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Warm mixed flame retardant asphalt, mixture containing warm mixed flame retardant asphalt and their preparation methods

An asphalt mixture and warm mix technology, which is applied in building thermal insulation materials, building components, climate change adaptation, etc., can solve the problems of high cost, affecting the anti-rutting performance of asphalt mixture, and volatile.

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

However, there are many components added and the cost is high; the carbon distribution of the C12-C33 aliphatic compound as an organic viscosity reducer is relatively wide, especially the presence of small molecular compounds containing C12, which are easy to volatilize after being heated, and will affect the asphalt. Anti-rutting performance of mixture

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0068] It is divided into three steps: (A) preparation of warm mix agent, (B) preparation of warm mix flame retardant asphalt, (C) preparation of warm mix flame retardant asphalt mixture.

[0069] (A) Preparation of warm mixing agent

[0070] Including (1) hydrogenation conversion and (2) sweating.

[0071] (1) Hydrogenation conversion

[0072] The wax oil product (n-paraffin content of 95.5wt%; drop melting point of 86.2°C; penetration degree (25°C) 55 dmm) from the low-temperature FT synthesis experimental device of China Petroleum and Chemical Corporation is used as raw material, and the FHJ-2 catalyst ( A Ni / Al 2 O 3 Commercial catalyst, developed and produced by Fushun Petrochemical Research Institute. The active metal content is 40% based on oxide. The catalyst is subjected to conventional reduction treatment before use) under the action of reaction pressure of 6.5MPa, reaction temperature of 220°C, and volumetric space velocity of 1.0h -1 Hydrogenation is carried out at a volu...

Embodiment 2

[0095] It is divided into three steps: (A) preparation of warm mix agent, (B) preparation of warm mix flame retardant asphalt, (C) preparation of warm mix flame retardant asphalt mixture.

[0096] (A) Preparation of warm mixing agent

[0097] This embodiment includes: (1) Hydrogenation conversion and (2) Sweating.

[0098] (1) Hydrogenation conversion

[0099] The wax oil product (normal paraffin content 90.0wt%; drop melting point 82.6°C; penetration degree (25°C) 62dmm) from the low-temperature FT synthesis experimental device of China Petroleum and Chemical Corporation is used as raw material, and the catalyst (Mo-Ni / Al 2 O 3 , The active metal content as oxide is 20%) under the action of reaction pressure 3.0MPa, reaction temperature 300℃, volumetric space velocity 2.0h -1 Hydrogenation is carried out at a volume ratio of 100:1 to hydrogen liquid to convert olefins and oxygen-containing compounds.

[0100] Hydrogenation product properties: weight content of normal alkanes 93.3%; d...

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Abstract

The invention discloses warm mixed flame retardant asphalt. The asphalt comprises a warm mixing agent, basic asphalt and a fire retardant. A preparation method of the warm mixing agent comprises carrying out hydro-conversion on an F-T synthesis product as a raw material 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 flame retardant asphalt has good flame retardant effects, a low service temperature, high thermal stability and good heat aging resistance and obviously reduces harmful gas during the asphalt construction.

Description

Technical field [0001] The invention relates to a warm-mix asphalt, in particular to a warm-mix flame-retardant asphalt and a preparation method thereof, belonging to the field of petroleum industry and basic material chemistry. Background technique [0002] With the continuous increase in the mileage of asphalt highways in my country, the number of highway tunnels is also increasing, ranging from tens of meters to several kilometers or tens of kilometers in length. In the process of paving the asphalt pavement in the tunnel, due to the poor ventilation in the tunnel, the generated asphalt smoke is not easy to spread, which affects the physical and mental health of the constructors. For this reason, some people add flame retardants or smoke suppressants to the asphalt to reduce the amount of asphalt smoke and reduce the harm to construction personnel, but the effect is not ideal. Studies have found that during the use of asphalt, the amount of asphalt smoke generated is closely ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/06C08K3/22C04B26/26C10G73/38
CPCC04B26/26C08L95/00C08L2201/02C08L2201/08C10G73/38C08L91/06C08K2003/2224C08K2003/2227C04B14/02C04B14/048C04B14/26C04B14/06Y02A30/30
Inventor 陈保莲孙剑锋徐青柏张志银陈杰范思远张静宁爱民李志军程国香
Owner CHINA PETROLEUM & CHEM CORP
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