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Method for preparing high-efficiency modified asphalt

A modified asphalt, high-efficiency technology, applied in textiles and papermaking, building components, fiber chemical characteristics, etc., can solve the problems of high energy consumption and long time consumption, and achieve simple preparation process, short time consumption and high product softening point Effect

Inactive Publication Date: 2011-08-03
BEIJING ZHONGSHIHONG INSTALLATION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Asphalt is mainly used for road paving, repair and maintenance. With the development of technology and the continuous improvement of environmental protection requirements, asphalt is used more and more widely. Among them, asphalt has become a main source of raw materials for the production of activated carbon materials, but In the current asphalt preparation process, especially the asphalt material preparation process used to make carbon fiber, there are generally disadvantages of long time consumption and high energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add petroleum asphalt with a carbon content of more than 50%, modifier, and potassium permanganate into the reactor at a weight ratio of 100:5:5, and heat the reactor to 200°C to prepare molten asphalt; Add the prepared molten asphalt into the atomizing and tempering tower with a temperature of 400°C, atomize and temper the molten asphalt for 3 hours; then input the atomized and tempered molten asphalt into the emulsification device at a temperature of 250°C and adding an emulsifier accounting for 5% by mass of the amount of asphalt for emulsification and conditioning; after emulsification and conditioning, cool down to below 230°C and discharge to obtain high-efficiency asphalt.

Embodiment 2

[0026] Add petroleum asphalt with a carbon content of more than 50%, modifier, and potassium nitrate into the reactor at a weight ratio of 100:7:5, and heat the reactor to 230°C to prepare molten asphalt; The good molten asphalt is added to the atomizing and tempering tower with a temperature of 380°C, and the molten asphalt is atomized and tempered for 4.5 hours; then the atomized and tempered molten asphalt is input into the emulsification device at a temperature of 300°C, And add an emulsifier accounting for 7% of the amount of asphalt by mass for emulsification and conditioning; after emulsification and conditioning, cool down to below 200°C and discharge to obtain high-efficiency asphalt.

Embodiment 3

[0028] Put the asphalt, modifier and naphthalene obtained by thermal condensation polymerization of petroleum residue with a carbon content of more than 50% into the reactor at a weight ratio of 100:5:7, and heat the reactor to 250°C. Prepare molten asphalt; add the prepared molten asphalt to the atomization conditioning tower with a temperature of 430°C, atomize and condition the molten asphalt for 4 hours; then input the atomized and tempered molten asphalt into the ℃, and add an emulsifier accounting for 10% by mass of the asphalt to carry out emulsification and conditioning; after emulsification and conditioning, cool down to below 200 ℃ and discharge to obtain high-efficiency asphalt.

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Abstract

The invention discloses a method for preparing high-efficiency modified asphalt, which is performed according to the following steps: (1) adding the asphalt, a modifier and an oxidizer into a reaction kettle according to a weight ratio of 100:(1-15):(1-15), heating the reaction kettle to 200 to 300 DEG C, and preparing molten asphalt; (2) adding the prepared molten asphalt into an atomization conditioning tower, and performing the atomization conditioning of the molten asphalt for 2 to 6 hours; (3) adding the atomization-conditioned molten asphalt into an emulsifying device at 250 to 400 DEG C, and adding an emulsifier to perform emulsification conditioning; and (4) cooling to 170 to 200 DEG C and discharging to obtain high-efficiency asphalt. In the invention, the atomization technique improves the carbon content of the asphalt, and the emulsification technique makes the asphalt easily flowable and uniform, the preparation process is simple and quick, the softening point of the product is low, and the comprehensive cost of the product is low.

Description

technical field [0001] The invention relates to the technical field of asphalt preparation, in particular to a method for preparing highly efficient modified asphalt. Background technique [0002] Asphalt is mainly used for road paving, repair and maintenance. With the development of technology and the continuous improvement of environmental protection requirements, asphalt is used more and more widely. Among them, asphalt has become a main source of raw materials for the production of activated carbon materials, but In the current asphalt preparation process, especially the asphalt material preparation process used to make carbon fiber, there are generally disadvantages of long time consumption and high energy consumption. Contents of the invention [0003] The purpose of the present invention is to provide a high-efficiency modified asphalt preparation method with high softening point, short time consumption and low energy consumption in view of the defects of the prior ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C01B31/02D01F9/145
Inventor 张吉太刘明秋邹开良
Owner BEIJING ZHONGSHIHONG INSTALLATION ENG
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