Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for increasing content of asphaltene in low-asphaltene raw materials

A technology of asphaltene content and asphaltene, which is applied in the direction of processing tar pitch/petroleum pitch/natural pitch by distillation, processing tar pitch/petroleum pitch/natural pitch by chemical methods, and only multi-stage series refining and cracking process treatment, etc. , which can solve the problems of difficult production of SBS modified asphalt and reduction of colloid content

Active Publication Date: 2013-04-17
PETROCHINA CO LTD +1
View PDF8 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The object of the present invention is to provide a method for increasing the asphaltene content in low-asphaltene raw materials, which can increase the asphaltene content in low-asphaltene raw materials, reduce the colloid content, optimize the composition, and solve the problem of using low-asphaltene raw materials to produce SBS Difficult problems of modified asphalt

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

[0025] Use deoiled asphalt with an asphaltene content of less than 0.5% as the raw material, heat it to 390°C in a heating furnace, enter the thermal cracking fractionation tower, and stay in the tower for 60 minutes. The bottom residue is used as a blending component with high asphaltene content. Its asphaltene content is 6.37%, colloid content is 35.07%, softening point is 45.8°C, and penetration is 85 (1 / 10mm), which will account for 74% of the total weight of base asphalt raw materials. % of the blending component is mixed with road asphalt accounting for 26% of the total weight of base asphalt raw materials to prepare base asphalt. The base asphalt is greater than 150cm and the softening point is 48.5°C. The base asphalt meets the technical requirements of JTG F40-2004 Road Petroleum Asphalt in the "Technical Specifications for Highway Asphalt Pavement Construction" issued by the Ministry of Communications, thus meeting the requirements of modified asphalt for base asphalt...

Embodiment 2

[0027] Use deoiled asphalt with an asphaltene content of less than 0.5% as raw material, heat it to 390°C in a heating furnace, enter the thermal cracking fractionation tower, and stay in the tower for 50 minutes. The tower bottom residue is used as a blending component with high asphaltene content. Its asphaltene content is 5.05%, colloid content is 35.85%, softening point is 45.0°C, and penetration is 90 (1 / 10mm), which will account for 84% of the total weight of base asphalt raw materials. % of the blending component is mixed with road asphalt accounting for 16% of the total weight of base asphalt raw materials to prepare base asphalt, the penetration of which is 98 (1 / 10mm), and the ductility (15°C, 5cm / min) is greater than 150cm, softening point 47.2°C, the base asphalt meets the technical requirements of JTG F40-2004 Road Petroleum Asphalt in the "Technical Specifications for Highway Asphalt Pavement Construction" issued by the Ministry of Communications, thus meeting the...

Embodiment 3

[0029] Use deoiled asphalt with an asphaltene content of less than 0.5% as raw material, heat it to 400°C in a heating furnace, enter the thermal cracking fractionation tower, and stay in the tower for 50 minutes. The tower bottom residue is used as a blending component with high asphaltene content. Its asphaltene content is 8.92%, colloid content is 34.11%, softening point is 51.2°C, and penetration is 71 (1 / 10mm), which will account for 94% of the total weight of base asphalt raw materials. % of the blending component is miscible with 6% of the total weight of the raw material in a high-aromatic solvent to prepare a base asphalt with a penetration of 95 (1 / 10mm) and a ductility (15°C, 5cm / min) of more than 150cm The softening point is 48.6°C. The base asphalt meets the technical requirements of JTG F40-2004 Road Petroleum Asphalt in the "Technical Specifications for Construction of Highway Asphalt Pavement" issued by the Ministry of Communications, thus meeting the requiremen...

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

PropertyMeasurementUnit
softening pointaaaaaaaaaa
penetrationaaaaaaaaaa
flash pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for increasing the content of asphaltene in low-asphaltene raw materials. The method comprises the following steps of: heating residual oil or deoiled asphalt, and then enabling the heated residual oil or deoiled asphalt to enter a thermal cracking factional distillation column to obtain thermal cracking produced oil, wherein the heating temperature ranges from 390 DEG C to 450 DEG C; and carrying out reduced-pressure factional distillation on the thermal cracking produced oil to obtain column bottom residues for blending matrix asphalt used for producing modified asphalt, wherein the residual oil is reduced-pressure residual oil with the atmospheric boiling point being higher than 350 DEG C, the reduced-pressure residual oil is obtained after gasoline, coal diesel and lubricating oil components are separated from thick crude oil through atmospheric and reduced-pressure distillation, and the residual oil contains 0.1-0.5% of asphaltene and 45-55% of colloid; or the residual oil is deoiled asphalt obtained after a heavy lubricating oil component is removed through solvent deasphalting, and the deoiled asphalt contains 0.1-0.5% of asphaltene and 50-60% of colloid. By using the method, the content of the asphaltene in the low-asphaltene raw materials is increased from 0.1-0.5% to 5-20%.

Description

technical field [0001] The invention relates to a method for increasing asphaltene content in low (0.1-0.5%) asphaltene raw materials, more specifically, a method for increasing asphaltene content in base asphalt produced from low asphaltene raw materials. Background technique [0002] Bitumen is a hydrocarbon mixture composed of various hydrocarbons. The family composition structure of asphalt determines the physical and chemical properties and performance of asphalt products. Usually, people use silica gel-alumina adsorption chromatography separation method to separate the chemical group composition of asphalt into four components: saturated component, aromatic component, colloid and asphaltene, commonly known as the four-component method. As the core of asphalt colloidal solution, asphaltene is dispersed in other components of asphalt and forms a stable colloidal system. It is an important component of asphalt. Many properties of asphalt are related to the content of asp...

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): C10C3/02C10C3/06C10G55/04
Inventor 杨克红熊良铨汪军平蔺习雄毛三鹏甄新平秦本记王华
Owner PETROCHINA CO LTD