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Warm mix hard asphalt, and preparation method thereof

A technology of hard bitumen and matrix bitumen, applied in building thermal insulation materials, climate change adaptation, building components, etc., can solve the problems of poor thermal stability and anti-aging performance of bitumen, environmental pollution, etc. health, shorten the reaction time, use the effect of low temperature

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 use temperature of hard asphalt is relatively high, which may easily cause environmental pollution or that the use temperature can be lowered after adding a warm mix agent, but the thermal stability and anti-aging performance of the asphalt are not good. The present invention provides a Warm-mixed hard asphalt and its preparation method, adding a self-made warm-mixing agent, 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 reduce thermal aging and improve asphalt Excellent cohesiveness, which can improve the thermal stability of asphalt and improve the anti-aging performance

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Preparation of warm mix agent

[0050] 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%.

[0051] 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;

[0052] 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;

[0053] ③Introduce the aromatic hydrocarbon complexing component into the above-mentioned intermediate, keep t...

Embodiment 2

[0057] (1) Preparation of warm mix agent

[0058] 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%.

[0059] 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;

[0060] 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;

[0061] ③Introduce the aromatic hydrocarbon complexing component into the above-mentioned intermed...

Embodiment 3

[0065] (1) Preparation of warm mix agent

[0066] 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%.

[0067] 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;

[0068] 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;

[0069] ③Introduce the aromatic hydrocarbon complexing component into the above-mentioned intermediate, keep the temperature at ...

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Abstract

The invention provides a warm mix hard asphalt, and a preparation method thereof. The warm mix hard asphalt comprises, by mass, 0.5 to 7 parts of a warm mixing agent, and 93 to 99.5 parts of matrix asphalt. The preparation method comprises following steps: under the action of a catalyst, a high-molecular alkane is reacted with a halogen elementary substance at a certain temperature under a certain pressure so as to obtain an intermediate; an aromatic hydrocarbon oil and a complex are uniformly mixed so as to obtain an aromatic hydrocarbon complex compound; the aromatic hydrocarbon complex compound and the intermediate are reacted at a certain temperature so as to obtain the warm mixing agent. The warm mixing agent added in the warm mix hard asphalt is capable of realizing warm mixing of asphalt, giving consideration to the high and low temperature performance of asphalt, increasing thermal stability of asphalt, improving aging resistance, reducing application temperature of asphalt, reducing generation amount of harmful gas, and improving the cohesiveness of asphalt.

Description

technical field [0001] The invention relates to warm-mix asphalt, in particular to warm-mix hard asphalt and a preparation method thereof, belonging to the fields 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K11/00
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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