Preparation method of asphalt material, asphalt material prepared by the same and application thereof

An asphalt material and reaction technology, which is applied in the chemical processing of tar asphalt/petroleum asphalt/natural asphalt, building insulation materials, building components, etc. The effect of low volatile content and easy industrial production

Inactive Publication Date: 2017-03-22
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

None of these patents addresses the problem of excessively high levels of toxic substances in binder pitch

Method used

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preparation example Construction

[0021] The invention provides a method for preparing asphalt material, the method comprising: purging raw materials containing aromatic compounds for purging reaction under inert gas purging to obtain asphalt materials; wherein, the total amount of raw materials containing aromatic compounds Based on mass, the flow rate of the inert gas is 0.5-10 liters / (min·kg); under normal pressure, the temperature of the purging reaction is 380-440°C, and the time of the purging reaction is 1- 10 hours. Preferably, before performing the purging reaction, the method of the present invention may also include: first subjecting the raw material containing aromatic compounds to a thermal polycondensation reaction to obtain a thermal polycondensation product; then subjecting the thermal polycondensation product to the The reaction is purged to obtain the pitch material.

[0022] According to the method of the present invention, the purging reaction refers to reacting the raw material containing...

Embodiment 1

[0036]Using coal tar pitch from Xuyang Coal Chemical Industry Co., Ltd. with a carbon-hydrogen ratio of 1.28, a gel permeation chromatography (GPC) number average molecular weight of 420, and a weight average molecular weight of 670 as a raw material, the asphalt material was directly carried out in a high-pressure reactor for purging reaction. A1, see Table 1 for properties.

[0037] Wherein, the condition of purging reaction is: the flow rate of nitrogen is 2 liters / (min kg), the heating rate is 5 ℃ / min, the temperature of purging reaction is 400 ℃, the time of purging reaction is 8 hours, stirring speed at 100 rpm.

Embodiment 2

[0039] The coal direct liquefaction residue of Shenhua Coal Oil Chemical Co., Ltd. with a carbon-to-hydrogen ratio of 1.3, a gel permeation chromatography (GPC) number average molecular weight of 361, and a weight average molecular weight of 533 is used as a raw material, and thermal polycondensation is carried out sequentially in a high-pressure reactor After the reaction and purging reaction, the asphalt material A2 was obtained, and its properties are shown in Table 1.

[0040] Among them, the conditions of the thermal polycondensation reaction are as follows: the heating rate is 5°C / min, the reaction temperature is 420°C, the nitrogen is pressurized, the pressure is 3Mpa, the time is 1 hour, and the stirring speed is 200 rpm;

[0041] The conditions of the purging reaction are: the flow rate of nitrogen is 2 liters / (min.kg), the temperature of the purging reaction is 380° C., the time of the purging reaction is 7 hours, and the stirring speed is 100 rpm.

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Abstract

The invention discloses a preparation method of an asphalt material, an asphalt material prepared by the method and application thereof. The preparation method comprises: carrying out purging reaction on an aromatic compound-containing raw material under inert gas purging to obtain an asphalt material. Specifically, based on the total mass of the aromatic compound-containing raw material, the flow rate of the inert gas is 0.5-10L/(min.kg), the purging reaction temperature is 380-440DEG C, and the purging reaction time is 1-10h. The asphalt material prepared by the preparation method provided by the invention can be applied to preparation of waterproof materials, anti-corrosion materials, electrode binders and automobile damping materials, and has very excellent environmental protection performance.

Description

technical field [0001] The invention relates to a method for preparing asphalt material, the asphalt material prepared by the method and its application. Background technique [0002] Graphite electrodes are mainly made of petroleum coke and needle coke as raw materials, coal tar pitch as binder, and are made through calcination, batching, kneading, pressing, roasting, graphitization, and machining. In the published graphite electrode preparation patent, the binder used in CN201110125863.8 is medium temperature modified coal tar pitch, and the binder used in CN200810080019.6 is medium temperature coal tar pitch, medium temperature modified coal tar pitch or coal tar pitch. CN200910075850.7 also uses modified asphalt as a binder, and the softening point of the modified asphalt used is 95-100°C. The coal tar pitch as binding agent in these patents contains a large amount of poisonous and harmful volatile substances. According to the article "Occupational Diseases and Prevent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C3/04C08L95/00
Inventor 刘均庆宫晓颐郑冬芳盛英张胜振梁文斌
Owner CHNA ENERGY INVESTMENT CORP LTD
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