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1. 发明申请

US20130146540A1 SYSTEM AND PROCESS FOR TREATING WATER AND SPIRAL WOUND MEMBRANE ELEMENT 审中-公开
标题翻译：用于处理水和螺旋膜元件的系统和过程
公开(公告)号：US20130146540A1
公开(公告)日：2013-06-13
申请号：US13315731
申请日：2011-12-09
申请人： Prasanna Rao DONTULA , Yatin TAYALIA , Upen Jayant BHARWADA
发明人： Prasanna Rao DONTULA , Yatin TAYALIA , Upen Jayant BHARWADA
IPC分类号： C02F1/44 , B01D63/12 , B01D61/02 , B01D65/00
CPC分类号： B01D63/10 , B01D2313/143 , B01D2319/022
摘要： A spiral would membrane element has a feed channel spacer providing a tortuous feed flow path through an open spacer mesh material. The feed flow path may force the feed liquid to flow across substantially all of an adjacent membrane surface. The length of the flow path and average cross-flow velocity are increased relative to a straight flow path. A rise in pressure drop that might otherwise be produced by the increased average cross-flow velocity is reduced by the open spacer mesh. In a system having two or more upstream and downstream spiral wound membrane elements, a downstream element may have a feed channel spacer providing a tortuous flow path while an upstream element has a feed channel spacer providing a less tortuous flow path or a straight flow path.
摘要翻译：螺旋形的膜元件具有供给通道间隔件，其通过开放间隔物网状材料提供曲折的进料流动路径。进料流动路径可以迫使进料液体基本上跨过相邻的膜表面流动。流路的长度和平均交叉流速相对于直流路径增加。通过开放的间隔网可以减小由平均交叉流速增加而产生的压降的上升。在具有两个或更多个上游和下游螺旋缠绕膜元件的系统中，下游元件可以具有提供曲折流动路径的进料通道间隔件，而上游元件具有供给通道间隔件，其提供较不曲折的流动路径或直流通道。

2. 发明申请

US20130146532A1 FEED SPACER FOR SPIRAL WOUND MEMBRANE ELEMENT 审中-公开
标题翻译：螺旋膜元件的进料间隔件
公开(公告)号：US20130146532A1
公开(公告)日：2013-06-13
申请号：US13316011
申请日：2011-12-09
申请人： Prasanna Rao DONTULA , Yatin TAYALIA , Upen Jayant BHARWADA
发明人： Prasanna Rao DONTULA , Yatin TAYALIA , Upen Jayant BHARWADA
IPC分类号： B01D65/00 , B29C43/24 , C02F1/44
CPC分类号： B01D63/10 , B01D2313/143 , B29C53/24 , B29K2023/12
摘要： A feed channel spacer for use in a spiral wound membrane element provides a series of generally parallel interior channels. The interior channels extend from an inlet side of the spacer to an outlet side of the spacer, but follow an undulating or zigzagging path. Dean's vortices or other flow patterns that cause mixing reduce concentration polarization. The feed channel spacer is made by pressing a sheet of thermoplastic material in a die.
摘要翻译：用于螺旋缠绕膜元件的进料通道间隔件提供一系列大致平行的内部通道。内部通道从间隔件的入口侧延伸到间隔件的出口侧，但是遵循起伏或锯齿形路径。 Dean的涡流或其他流动模式引起混合降低浓度极化。进料通道间隔件通过在模具中挤压热塑性材料片而制成。

3. 发明申请

US20130146531A1 FEED SPACERS FOR SPIRAL WOUND MEMBRANE ELEMENT 审中-公开
标题翻译：螺旋膜元件的进料间隔
公开(公告)号：US20130146531A1
公开(公告)日：2013-06-13
申请号：US13315423
申请日：2011-12-09
申请人： Yatin TAYALIA , Prasanna Rao DONTULA , Upen Jayant BHARWADA
发明人： Yatin TAYALIA , Prasanna Rao DONTULA , Upen Jayant BHARWADA
IPC分类号： B01D63/00 , B29C43/02
CPC分类号： B01D63/00 , B01D63/10 , B01D2313/143
摘要： A feed channel spacer for a spiral wound membrane element has inlet and outlet edges that are thinner than the rest of the spacer material. The edges may be made thinner, for example, by passing the edges of a sheet of feed spacer material through a pair of hot rollers or by compressing the edges of the sheet in a heated press. The thinned edges of the feed spacer material are located in the element between glue lines applied to the permeate spacers of the element. The thin edges allow a greater membrane surface area to be provided in a given element diameter. A feed channel spacer may also have an area with obstructions to create micro-mixing effects. These obstructions may be provided on a feed spacer sheet of constant thickness, or one with thin edges.
摘要翻译：用于螺旋缠绕膜元件的进料通道间隔件具有比间隔物材料的其余部分更薄的入口和出口边缘。边缘可以做得更薄，例如通过使一片进料间隔材料的边缘通过一对热辊或通过在加热的压榨机中压缩片材的边缘。进料间隔材料的变薄的边缘位于施加到元件的渗透物间隔物的胶线之间的元件中。薄边缘允许在给定的元件直径中提供更大的膜表面积。进料通道间隔物也可以具有阻碍物的区域以产生微混合效果。这些障碍物可以设置在恒定厚度的进料间隔片或具有薄边缘的进料间隔片上。

4. 发明申请

US20130098829A1 SPIRAL WOUND MEMBRANE ELEMENT AND PERMEATE CARRIER 审中-公开
标题翻译：螺旋膜元件和透气载体
公开(公告)号：US20130098829A1
公开(公告)日：2013-04-25
申请号：US13276901
申请日：2011-10-19
申请人： Prasanna Rao DONTULA , Yatin TAYALIA , Upen Jayant BHARWADA , Jayaprakash Sandhala RADHAKRISHNAN , Muralidhar PATNAM
发明人： Prasanna Rao DONTULA , Yatin TAYALIA , Upen Jayant BHARWADA , Jayaprakash Sandhala RADHAKRISHNAN , Muralidhar PATNAM
IPC分类号： B01D69/04 , B32B5/02 , B01D63/10
CPC分类号： B01D63/103 , B01D63/10 , B01D69/105 , B01D2313/146 , Y10T428/24562 , Y10T442/2484
摘要： A permeate carrier for a spiral wound membrane element has two or three layers, for example of tricot construction. The two outer, or only, layers resist movement of the membrane sheet into permeate channels in the permeate carrier. The total thickness of the permeate carrier sheet may be similar to the thickness of typical tricot permeate carrier sheets. The permeate carrier sheet may be coated to make its surfaces hydrophilic. The coating may be, for example, a cross-linked polyvinyl alcohol (PVA) or polyvinyl pyrrolidone (PVP). In the spiral wound element, a permeate carrier sheet may be wrapped in one or more layers around a central tube. Channels in the permeate carrier sheet are oriented helically relative to a longitudinal axis of the central tube.
摘要翻译：用于螺旋缠绕膜元件的渗透物载体具有两层或三层，例如经编织物构造。两个外层或仅有的层阻止膜片移动到渗透物载体中的渗透通道中。渗透物载体片材的总厚度可以类似于典型的经编渗透物载体片材的厚度。渗透载体片可以被涂覆以使其表面亲水。涂层可以是例如交联的聚乙烯醇（PVA）或聚乙烯吡咯烷酮（PVP）。在螺旋缠绕元件中，渗透物载体片可围绕中心管缠绕成一层或多层。渗透载体片中的通道相对于中心管的纵轴为螺旋形取向。

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