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1. (WO1998049493) DRUM-TYPE BOILER WITH ENHANCED CIRCULATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049493 International Application No.: PCT/US1998/007091
Publication Date: 05.11.1998 International Filing Date: 08.04.1998
Chapter 2 Demand Filed: 20.11.1998
IPC:
F22B 1/18 (2006.01) ,F22B 29/04 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22
STEAM GENERATION
B
METHODS OF STEAM GENERATION; STEAM BOILERS
1
Methods of steam generation characterised by form of heating method
02
by exploitation of the heat content of hot heat carriers
18
the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
22
STEAM GENERATION
B
METHODS OF STEAM GENERATION; STEAM BOILERS
29
Steam boilers of forced-flow type
04
of combined-circulation type, i.e. in which convection circulation due to the difference in specific gravity between cold and hot water is promoted by additional measures, e.g. by injecting pressure-water temporarily
Applicants:
GUREVICH, Arkadiy, M. [US/US]; US
Inventors:
GUREVICH, Arkadiy, M.; US
Agent:
CAMORIANO, Theresa, Fritz; Wheat, Camoriano, Smith & Beres, PLC 8225 Shelbyville Road Louisville, KY 40222, US
Priority Data:
08/848,12428.04.1997US
Title (EN) DRUM-TYPE BOILER WITH ENHANCED CIRCULATION
(FR) CHAUDIERE A TAMBOUR AVEC CIRCULATION AMELIOREE
Abstract:
(EN) A drum-type boiler is provided. The boiler's evaporator is divided into two sections (116A, 116B) which are connected in parallel to the drum (112). The first evaporator section (116A) relies on the feedwater pump (138) to provide forced circulation. The second evaporator section (116B) relies primarily on natural circulation but may also be assisted by the feedwater pump. This design provides a boiler which is reliable under all operating conditions, including start-up, transient conditions, and steady state conditions, without requiring the use of circulating pumps or an auxiliary energy source (steam, water, gas, etc.).
(FR) L'invention concerne une chaudière à tambour. L'évaporateur de la chaudière est divisé en deux parties (116A, 116B) reliées en parallèle au tambour (112). La première partie (116A) a besoin de la pompe d'eau d'alimentation (138) pour réaliser la circulation forcée. La seconde partie (116B) repose principalement sur la circulation naturelle, mais peut également être assistée par la pompe d'eau d'alimentation. Cette conception donne une chaudière qui est fiable dans toutes les conditions de fonctionnement, y compris le démarrage, le régime transitoire et le régime permanent, sans qu'il soit nécessaire l'utiliser des pompes de circulation ou une source d'énergie auxiliaire (vapeur, eau, gaz, etc.).
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1998068944