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    • 54. 发明授权
    • Painting system using desiccant dehumidifier for conditioning and
removing VOCS from ventilation air to be returned to spray booth
    • 使用干燥剂除湿机进行涂装系统,用于调节和排除通风空气中的挥发性有机化合物,并返回喷雾室
    • US6010562A
    • 2000-01-04
    • US924819
    • 1997-09-05
    • Paul Jeffrey FlynnWilliam Carl NowackPhilip Leroy Carter
    • Paul Jeffrey FlynnWilliam Carl NowackPhilip Leroy Carter
    • B01D53/04B01D53/26B05B15/12B01D53/06
    • B01D53/0415B01D53/261B05B15/1222B05B15/1233B01D2253/106B01D2257/708B01D2257/80B01D2258/0258B01D2259/4009B05B15/1207Y02P70/36Y10S55/46
    • A painting system includes a paint spray booth ventilated by process air including a combination of outside make-up air and a portion of the exiting process air which is returned to the booth, the returned air being the main component of the combination. The humidity of the air in the paint spray booth is controlled by routing a first minor portion of the process air, exiting the booth, through a desiccant dehumidifier, which removes moisture and volatile organic compounds (VOCs) from this process air portion before it is sent back to the paint spray booth. The dehumidifier is designed so that at any given time the process air portion contacts only part of the desiccant bed while air heated to approximately 250.degree. F. in a paint cure oven is exhausted from the oven and directed through the remaining part of the desiccant bed in order to dry, and thus regenerate, the desiccant for continued use. The dehumidifier is designed so that a continual exchange of dried desiccant for moisture laden desiccant respectively takes place relative to the process and heated air streams. The heated air also removes a large portion of the volatile organic compounds removed from the first minor portion of the process air. A second minor portion of the process air exiting from the paint spray booth, equal to the volume of make-up air, and the heated regenerative air exiting the dehumidifier are routed through a control device, such as a thermal oxidizer, which destroys the volatile organic compounds contained in this air before exhausting it to the atmosphere.
    • 喷漆系统包括通过工艺空气通风的喷漆室,包括外部补充空气和返回到展台的出口处理空气的一部分的组合,返回的空气是组合的主要组成部分。 喷漆室中空气的湿度通过将工艺空气的第一个小部分排出空间通过干燥剂除湿器进行控制,干燥剂除湿器在该处理空气部分之前从该过程空气部分除去水分和挥发性有机化合物(VOC) 送回喷漆房。 除湿器设计成使得在任何给定时间,处理空气部分仅接触干燥剂床的一部分,同时在涂料固化炉中加热至约250°F的空气从炉中排出并引导通过干燥剂床的剩余部分 以便干燥并因此再生干燥剂以供继续使用。 除湿器的设计是为了分别在潮湿和干燥的干燥剂上连续交换潮湿的干燥剂。 加热的空气还除去从处理空气的第一次要部分去除的大部分挥发性有机化合物。 从喷漆室排出的处理空气的第二小部分等于补充空气的体积,并且离开除湿器的加热的再生空气通过诸如热氧化剂的控制装置路由,其破坏挥发性 将空气中的有机化合物排放到大气中。