FI952154A - Menetelmä ja laite kiertomassatyyppisen leijukerrosreaktorisysteemin käyttämiseksi - Google Patents

Menetelmä ja laite kiertomassatyyppisen leijukerrosreaktorisysteemin käyttämiseksi Download PDF

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Publication number
FI952154A
FI952154A FI952154A FI952154A FI952154A FI 952154 A FI952154 A FI 952154A FI 952154 A FI952154 A FI 952154A FI 952154 A FI952154 A FI 952154A FI 952154 A FI952154 A FI 952154A
Authority
FI
Finland
Prior art keywords
bed
heat exchange
fluidized bed
particle
operating
Prior art date
Application number
FI952154A
Other languages
English (en)
Swedish (sv)
Other versions
FI104214B (fi
FI952154A0 (fi
FI104214B1 (fi
Inventor
Timo Hyppaenen
Original Assignee
Ahlstroem Oy
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
Priority claimed from US07/973,396 external-priority patent/US5341766A/en
Application filed by Ahlstroem Oy filed Critical Ahlstroem Oy
Priority to FI952154A priority Critical patent/FI104214B1/fi
Publication of FI952154A0 publication Critical patent/FI952154A0/fi
Publication of FI952154A publication Critical patent/FI952154A/fi
Application granted granted Critical
Publication of FI104214B publication Critical patent/FI104214B/fi
Publication of FI104214B1 publication Critical patent/FI104214B1/fi

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/26—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/1836—Heating and cooling the reactor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/38—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed containing a rotatable device or being subject to rotation or to a circulatory movement, i.e. leaving a vessel and subsequently re-entering it
    • B01J8/384—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed containing a rotatable device or being subject to rotation or to a circulatory movement, i.e. leaving a vessel and subsequently re-entering it being subject to a circulatory movement only
    • B01J8/388—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed containing a rotatable device or being subject to rotation or to a circulatory movement, i.e. leaving a vessel and subsequently re-entering it being subject to a circulatory movement only externally, i.e. the particles leaving the vessel and subsequently re-entering it
    • 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
    • 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
    • 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
    • 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
    • F23C10/04—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 to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
    • F23C10/08—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 to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
    • F23C10/10—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 to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00026—Controlling or regulating the heat exchange system
    • B01J2208/00035—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2208/00044—Temperature measurement
    • B01J2208/00061—Temperature measurement of the reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00026—Controlling or regulating the heat exchange system
    • B01J2208/00035—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2208/00079—Fluid level measurement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00026—Controlling or regulating the heat exchange system
    • B01J2208/00035—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2208/00088—Flow rate measurement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00106—Controlling the temperature by indirect heat exchange
    • B01J2208/00115—Controlling the temperature by indirect heat exchange with heat exchange elements inside the bed of solid particles
    • B01J2208/00132—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00106—Controlling the temperature by indirect heat exchange
    • B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
    • B01J2208/00212—Plates; Jackets; Cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00327—Controlling the temperature by direct heat exchange
    • B01J2208/00336—Controlling the temperature by direct heat exchange adding a temperature modifying medium to the reactants
    • B01J2208/00353—Non-cryogenic fluids
    • B01J2208/00371—Non-cryogenic fluids gaseous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00477—Controlling the temperature by thermal insulation means
    • B01J2208/00495—Controlling the temperature by thermal insulation means using insulating materials or refractories
    • 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
    • F23C2206/101—Entrained or fast fluidised 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 
    • F23C2206/00—Fluidised bed combustion
    • F23C2206/10—Circulating fluidised bed
    • F23C2206/103—Cooling recirculating particles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
FI952154A 1992-11-10 1995-05-05 Menetelmä ja laite kiertomassatyyppisen leijukerrosreaktorisysteemin käyttämiseksi FI104214B1 (fi)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI952154A FI104214B1 (fi) 1992-11-10 1995-05-05 Menetelmä ja laite kiertomassatyyppisen leijukerrosreaktorisysteemin käyttämiseksi

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US97339692 1992-11-10
US07/973,396 US5341766A (en) 1992-11-10 1992-11-10 Method and apparatus for operating a circulating fluidized bed system
US08/089,810 US5840258A (en) 1992-11-10 1993-07-12 Method and apparatus for transporting solid particles from one chamber to another chamber
US8981093 1993-07-12
PCT/FI1993/000465 WO1994011671A1 (en) 1992-11-10 1993-11-09 Method and apparatus for operating a circulating fluidized bed reactor system
FI9300465 1993-11-09
FI952154A FI104214B1 (fi) 1992-11-10 1995-05-05 Menetelmä ja laite kiertomassatyyppisen leijukerrosreaktorisysteemin käyttämiseksi
FI952154 1995-05-05

Publications (4)

Publication Number Publication Date
FI952154A0 FI952154A0 (fi) 1995-05-05
FI952154A true FI952154A (fi) 1995-07-07
FI104214B FI104214B (fi) 1999-11-30
FI104214B1 FI104214B1 (fi) 1999-11-30

Family

ID=26780967

Family Applications (1)

Application Number Title Priority Date Filing Date
FI952154A FI104214B1 (fi) 1992-11-10 1995-05-05 Menetelmä ja laite kiertomassatyyppisen leijukerrosreaktorisysteemin käyttämiseksi

Country Status (13)

Country Link
US (1) US5840258A (fi)
EP (1) EP0682760B1 (fi)
JP (1) JP3118259B2 (fi)
KR (1) KR100338695B1 (fi)
CN (1) CN1035361C (fi)
AT (1) ATE163217T1 (fi)
CA (1) CA2148925C (fi)
DE (1) DE69317001T2 (fi)
DK (1) DK0682760T3 (fi)
ES (1) ES2115084T3 (fi)
FI (1) FI104214B1 (fi)
PL (1) PL176588B1 (fi)
WO (1) WO1994011671A1 (fi)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7485454B1 (en) 2000-03-10 2009-02-03 Bioprocessors Corp. Microreactor
IES20000617A2 (en) * 2000-08-02 2002-02-20 Millipore Ireland Bv Optical scattering monitor
US9163829B2 (en) * 2007-12-12 2015-10-20 Alstom Technology Ltd Moving bed heat exchanger for circulating fluidized bed boiler
TW200942346A (en) * 2008-04-11 2009-10-16 Foxnum Technology Co Ltd Spring separation apparatus
US9163830B2 (en) * 2009-03-31 2015-10-20 Alstom Technology Ltd Sealpot and method for controlling a solids flow rate therethrough
FI20096170A (fi) * 2009-11-10 2011-05-11 Foster Wheeler Energia Oy Menetelmä ja järjestely polttoaineen syöttämiseksi kiertoleijupetikattilaan
FI122040B (fi) * 2009-11-10 2011-07-29 Foster Wheeler Energia Oy Menetelmä ja järjestely polttoaineen syöttämiseksi kiertoleijupetikattilaan
FI122189B (fi) * 2009-12-21 2011-09-30 Foster Wheeler Energia Oy Menetelmä ja järjestely lämmön talteenottamiseksi palamisprosessin pohjatuhkasta
FI123548B (fi) * 2010-02-26 2013-06-28 Foster Wheeler Energia Oy Leijupetireaktorijärjestely
US20110226195A1 (en) * 2010-03-18 2011-09-22 Foster Wheeler North America Corp. Wall Construction for a Boiler Arrangement
CN102519528B (zh) * 2011-12-29 2014-02-26 中国科学院过程工程研究所 一种循环流化床固体通量测量方法及测量系统
EP2884167A1 (en) * 2013-12-16 2015-06-17 Doosan Lentjes GmbH Fluidized bed apparatus
EP2884168A1 (en) * 2013-12-16 2015-06-17 Doosan Lentjes GmbH Fluidized bed apparatus and mounting components
PL3054215T3 (pl) * 2015-02-04 2017-08-31 Doosan Lentjes Gmbh Wymiennik ciepła ze złożem fluidalnym
DK3130849T3 (en) 2015-08-11 2018-09-24 Doosan Lentjes Gmbh Circulating fluid bed furnace
DK3311073T3 (da) 2016-09-07 2020-07-20 Doosan Lentjes Gmbh Cirkulerende fluidiseret lejeapparat
CN107763593A (zh) * 2017-11-21 2018-03-06 贵州新能源开发投资股份有限公司 一种纯燃高钠煤两级中温分离循环流化床过热蒸汽锅炉
FI129147B (fi) 2017-12-19 2021-08-13 Valmet Technologies Oy Kaasulukon lämmönvaihtimella varustettu leijupetikattila

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US2819890A (en) * 1955-06-14 1958-01-14 Rosa Josef Counter-current recirculating device for the exchange of heat between a gas and a finely granulated material
US2985515A (en) * 1958-03-05 1961-05-23 Union Carbide Corp Fluidized solids contacting system
GB1397800A (en) * 1972-09-01 1975-06-18 Coal Industry Patents Ltd Fluidised bed combusters
SE421215B (sv) * 1980-02-07 1981-12-07 Hans Anders Bertil Rydstad Forfarande for tetning vid fluidiserad bedd samt anordning for utforande av forfarandet
US4333909A (en) * 1980-05-09 1982-06-08 Foster Wheeler Energy Corporation Fluidized bed boiler utilizing precalcination of acceptors
CA1225292A (en) * 1982-03-15 1987-08-11 Lars A. Stromberg Fast fluidized bed boiler and a method of controlling such a boiler
US4457289A (en) * 1982-04-20 1984-07-03 York-Shipley, Inc. Fast fluidized bed reactor and method of operating the reactor
US4672918A (en) * 1984-05-25 1987-06-16 A. Ahlstrom Corporation Circulating fluidized bed reactor temperature control
US5202099A (en) * 1985-08-01 1993-04-13 Ethyl Corporation Angle of repose valve
US4688521A (en) * 1986-05-29 1987-08-25 Donlee Technologies Inc. Two stage circulating fluidized bed reactor and method of operating the reactor
SE457661B (sv) * 1986-06-12 1989-01-16 Lars Axel Chambert Saett och reaktor foer foerbraenning i fluidiserad baedd
DE3715516A1 (de) * 1987-05-09 1988-11-17 Inter Power Technologie Wirbelschichtfeuerung
US4896717A (en) * 1987-09-24 1990-01-30 Campbell Jr Walter R Fluidized bed reactor having an integrated recycle heat exchanger
DK120288D0 (da) * 1988-03-04 1988-03-04 Aalborg Boilers Fluidbed forbraendigsreaktor samt fremgangsmaade til drift af en fluidbed forbraendingsreaktor
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US5069171A (en) * 1990-06-12 1991-12-03 Foster Wheeler Agency Corporation Fluidized bed combustion system and method having an integral recycle heat exchanger with a transverse outlet chamber
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US5341766A (en) * 1992-11-10 1994-08-30 A. Ahlstrom Corporation Method and apparatus for operating a circulating fluidized bed system

Also Published As

Publication number Publication date
EP0682760A1 (en) 1995-11-22
ATE163217T1 (de) 1998-02-15
CN1035361C (zh) 1997-07-09
ES2115084T3 (es) 1998-06-16
KR100338695B1 (ko) 2002-10-18
FI104214B (fi) 1999-11-30
DE69317001D1 (de) 1998-03-19
DK0682760T3 (da) 1998-09-23
DE69317001T2 (de) 1998-08-13
CN1088478A (zh) 1994-06-29
US5840258A (en) 1998-11-24
CA2148925C (en) 1998-12-08
EP0682760B1 (en) 1998-02-11
JPH08503290A (ja) 1996-04-09
PL176588B1 (pl) 1999-06-30
KR950704643A (ko) 1995-11-20
JP3118259B2 (ja) 2000-12-18
FI952154A0 (fi) 1995-05-05
FI104214B1 (fi) 1999-11-30
PL308898A1 (en) 1995-09-04
CA2148925A1 (en) 1994-05-26
WO1994011671A1 (en) 1994-05-26

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