CIRCULATING FLUIDIZED BED BOILER

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...

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Bibliographische Detailangaben
Hauptverfasser:	LI, SHIYUAN, SUN, YUNKAI, LV, QINGGANG, WANG, DONGYU, BAO, SHAOLIN, GAO, MING, SONG, GUOLIANG
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	AIR BLASTING CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FORCOMBUSTION CHAMBERS, e.g. FIREBRIDGES COMBUSTION APPARATUS COMBUSTION PROCESSES DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDEDFOR DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS INCOMBUSTION CHAMBERS HEATING LIGHTING MECHANICAL ENGINEERING METHODS OF STEAM GENERATION METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTIONAPPARATUS STEAM BOILERS STEAM GENERATION WEAPONS
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Beschreibung
Zusammenfassung:	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.