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    • 6. 发明授权
    • Fluidized bed systems and methods including micro-jet flow
    • 流化床系统和方法包括微喷流
    • US08118243B2
    • 2012-02-21
    • US11937736
    • 2007-11-09
    • Robert PfefferJose A. QuevedoJuergen Flesch
    • Robert PfefferJose A. QuevedoJuergen Flesch
    • B02C19/00
    • B01J8/32B01F3/18B01F13/02B01F13/0272B01J8/1818B01J8/1872B82Y15/00B82Y30/00
    • Methods and systems for enhancing fluidization of nanoparticle and/or nanoagglomerates are provided. A fluidization chamber is provided with a fluidizing medium directed in a first fluidizing direction, e.g., upward into and through a bed containing a volume of nanoparticles and/or nanopowders. A second source of air/gas flow is provided with respect to the fluidization chamber, the secondary air/gas flow generally being oppositely directed relative to the fluidizing medium. Turbulence created by the secondary gas flow is advantageously effective to aerate the agglomerates and the shear generated by the jet is advantageously effective to break apart nanoagglomerates and/or reduce the tendency for nanoagglomerates to form or reform. A downwardly directed source of secondary gas flow located near the main gas distributor leads to full fluidization of the entire amount of powder in the column. The oppositely directed fluid flow facilitates powder circulation within the fluidization chamber, thereby enhancing fluidization results.
    • 提供了用于增强纳米颗粒和/或纳米团聚体的流化的方法和系统。 流化室设置有以第一流化方向(例如向上)流入并穿过含有一定体积纳米颗粒和/或纳米粉末的床的流化介质。 相对于流化室提供第二气/气流源,二次空气/气流通常相对于流化介质相反地定向。 由二次气流产生的湍流有利于使附聚物充气,并且由射流产生的剪切有利于有效地分离纳米颗粒和/或降低纳米颗粒形成或改性的倾向。 位于主气体分配器附近的向下定向的二次气流源导致柱中全部粉末的充分流化。 相反导向的流体流动促进流化室内的粉末循环,从而增强流化结果。
    • 8. 发明申请
    • Fluidized Bed Systems And Methods Including Micro-Jet Flow
    • 流化床系统和包括微喷流的方法
    • US20080179433A1
    • 2008-07-31
    • US11937736
    • 2007-11-09
    • Robert PfefferJose A. QuevedoJuergen Flesch
    • Robert PfefferJose A. QuevedoJuergen Flesch
    • B02C19/06
    • B01J8/32B01F3/18B01F13/02B01F13/0272B01J8/1818B01J8/1872B82Y15/00B82Y30/00
    • Methods and systems for enhancing fluidization of nanoparticle and/or nanoagglomerates are provided. A fluidization chamber is provided with a fluidizing medium (e.g., a fluidizing gas) directed in a first fluidizing direction, e.g., upward into and through a bed containing a volume of nanoparticles and/or nanopowders. A second source of air/gas flow is provided with respect to the fluidization chamber, the secondary air/gas flow generally being oppositely (or substantially oppositely) directed relative to the fluidizing medium. Turbulence created by the secondary gas flow, e.g., a jet from a micro-jet nozzle, is advantageously effective to aerate the agglomerates and the shear generated by the jet is advantageously effective to break apart nanoagglomerates and/or reduce the tendency for nanoagglomerates to form or reform. A downwardly directed source of secondary gas flow located near the main gas distributor leads to full fluidization of the entire amount of powder in the column. In addition, the oppositely directed fluid flow facilitates powder circulation within the fluidization chamber, thereby enhancing fluidization results. Use of oppositely directed fluid flow is believed to transition a bed that is exhibiting agglomerate bubbling fluidization (ABF) behavior into a bed that exhibits agglomerate particulate fluidization (APF) behavior
    • 提供了用于增强纳米颗粒和/或纳米团聚体的流化的方法和系统。 流化室设置有以第一流化方向(例如向上)引导入并穿过含有一定体积的纳米颗粒和/或纳米粉末的床的流化介质(例如,流化气体)。 相对于流化室设置第二气/气流源,二次空气/气体流通常相对于流化介质相反(或大致相反地)流动。 由次级气流产生的湍流,例如来自微喷嘴的射流,有利于使附聚物充气,并且由射流产生的剪切有利于有效地分离纳米团聚体和/或降低纳米颗粒形成的趋势 或改革。 位于主气体分配器附近的向下定向的二次气流源导致柱中全部粉末的充分流化。 此外,相反导向的流体流动促进流化室内的粉末循环,从而增强流化结果。 认为使用相反导向的流体流动将使附聚发泡流化(ABF)行为的床转变为显示附聚颗粒流化(APF)行为的床