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Perforated graphene deionization or desalination

A graphene layer, graphene sheet technology, applied in the field of perforated graphite deionization or desalination, which can solve problems such as it is impossible to show the actual bending properties of typical paths

Inactive Publication Date: 2015-11-11
LOCKHEED MARTIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Path 20 is shown as winding, but it is not possible to show the actual curved nature of a typical path

Method used

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  • Perforated graphene deionization or desalination
  • Perforated graphene deionization or desalination
  • Perforated graphene deionization or desalination

Examples

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Embodiment Construction

[0021] figure 2 is a conceptual view of a basic desalination, desalination or deionization apparatus 200 according to an exemplary embodiment or aspect of the present disclosure. exist figure 2 , channel 210 transports ion-laden water to filter membrane 212 installed in support chamber 214 . The ion-laden water may be, for example, sea water or brackish water. In an exemplary embodiment, the filter membrane 212 can be wound in a helical shape in a known manner. flow past figure 2 The flow force or pressure of ion-laden water in channel 210 can be provided by gravity from tank 216 or by pump 218 . Valves 236 and 238 allow selection of ionized water sources. In device or arrangement 200, filter membrane 212 is a perforated graphene sheet. Graphene is a monoatomic layer of carbon atoms bonded together to define a sheet 310 (eg image 3 shown). A single graphene sheet has a thickness of about 0.2 to 0.3 nanometers (nm). Multiple graphene sheets can be formed, with grea...

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Abstract

A separation apparatus (700) and related method is provided in a cross-flow arrangement where a pressurized source directs a medium along a path substantially parallel to one or multiple sheets (722) of graphene from an inlet to an outlet. The medium (702) flows through the plural perforated apertures (721) in the graphene membrane while a remaining portion of the medium and the disallowed components in the medium flow out the outlet. A backing sheet or supporting membrane (724) may be disposed underneath the graphene membrane (722). The apparatus my be used for desalinaton.

Description

Background technique [0001] Fresh water resources are becoming increasingly scarce, and many countries are looking for solutions to convert salt-contaminated water, most notably seawater, into clean drinking water. [0002] Existing technologies for water desalination fall into four broad categories, namely, distillation, ionic processes, membrane processes, and crystallization. The most efficient and commonly employed of these techniques are Multi-Stage Flash (MSF), Multiple Effect Evaporation (MEE) and Reverse Osmosis (RO). Cost is the driving factor for all of these approaches, with energy and capital costs both being significant. Both RO and MSF / MEE technologies are well developed. Currently, optimal desalination schemes require two to four times the theoretical minimum energy limit established by simple evaporation of water, where the minimum energy limit is 3000 J / kg to 7000 J / kg. Distillative desalination methods include multi-stage flash distillation, multiple-effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/44C02F103/08
CPCC02F1/44B01D61/02B01D61/027B01D67/006B01D69/02B01D71/021C02F1/442C02F2103/08C02F2303/16C02F2305/08Y02A20/131Y02A20/124B01D71/0211
Inventor 小约翰·B·斯泰森乔纳森·莫克里奥艾伦·罗森温克彼得·V·拜德沃斯肖恩·P·弗菜明亚伦·L·韦斯特曼
Owner LOCKHEED MARTIN CORP