Making method for charcoal electrode of liquid flow type electroadsorption desalinization device

The technology of a desalination device and a manufacturing method, which is applied in the field of carbon electrode manufacturing, can solve the problems of difficulty in ensuring the uniformity of temperature distribution, affecting electrode performance, high energy consumption, etc. The effect of high conductivity

Inactive Publication Date: 2004-11-10
上海维安新材料研究中心有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] D.Andelman et al. described the electrode forming method in US6127474. Based on the current domestic and foreign water treatment methods for desalination using the principle of electric double layer (double-sided electrode), the forming process of the electrode is generally based on hot press forming, and these Both methods add a large amount of binder and other auxiliary additives, which affect the performance of the electrode.
Moreover, the hot pressing method consumes a lot of energy, and it is difficult to ensure the uniformity of temperature distribution when preparing large-area electrodes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: In this embodiment, a carbon electrode is manufactured according to the aforementioned process procedures and steps.

[0031] The raw materials used in this embodiment are electrode carbon and carbon nanotubes, and the specific surface area of ​​the electrode carbon is 2000m 2 / g, the length of the carbon nanotubes is in the range of 80-200nm, and the shaft diameter is 10-30nm; taking the production of 100g of mixed carbon material as an example, the two raw materials are mixed in a ball mill at a weight percentage of 80:20. Then, add another 5%, that is, 5 grams of polytetrafluoroethylene emulsion binder, and then fully stir and mix by a high-speed sand mill, and add a small amount of alcohol dispersant to fully disperse the polytetrafluoroethylene emulsion to form Viscous slurry; after the slurry is vacuum-dried to a certain humidity, it is cold-pressed on a roll machine to form a carbon electrode sheet with a thickness of 1mm required by cold-pressing, and ...

Embodiment 2

[0033] The second embodiment: the process procedures and steps of this embodiment are the same as those of the first embodiment.

[0034] The raw materials used in this embodiment are electrode carbon and conductive graphite, and the specific surface area of ​​the electrode carbon is 2000m 2 / g, taking the production of 100 grams of mixed carbon material as an example, the two raw materials are mixed in a ball mill at a weight percentage of 85:15. After ball milling, dilute with water. The amount of water added is 2 times the weight of the above mixed material. That is 200 grams; then add 5%, that is, 5 grams of PTFE emulsion binder (the mass percentage concentration of PTFE is 60%, and it can be shaken uniformly by ultrasonic wave first), and then fully processed by a high-speed sand mill Stir and mix and add alcohol dispersant to fully disperse the polytetrafluoroethylene emulsion to form a viscous slurry. After the slurry is vacuum dried to a certain humidity, it is cold-pressed...

Embodiment 3

[0036] Embodiment 3: The process procedures and steps of this embodiment are the same as those of the first embodiment.

[0037] The raw materials used in this embodiment are electrode carbon and carbon fiber, and the specific surface area of ​​the electrode carbon is 2000m 2 / g, taking the production of 100 grams of mixed carbon material as an example, the two raw materials are mixed in a ball mill at a weight percentage of 95:5. After the mixture is stirred, the carbon fiber still has a carbon fiber structure; then add 5%, that is, 5 grams of The PTFE emulsion binder is fully stirred and mixed by a high-speed sand mill, and an appropriate amount of alcohol dispersant is added to fully disperse the PTFE emulsion to form a viscous slurry. The slurry is vacuum dried After reaching a certain humidity, it is cold-pressed on a counter-roller to form a carbon electrode sheet with a thickness of 1mm required by cold-pressing, and then use conductive graphite emulsion to bond the above-m...

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Abstract

The invention relates to a method of making carbon electrode of fluid electric-absorption desalter. It mainly mixes high specific surface area electrode carbon, nano carbon tube absorption material, carbon fiber, and nano carbon tube conductive material as well as adhesive polytetrafluoroethylene in a certain proportion and in a certain mode to make cold press molding and makes them into a double-faced electrode with a collector interlaid; the carbon electrode has good electric conductivity, small resistance, large electric capacity and low energy consumption; in addition, the modified carbon electrode has larger specific surface area and mesoporous porosity, therefore able to increase the absorption quantity of electrode to salt ions. The carbon electrode is especially applied to the fluid electric-absorption desalter and has higher desalting efficiency.

Description

Technical field: [0001] The invention relates to a method for manufacturing a carbon electrode of a liquid flow type electro-absorption desalination device, that is to say, to a method for obtaining a modified carbon electrode suitable for liquid flow type electro-absorption water treatment. The invention belongs to the technical field of the manufacturing process of the main component carbon electrode in an electro-absorption water treatment device. Background technique: [0002] The water treatment method of liquid flow electro-absorption desalination uses carbon materials as electrodes, and uses components such as collectors, diaphragms, and outer frames to form electro-absorption devices. The main working principle is that when the salt water passes through the device under the condition of electrification, the soluble salt ions in the water move to the oppositely charged electrode and are adsorbed on the electrode. When the electrode reaches the saturation adsorption, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D15/08C02F1/28C02F1/46
Inventor 方建慧施利毅张建军张登松邓英温轶戴凯刘继全姜华
Owner 上海维安新材料研究中心有限公司
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