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Warm-mix hard asphalt mixture and preparation method thereof

A hard asphalt and mixture technology, applied in the direction of climate change adaptation, can solve the problems of environmental pollution, asphalt thermal stability and poor anti-aging performance, shorten the reaction time, improve the anti-rutting performance of the road surface, improve the Effect of Aging Properties

Active Publication Date: 2018-11-02
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

[0058] (1) Preparation of warm mix agent

[0059] 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%.

[0060] 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;

[0061] ②Weigh 7000g of the fourth-line extraction oil with 70% aromatics content, and add 441g of complex [Cu(NH 3 ) 4 〕SO 4, placed in another container and heated to 350°C, and kept stirring at this temperature for 180min to obtain aromatic hydrocarbon complex components;

[0062] ③Introduce the aromatic hydrocarbon complexing component into the above-mentioned intermediate, keep th...

Embodiment 2

[0068] (1) Preparation of warm mix agent

[0069] 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%.

[0070] 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;

[0071] 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 ], placed in another container and heated to 270°C, and kept stirring at this temperature for 120 minutes to obtain aromatic hydrocarbon complex components;

[0072] ③Introduce the aromatic hydrocarbon complexing component into the above-mentioned interm...

Embodiment 3

[0078] (1) Preparation of warm mix agent

[0079] 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%.

[0080] 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;

[0081] ②Weigh 3500g of phenolic refined oil with aromatics content of 78%, and add 164g of complex [Ni(CO) 4 ], placed in another container and heated to 310°C, stirred at a constant temperature for 160min at this temperature to obtain the aromatic complex component;

[0082] ③Introduce the aromatic hydrocarbon complexing component into the above-mentioned intermediate, keep the temperature at ...

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Abstract

The invention discloses a warm mixing hard asphalt mixture and a preparation method thereof. The warm mixing hard asphalt mixture comprises the following components in parts by weight: 4.0-6.0 parts of warm mixing hard asphalt, 1.0-3.0 parts of mineral powder and 91.0-95.0 parts of aggregates. The warm mixing hard asphalt comprises the following components in parts by weight: 0.5-7 parts of a warm mixing agent and 93-99.5 parts of matrix asphalt. The preparation method of the warm mixing agent comprises the following steps: under the effect of a catalyst, reacting macromolecular alkane with halogen simple substances to obtain a midbody; evenly mixing aromatic oil with a complex to obtain an aromatic complex component; and reacting the aromatic complex component and the midbody at a certain temperature to obtain the warm mixing agent used in the invention. The warm mixing hard asphalt used in the warm mixing hard asphalt mixture contains the warm mixing agent, the warm mixing effect can be achieved, the high-temperature performance and low-temperature performance of the asphalt are considered, the generation amount of harmful gas is reduced, the caking property of the asphalt is improved, the heat stability of the asphalt can be improved, and the anti-ageing performance is also 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 Patents(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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