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Warm mix hard asphalt mixture and preparation method thereof

A technology of hard asphalt and mixture, applied in the direction of climate change adaptation, etc., can solve the problems of poor thermal stability and anti-aging performance of asphalt, environmental pollution, etc., to improve anti-aging performance, shorten reaction time, and improve adhesion. improved effect

Active Publication Date: 2017-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In order to solve the problems in the prior art that the processing and use temperature of hard asphalt mixture is too high, it is easy to cause environmental pollution or the heat stability and anti-aging performance of asphalt are not good after adding warm mix agent, although the use temperature is lowered. The invention provides a warm-mix hard asphalt mixture. A self-made warm-mix agent is added to the used asphalt, which can significantly reduce the use temperature of hard asphalt, save energy, reduce the pollution of asphalt smoke to the environment, and at the same time It can reduce thermal aging, improve the cohesiveness of asphalt, improve the thermal stability of asphalt, and improve the anti-aging performance

Method used

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  • Warm mix hard asphalt mixture and preparation method thereof
  • Warm mix hard asphalt mixture and preparation method thereof
  • Warm mix hard asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Preparation of warm mix agent

[0062] Using Ni metal as a catalyst, the CO obtained after gasification of coal, and H 2 The synthesis reaction is carried out to obtain mixed alkanes in which alkanes with carbon numbers of 30 to 60 account for 90%.

[0063]①Weigh 1000g of the above-mentioned mixed alkanes, about 1.2mol, put them in a closed container, heat to 480°C, add 3g of catalyst anhydrous CuCl 2 , keep introducing 0.89 mol of chlorine at this temperature, and feed nitrogen to keep the pressure of the reaction vessel at 3MPa, and react for 30min to obtain the intermediate;

[0064] ②Weigh 7000g of the fourth-line extraction oil with 70% aromatics content, and add 441g of complex [Cu(NH 3 ) 4 〕SO 4 And 44.1g of catalyst Cu, packed in another airtight container and heated to 350 ° C, at this temperature constant temperature reaction for 180min, to obtain aromatic complex components;

[0065] ③Introduce the aromatic hydrocarbon complexing component into the a...

Embodiment 2

[0072] (1) Preparation of warm mix agent

[0073] Using Co metal as a catalyst, the CO obtained after gasification of coal, and H 2 The synthesis reaction is carried out to obtain mixed alkanes in which alkanes with carbon numbers of 30 to 130 account for 90%.

[0074] ① Weigh 3500g of the above-mentioned mixed alkanes, about 4.5mol, put them in a closed container, heat to 400°C, add 31.5g of catalyst anhydrous MnCl 2 , keep introducing 1.16mol of chlorine at this temperature, and feed nitrogen to keep the pressure of the reaction vessel at 5MPa, and react for 60min to obtain the intermediate;

[0075] ②Weigh 1000g of catalytic cracking oil slurry with an aromatics content of 63%, and add 19g of complex K to it 4 [Fe(CN) 6 ] and 1.9g of catalyst Fe were placed in another airtight container and heated to 270°C, and reacted at a constant temperature for 120min at this temperature to obtain aromatic hydrocarbon complex components;

[0076] ③Introduce the aromatic hydrocarbon ...

Embodiment 3

[0083] (1) Preparation of warm mix agent

[0084] Using Fe metal as a catalyst, CO obtained from gasification of coal, and H 2 The synthesis reaction is carried out to obtain mixed alkanes in which alkanes with carbon numbers of 70 to 90 account for 90%.

[0085] ①Weigh 1000g of the above-mentioned mixed alkanes, about 0.8mol, put them in a closed container, heat to 440°C, add 6g of catalyst anhydrous NiCl 2 , keep the temperature and introduce 0.31mol of fluorine, and feed nitrogen to keep the pressure of the reaction vessel at 4MPa, and react for 45min to obtain the intermediate;

[0086] ②Weigh 3500g of phenolic refined oil with aromatics content of 78%, and add 164g of complex [Ni(CO) 4 ] and 16.4g of catalyst Ni were placed in another airtight container and heated to 310°C, and reacted at a constant temperature for 160min at this temperature to obtain the aromatic hydrocarbon complexing component;

[0087] ③Introduce the aromatic hydrocarbon complexing component into t...

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Abstract

The invention discloses a warm mix hard asphalt mixture and a preparation method thereof, wherein the warm mix hard asphalt mixture comprises 4.0-6.0 parts of a warm mix hard asphalt, 1.0-3.0 parts of ore powder, and 91.0-95.0 parts of an aggregate, and the warm mix hard asphalt comprises 0.5-7 parts of a warm mix agent and 93-99.5 parts of matrix asphalt. The warm mix agent preparation method comprises: under the effect of a catalyst, carrying out a reaction on a macromolecule alkane and an elemental halogen to obtain an intermediate; carrying out a reaction on an aromatic hydrocarbon oil and a complexing compound under the effect of a catalyst to obtain an aromatic hydrocarbon complexing component; and carrying out a reaction on the aromatic hydrocarbon complexing component and the intermediate at a certain temperature, and aging to obtain the warm mix agent. According to the present invention, the warm mix hard asphalt used in the warm mix hard asphalt mixture contains the warm mix agent, such that the warm mix effect can be provided, the high temperature performance and the low temperature performance of the asphalt are considered, the harmful gas generation is reduced, the adhesion of the asphalt is improved, the thermal stability of the asphalt is improved, and the aging resistance is improved.

Description

technical field [0001] The invention relates to a warm-mix hard asphalt mixture and a preparation method thereof, belonging to the field of petroleum industry and basic material chemistry. Background technique [0002] The asphalt mixture used in road engineering in the past is generally divided into two types according to the mixing construction temperature: cold mix asphalt mixture CMA (Cold Mix Asphalt) and hot mix asphalt mixture HMA (Hot Mix Asphalt). Cold-mix asphalt mixture is generally mixed and paved with emulsified asphalt or liquid asphalt and aggregate at room temperature, without heating the aggregate and binder, which can save a lot of energy. However, the initial strength of cold-mix asphalt mixture is low, and it is difficult to meet the requirements of important projects such as expressways and heavy-duty traffic roads. Hot mix asphalt mixture is widely used and has good road performance. However, in the production process of hot mix asphalt mixture, aspha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCY02A30/30
Inventor 陈保莲范思远张静宁爱民李志军程国香
Owner CHINA PETROLEUM & CHEM CORP
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