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    • 3. 发明申请
    • REGENERATIVE AIR PREHEATER DESIGN TO REDUCE COLD END FOULING
    • 再生空气预热器设计,以减少冷端
    • US20110303135A1
    • 2011-12-15
    • US12814812
    • 2010-06-14
    • James W. BirminghamJames D. Seebald
    • James W. BirminghamJames D. Seebald
    • F23N3/00F28D19/04F23L15/02
    • F28D19/041F28F27/006F28F27/02
    • An air preheater 100 is described having an air damper assembly 162 that partially restricts an air inlet 130 and a flue gas damper assembly 152 that partially restricts flue gas inlet 124 during periods of reduced boiler load. Restricting the flue gas inlet 124 reduces the effective surface area of the preheater causing more heat to pass to the cold end of the air preheater 100, reducing acid condensation and fouling. Restricting the gas inlet 124, increases gas velocity, thereby eroding accumulations in the air preheater 100, also reducing fouling. Restricting the air inlet 130 reduces the effective heat transfer surface area of the air preheater, which raises the gas temperature in the cold end of the air preheater and thereby reduces acid condensation and fouling.
    • 空气预热器100被描述为具有空气阻尼器组件162,该空气阻尼器组件162部分地限制在减少的锅炉负载期间部分地限制烟道气入口124的空气入口130和烟道气体阻尼器组件152。 限制烟气入口124减少预热器的有效表面积,导致更多的热量传递到空气预热器100的冷端,减少酸冷凝和结垢。 限制气体入口124,增加气体速度,从而侵蚀空气预热器100中的积聚,也减少了结垢。 限制空气入口130减少空气预热器的有效传热表面积,这提高了空气预热器冷端中的气体温度,从而减少了酸的冷凝和结垢。