摘要:
Procédé pour générer de la vapeur à haute pression et haute température, au moyen d'un générateur de vapeur industriel à récepteur solaire (1), de puissance supérieure à 100 MW, comportant au moins les étapes successives suivantes : - un mélange eau-vapeur est généré dans l'évaporateur (2) par transfert de chaleur provenant d'un flux solaire incident sur l'évaporateur (2) ; - le mélange eau-vapeur est séparé en eau saturée et en vapeur saturée dans le ballon de séparation (4), la vapeur saturée ayant une pression supérieure à 160 bar ; - l'eau d'alimentation est injectée dans le ballon mélangeur (5) où elle est mélangée avec l'eau saturée provenant du ballon de séparation (4), l'eau mélangée retournant ensuite vers l'évaporateur (2) par le conduit (9) de retour muni de la pompe de circulation (3),
de sorte que la température de l'eau mélangée entrant dans l'évaporateur (2) soit inférieure à la température de vapeur saturée, d'une valeur comprise entre 5 et 15°C.
摘要:
A circulating fluidized bed boiler is disclosed. The circulating fluidized bed boiler comprising: a furnace defined and enclosed by water walls, a ceiling and an air distributor, the water walls comprising front and rear walls and left and right side walls (AJ, TK) formed by water cooling tubes, and the water walls are provided with secondary air ports (Y) in the lower part thereof, and furnace flue gas outlets (AB, EF, IJ, KL, OP, ST) being provided in an upper part of the furnace; at least two cyclones connected with the furnace flue gas outlets (AB, EF, IJ, KL, OP, ST); a loop-seal is connected with solid outlets of the cyclones and the lower part of the furnace, respectively; and a flue gas duct connected with flue gas outlets of the cyclones wherein the water cooling wall tubes of the water wall form at least one vertical columnar recessed segment (BCDE, FGHI, SRQP, ONML) recessed toward the inside of the furnace, and the at least one columnar recessed segment (BCDE, FGHI, SRQP, ONML) extends at least 15% of the furnace height in a vertical direction.
摘要:
The invention relates to a steam generator (1) comprising a combustion chamber having a peripheral wall (2) formed at least partially from gas-proof, welded steam generator pipes, at least two additional inner walls (4, 8) formed at least partially from additional steam generator pipes which are arranged inside the combustion chamber, and said inner walls are connected one behind the other on the flow medium side by an intermediate collector (6). The aim of the invention is to provide a steam generator which has a particularly high service life and is particularly reliable. Said flow medium on the inlet (12) of the inner wall (4) upstream of the intermediate collector (6) has a lower temperature than that of the flow medium on an inlet (10) of the peripheral wall (2).
摘要:
A method of assembling a radiant cooler includes providing a vessel shell that defines a gas flow passage therein that extends generally axially through the vessel shell, forming a tube cage from coupling a plurality of cooling tubes together to form a tube cage defined by a plurality of chevron-shaped projections that extend circumferentially about a center axis of the tube cage, each chevron- shaped projection includes a first side and a second side coupled together a tip, circumferentially- adjacent pairs of projections coupled together such that a valley is defined between each pair of circumferentially-spaced projections, each of the projection tips is positioned radially outward from each of the valleys, and orienting the tube cage within the vessel shell such that the tube cage is in flow communication with the flow passage.
摘要:
The invention relates to a heat exchanger (100) for an interior space of a combustion plant, comprising a plurality of heat exchanger pipes (11) extending in parallel over a defined length range (H), which heat exchanger pipes are altogether surrounded by a refractory protective lining (20) over said length range. Between the heat exchanger pipes (11) and the protective lining (20), at least one intermediate space (30) is formed. The heat exchanger further comprises gas supply means for supplying a protective gas to the at least one intermediate space (30). Together with webs (12) that mechanically connecting the heat exchanging pipes, the heat exchanger pipes (11) form a pipe wall (10). The at least one intermediate space (30) between the heat exchanger pipes (11) and the protective lining (20) is formed on both sides of the pipe wall (10). The gas supply means comprise a gas distribution box (40) having at least one gas inlet opening (41) for the protective gas and a plurality of gas outlet openings (42), which terminate in the at least one intermediate space (30) between the heat exchanger pipes (11) and the protective lining (20).
摘要:
A solar power generation system includes a solar receiver disposed on a tower that receives radiant heat reflected from a field of solar collectors. The solar receiver includes an evaporator having a plurality of vertically oriented tubes to form a panel for receiving a fluid, such as water and/or steam, wherein the tubes have a rifled internal surface. The fluid within the tubes has a mass flow greater than 0.2×106 lb/hr/ft3 at a pressure in the range of 100-2850 psia, wherein radiant heat fluxes on the outside of the tubes exceed 185,00 but/hr/ft2.