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    • 7. 发明授权
    • Process and system for freeze concentration using ultrasonic nucleation
useful in effluent processing
    • 使用超声波成核的冷冻浓缩过程和系统可用于废水处理
    • US5966966A
    • 1999-10-19
    • US82169
    • 1998-05-20
    • Gregory D. BotsarisRu-Ying Qian
    • Gregory D. BotsarisRu-Ying Qian
    • B01D9/00B01D9/04
    • B01D9/0013
    • A freeze concentration method separates the nucleation and the growth processes at least to the extent necessary to enable nucleation and crystal growth to occur at different temperatures. Nucleation, however, is triggered by a sonicator, i.e., ultrasonic radiation. This provides excellent control of the process since the variables of the input sonic energy are adjusted easily. Most importantly, the use of ultrasound permits nucleation at low supercooling. The consequences of this are: an inexpensive plain--as opposed to the more complex and expensive scraped-surface--heat exchanger can be used since the coolant temperature is only slightly lower than that of the solution, preventing ice scaling in the heat exchanger; the higher coolant temperature leads to savings also in the operation costs. In addition ultrasonic nucleators are easily scaled-up to treating the large-volume effluents from industrial plants. The only way to scale-up scraped-surface nucleators is by using multiple nucleators in parallel.
    • 冷冻浓缩法将成核和生长过程至少分离成使得成核和晶体生长在不同温度下发生所必需的程度。 然而,成核由超声波器即超声波辐射触发。 由于输入声波能量的变量容易调整,因此可以很好地控制过程。 最重要的是,使用超声波可以在低过冷度下成核。 其结果是:廉价的平面 - 与更复杂和更昂贵的刮表面热交换器相反,因为冷却剂温度仅略低于溶液的温度,防止热交换器中的冰结垢; 较高的冷却液温度也可以节省运营成本。 此外,超声波成核剂容易扩大到处理来自工厂的大容积流出物。 刮除表面成核剂的唯一方法是平行使用多个成核剂。