CN1212990A - Method for producing high-viscosity asphalt - Google Patents
Method for producing high-viscosity asphalt Download PDFInfo
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- CN1212990A CN1212990A CN 97116936 CN97116936A CN1212990A CN 1212990 A CN1212990 A CN 1212990A CN 97116936 CN97116936 CN 97116936 CN 97116936 A CN97116936 A CN 97116936A CN 1212990 A CN1212990 A CN 1212990A
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Abstract
A process for preparing high-viscosity asphalt used for highway is prepared from the propane deasphalting asphalt extracted from Oman's crude oil through semi-oxidizing, and features high viscosity of 600-1000 Pa.s at 60 deg.C and high resistanc to high-temp deformation and low-temp cracking.
Description
The invention belongs to a kind of high viscosity traffic route PRODUCTION OF PITCH method.
Along with expanding economy, large-scale heavy duty car amount is more and more, and the high-temperature stability of bituminous pavement becomes the important factor of highway damage, and this phenomenon is even more serious in the high temperature area.Traditional asphalt production process is normal pressure or distillation under vacuum, make the deep drawing of must reducing pressure of the good pitch of high-temperature behavior, and this will be directed at its group composition unreasonable distribution, and pitch is become fragile, and low temperature is easy to crack, can not adapt to changes of seasons.The technology relevant with the present invention is that Japanese pitch association delivered " exploitation of heavy duty road asphalt (half oxidized bitumen) " in 1984.It is that half oxidized bitumen is produced in direct half oxidation after the crude distillation that Japan produces this bituminous technology, though the pitch that this explained hereafter goes out can make its high-temperature behavior make moderate progress, but concerning general asphalt stock, still be difficult to produce the ideal product, particularly the resistance to deterioration of product is bad, has influenced life-time service effect behind the bituminous pavement road.The performance of asphaltic products. is not only relevant with working method, and prior source and the kind that depends on raw material.Therefore, for obtaining the high-temperature behavior excellence, and take into account the asphaltic products. of low-temperature performance, not only will select suitable production technique, also must find suitable raw material.
The purpose of this invention is to provide a kind of high viscosity method for producing road asphalt.60 ℃ of viscosity of this bituminous are higher than commercially available road bitumen, and its viscosity is 600-1000Pa.s, and its high temperature rutting resistance is improved greatly, and its low-temperature performance is protected.
The present invention is a raw material with the vacuum residuum of Oman's crude oil, and gained pitch behind propane deasphalting is produced through half oxide treatment again.Pitch by its gained is the heavy duty road asphalt with higher rutting resistance.The pitch making high-grade highway that adopts the inventive method to produce, high-temperature stable, low temperature do not ftracture, and workability is better simultaneously.If the vacuum residuum of Oman's crude oil is directly carried out half oxide treatment,, can't adapt to the influence of seasonal variation though the asphaltic products. high-temperature behavior that obtains can guarantee that low-temperature performance, especially low-temperature ductility are very low.Its reason mainly is that straight run vacuum residuum still contains part undesirable components, particularly light constituent, and therefore, propane deasphalting technology is indispensable process.
Method of the present invention is, at first the vacuum residuum of Oman's crude oil carried out general propane deasphalting and handles, and its processing condition are: 30-60 ℃ of extraction tower column bottom temperature, and tower top temperature 60-90 ℃, solvent ratio 1-10: 1,110-150 ℃ of raw material inlet temperature of stabilizer.
The asphalt stock that obtains through propane deasphalting is penetration degree 90～200 (1/10mm), and group composition is that (15w%～25w%), fragrance divide (35w%～50w%), colloid (30w%～40w%), bituminous matter (0.5w%～5w%) to saturated branch.
150～280 ℃ of temperature of reaction, reaction times 3～10hr, air feeding amount 0.01～0.3 l/Kg.hr in half oxidising process.Reaction unit is the small-sized blowing still of aspect ratio 1.5: 1～6: 1.Under these conditions, qualified asphalt stock is carried out half oxide treatment, can obtain the high viscosity heavy traffic paving asphalt of 60 ℃ of viscosity at 600～1000Pa.s.
Compare with existing technology, outstanding feature of the present invention be with straight-run pitch after the propane deasphalting device is handled, select the raw material in the above-mentioned penetration degree scope for use, handle through half oxidizing process again, just can produce high temperature viscosity and be higher than 2～3 times of commercially available heavy traffic paving asphalts at the same level, and ageing resistance index viscosity when 15 ℃ of ductilities of low-temperature performance index are far above the product of Japan's high-viscosity asphalt at the same level, and industrialization also easily realizes.
The every performance of high viscosity heavy traffic paving asphalt of gained all satisfies Japanese AC-80 level heavy traffic paving asphalt standard.
Example 1
Get Oman third and take off (penetration degree is 91 1/10mm) pitch 500g, the small-sized stills for air blowing of packing into, under the condition of 260 ℃ of temperature, blowing air amount 0.2 l/Kg.hr, oxidation 4 hours, the result is as follows in the taking-up product analysis:
As seen quality product meets Japanese AC-80 heavy traffic paving asphalt standard.Example 2
| Project | 60 ℃ of viscosity Pa.s | Viscosity ratio (180 ℃) | Kinematic viscosity mm 2/s | The film heating quality changes % | Penetration degree 0.1mm | Ductility (15 ℃) cm | Flash-point ℃ | Solubleness % | Density g/cm 3 |
| Product property | ???734 | ???2.16 | ???160 | ???0.11 | ???50 | ???40 | ＞260 | ?＞99.0 | |
| Japan's asphaltic nature at the same level | ???754 | ???5.57 | ??92.6 | ???0.09 | ???64 | ????7 | ＞260 | ?＞99.9 | ?1.009 |
| ??AC-80: | ?800±200 | ????＜5 | ?＜200 | ???＜0.6 | ??＞40 | ＞260 | ?＞99.0 | ?＞1.00 |
Get Oman's third diasphaltene (penetration degree 130 1/10mm) 500 grams, the small-sized stills for air blowing of packing into, 250 ℃ of temperature, under the condition of blowing air amount 0.15 l/Kg.hr, oxidation 6 hours, the result is as follows in the taking-up product analysis:
Example 3
| Project | 60 ℃ of viscosity Pa.s | Viscosity ratio (180 ℃) | Kinematic viscosity mm 2/s | The film heating quality changes % | Penetration degree 0.1mm | Ductility (15 ℃) cm | Flash-point ℃ | Solubleness % | Density g/cm 3 |
| Product property | ???780 | ??1.72 | ???140 | ????-0.1 | ???49 | ???85 | ＞260 | ?＞99.9 | ???1.003 |
| Japan's asphaltic nature at the same level | ???754 | ??5.57 | ???92.6 | ????0.09 | ???64 | ????7 | ＞260 | ?＞99.9 | ???1.009 |
| ??AC-80 | ?800±200 | ??＜5 | ??＜200 | ????＜0.6 | ??＞40 | ＞260 | ?＞99.0 | ??＞1.00 |
Third diasphaltene (penetration degree 160 1/10mm), 500 grams, the small-sized stills for air blowing of packing into, 240 ℃ of temperature, under the condition of blowing air amount 0.1 l/Kg.hr, oxidation 7 hours, the result is as follows in the taking-up product analysis:
Example 4
| Project | 60 ℃ of viscosity Pa.s | 180 ℃ of viscosity ratio | Kinematic viscosity mm 2/s | The film heating quality changes % | Penetration degree 0.1mm | Ductility (15 ℃) cm | Flash-point ℃ | Solubleness % | Density g/cm 3 |
| Product property | ???720 | ??1.60 | ??150 | ????-0.09 | ???50 | ???60 | ＞260 | ?＞99.9 | ??1.006 |
| Japan's asphaltic nature at the same level | ???754 | ??5.57 | ??92.6 | ????0.09 | ???64 | ???7 | ＞260 | ?＞99.9 | ??1.009 |
| ??AC-80: | ?800±200 | ???＜5 | ?＜200 | ????＜0.6 | ??＞40 | ＞260 | ?＞99.0 | ?＞1.00 |
Get Oman's third diasphaltene (penetration degree 200 1/10mm) 500 grams, the small-sized stills for air blowing of packing into, 160 ℃ of temperature, under the condition of blowing air amount 0.3 l/Kg.hr, oxidation 8 hours, the result is as follows in the taking-up product analysis:
| Project | 60 ℃ of viscosity Pa.s | 180 ℃ of viscosity ratio | Kinematic viscosity mm 2/s | The film heating quality changes % | Penetration degree 0.1mm | Ductility (15 ℃) cm | Flash-point ℃ | Solubleness % | Density g/cm 3 |
| Product property | ???700 | ??1.80 | ???170 | ????-0.08 | ????53 | ???65 | ＞260 | ?＞99.9 | ?1.001 |
| Japan's asphaltic nature at the same level | ???754 | ??5.57 | ???92.6 | ????0.09 | ????64 | ????7 | ＞260 | ?＞99.9 | ?1.009 |
| ??AC-80 | ?800±200 | ??＜5 | ???＜200 | ???＜0.6 | ???＞40 | ＞260 | ?＞99.0 | ?＞1.00 |
More than two routine product properties all reached Japanese AC-80 standard-required, compare with Japan pitch at the same level, viscosity when 15 ℃ of ductility indexs all improves greatly.
Claims (3)
1. high viscosity heavy traffic paving asphalt, it is characterized in that selecting for use Oman's straight-run pitch through third take off handle after penetration degree be that the pitch of 80～200 1/10mm is raw material, be that second oxide treatment of condition of 0.01～0.3 l/Kg.h makes in 150～280 ℃ of oxidizing temperatures and bubbling air amount.
2. according to the high-viscosity asphalt of claim 1, it is characterized in that third diasphaltene handled through propane deasphalting with Oman's straight-run pitch, its penetration degree are that the pitch of 80～200 1/10mm is as raw material.Its group composition is saturated branch 18～21%, fragrance branch 50～53%, colloid 26～28%, bituminous matter 1～3%.
3. according to the high-viscosity asphalt of claim 1, it is characterized in that half oxidizing reaction temperature is 150～280 ℃, the blowing air amount is that the following reaction times of condition of 0.01～0.3 l/Kg.h is 2～8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN971169365A CN1064987C (en) | 1997-09-29 | 1997-09-29 | Method for producing high-viscosity asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN971169365A CN1064987C (en) | 1997-09-29 | 1997-09-29 | Method for producing high-viscosity asphalt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1212990A true CN1212990A (en) | 1999-04-07 |
| CN1064987C CN1064987C (en) | 2001-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN971169365A Expired - Lifetime CN1064987C (en) | 1997-09-29 | 1997-09-29 | Method for producing high-viscosity asphalt |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340636C (en) * | 1999-10-29 | 2007-10-03 | 埃克森美孚研究工程公司 | Method for enhancing asphalt properties |
| CN100365098C (en) * | 2004-10-29 | 2008-01-30 | 中国石油化工股份有限公司 | Preparation method of asphalt for water power engineering |
| EP4029923A1 (en) * | 2021-01-18 | 2022-07-20 | OCI Company Ltd. | Method for preparing petroleum-based pitch having high softening point |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4794835B2 (en) * | 2004-08-03 | 2011-10-19 | 東京応化工業株式会社 | Polymer compound, acid generator, positive resist composition, and resist pattern forming method |
-
1997
- 1997-09-29 CN CN971169365A patent/CN1064987C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340636C (en) * | 1999-10-29 | 2007-10-03 | 埃克森美孚研究工程公司 | Method for enhancing asphalt properties |
| CN100365098C (en) * | 2004-10-29 | 2008-01-30 | 中国石油化工股份有限公司 | Preparation method of asphalt for water power engineering |
| EP4029923A1 (en) * | 2021-01-18 | 2022-07-20 | OCI Company Ltd. | Method for preparing petroleum-based pitch having high softening point |
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| Publication number | Publication date |
|---|---|
| CN1064987C (en) | 2001-04-25 |
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Owner name: CHINA PETROCHEMICAL CORPORATION; CHINA PETROLEUM & Free format text: FORMER NAME OR ADDRESS: CHINA PETRO-CHEMICAL CORP.; FUSHUN PETROCHEMICAL INSTITUTE., CHINA PETROCHEMICAL CORP. |
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| CP01 | Change in the name or title of a patent holder |
Patentee after: China Petrochemical Group Corp. Patentee after: Sinopec Group Fushun Research Institute of Petroleum and Petrochemicals Patentee before: China Petrochemical Corporation Patentee before: Fushun Research Inst. of Petroleum Processing, China Petro-chem. Corp. |
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| CX01 | Expiry of patent term |
Granted publication date: 20010425 |
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| CX01 | Expiry of patent term |