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Warm mixed modified asphalt, mixture containing warm mixed modified asphalt and their preparation methods

A technology of modified asphalt and mixture, which is applied in building insulation materials, organic chemistry, hydrogenation hydrocarbon production, etc., and can solve problems such as poor thermal stability and anti-aging performance, high service temperature, and environmental pollution

Inactive Publication Date: 2017-12-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] Aiming at the problems of high service temperature of modified asphalt in the prior art, easy to cause environmental pollution, poor thermal stability and anti-aging performance, the present invention provides a warm-mix modified asphalt

Method used

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  • Warm mixed modified asphalt, mixture containing warm mixed modified asphalt and their preparation methods
  • Warm mixed modified asphalt, mixture containing warm mixed modified asphalt and their preparation methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] (A) Preparation of warm mix agent

[0072] Including (1) hydroconversion and (2) sweating.

[0073] (1) Hydroconversion

[0074] Using the wax oil product (n-paraffin content: 95.5wt%; drop melting point: 86.2°C; penetration (25°C) 55 dmm) from the low-temperature F-T synthesis experimental device of China Petroleum & Chemical Corporation as raw material, the FHJ-2 catalyst ( A Ni / Al 2 o 3 Commercial catalyst, developed and produced by Fushun Petrochemical Research Institute, with an active metal content of 40% in terms of oxides, and the catalyst is subjected to conventional reduction treatment before use), under the action of reaction pressure 6.5MPa, reaction temperature 220°C, volume space velocity 1.0h -1 Hydrogenation is carried out under the condition of 500:1 volume ratio of hydrogen to liquid to convert olefins and oxygenates therein.

[0075] Properties of hydrogenation products: n-paraffin weight content 97.36%; drop melting point 85.0°C; penetration (25°...

Embodiment 2

[0097] (A) Preparation of warm mix agent

[0098] This embodiment includes: (1) hydroconversion and (2) sweating.

[0099] (1) Hydroconversion

[0100] Using the wax oil product (n-paraffin content: 90.0wt%; drop melting point: 82.6°C; penetration (25°C) 62 dmm) from the low-temperature F-T synthesis experimental device of China Petroleum & Chemical Corporation as raw material, the catalyst (Mo-Ni / Al 2 o 3 , the active metal content is 20% in terms of oxides), under the action of reaction pressure 3.0MPa, reaction temperature 300℃, volume space velocity 2.0h -1 Hydrogenation is carried out under the condition of 100:1 volume ratio of hydrogen to liquid to convert olefins and oxygenates therein.

[0101] Properties of hydrogenation products: n-paraffin weight content 93.3%; drop melting point 80.6°C; penetration (25°C) 65 dmm; chromatography-mass spectrometry analysis, no alcohol, alkene, acid and other substances were detected.

[0102] It can be seen that the oxygenated...

Embodiment 3

[0124] (A) Preparation of warm mix agent

[0125] Including (1) hydroconversion and (2) sweating.

[0126] (1) Hydroconversion

[0127] Using the wax oil product (n-paraffin content: 85.5wt%; drop melting point: 80.6°C; penetration (25°C) 65 dmm) from the low-temperature F-T synthesis experimental device of China Petroleum & Chemical Corporation as raw material, the catalyst (W-Ni / Al 2 o 3 , the active metal content is 70% based on oxides), under the action of reaction pressure 10.0MPa, reaction temperature 150℃, volume space velocity 0.2h -1 Hydrogenation is carried out under the condition of 990:1 volume ratio of hydrogen to liquid to convert olefins and oxygenates therein.

[0128] Properties of hydrogenation products: n-paraffin weight content 90.3%; drop melting point 77.0°C; penetration (25°C) 66 dmm; chromatography-mass spectrometry analysis, no alcohol, alkene, acid and other substances were detected.

[0129] It can be seen that the oxygenated compounds in the ...

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Abstract

The invention discloses warm mixed modified asphalt. The asphalt comprises a warm mixing agent, a polymer, basic asphalt and sulphur. The warm mixing agent is prepared by carrying out hydro-conversion on an F-T synthesis product as a raw material under action of a catalyst and carrying out special sweating on the hydrogenation product. Airflows pass through a material layer and carry away a liquid component in the sweating process so that separation effects of a solid component and the liquid component are improved and a separation rate is accelerated. Gas produced by inorganic salt decomposition forms micro-spaces in the material layer so that the liquid component fast outflows. The warm mixed modified asphalt has a low use temperature, high thermal stability and good heat aging resistance, reduces the heat aging of asphalt and reduces harmful gas.

Description

technical field [0001] The invention relates to a warm-mix asphalt, in particular to a warm-mix modified 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 is generally divided into three types according to the mixing construction temperature: hot mix asphalt mixture HMA (Hot Mix Asphalt), cold mix asphalt mixture CMA (Cold Mix Asphalt) and warm mix asphalt mixture WMA (Warm Mix Asphalt). [0003] Hot mix asphalt mixture is widely used and has good road performance. However, in the production process of hot mix asphalt mixture, asphalt and stone materials need to be mixed at a high temperature of 150°C to 180°C, which not only consumes a lot of energy, but also Moreover, a large amount of smoke and CO will be generated during the production of hot mix asphalt mixture. 2 , CO, SO 2 , NO x Such harmful gases not only pollute the envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L23/06C08L91/06C10G73/36C10G73/42C07C5/03C07C9/00C04B26/26
CPCC04B26/26C07C5/03C08L95/00C08L2205/03C10G2300/1022C08L53/02C08L91/06C08L9/06C08L23/06C07C9/00C04B18/12C04B14/28C04B14/14C04B14/048Y02A30/30Y02P20/52
Inventor 陈保莲孙剑锋范思远张志银张静宋乐春姚春雷宁爱民李志军程国香
Owner CHINA PETROLEUM & CHEM CORP
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