Continuous production method of graphite coated material

A production method and graphite coating technology are applied in the field of continuous production of graphite coating materials, which can solve the problems of uneven distribution of asphalt family components, low residual carbon content, complicated processes, etc., so as to achieve product industrialization, reduce The effect of production costs

Pending Publication Date: 2021-09-03
天津北海石化工程有限公司
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Problems solved by technology

[0004] However, the existing graphite-coated materials have low coking value, low residual carbon content, uneven distribution of pitch group components, and th

Method used

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  • Continuous production method of graphite coated material
  • Continuous production method of graphite coated material

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Number the asphalt samples with four different softening points, among them:

[0038] 1 # Bitumen with a softening point of 100-200°C;

[0039] 2 # Bitumen with a softening point of 120-220°C;

[0040] 3 # Bitumen with a softening point of 150-240°C;

[0041] 4 # Bitumen with a softening point of 200-280°C;

[0042] The four samples of asphalt were inspected separately, as attached figure 2 As shown, the results show that the asphalt with a softening point of 200-280°C has higher carbon residue content, higher ash content, and lower content of quinoline insolubles in the product than the other three softening point samples, and the application effect is good.

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Abstract

The invention provides a continuous production method of a graphite coated material. The continuous production method comprises the following steps: preheating raw oil; conveying the raw oil to a preheater, heating to 120-180 DEG C and then conveying the raw oil to a dehydration tower to be subjected to dehydration treatment; conveying the raw oil into a next-stage preheater, heating, carrying out primary vacuum rectification, respectively conveying fractions to an evaporator and a reboiler through a conveying pump at the bottom of a rectifying tower kettle, respectively conveying the fractions obtained by rectification to the middle part of the rectifying tower and the upper part of the rectifying tower kettle, carrying out secondary vacuum rectification to produce asphalt with the softening point of 100-200 DEG C; conveying the asphalt into a first reaction kettle for reaction to obtain asphalt with the softening point of 120-220 DEG C; then conveying the asphalt into a second reaction kettle for reaction to obtain asphalt with the softening point of 150-240 DEG C; and finally, conveying the asphalt into two wiped-film evaporators to obtain the asphalt with the softening point of 200-280 DEG C. According to the invention, continuous production is realized, the production cost is obviously reduced, and product industrialization can be realized.

Description

technical field [0001] The invention belongs to the field of production of graphite coating materials, in particular to a continuous production method of graphite coating materials. Background technique [0002] As a new generation of energy storage devices, lithium-ion batteries have the advantages of high energy density, high working voltage, long cycle life, less environmental pollution, and no memory effect. They are currently one of the most promising energy storage devices. [0003] Lithium-ion battery anode materials play a vital role. Graphite anode materials have the characteristics of high conductivity, large diffusion coefficient of lithium ions, high lithium intercalation capacity and low lithium intercalation potential. It has comprehensive advantages in terms of performance and cost, and is currently the mainstream lithium battery anode material. Graphite materials are divided into natural graphite and artificial graphite. [0004] However, the existing graphi...

Claims

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Application Information

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IPC IPC(8): C10C3/00C10C3/06C10C3/14H01M4/587H01M10/0525
CPCC10C3/00C10C3/002C10C3/005C10C3/06C10C3/14H01M4/587H01M10/0525Y02E60/10
Inventor 王海清刘匡欣
Owner 天津北海石化工程有限公司
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