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Coated asphalt and preparation method and device thereof

A technology for preparing device and asphalt, which is applied in the processing of tar pitch/petroleum pitch/natural pitch, melting and processing tar pitch/petroleum pitch/natural pitch, and processing tar pitch/petroleum pitch/natural pitch by distillation, etc. Accurate processing, single product structure, poor product performance and other problems, to alleviate the pressure of resource economy and environment, low QI content, and accurate processing

Active Publication Date: 2022-07-15
CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a coated asphalt and its preparation method and device in order to overcome the problems of poor product performance, low yield, single product structure, inaccurate processing, complex process and other problems in the prior art that affect industrial production

Method used

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  • Coated asphalt and preparation method and device thereof
  • Coated asphalt and preparation method and device thereof
  • Coated asphalt and preparation method and device thereof

Examples

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Effect test

preparation example Construction

[0026] A first aspect of the present invention provides a method for preparing coated asphalt, comprising the following steps:

[0027] (1) after the coal liquefaction pitch is melted, it is filtered through a microfiltration membrane to obtain a refined pitch;

[0028] (2) molecular distillation is carried out with described refined pitch under vacuum condition, obtains light component pitch and low softening point coated pitch;

[0029] (3) Crosslinking the light component asphalt with a crosslinking agent to obtain a high softening point coated asphalt.

[0030] The pitch produced by coal liquefaction contains unreacted coal and inorganic impurities such as catalysts and metals. Therefore, in the present invention, the solid impurities in the asphalt need to be removed first. The use of microfiltration membrane filtration can remove unreacted coal and inorganic impurities such as catalysts and metals in the coal liquefaction asphalt raw material, so as to achieve the purp...

Embodiment l

[0073] The coal liquefaction pitch is heated to 280°C at a heating rate of 3°C / min in the raw material pitch heating and melting device 11, and is stirred at 280°C for 4 hours, and the microfiltration membrane is filtered through the microfiltration membrane filtration device 12, wherein the microfiltration The membrane pore size is 0.025 μm, the operating pressure is 0.2 MPa, and the temperature is 280 °C. The filter residue is solid impurities and primary QI, which are removed because they cannot pass through the filter membrane; the filtrate is the refined asphalt, which is collected in the refined asphalt collecting device 13 .

[0074] The refined asphalt in the refined asphalt collection device 13 is sent to the molecular distillation device 21 for distillation and cutting, wherein the operating temperature is 350 ° C and the vacuum degree is 10Pa, and the obtained light component enters the light component asphalt collecting device 22, and the obtained The heavy compone...

Embodiment 2-8

[0078] According to the method of Example 1, the difference is: the preparation parameter conditions are shown in Table 1, and the index of the finally obtained coated asphalt is shown in Table 2.

[0079] Table 1 Preparation parameters of coated asphalt

[0080]

[0081]

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Abstract

The invention relates to the field of coated asphalt, and discloses coated asphalt and a preparation method and device thereof. The preparation method comprises the following steps: (1) melting coal liquefied asphalt, and filtering through a micro-filtration membrane to obtain refined asphalt; (2) carrying out molecular distillation on the refined asphalt under a vacuum condition to obtain light-component asphalt and low-softening-point coated asphalt; and (3) carrying out cross-linking reaction on the light-component asphalt and a cross-linking agent to obtain the high-softening-point coated asphalt. The coated asphalt obtained by the method comprises low-softening-point coated asphalt and high-softening-point coated asphalt, and the coated asphalt has the advantages of good performance, high yield, low ash content, low QI content and product scalability. The preparation method and the device are relatively mild in reaction condition, can realize precise processing, are simple in process flow, timely in operation control, small in pollution and suitable for industrial production.

Description

technical field [0001] The invention relates to the field of coated asphalt, in particular to a coated asphalt and a preparation method and device thereof. Background technique [0002] As a negative electrode material for lithium ion batteries, graphite materials have the advantages of high specific capacity, good cycle performance, low lithium intercalation and removal platform, and low cost, and become the most commercially valuable negative electrode materials for lithium ion batteries. However, due to the poor compatibility of graphite with organic solvent electrolytes, people have begun to modify and modify graphite materials such as surface coating, and coating asphalt is the most commonly used. Modification methods include doping with other elements, surface oxidation treatment, surface coating treatment, etc. [0003] At present, the coated asphalt is basically monopolized by foreign countries, the price is high, and most of them are produced from oil-based asphalt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/00C10C3/10C10C3/06C10C3/04
CPCC10C3/00C10C3/10C10C3/06C10C3/04
Inventor 辛凡文王洪学郑伦杨葛灵高山松向柠
Owner CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD
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