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1. (WO2001036873) METHOD AND APPARATUS FOR BURNING BROWN COAL
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/036873 International Application No.: PCT/FI1999/000956
Publication Date: 25.05.2001 International Filing Date: 18.11.1999
Chapter 2 Demand Filed: 14.06.2001
IPC:
F23C 6/04 (2006.01) ,F23C 9/00 (2006.01) ,F23D 1/02 (2006.01) ,F23K 1/04 (2006.01)
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
6
Combustion apparatus characterised by the combination of two or more combustion chambers
04
in series connection
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
9
Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
D
BURNERS
1
Burners for combustion of pulverulent fuel
02
Vortex burners, e.g. for cyclone-type combustion apparatus
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
K
FEEDING FUEL TO COMBUSTION APPARATUS
1
Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
04
Heating fuel prior to delivery to combustion apparatus
Applicants:
DERNJATIN, Pauli [FI/FI]; FI (UsOnly)
SAVOLAINEN, Kati [FI/FI]; FI (UsOnly)
MÄKI-MANTILA, Erkki [FI/FI]; FI (UsOnly)
FORTUM ENGINEERING OY [FI/FI]; Rajatorpantie 8 FIN-01600 Vantaa, FI (AllExceptUS)
Inventors:
DERNJATIN, Pauli; FI
SAVOLAINEN, Kati; FI
MÄKI-MANTILA, Erkki; FI
Agent:
SEPPO LAINE OY; Itämerenkatu 3 B FIN-00180 Helsinki, FI
Priority Data:
Title (EN) METHOD AND APPARATUS FOR BURNING BROWN COAL
(FR) PROCEDE ET APPAREIL DE BRULAGE DE HOUILLE BRUNE
Abstract:
(EN) Method for combusting brown coal in a tangentially fired furnace comprises mixing brown coal fuel with carrier gas and a necessary amount of flue gas from the furnace with the mix of fuel and carrier gas for drying the fuel to a moisture content suitable for combustion. The mix of fuel and gas is fed into a tangentially fired furnace at least one corner of the furnace so that the mix is directed towards the center of the furnace for forming a vortex in the center of the furnace. In order to ignite the fuel/gas mix, it is fed into the furnace through a feeding pipe having a stabilizer ring extending at least partially into the pipe at the end of the pipe and the amount of the flue gas in the fuel/gas mixture is adjusted so that the oxygen content of the mix is at least 15 %.
(FR) L'invention concerne un procédé de brûlage de houille brune dans un four à combustion tangentielle, qui consiste à mélanger de la houille brune à un gaz porteur et la quantité nécessaire de gaz de combustion provenant du four au mélange de carburant et de gaz porteur, de sorte que le carburant soit asséché et qu'il présente une teneur en humidité convenant à la combustion. Le mélange de carburant et de gaz est ensuite envoyé dans un four à combustion tangentielle, dans au moins un angle du four, de manière que le mélange soit envoyé vers le centre du four et qu'un vortex y soit formé. Afin d'induire son allumage, le mélange carburant/gaz est envoyé dans le four par un tuyau d'alimentation doté d'une bague stabilisatrice s'étendant au moins partiellement dans le tuyau, au niveau de son extrémité, et la quantité de gaz de combustion dans le mélange carburant/gaz est ajustée, de sorte que la teneur en oxygène du mélange soit d'au moins 15 %.
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Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, DK, DM, 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, 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, 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)
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)