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Method for industrially producing carbon fluoride materials

A technology for producing fluorinated carbons and fluorinated carbons, applied in fluorinated carbons, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as low fluorine content, easy explosion in production, uneven fluorination, etc., and achieve The effect of high reaction efficiency, high utilization rate and uniform product quality

Pending Publication Date: 2018-09-14
SHANDONG ZHONGSHAN PHOTOELECTRIC MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are certain difficulties in the industrial production and preparation of fluorinated carbon materials. The fluorine content in mass production is not high, the fluorination is uneven, and the production is prone to explosion.

Method used

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  • Method for industrially producing carbon fluoride materials
  • Method for industrially producing carbon fluoride materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Taking the colloidal graphite raw material as an example, the method for producing fluorinated colloidal graphite using a fluidized bed reactor in a large-scale production of the present invention comprises the following steps:

[0040] Take 15 kg of colloidal graphite raw material and put it into the fluidized bed 1 containing the gas distribution plate 2, seal the whole system and pressurize the leak test, inject nitrogen gas to remove volatile impurities, and heat the fluidized bed 1 to raise the temperature; after 2 hours When the temperature reaches 250 °C, the mixed gas of oxygen difluoride / nitrogen is introduced from the bottom of the fluidized bed 1 at a flow rate of 7.5 Nm 3 / h; the pressure inside the fluidized bed 1 is normal pressure, the reaction temperature is 400~450°C, the concentration of oxygen difluoride is 4%, the reaction time is 38 h, stop heating, replace with nitrogen, and cool down naturally; wait for the fluidized bed 1 After the internal tempe...

Embodiment 2

[0043] Taking the nano-graphite raw material as an example, the production of fluorinated nano-graphite by using the method of the present invention for large-scale production of fluorinated carbon materials using a fluidized bed reactor includes the following steps:

[0044] Take 5 kg of nano-graphite raw material and put it into the fluidized bed 1 containing the gas distribution plate, seal the whole system and pressurize the leak test, inject helium gas to remove volatile impurities, and heat the fluidized bed 1; after 1 h When the temperature reaches 280 °C, the fluorine / helium gas mixture is introduced from the bottom of the fluidized bed 1 at a flow rate of 3.5 Nm 3 / h; the pressure inside fluidized bed 1 is normal pressure, the reaction temperature is 450~500 ℃, the concentration of fluorine gas is 3%, the reaction time is 42 h, stop heating, replace with helium, and cool down naturally; After the temperature dropped to room temperature, the material was taken out, and...

Embodiment 3

[0047] Taking the expanded graphite raw material as an example, the method for producing fluorinated expanded graphite using a fluidized bed reactor in a large-scale production of the present invention comprises the following steps:

[0048] Take 100 kg of expanded graphite raw material and put it into the fluidized bed 1 containing the gas distribution plate 2, seal the whole system and pressurize for leak testing, introduce carbon tetrafluoride to remove volatile impurities, and heat up the fluidized bed; 5 After 320 °C, nitrogen trifluoride / carbon tetrafluoride mixed gas was introduced from the bottom of the fluidized bed at a flow rate of 12 Nm 3 / h; the pressure inside the fluidized bed 1 is normal pressure, the reaction temperature is 460~510°C, the concentration of nitrogen trifluoride is 17%, the reaction time is 30 h, stop heating, replace with carbon tetrafluoride gas, and cool down naturally; After the internal temperature of the fluidized bed 1 was lowered to room t...

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Abstract

The invention discloses a method for industrially producing carbon fluoride materials. A carbon raw material is in sufficient contact with a fluorinating agent for a reaction in a fluidized bed, and the carbon fluoride materials with different fluoride contents are generated; after purification and drying, carbon fluoride material products with different fluoride contents are obtained, wherein thefluoride contents are within the range of 3-66%. Compared with a synthesis method in the prior art, the production method can achieve industrial scale production of the carbon fluoride materials, andbesides, the production method is simple in technology process, high in reaction efficiency, low in production cost and uniform in product quality. The obtained carbon fluoride material products aremainly applied to anode materials of lithium ion batteries, high-end solid lubricant materials, filler of high-end coatings, oil absorption materials and the like.

Description

technical field [0001] The invention relates to a method for synthesizing fluorinated carbon materials, in particular to a method for large-scale production of fluorinated carbon materials by using a fluidized bed reactor. Background technique [0002] Carbon fluoride material is an indispensable functional material in today's world. It is mainly used in metallurgy, chemical industry, military and other fields, and has become a hot spot and focus of research by scholars at home and abroad. Due to the low surface energy, large interlayer spacing, strong chemical properties and thermal stability of fluorinated carbon materials, and the higher the degree of fluorination, the better the lubricity, and are widely used in solid lubricants or lubricating additives under various harsh conditions; Fluorinated carbon materials are used as the active material of the positive electrode of the battery, which can increase the storage life of the battery and form a lithium-fluorine battery...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/10B01J8/24
CPCB01J8/24C01B32/10
Inventor 方治文高秀磊孙艳东张广志闫森陈少云
Owner SHANDONG ZHONGSHAN PHOTOELECTRIC MATERIAL CO LTD
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