Graphene feed liquid deacidification method and device

A technology of graphene and feed liquid, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of long time consumption and poor acid removal effect, reduce production cost, increase filtration equivalent, and ensure processing and production cost effect

Inactive Publication Date: 2021-10-22
同舟众横厦门流体技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is: in order to solve the problem that the transmission deacidification process adopts the stirring precipitation method, which takes a long time, and the deacidification effect is poor, and cannot well meet the needs of deacidification in graphene oxide, and proposes a Method and device for deacidifying graphene feed liquid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The graphite olefum fluid during production of oxidation reduction methods was collected. The graphene content in the graphene gas is 2-8%.

[0046] The graphite olefin obtained in the above step 1 is precisely filtered, (80 mesh), after the sharp substance in the filter solution, enter the feed buffer can, conveyed to the pressurized pump to increase pressure to 0.3 MPa After entering the ceramic membrane module, the ceramic membrane is deacive, and the ceramic membrane assembly is measured, and the temperature of the ceramic membrane degenerate is 20-32 ° C, and when the pH of the tank is 6-7, the ceramic membrane concentrate is obtained. Ceramic membrane dialysate.

[0047] The pH of the ceramic membrane concentrate obtained above was 6-7, and the resulting ceramic membrane concentrate further distilled dried. According to 80 tons of graphite per day, 800 tons of water per day, saving time of running time for 16 hours, and converted costs about 0.6 million yuan.

[0048]...

Embodiment 2

[0050] The graphite olefum fluid during production of oxidation reduction methods was collected. The graphene content in the graphene gas is 5-8%.

[0051] The graphite olefum liquid obtained in the above step (190 mesh), after the sharp substance in the filter solution, enter the feed buffer can, transported to the booster pump to increase the pressure to 0.4 MPa after entering The ceramic membrane module is concentrated in ceramic membrane while measuring the amount of water in the ceramic membrane module, the temperature of the ceramic membrane degenerate is 25-32 ° C, and when the pH of the tank is 6-7, the ceramic membrane concentrate and ceramic film are obtained. dialysate.

[0052]The pH of the ceramic membrane concentrate obtained above is 6-7, and the resulting ceramic film concentrate further distilled dry, according to 70 tons of graphene liquid per day, saving 700-1000 tons per day, saving time of operation 14h, converting a cost About 0.55 million yuan.

[0053] The ...

Embodiment 3

[0055] The graphite olefum fluid during production of oxidation reduction methods was collected. The graphene content in the graphene fluid is 4-8%.

[0056] The graphite olefum obtained in the above step is precisely filtered (200 mesh). After the sharp substance in the filter solution, the feed buffer can be transferred to the pressurized pump to boost to 0.4 MPa. The ceramic membrane module is reduced by ceramic membrane, and the ceramic membrane assembly is measured, and the temperature of the ceramic membrane degenerate is 22-30 ° C, and when the pH of the tank is 6-7, the ceramic membrane concentrate and ceramic film are obtained. dialysate.

[0057] The pH of the ceramic membrane concentrate obtained above is 6-7, and the resulting ceramic film concentrate further distilled dry, according to 100 tons of graphite liquid group per day, saving water 1000-1200 tons per day, saving running time 18h, converting a cost About 0.8 million yuan.

[0058] The resulting ceramic dialysa...

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Abstract

The invention discloses a graphene feed liquid deacidification method and device, and belongs to the technical field of graphene production, wherein the graphene feed liquid deacidification method specifically comprises the following steps: S101, feeding to-be-treated graphene feed liquid into a storage tank for preliminary precipitation; S102, removing impurities from the bottom of the precipitated graphene feed liquid, pressurizing the graphene feed liquid through a pressurizing pump, and feeding the graphene feed liquid into ceramic membrane equipment; and S103, carrying out nanofiltration filtration deacidification on the graphene feed liquid entering the ceramic membrane equipment through a ceramic membrane, and fully filtering to obtain a ceramic membrane concentrated solution. According to the method, the graphene feed liquid is subjected to ceramic membrane deacidification, the ceramic membrane concentrated solution is obtained, the molecular weight cutoff of a ceramic membrane used in the ceramic membrane deacidification is 10-50 nm, the pressure intensity of the ceramic membrane deacidification is 0.3-0.6 MPa, and the content of sulfuric acid in the concentrated solution treated through the ceramic membrane is greatly reduced; and through effective concentration and filtration of the graphene feed liquid, the operation time is shortened, the water consumption is reduced, and the production cost is reduced.

Description

Technical field [0001] The present invention belongs to the field of graphene production, and more particularly to a method and apparatus of a graphene material. Background technique [0002] Graphie is roughly divided into two categories, one type is a graphene film composed of a single layer or multilayer graphene, and the other is a graphene micro piece composed of a plurality of layer of graphene in a 10 layer. At present, the main preparation method of graphene is: mechanical stripping method, solvent peeling method, chemical vapor deposition method, crystalline epitaxial growth method, and oxidative method, etc. [0003] In the current oxidation method, since the preparation of graphene is the main raw material of graphite, concentrated sulfuric acid, potassium permanganate, hydrogen permesolate, the residual sulfuric acid, potassium permanganate, potassium permanganate, and hydrogen peroxide, etc. Concentration of graphene is a global technical problem; [0004] At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/198C01B32/196B01D61/18
CPCC01B32/198C01B32/196B01D61/18B01D61/145
Inventor 郑贤坤蓝云才林雄水施志文
Owner 同舟众横厦门流体技术有限公司
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