公开(公告)号：US20120192449A1

公开(公告)日：2012-08-02

申请号：US13361485

申请日：2012-01-30

申请人： Robert Pfeffer ,  Jose A. Quevedo ,  Juergen Flesch

发明人： Robert Pfeffer ,  Jose A. Quevedo ,  Juergen Flesch

IPC分类号： F26B3/08 ,  B82Y30/00

CPC分类号： B01J8/32 ,  B01F3/18 ,  B01F13/02 ,  B01F13/0272 ,  B01J8/1818 ,  B01J8/1872 ,  B82Y15/00 ,  B82Y30/00

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20120140588A1

公开(公告)日：2012-06-07

申请号：US11937787

申请日：2007-11-09

申请人： Robert Pfeffer ,  Jose A. Quevedo ,  Juergen Flesch

发明人： Robert Pfeffer ,  Jose A. Quevedo ,  Juergen Flesch

IPC分类号： B01F13/02 ,  B01F3/18 ,  B82Y30/00

CPC分类号： B01J8/32 ,  B01F3/18 ,  B01F13/02 ,  B01F13/0272 ,  B01J8/1818 ,  B01J8/1872 ,  B82Y15/00 ,  B82Y30/00

摘要： Methods and systems for enhancing fluidization of nanoparticle and/or nanoagglomerates and for mixing and blending nanoparticle/nanoagglomerate systems at the nanoscale 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 and mixing/blending results.

摘要翻译： 提供了用于增强纳米颗粒和/或纳米团聚体的流化和用于在纳米尺度下混合和混合纳米颗粒/纳米团聚体系的方法和系统。 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，有利于使附聚物通气，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，从而增强流化和混合/混合结果。

公开(公告)号：US08439283B2

公开(公告)日：2013-05-14

申请号：US13361485

申请日：2012-01-30

申请人： Robert Pfeffer ,  Jose A. Quevedo ,  Juergen Flesch

发明人： Robert Pfeffer ,  Jose A. Quevedo ,  Juergen Flesch

IPC分类号： B02C19/06 ,  B02C23/00

CPC分类号： B01J8/32 ,  B01F3/18 ,  B01F13/02 ,  B01F13/0272 ,  B01J8/1818 ,  B01J8/1872 ,  B82Y15/00 ,  B82Y30/00

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07905433B2

公开(公告)日：2011-03-15

申请号：US12142883

申请日：2008-06-20

申请人： Robert Pfeffer ,  Jose A. Quevedo

发明人： Robert Pfeffer ,  Jose A. Quevedo

IPC分类号： B02C19/00

CPC分类号： B01J8/1818 ,  B01J8/1827 ,  B01J8/1872 ,  B01J8/22 ,  B01J8/42 ,  B01J19/10 ,  B01J2208/00681 ,  B01J2208/025 ,  B01J2208/026

摘要： Systems and methods for fluidization of particle and/or powder systems with reduced generation of static electricity are disclosed. The systems/methods are particularly advantageous for fluidization of nanoparticle and/or nanopowder systems, where the generation and/or presence of static electricity is a significant fluidization issue. The systems and methods generally involve the addition of an alcohol or other solvent to a fluidization gas to be introduced to the fluidization chamber, e.g., by bubbling the fluidization gas through a volume of solvent/alcohol, to advantageously reduce the build up of electrostatic charge. Systems and methods for capturing in-situ images within a fluidized bed are also provided that involve reducing the electrostatic charges generated within the fluidized bed and introducing a particle vision and measurement (PVM) probe to the fluidized bed for image capture.

摘要翻译： 公开了减少静电产生的颗粒和/或粉末系统流化的系统和方法。 所述系统/方法对于纳米颗粒和/或纳米粉末系统的流化是特别有利的，其中静电的产生和/或存在是显着的流化问题。 所述系统和方法通常涉及将醇或其它溶剂添加到待引入流化室的流化气体中，例如通过使流化气体鼓泡通过一定体积的溶剂/醇，以有利地减少静电荷的积累 。 还提供了用于在流化床内捕获原位图像的系统和方法，其涉及减少在流化床内产生的静电电荷并将颗粒视觉和测量（PVM）探针引入流化床以进行图像捕获。

公开(公告)号：US20100071554A1

公开(公告)日：2010-03-25

申请号：US12434306

申请日：2009-05-01

申请人： Robert Pfeffer ,  Jose A. Quevedo

发明人： Robert Pfeffer ,  Jose A. Quevedo

IPC分类号： B01D46/00 ,  B01D46/30 ,  B01D46/38 ,  B01D46/46

CPC分类号： B01D53/02 ,  B01D39/06 ,  B01D39/2093 ,  B01D46/30 ,  B01D46/38 ,  B01D53/04 ,  B01D53/12 ,  B01D2253/106

摘要： A purification method comprises directing a system having a gas phase component and a contaminant through a filter including an aerogel material, e.g., hydrophobic silica-based aerogel particles. A filter for purifying a gas phase system comprises an aerogel material in an amount sufficient to remove at least a portion of a contaminant present in the gas phase system. In preferred examples, the filter is a fluidized bed. In further examples, the filter is a packed bed.

摘要翻译： 净化方法包括使具有气相成分和污染物的系统通过包括气凝胶材料（例如疏水性二氧化硅基气凝胶颗粒）的过滤器引导。 用于纯化气相体系的过滤器包括足以除去气相体系中存在的至少一部分污染物的气凝胶材料。 在优选实施例中，过滤器是流化床。 在另外的例子中，过滤器是填充床。

公开(公告)号：US07658340B2

公开(公告)日：2010-02-09

申请号：US11605176

申请日：2006-11-28

申请人： Robert Pfeffer ,  Caroline H. Nam ,  Rajesh N. Dave ,  Guangliang Liu ,  Jose A. Quevedo ,  Qun Yu ,  Chao Zhu

发明人： Robert Pfeffer ,  Caroline H. Nam ,  Rajesh N. Dave ,  Guangliang Liu ,  Jose A. Quevedo ,  Qun Yu ,  Chao Zhu

IPC分类号： B02C19/00 ,  B02C19/06

CPC分类号： B01F13/0809 ,  B01F11/0266 ,  B01F13/0255 ,  B01J8/1872 ,  B01J8/40 ,  B01J8/42 ,  B01J19/10 ,  B01J2208/00681 ,  B82Y15/00

摘要： With the coupling of an external field and aeration (or a flow of another gas), nanoparticles can be smoothly and vigorously fluidized. A magnetic force and/or pre-treatment may be employed with the fluidizing gas and, when coupled with a fluidizing medium, provide excellent means for achieving homogenous nanofluidization. The magnetic force interacts with non-fluidizing magnetic particles and helps to break channels as well as provide enough energy to disrupt the strong interparticle forces, thereby establishing an advantageous agglomerate size distribution. Enhanced fluidization is reflected by improved performance-related attributes. The fluidized nanoparticles may be coated, surface-treated and/or surface-modified in the fluidized state. In addition, the fluidized nanoparticles may participate in a reaction, either as a reactant or a catalyst, while in the fluidized state.

摘要翻译： 通过外场和通气（或另一种气体的流动）的耦合，纳米颗粒可以顺利且剧烈流化。 可以与流化气体一起使用磁力和/或预处理，并且当与流化介质结合时，提供用于实现均匀纳米流化的优异手段。 磁力与非流动性磁性颗粒相互作用，有助于破坏通道，并提供足够的能量来破坏强大的颗粒间力，从而建立有利的聚集体尺寸分布。 改进的流量化反映在与性能相关的特性方面。 流化的纳米颗粒可以在流化状态下被涂覆，表面处理和/或表面改性。 此外，流化的纳米颗粒可以在流化状态下作为反应物或催化剂参与反应。

公开(公告)号：US08632623B2

公开(公告)日：2014-01-21

申请号：US12434306

申请日：2009-05-01

申请人： Robert Pferrer ,  Jose A. Quevedo

发明人： Robert Pferrer ,  Jose A. Quevedo

IPC分类号： B01D53/12

CPC分类号： B01D53/02 ,  B01D39/06 ,  B01D39/2093 ,  B01D46/30 ,  B01D46/38 ,  B01D53/04 ,  B01D53/12 ,  B01D2253/106

摘要： A purification method comprises directing a system having a gas phase component and a contaminant through a filter including an aerogel material, e.g., hydrophobic silica-based aerogel particles. A filter for purifying a gas phase system comprises an aerogel material in an amount sufficient to remove at least a portion of a contaminant present in the gas phase system. In preferred examples, the filter is a fluidized bed. In further examples, the filter is a packed bed.

摘要翻译： 净化方法包括使具有气相成分和污染物的系统通过包括气凝胶材料（例如疏水性二氧化硅基气凝胶颗粒）的过滤器引导。 用于纯化气相体系的过滤器包括足以除去气相体系中存在的至少一部分污染物的气凝胶材料。 在优选实施例中，过滤器是流化床。 在另外的例子中，过滤器是填充床。

公开(公告)号：US08550698B2

公开(公告)日：2013-10-08

申请号：US11937787

申请日：2007-11-09

申请人： Robert Pfeffer ,  Jose A. Quevedo ,  Juergen Flesch

发明人： Robert Pfeffer ,  Jose A. Quevedo ,  Juergen Flesch

IPC分类号： B01F13/02

CPC分类号： B01J8/32 ,  B01F3/18 ,  B01F13/02 ,  B01F13/0272 ,  B01J8/1818 ,  B01J8/1872 ,  B82Y15/00 ,  B82Y30/00

摘要： Methods and systems for enhancing fluidization of nanoparticle and/or nanoagglomerates and for mixing and blending nanoparticle/nanoagglomerate systems at the nanoscale 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 and mixing/blending results.

摘要翻译： 提供了用于增强纳米颗粒和/或纳米团聚体的流化和用于在纳米尺度下混合和混合纳米颗粒/纳米团聚体系的方法和系统。 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，有利于使附聚物通气，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，从而增强流化和混合/混合结果。

公开(公告)号：US08118243B2

公开(公告)日：2012-02-21

申请号：US11937736

申请日：2007-11-09

申请人： Robert Pfeffer ,  Jose A. Quevedo ,  Juergen Flesch

发明人： Robert Pfeffer ,  Jose A. Quevedo ,  Juergen Flesch

IPC分类号： B02C19/00

CPC分类号： B01J8/32 ,  B01F3/18 ,  B01F13/02 ,  B01F13/0272 ,  B01J8/1818 ,  B01J8/1872 ,  B82Y15/00 ,  B82Y30/00

摘要： 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.

摘要翻译： 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。

公开(公告)号：US07645327B2

公开(公告)日：2010-01-12

申请号：US11416034

申请日：2006-05-02

申请人： Robert Pfeffer ,  Rajesh Dave ,  Stanislav Dukhin ,  Jose A. Quevedo ,  Qun Yu

发明人： Robert Pfeffer ,  Rajesh Dave ,  Stanislav Dukhin ,  Jose A. Quevedo ,  Qun Yu

IPC分类号： B01D29/02

CPC分类号： B01D46/30 ,  B01D39/04 ,  B01D46/003 ,  B01D2239/0258 ,  B01D2279/51 ,  Y10S977/773 ,  Y10S977/775 ,  Y10S977/776 ,  Y10S977/777 ,  Y10S977/778

摘要： Systems and methods for achieving filtration are provided that utilize agglomerates or granules of nanoparticles. The agglomerates or granules of nanoparticles may be used as and/or incorporated into a HEPA filtration system to remove solid or liquid submicron-sized particles, e.g., MPPS, in an efficient and efficacious manner. The filtration systems and methods are provided that utilize agglomerates or granules in a size range of about 100-500 microns. The agglomerates or granules of nanoparticles exhibit a hierarchical fractal structure. In the case of agglomerates of nanoparticles, porosities of 0.9 or greater are generally employed, and for granules of nanoparticles, porosities that are smaller than 0.9 may be employed. Filter media formed from the agglomerates or granules may be formed from materials such as carbon black and fumed silica, and may be employed in baffled or non-baffled filtration apparatus.

摘要翻译： 提供用于实现过滤的系统和方法，其利用纳米颗粒的附聚物或颗粒。 纳米颗粒的附聚物或颗粒可以用作和/或并入HEPA过滤系统中以有效和有效的方式除去固体或液体亚微米尺寸的颗粒，例如MPPS。 提供了使用约100-500微米尺寸范围内的附聚物或颗粒的过滤系统和方法。 纳米颗粒的团聚体或颗粒呈现分层结构。 在纳米颗粒附聚物的情况下，通常使用0.9或更大的孔隙率，并且对于纳米颗粒的颗粒，可以使用小于0.9的孔隙率。 由附聚物或颗粒形成的过滤介质可以由诸如炭黑和煅制二氧化硅的材料形成，并且可以用于挡板或非挡板过滤装置中。