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    METHOD AND DEVICE FOR RECYCLING AND PURIFYING WATER VAPOR FROM COAL DRYING PROCESS
    1.
    发明申请
    METHOD AND DEVICE FOR RECYCLING AND PURIFYING WATER VAPOR FROM COAL DRYING PROCESS 有权
    从煤炭干燥过程中回收和净化水蒸气的方法和装置

    公开(公告)号：US20140262738A1

    公开(公告)日：2014-09-18

    申请号：US14107681

    申请日：2013-12-16

    申请人： National Engineering Research Center of Drying Technology and Equipment ,  TIANHUA INSTITUTE OF CHEMICAL MACHINERY AND AUTOMATION CO., LTD.

    发明人： Xu Zhao ,  Maikui Zhang ,  Tao Shen ,  Zhongfu Zhan ,  Yongpeng Tan ,  Min Jia ,  Tianbao Wang ,  Xiaoling Xie

    IPC分类号： C02F1/06

    CPC分类号： C02F1/06 ,  B01D3/06 ,  B01D5/00 ,  B01D5/0027 ,  B01D5/003 ,  B01D5/0078 ,  B01D5/0081 ,  B01D5/0084 ,  B01D5/0087 ,  B01D5/009 ,  B01D5/0093 ,  B01D53/002 ,  F28B3/00 ,  F28C1/02

    摘要： A method and device are provided for purifying and recycling water vapor from a coal drying process. Included are a temperature-lowering and dehumidifying process, a flash distillation stripping process, and a vacuum condensing process. A condensing tower receives a temperature-lowered exhaust gas with high humidity from a cooling tube and a condensed water of 5˜60° C. from a flash distillation tank, allowing the exhaust gas and the condensed water to contact each other in a vapor-liquid reverse manner, to lower the temperature and dehumidify the exhaust gas. The flash distillation tank performs a vacuum flash distillation to the condensing water pumped therein from the condensing tower. Water vapor of 5˜60° C. evaporated through flash distillation in the flash distillation tank enters into the demisting washer to be dehumidified and then is condensed. The condensed water in the vapor condenser is transferred into a recycled water tank. Non-condensable gas is discharged out.

    摘要翻译： 提供了一种从煤干燥过程中净化和回收水蒸汽的方法和装置。 包括降温和除湿过程，闪蒸蒸馏汽提过程和真空冷凝过程。 冷凝塔从闪蒸罐接收来自冷却管的冷却管和5〜60℃的冷凝水的高温废气，使得废气和冷凝水彼此接触， 液体反向，降低温度并对排气进行除湿。 闪蒸罐对从冷凝塔泵送的冷凝水进行真空闪蒸。 在闪蒸蒸馏罐中通过快速蒸馏蒸发的5〜60℃的水蒸气进入除油洗涤器中进行除湿，然后冷凝。 将蒸汽冷凝器中的冷凝水转移到再循环水箱中。 不可冷凝气体排出。