Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Process for extracting and processing modified asphalt

A processing technology and modified asphalt technology, applied in the field of extraction and processing technology of modified asphalt, can solve problems such as low viscosity, and achieve the effects of simple process, non-flammable, and reasonable structure ratio

Inactive Publication Date: 2015-01-14
中山市鸿程科研技术服务有限公司
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is simple and energy consumption is reduced, but an environmentally friendly asphalt with high tensile strength, heat insulation and fire protection, low viscosity, high purity and strong adhesion cannot be produced

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of extraction processing technology of modified asphalt, described processing technology comprises the steps:

[0021] (1) The crude oil is dehydrated at the bottom of the dehydration tower, and sent to the fractionation tower connected to the initial distillation tower through a tubular heating furnace. Medium-temperature bitumen can be recovered from the initial distillation tower. The temperature at the top of the dehydration tower is 100°C. The production temperature of medium-temperature asphalt is 330°C, and the absolute pressure at the top of the fractionation column is 40kPa, among which activated carbon is placed at the top of the fractionation column;

[0022] (2) Add an alkane solvent to the obtained medium-temperature asphalt, and filter, and the filtrate is purified asphalt with tar acid removed;

[0023] (3) Add the above-mentioned purified asphalt into the reaction kettle, heat to 300°C, and under the condition of stirring, pass high-concentratio...

Embodiment 2

[0027] Example 2: The rest are the same as in Example 1, except that the temperature at the top of the dehydration tower in step (1) is 110°C, and the modified mixture in step (4) contains 20% polyethylene copolymer and 40% SBS rubber In step (5), when the temperature of the oxidized asphalt drops to 150°C, a modified mixture is added. In step (6), a fatty acid is used as an emulsifier, 0.2% asbestos wool is added, and the reaction is performed for 3 hours.

Embodiment 3

[0028] Example 3: The rest are the same as in Example 1, except that the temperature at the top of the dehydration tower in step (1) is 80°C, and the modified mixture in step (4) contains 30% polyethylene copolymer and 30% SBS rubber In step (5), when the temperature of the oxidized asphalt drops to 165°C, a modified mixture is added. In step (6), a fatty acid is used as an emulsifier, 0.4% asbestos wool is added, and the reaction is carried out for 4 hours.

[0029] In the above three examples, the prepared asphalt was subjected to the oxidation acceleration test, and discoloration occurred in 3 months, and disintegration occurred after half a year, which was 3 times stronger than that of unmodified asphalt. Melting, heat resistance is stronger than ordinary asphalt for 1 hour, and after melting, the volume sticking to the wheel is less than ordinary asphalt.

[0030] In this kind of asphalt extraction process, the structure ratio is reasonable, the process is simple, and i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a process for extracting and processing modified asphalt, and relates to the field of mechanical and chemical processes. The process comprises the following steps: preparing environment-friendly asphalt with high tensile strength, heat insulation, fire prevention, low viscosity, high purity and high adhesive force through the processes of extraction, purification, oxidization, modification, solubilization and the like; adding the purified asphalt to a reaction kettle, and heating to 300 DEG C; introducing high-concentration air into the reaction kettle for 30 minutes under the condition of stirring to prepare oxidized asphalt; sequentially adding 40% by weight of aggregates, 20%-50% by weight of polyethylene copolymers and 10%-40% by weight of SBS rubber to a high-shear grinding machine, grinding, then adding the aggregates, the polyethylene copolymers and the SBS rubber to a premixing kettle, and mixing for 30 minutes to obtain a modified blending agent; and mixing with the oxidized asphalt, adding 1% by weight of surface active agents, 5% by weight of emulsifying agents and deionized water at 100 DEG C under the condition of stirring, uniformly mixing, then adding 0.2%-0.5% by weight of asbestos wool at 80 DEG C under the condition of stirring, then heating to 200 DEG C under the condition of stirring, and reacting for 3-5 hours to obtain the modified asphalt.

Description

technical field [0001] The invention relates to the field of mechanized chemical technology, in particular to an extraction and processing technology of modified asphalt. Background technique [0002] Asphalt is a dark brown complex mixture composed of different molecular weight hydrocarbons and their non-metallic derivatives. It is in liquid state and is a waterproof, moisture-proof and anti-corrosion organic gelling material. It is used in coatings, plastics, rubber and other industries and paving Road surface, etc. In civil engineering, asphalt is widely used waterproof material and anti-corrosion material, mainly used in waterproofing of roof, ground and underground structures, anti-corrosion of wood and steel, asphalt is also widely used in road engineering as pavement structure cementing material, After it is mixed with mineral materials of different compositions in proportion, asphalt pavement with different structures can be built. Modified asphalt is mixed with rubb...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/08C08L53/02C08K7/12C08K3/22C08J3/03C10G53/04C10C3/04
Inventor 李丽娟王建武
Owner 中山市鸿程科研技术服务有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com