EP3306189A1 - Chaudière à lit fluidisé circulant avec échangeur de chaleur dans le lit supporté par le fond - Google Patents

Chaudière à lit fluidisé circulant avec échangeur de chaleur dans le lit supporté par le fond Download PDF

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Publication number
EP3306189A1
EP3306189A1 EP17175855.0A EP17175855A EP3306189A1 EP 3306189 A1 EP3306189 A1 EP 3306189A1 EP 17175855 A EP17175855 A EP 17175855A EP 3306189 A1 EP3306189 A1 EP 3306189A1
Authority
EP
European Patent Office
Prior art keywords
cfb
bfb
reaction chamber
walls
enclosure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17175855.0A
Other languages
German (de)
English (en)
Inventor
Aaron Gavlak
Mikhail Maryamchik
Scott B. Anderson
David L. Kraft
Jonathan M. Sanders
Michael J. Szmania
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Publication of EP3306189A1 publication Critical patent/EP3306189A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0015—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type
    • F22B31/0023—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type with tubes in the bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/01—Fluidised bed combustion apparatus in a fluidised bed of catalytic particles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0061—Constructional features of bed cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0069—Systems therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0084—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed
    • F22B31/0092—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed with a fluidized heat exchange bed and a fluidized combustion bed separated by a partition, the bed particles circulating around or through that partition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F23C10/12—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated exclusively within the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • F23C10/20—Inlets for fluidisation air, e.g. grids; Bottoms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • F23C10/22—Fuel feeders specially adapted for fluidised bed combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2206/00—Fluidised bed combustion
    • F23C2206/10—Circulating fluidised bed
    • F23C2206/102—Control of recirculation rate

Definitions

  • the present disclosure generally relates to the field of circulating fluidized bed (CFB) reactors or boilers such as those used in electric power generation facilities and, in particular, to a new and useful CFB reactor arrangement which permits temperature control within the CFB reaction chamber and/or of the effluent solids with an in-bed heat exchanger (IBHX).
  • the CFB reactor arrangement provides a bottom-supported IBHX wherein the enclosure that defines the IBHX is supported from the dormant solids hoppers for the CFB and bubbling fluidized bed (BFB) of the IBHX.
  • Circulating fluidized bed (CFB) reactors or boilers are used in the production of steam for industrial processes and electric power generation; see, for example, U.S. Pat. Nos. 5,799,593 , 4,992,085 , 4,891,052 , 5,343,830 , 5,378,253 , 5,435,820 , and 5,809,940 .
  • CFB boilers see Steam/its generation and use, 42nd Edition, edited by G.L. Tomei, Copyright 2015, The Babcock & Wilcox Company, ISBN 978-0-9634570-2-8 , the text of which is hereby incorporated by reference as though fully set forth herein.
  • upward gas flow carries reacting and non-reacting solids to an outlet at the upper portion of the furnace where the solids are separated from the gas, often by a staggered array of impact-type particle separators.
  • the solids are used within the combustion process to transfer heat from the chemical process to the boiler water-cooled enclosure walls and other heating surfaces. The solids thus help control the overall furnace temperature that results in reducing NOx and SO 2 .
  • the bulk of the solids reaching the top of the furnace are collected and returned to the furnace bottom.
  • U.S. Patent 6,532,905 discloses a controllable solids heat exchanger called an in-bed heat exchanger (IBHX).
  • the heat exchanger is immersed within a bubbling fluidized bed (BFB).
  • BFB bubbling fluidized bed
  • Heat transfer in the heat exchanger is controlled by controlling the rate of solids discharge from the lower part of the BFB into the furnace.
  • the discharge control is accomplished using at least one non-mechanical valve being operated by controlling flow rate of fluidizing gas in the vicinity of the non-mechanical valve.
  • the present disclosure improves reliability of the CFB boiler with IBHX while reducing its cost and widening the range of design options.
  • the disclosure provides a configuration wherein the enclosure of the IBHX is supported from the dormant solids hoppers for CFB and IBHX located under the distribution grids.
  • the disclosure provides a support configuration wherein the membranes between the tubes of the enclosure walls are removed to define loose tubes that extend through the hopper walls to accommodate thermal expansion.
  • the disclosure provides a support configuration wherein a skirt is disposed inside the IBHX hopper to prevent gas leakage from the IBHX hopper to the CFB hopper around the enclosure supports.
  • the disclosure provides a support configuration wherein a secondary gas conduit is supported by the CFB hopper with a secondary gas duct carried by the IBHX enclosure with nozzles to provide secondary gas to the CFB.
  • a circulating fluidized bed (CFB) boiler comprising: a CFB reaction chamber having side walls and an open-bottom grid defining a floor at a lower end of the CFB reaction chamber for providing fluidizing gas into the CFB reaction chamber; at least one bubbling fluidized bed (BFB) located within a lower portion of the CFB reaction chamber and being bound by enclosure walls and the floor of the CFB reaction chamber, with the fluidizing gas feed to the BFB portion of the grid controlled separately from the fluidizing gas feed to the CFB portion of the grid; at least one controllable in-bed heat exchanger (IBHX), the IBHX occupying part of the CFB reaction chamber floor and being surrounded by the enclosure walls of the BFB; bottom-supported hoppers containing dormant solids disposed under the CFB and the BFB; the enclosure walls of the BFB being supported off the bottom-supported hoppers; the enclosure walls of the BFB are of cooled membrane gas-tight design around the perimeter of the BFB, including: at least one top opening for C
  • a circulating fluidized bed (CFB) boiler comprising: a CFB reaction chamber having walls and an open-bottom grid defining a floor at a lower end of the CFB reaction chamber for providing fluidizing gas into the CFB reaction chamber; at least one bubbling fluidized bed (BFB) located within a lower portion of the CFB reaction chamber and being bound by enclosure walls and the floor of the CFB reaction chamber, with the fluidizing gas feed to the BFB portion of the grid controlled separately from the fluidizing gas feed to the CFB portion of the grid; at least one controllable in-bed heat exchanger (IBHX), the IBHX occupying part of the CFB reaction chamber floor and being surrounded by the enclosure walls of the BFB; hoppers containing dormant solids disposed under the CFB and the BFB; and the enclosure walls of the BFB being supported off the bottom-supported hoppers.
  • a CFB reaction chamber having walls and an open-bottom grid defining a floor at a lower end of the CFB reaction chamber for providing fluidizing gas into the C
  • a circulating fluidized bed (CFB) boiler comprising: a CFB reaction chamber having walls and an open-bottom grid defining a floor at a lower end of the CFB reaction chamber for providing fluidizing gas into the CFB reaction chamber; at least one bubbling fluidized bed (BFB) located within a lower portion of the CFB reaction chamber and being bound by enclosure walls and the floor of the CFB reaction chamber, with the fluidizing gas feed to the BFB portion of the grid controlled separately from the fluidizing gas feed to the CFB portion of the grid; the enclosure walls of the BFB are of cooled membrane gas-tight design; at least one controllable in-bed heat exchanger (IBHX), the IBHX occupying part of the CFB reaction chamber floor and being surrounded by the enclosure walls of the BFB; hoppers containing dormant solids disposed under the CFB and the BFB; and the enclosure walls of the BFB being connected to at least one of the bottom-supported hoppers with supports and becoming of a loose design with sufficient flexibility for accommodating differences
  • a circulating fluidized bed (CFB) furnace 1 includes walls 2 (including roof 2a) and an in-bed heat exchanger (IBHX) 3 immersed in bubbling fluidized bed (BFB) 4.
  • the circulating fluidized bed of furnace 1 predominantly includes solids made up of the ash of fuel 5, sulfated sorbent 6 and, in some cases, external inert material 7 fed through at least one of walls 2 and fluidized by fluidizing gas (typically, primary air) 8 supplied through a distribution grid 9 fed from pipes 10.
  • fluidizing gas typically, primary air
  • Dormant solids below grid 9 effectively define a part of the furnace floor.
  • the dormant solids under CFB and BFB are contained in hoppers (26 and 27, correspondingly) equipped with outlets for draining solids from CFB and BFB (28 and 29, correspondingly). Pipes 10 and 25 are supported off hoppers 26 and 27, correspondingly (supports are not shown).
  • BFB 4 is separated from the CFB by an enclosure 30 made of gas-tight cooled membrane panels.
  • Enclosure 30 surrounds the perimeter of BFB 4 but is essentially open from the top allowing solids influx from CFB into BFB (arrow 19).
  • Enclosure 30 includes overflow ports (that can be formed as vertical slots connected to top opening 31; see Figure 3 ) 32, which lowest elevation essentially defines the height of BFB 4.
  • Enclosure 30 also includes underflow ports 34. Controlling rate of solids recycle 35 through underflow ports 34 allows controlling the heat duty of IBHX 3. The rate of solids recycle 35 is controlled by separately controlling (not shown) feed rate of fluidizing medium 22 to BFB plan areas adjacent to underflow ports 34.
  • the pressure within enclosure 30 equals the pressure outside of it at the elevation of the top of BFB 4. Due to higher bulk density of BFB compared to CFB, the pressure below that elevation is higher on the BFB side, i.e. within enclosure 30.
  • the highest pressure differential is at the elevation of the distribution grids (9 and 24, located essentially at the same elevation).
  • Cooled membrane panels 60 are used as stiffeners of enclosure walls 30 providing the rigidity necessary to withstand the pressure differential.
  • the height of panels 60 depends on the amount of heat transfer surface required for the furnace heat duty. They can extend all the way through the furnace roof 2A or be cut shorter and topped with headers 65, from which pipes 70 continue up to roof 2A.
  • the lower ends of panels 60 penetrate through hoppers 27 and terminate with headers 61.
  • Enclosure 30 is topped with a header 72 that is connected with the outside of the furnace through pipes 74. If temperature of the cooling medium in enclosure 30 and/or panels 60 differs from that of walls 2, corresponding penetrations through roof 2A are equipped with expansion joints 76 and 78. The lower part of enclosure 30 extends below grid 24. The weight of enclosure 30 is supported off hoppers 26 and 27.
  • An exemplary configuration of a supports 79 and 80 for supporting enclosure 30 is depicted in FIGS. 2 and 2A . Support 79 is welded to the walls of the hoppers 26 and 27 while support 80 is welded to membranes 81. Horizontal pads 82 and 83 are welded to supports 79 and 80, respectively.
  • FIGS. 2 and 2A depict one exemplary configuration but other support arrangements can be used to support enclosure 30 from one or both of hoppers 26 and 27. Below the support elevation, the membranes 81 in the panels forming enclosure 30 terminate, and the resulting configuration of loose tubes 84 provides flexibility to accommodate differences in thermal expansion of tubes 84 and hoppers 26 and 27 as tubes 84 penetrate the walls of hopper 26. Skirt 86 is attached to the inside of enclosure 30 above support 80 and extends into hopper 27.
  • Loose tubes 84 are connected to headers 88 outside hoppers 26 and 27.
  • IBHX 3 can be supported off platework between hoppers 27 or off enclosure 30 or some combination thereof. IBHX 3 terminates at headers 89.
  • Enclosure 30 also includes a duct 92 for supplying part of secondary gas (typically, secondary air) 95 through nozzles 98 into the CFB.
  • Nozzles 98 can be formed of enclosure 30 tubes.
  • Another part of secondary gas 95 is supplied through nozzles 99 on walls 2.
  • the combination of nozzles 98 and 99 allows effective coverage of furnace 1 plan area by secondary gas 95.
  • One type of nozzle that can be used is disclosed in U.S. Pat. No. 8,622,029 , the text of which is hereby incorporated by reference as though fully set forth herein. At certain conditions, e.g. for smaller furnace sizes, it is possible to provide an acceptable secondary gas coverage by using only nozzles 99 on walls 2. In such a configuration, duct 92 is not required and can be removed.
  • Duct 92 is supplied with secondary gas 95 through a conduit 102 made of membrane panels 104. As shown in Figure 4 , part of the panel 104 between duct 92 and conduit 102 turns into screen 105 to allow a passage for the secondary gas from conduit 102 into duct 92. Panels 104 at the upper end can terminate at header 72 and/or dedicated headers (not shown). Their lower ends extend downward to essentially the same elevation as where gas-tight BFB enclosure 30 turns into a loose-tube type design. At that elevation conduit 102 made of panels 104 is connected gas-tightly to plate-type conduit 106 that continues to the wall of hopper 26 and penetrates the wall.
  • Conduit 106 is equipped with expansion joints 107 on its both ends for accommodating its thermal expansion versus conduit 102 and hopper 26.
  • membrane panels 104 turn into loose tubes 108, which configuration allows accommodation of the difference in thermal expansion between tubes 108 and hopper 26 as the tubes penetrate the hopper wall and terminate at header 109.
  • Furnace walls 2 are supported off top steel 110 and expand downwards. Hoppers 26 and 27 have bottom supports 115 and expand upwards. A pressure seal allowing both expansions is provided by expansion joint 120 around the perimeter of furnace 1. At certain conditions, e.g. lower furnace height due to high fuel reactivity and/or relaxed combustion efficiency requirements and/or relaxed emissions requirements, etc., the entire boiler can be bottom-supported. This would eliminate the need in expansion joint 120.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
EP17175855.0A 2016-06-13 2017-06-13 Chaudière à lit fluidisé circulant avec échangeur de chaleur dans le lit supporté par le fond Withdrawn EP3306189A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662349627P 2016-06-13 2016-06-13
US15/618,913 US20170356642A1 (en) 2016-06-13 2017-06-09 Circulating fluidized bed boiler with bottom-supported in-bed heat exchanger

Publications (1)

Publication Number Publication Date
EP3306189A1 true EP3306189A1 (fr) 2018-04-11

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EP17175855.0A Withdrawn EP3306189A1 (fr) 2016-06-13 2017-06-13 Chaudière à lit fluidisé circulant avec échangeur de chaleur dans le lit supporté par le fond

Country Status (8)

Country Link
US (1) US20170356642A1 (fr)
EP (1) EP3306189A1 (fr)
CN (1) CN107490003A (fr)
BR (1) BR102017012587A2 (fr)
CL (1) CL2017001518A1 (fr)
CO (1) CO2017005825A1 (fr)
PH (1) PH12017000173A1 (fr)
RU (1) RU2017120537A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2915695B2 (es) * 2020-12-24 2023-01-13 Waste To Energy Advanced Solutions S L Instalacion y procedimiento de conversion termoquimica de un combustible solido en un gas de sintesis

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893426A (en) * 1974-03-25 1975-07-08 Foster Wheeler Corp Heat exchanger utilizing adjoining fluidized beds
US4891052A (en) 1989-02-21 1990-01-02 The Babcock & Wilcox Company Impingement type solids collector discharge restrictor
US4947804A (en) * 1989-07-28 1990-08-14 Foster Wheeler Energy Corporation Fluidized bed steam generation system and method having an external heat exchanger
US4992085A (en) 1990-01-08 1991-02-12 The Babcock & Wilcox Company Internal impact type particle separator
US5343830A (en) 1993-03-25 1994-09-06 The Babcock & Wilcox Company Circulating fluidized bed reactor with internal primary particle separation and return
US5378253A (en) 1993-09-28 1995-01-03 The Babcock & Wilcox Company Water/steam-cooled U-beam impact type article separator
WO1996005469A1 (fr) * 1994-08-17 1996-02-22 Foster Wheeler Energia Oy Reacteur a lit fluidise et procede d'utilisation
US5799593A (en) 1996-06-17 1998-09-01 Mcdermott Technology, Inc. Drainable discharge pan for impact type particle separator
US5809940A (en) 1997-05-23 1998-09-22 The Babcock & Wilcox Company Indirect cooling of primary impact type solids separator elements in a CFB reactor
US20030015150A1 (en) * 2001-07-17 2003-01-23 Felix Belin CFB with controllable in-bed heat exchanger
US20110073049A1 (en) * 2009-09-30 2011-03-31 Mikhail Maryamchik In-bed solids control valve
EP2312210A2 (fr) * 2009-09-30 2011-04-20 Babcock & Wilcox Power Generation Group, Inc. Lit fluidisé circulant avec injecteurs d'air secondaires dans le four
US20140102342A1 (en) * 2012-10-17 2014-04-17 Babcock & Wilcox Power Generation Group, Inc. In-bed solids control valve with improved reliability

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690512B1 (fr) * 1992-04-27 1994-09-09 Stein Industrie Réacteur à lit fluidisé circulant comportant des échangeurs extérieurs alimentés par la recirculation interne.
US5332553A (en) * 1993-04-05 1994-07-26 A. Ahlstrom Corporation Method for circulating solid material in a fluidized bed reactor
US5797334A (en) * 1997-02-12 1998-08-25 The Babcock & Wilcox Company Fluidized bed boiler with bed drain ash cooling and transfer
US6029612A (en) * 1997-07-07 2000-02-29 Foster Wheeler Energia Oy Fluidized bed reactor
FI110026B (fi) * 1997-09-12 2002-11-15 Foster Wheeler Energia Oy Leijupetikattilan arinarakenne
FI118977B (fi) * 1999-01-21 2008-05-30 Metso Power Oy Menetelmä leijukattilan palkkiarinan yhteydessä ja palkkiarina
DE102005005796A1 (de) * 2005-02-09 2006-08-17 Applikations- Und Technikzentrum Für Energieverfahrens-, Umwelt- Und Strömungstechnik (Atz-Evus) Verfahren und Vorrichtung zur thermochemischen Umsetzung eines Brennstoffs
FI118307B (fi) * 2006-05-18 2007-09-28 Metso Power Oy Leijukerroskattila ja menetelmä leijukerroskattilan pohjatuhkanjäähdyttimen muodostamiseksi
US8561557B2 (en) * 2009-09-30 2013-10-22 Babcock & Wilcox Power Generation Group, Inc. Primary oxidant feed to oxy-fired circulating fluidized bed (CFB)
FI122040B (fi) * 2009-11-10 2011-07-29 Foster Wheeler Energia Oy Menetelmä ja järjestely polttoaineen syöttämiseksi kiertoleijupetikattilaan
CN101818894B (zh) * 2010-04-29 2011-10-26 清华大学 一种循环流化床锅炉
CN102997231B (zh) * 2012-12-31 2015-06-24 中国科学院工程热物理研究所 大型循环流化床锅炉、布风装置和布风装置组件
PL2884169T3 (pl) * 2013-12-16 2016-12-30 Urządzenie ze złożem fluidalnym
CN204922961U (zh) * 2015-08-14 2015-12-30 东方电气集团东方锅炉股份有限公司 一种带内置换热器的多布风板流化床锅炉

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3893426A (en) * 1974-03-25 1975-07-08 Foster Wheeler Corp Heat exchanger utilizing adjoining fluidized beds
US4891052A (en) 1989-02-21 1990-01-02 The Babcock & Wilcox Company Impingement type solids collector discharge restrictor
US4947804A (en) * 1989-07-28 1990-08-14 Foster Wheeler Energy Corporation Fluidized bed steam generation system and method having an external heat exchanger
US4992085A (en) 1990-01-08 1991-02-12 The Babcock & Wilcox Company Internal impact type particle separator
US5343830A (en) 1993-03-25 1994-09-06 The Babcock & Wilcox Company Circulating fluidized bed reactor with internal primary particle separation and return
US5378253A (en) 1993-09-28 1995-01-03 The Babcock & Wilcox Company Water/steam-cooled U-beam impact type article separator
US5435820A (en) 1993-09-28 1995-07-25 The Babcock & Wilcox Company Water/steam-cooled U-beam impact type particle separator
WO1996005469A1 (fr) * 1994-08-17 1996-02-22 Foster Wheeler Energia Oy Reacteur a lit fluidise et procede d'utilisation
US5799593A (en) 1996-06-17 1998-09-01 Mcdermott Technology, Inc. Drainable discharge pan for impact type particle separator
US5809940A (en) 1997-05-23 1998-09-22 The Babcock & Wilcox Company Indirect cooling of primary impact type solids separator elements in a CFB reactor
US20030015150A1 (en) * 2001-07-17 2003-01-23 Felix Belin CFB with controllable in-bed heat exchanger
US6532905B2 (en) 2001-07-17 2003-03-18 The Babcock & Wilcox Company CFB with controllable in-bed heat exchanger
US20110073049A1 (en) * 2009-09-30 2011-03-31 Mikhail Maryamchik In-bed solids control valve
EP2312210A2 (fr) * 2009-09-30 2011-04-20 Babcock & Wilcox Power Generation Group, Inc. Lit fluidisé circulant avec injecteurs d'air secondaires dans le four
US8434430B2 (en) 2009-09-30 2013-05-07 Babcock & Wilcox Power Generation Group, Inc. In-bed solids control valve
US8622029B2 (en) 2009-09-30 2014-01-07 Babcock & Wilcox Power Generation Group, Inc. Circulating fluidized bed (CFB) with in-furnace secondary air nozzles
US20140102342A1 (en) * 2012-10-17 2014-04-17 Babcock & Wilcox Power Generation Group, Inc. In-bed solids control valve with improved reliability

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Steam/its generation and use", 2015, THE BABCOCK & WILCOX COMPANY
"Steam: Its Generation and Use", 2005, THE BABCOCK & WILCOX COMPANY, pages: 17 - 3

Also Published As

Publication number Publication date
US20170356642A1 (en) 2017-12-14
RU2017120537A (ru) 2018-12-14
CL2017001518A1 (es) 2018-04-20
PH12017000173A1 (en) 2018-07-23
BR102017012587A2 (pt) 2018-02-06
CO2017005825A1 (es) 2017-10-20
CN107490003A (zh) 2017-12-19

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