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Pub. No.: WO/2001/035020 International Application No.: PCT/FI2000/000974
Publication Date: 17.05.2001 International Filing Date: 09.11.2000
Chapter 2 Demand Filed: 25.05.2001
IPC:
F22B 31/00 (2006.01) ,F23C 10/10 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22
STEAM GENERATION
B
METHODS OF STEAM GENERATION; STEAM BOILERS
31
Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
C
METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN AIR
10
Apparatus in which combustion takes place in a fluidised bed of fuel or other particles
02
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
04
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
08
characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
10
the separation apparatus being located outside the combustion chamber
Applicants: HYPPÄNEN, Timo[FI/FI]; FI (UsOnly)
KAUPPINEN, Kari[FI/FI]; FI (UsOnly)
FOSTER WHEELER ENERGIA OY[FI/FI]; Nuijamiestentie 3 FIN-00400 Helsinki, FI (AllExceptUS)
Inventors: HYPPÄNEN, Timo; FI
KAUPPINEN, Kari; FI
Agent: FOSTER WHEELER ENERGIA OY; Patent Department Antintie 3 P.O. Box 66 FIN-48601 Karhula, FI
Priority Data:
1999241910.11.1999FI
Title (EN) CIRCULATING FLUIDIZED BED REACTOR
(FR) REACTEUR A LIT FLUIDISE CIRCULANT
Abstract:
(EN) A circulating fluidized bed reactor comprising a furnace (20), defined by a substantially vertical and planar first wall (12), and a particle separator having a return duct (40) adjacent said first wall. In the lower part of the return duct is arranged a gas seal adjacent a planar tube wall, which wall is said planar wall (12) or a wall (16) defining a space in gas flow connection with the furnace. The width of the horizontal cross section of the lower part of the return duct, measured in the direction of the first wall, is larger than its depth, measured perpendicular to the width. The gas seal includes a seal structure comprising water tubes bent from said tube wall (12, 16).
(FR) L'invention porte sur un réacteur à lit fluidisé circulant comportant un four (20), délimité par une première paroi (12) sensiblement verticale et plane, et un séparateur de particules présentant un conduit de retour (40) contigu à ladite paroi. A la partie inférieure du conduit de retour se trouve un joint étanche aux gaz contigu à la paroi plane du tube, ladite paroi étant la susdite paroi plane (12) ou une paroi (16) délimitant un espace communiquant pour les gaz avec le four. La largeur de la section transversale horizontale de la partie inférieure du conduit de retour mesurée dans la direction de la première paroi est plus importante que sa profondeur mesurée perpendiculairement à ladite largeur. Le joint étanche aux gaz comporte une structure de tubes à eau recourbés à partir de ladite paroi du tube (12, 16).
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CR, CU, CZ, DE, DK, DM, DZ, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)