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WO1994011673B1 - Method and apparatus for operating a circulating fluidized bed system - Google Patents

Method and apparatus for operating a circulating fluidized bed system

Info

Publication number
WO1994011673B1
WO1994011673B1 PCT/FI1993/000463 FI9300463W WO9411673B1 WO 1994011673 B1 WO1994011673 B1 WO 1994011673B1 FI 9300463 W FI9300463 W FI 9300463W WO 9411673 B1 WO9411673 B1 WO 9411673B1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion chamber
particles
return duct
bed
recited
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.)
Ceased
Application number
PCT/FI1993/000463
Other languages
French (fr)
Other versions
WO1994011673A1 (en
Filing date
Publication date
Priority claimed from US07/973,396 external-priority patent/US5341766A/en
Priority to DE69316991T priority Critical patent/DE69316991T2/en
Priority to EP93924628A priority patent/EP0667944B1/en
Priority to PL93308912A priority patent/PL176988B1/en
Priority to JP06511750A priority patent/JP3132662B2/en
Priority to DK93924628T priority patent/DK0667944T3/en
Application filed filed Critical
Priority to KR1019950701856A priority patent/KR100306026B1/en
Publication of WO1994011673A1 publication Critical patent/WO1994011673A1/en
Publication of WO1994011673B1 publication Critical patent/WO1994011673B1/en
Priority to FI952153A priority patent/FI104213B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Abstract

In association with a circulating fluidized bed reactor, a bed of particles is established in the return duct (34) for recycling particles from the particle separator (14) to the combustion chamber (12). Inlet openings (50) extend from the bed of particles into the combustion chamber, and the height of the particle bed is maintained above the inlet openings at a sufficient distance to form a gas seal. The particles in the bed are fluidized, and also transporting nozzles (52, 54, 56, 58, 59) are arranged at different levels for transporting the particles from the bed through the inlet openings into the combustion chamber. Heat exchangers (38), e.g. superheaters, may be provided in the bed to recover heat from the particles.

Claims

{ AMENDED CLAIMS
[received by the International Bureau on 10 June 1994 (10.06.94); i original claims 1 and 19 amended; remaining claims unchanged (2 pages)]
1. Method of operating a circulating fluidized bed reactor system, utilizing a combustion chamber, having a fluidized
5 bed of particles therein, a particle separator connected to a discharge opening in the upper part of the combustion chamber-, a return duct connected in its upper part to the particle separator and in its lower part to the combustion chamber through inlets comprising two or more superimposed 10 openings, and a gas outlet in the particle separator, the method comprising the steps of
(a) establishing a fast fluidized bed of solid particles in the combustion chamber so that a particle suspension comprising flue gases and solid particles entrained therein
15 is caused to flow upwardly in the combustion chamber,
(b) collecting solid particles separated from the gas and particle suspension,
(c) directing the collected solid particles into a the return duct,
20 (d) establishing a bed of solid particles in the return duct, to ensure that the bed of particles is above the level of the inlets, and
(e) introducing transporting gas into the return duct, for recycling particles from the bed therein through the inlets
25 into the combustion chamber.
2. A method as recited in claim 1 wherein the inlets comprise two or more superimposed openings opening directly into the combustion chamber from the return duct, and
30 wherein step (e) is practiced to introduce particles, directly from the bed into the combustion chamber.
3. A method as recited in claim 1 wherein the bed of particles is separated into transport and heat transfer
35 sections, and wherein step (e) is practiced to transport upwardly in the combustion chamber to establish a bed of solid particles in the return duct,
- inlet means, comprising at least two superimposed inlet openings on a wall, connecting the lower part of said return duct with the combustion chamber, and transporting gas nozzles disposed in operative association with the lower part of the return duct, for transporting particles from the bed towards the inlet means for discharging particles from said return duct into said combustion chamber.
20. A fluidized bed system as recited in claim 19 wherein said inlet means comprise at least two superimposed inlet openings arranged in a common wall between the return duct and said combustion chamber.
21. A fluidized bed system as recited in claim 19 wherein said inlet means comprise at least two superimposed inlet openings arranged in a wall between said return duct and a chamber, which has a further connection with said combustion chamber.
22. A fluidized bed system as recited in claim 19 wherein said inlet means comprise two or more superimposed horizontal or inclined slot like inlet conduits disposed in a common wall between said combustion chamber and said return duct.
23. A fluidized bed system as recited in claim 22 wherein said horizontal or inclined slot like conduits are of a gill type construction.
24. A fluidized bed system as recited in claim 22 wherein said inlet conduit is made of refractory material.
25. A fluidized bed system as recited in claim 22 wherein said inlet conduit is inserted in an opening formed by
PCT/FI1993/000463 1992-11-10 1993-11-09 Method and apparatus for operating a circulating fluidized bed system Ceased WO1994011673A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
KR1019950701856A KR100306026B1 (en) 1992-11-10 1993-11-09 Method and apparatus for driving a circulating fluidized bed system
EP93924628A EP0667944B1 (en) 1992-11-10 1993-11-09 Method and apparatus for operating a circulating fluidized bed system
PL93308912A PL176988B1 (en) 1992-11-10 1993-11-09 Method of and apparatus for starting a circulating fluidized bed system
JP06511750A JP3132662B2 (en) 1992-11-10 1993-11-09 Circulating fluidized bed reactor and operating method thereof
DK93924628T DK0667944T3 (en) 1992-11-10 1993-11-09 Method and apparatus for operating a circulating fluid bed system
DE69316991T DE69316991T2 (en) 1992-11-10 1993-11-09 METHOD AND DEVICE FOR OPERATING A SYSTEM WITH A CIRCULATING FLUID BED
FI952153A FI104213B (en) 1992-11-10 1995-05-05 Method and apparatus for operating a fluidized bed system according to the circulating bed principle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/973,396 US5341766A (en) 1992-11-10 1992-11-10 Method and apparatus for operating a circulating fluidized bed system
US973,396 1993-10-05

Publications (2)

Publication Number Publication Date
WO1994011673A1 WO1994011673A1 (en) 1994-05-26
WO1994011673B1 true WO1994011673B1 (en) 1994-07-21

Family

ID=25520843

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1993/000463 Ceased WO1994011673A1 (en) 1992-11-10 1993-11-09 Method and apparatus for operating a circulating fluidized bed system

Country Status (13)

Country Link
US (2) US5341766A (en)
EP (1) EP0667944B1 (en)
JP (1) JP3132662B2 (en)
KR (1) KR100306026B1 (en)
CN (1) CN1035360C (en)
AT (1) ATE163219T1 (en)
CA (1) CA2148920C (en)
DE (1) DE69316991T2 (en)
DK (1) DK0667944T3 (en)
ES (1) ES2115083T3 (en)
FI (1) FI104213B (en)
PL (1) PL176988B1 (en)
WO (1) WO1994011673A1 (en)

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US20140328729A1 (en) 2013-05-06 2014-11-06 Liang-Yuh Chen Apparatus for Preparing a Material of a Battery Cell
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