Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for preparing fluorinated graphene and high purity lithium fluoride as by-product

A technology of high-purity lithium fluoride and fluorinated graphene is applied to the equipment for preparing fluorinated graphene by-product high-purity lithium fluoride, and the field of preparing high-purity lithium fluoride by-product of graphene fluoride can solve the waste of resources , the problem of low utilization of raw materials, etc., to achieve the effect of improving utilization, good economic and environmental benefits, and high fluorination uniformity

Active Publication Date: 2017-02-08
DO FLUORIDE CHEM CO LTD
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing fluorinated graphene by-product high-purity lithium fluoride, to solve the problem of low raw material utilization and waste of resources when preparing fluorinated graphene in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for preparing fluorinated graphene and high purity lithium fluoride as by-product
  • Method and device for preparing fluorinated graphene and high purity lithium fluoride as by-product
  • Method and device for preparing fluorinated graphene and high purity lithium fluoride as by-product

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0051] In the equipment of described preparation fluorinated graphene by-product high-purity lithium fluoride (as figure 1 shown), the gas inlet 3-1 of the first fluorination furnace 11 is connected with an inlet pipeline 14, and the inlet pipeline 14 is sequentially provided with a valve b and a valve f along the direction close to the first fluorination furnace 11 , the inlet pipeline 14 between the valve b and the valve f is connected with a fluorine-containing gas supply pipeline 23, a nitrogen gas supply pipeline 16 and a vacuuming pipeline 18, and the fluorine-containing gas supply pipeline 23 is provided with a valve a, which contains fluorine The gas supply pipeline 23 is connected with the gas source of the fluorine-containing gas (preferred fluorine-nitrogen mixed gas); the nitrogen gas supply pipeline 16 (connected with the nitrogen gas source) is provided with a valve c; the vacuum pipeline 18 is provided with a valve e, and the vacuum tube The road 18 is connected...

Embodiment 1

[0071] The method for preparing fluorinated graphene by-product high-purity lithium fluoride of the present embodiment comprises the following steps:

[0072] 1) Place four parts of graphene oxide with a weight of 10kg in four nickel arks, spread evenly, control the thickness of the material at 2.5mm, and cover the material with a nickel alloy wire mesh;

[0073] 2) Place the above-mentioned four parts of materials together with the ark and the silk screen in the reaction chambers of the first fluorination furnace and the second fluorination furnace, and seal the fluorination furnace;

[0074] 3) The fluorination furnace starts to heat up, turn on the cooling water circulation device, and at the same time turn on the vacuum pump, adjust the valve to evacuate the fluorination furnace until the pressure in the furnace is 0.04MPa; when the temperature rises to 300°C, heat at a constant temperature for 1.5h to keep the temperature constant cleaning;

[0075] 4) After removing imp...

Embodiment 2

[0087] The method for preparing fluorinated graphene by-product high-purity lithium fluoride of the present embodiment comprises the following steps:

[0088] 1) Place four parts of graphene oxide with a weight of 10kg in four Hastelloy arks, spread evenly, control the thickness of the material at 2mm, and cover the material with a Hastelloy wire mesh;

[0089] 2) Place the above-mentioned four parts of materials together with the ark and the silk screen in the reaction chambers of the first fluorination furnace and the second fluorination furnace, and seal the fluorination furnace;

[0090] 3) The fluorination furnace starts to heat up, turn on the cooling water circulation device, and at the same time turn on the vacuum pump, adjust the valve to evacuate the fluorination furnace until the pressure in the furnace is 0.035MPa; miscellaneous;

[0091] 4) After removing impurities at constant temperature, control the source pressure of fluorine-nitrogen mixed gas to 0.2MPa, and...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method and device for preparing fluorinated graphene and high purity lithium fluoride as a by-product. The method comprises 1, putting graphene oxide in a fluorination furnace, carrying out vacuum-pumping on the fluorination furnace, feeding fluorine-containing gas into the fluorination furnace and carrying out a fluorination reaction process, and 2, feeding protection gas into the fluorination furnace to cool the materials and to replace the fluorine-containing gas, wherein the cooled materials in the furnace is fluorinated graphene, feeding the replaced fluorine-containing gas into a high purity lithium hydroxide solution for an absorption reaction and separating high purity lithium fluoride when the system pH is in a range of 2-3. The method and device can realize preparation of high-grade fluorinated graphene and preparation of high purity lithium fluoride from a fluorine resource, realize recovery and reuse of excess fluorine-containing gas in the high purity lithium hydroxide solution, greatly improve a fluorine raw material utilization rate, save a fluorine resource and solve the environmental bottleneck problems. The lithium fluoride as a by-product is used for preparation of a lithium ion battery key material lithium hexafluorophosphate, becomes a novel economic growth point and has good economic benefits and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of fluorine chemical industry, and specifically relates to a method for preparing fluorinated graphene to by-produce high-purity lithium fluoride, and also relates to a device for preparing fluorinated graphene to by-produce high-purity lithium fluoride. Background technique [0002] Graphene is recognized as the "king of new materials", and its applications are almost omnipresent, such as energy storage, hydrogen storage materials and fields, lithium batteries, biomedicine, physical separation, military applications, etc. The market space is huge. The compound growth rate reaches 47%, which is a new round of carbon chemical revolution in the world. However, due to the slow preparation speed, the utilization rate has been hovering around 25%, which has become one of the bottlenecks restricting its practical application. In order to solve and break through the difficulties and key points in the preparation of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/182C01D15/04
CPCC01D15/04
Inventor 侯红军薛旭金刘海霞王建萍薛峰峰高红梅李云峰杨华春罗传军韩世军
Owner DO FLUORIDE CHEM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com