dry the agricultural product without contacting the agricultural product with the cleaned hot gas.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 21, 2013
    Applicant: ARCHER DANIELS MIDLAND COMPANY
    Inventor: Glenn D. Kimball
  • Patent number: 8561557
    Abstract: A system for feeding a primary oxidant to an oxy-fired circulating fluidized bed (CFB) boiler. The system includes a plurality of bubble cap assemblies each comprising a stem and a bubble cap with at least one exit hole, each bubble cap connected via a stem to at least one windbox, the windbox containing at least one manifold. A plurality of pipes are provided, each pipe located within a bubble cap assembly with an open end located either at, above or below the exit holes of the bubble caps and an opposite end connected to the manifold located inside each windbox. Recycle gas is piped into the windbox, to the stem, and exiting from the exit holes located in the bubble cap into the CFB. Oxygen is piped into the manifold, through the pipes and exiting through the exit holes located in the bubble cap.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: October 22, 2013
    Assignee: Babcock & Wilcox Power Generation Group, Inc.
    Inventors: Mikhail Maryamchik, Kiplin C. Alexander, Mark C. Godden, David L. Kraft
  • Patent number: 8561556
    Abstract: An installation for combustion (1) of carbon-containing solids includes an oxide reducing reactor (2), a first cyclone (5), a recuperator (6), an oxidation reactor (3), a second cyclone (4), wherein flows an oxide which is reduced then oxidized in each of the two reactors (2 and 3). In the installation, the fuel is ground before being introduced into the reduction reactor (3). The reduced size of the solid fuel particles enables more complete and faster combustion and enables almost 100% production of fly ashes which are separated from the circulating oxides.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: October 22, 2013
    Assignee: ALSTOM Technology Ltd
    Inventors: Jean-Xavier Morin, Corine Beal
  • Patent number: 8516968
    Abstract: A fluidized bed is described and which includes a multiplicity of fluidizing manifolds positioned in spaced relation one relative to the others; an enclosure positioned in gravity receiving relation relative to the multiplicity of fluidizing manifolds and which has an intake and a discharge end, and wherein particulate matter received in the fluidized bed moves under the influence of gravity from the intake end to the discharge end, and a moveable gate is mounted on the second discharge end of the enclosure and which is operable to selectively occlude a discharge aperture and which further facilitates the selective removal of particulate matter and waste material entrained with same, and which moves under the influence of gravity to the discharge end thereof.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: August 27, 2013
    Assignee: Outotec Oyj
    Inventors: LeRoy B. Pope, Michael L. Murphy, James M. Scranton, James R. Thomas, Peter Mohr, Ben H. Cosby, Michael E. Tracey, Mark R. Castle, Douglas W. Scrafford, Greg Dahlstrom