CN102839017A - Method for improving 60 DEG C dynamic viscosity of pavement petroleum asphalt - Google Patents
Method for improving 60 DEG C dynamic viscosity of pavement petroleum asphalt Download PDFInfo
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- CN102839017A CN102839017A CN2012103470832A CN201210347083A CN102839017A CN 102839017 A CN102839017 A CN 102839017A CN 2012103470832 A CN2012103470832 A CN 2012103470832A CN 201210347083 A CN201210347083 A CN 201210347083A CN 102839017 A CN102839017 A CN 102839017A
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Abstract
The invention relates to method for improving 60 DEG C dynamic viscosity of pavement petroleum asphalt, which comprises the steps that atmospheric or vacuum residual oil serves as a raw material, is heated by a heating furnace, enters an asphalt tackifying reactor to be subjected to tackifying reaction, and then enters an atmospheric flash tower for separating out light gas oil; and oil at the bottom of the tower enters a vacuum heating furnace for heating, then enters a vacuum tower to be decompressed and fractionated. The vacuum residual oil at the bottom of the tower is the pavement petroleum asphalt product of which the viscosity is improved. Compared with the asphalt prepared by the same raw material and with a distillation method, the 60 DEG C dynamic viscosity of the pavement petroleum asphalt product prepared by the method with the same mark (the same needle penetration) is improved, so that the high-temperature property of the asphalt is improved.
Description
Technical field
The invention belongs to the petrochemical technology field, relate to a kind of method that improves 60 ℃ of kinetic viscosities of oil road bitumen.
Background technology
Along with expanding economy, large-scale heavy duty car amount is more and more, and the high temperature stability performance difference on petroleum pitch road surface is the important factor that highway pavement wrecks, and this phenomenon is even more serious in the high temperature area.The intensity of the asphalt of petroleum pitch under kinetic viscosity under 60 ℃ and summer road surface top temperature, anti-pushing with rutting resistance have good dependency; The requirement of reflection pitch use properties; Therefore many countries and regions bi tumenf orr oad has index request to the viscosity under 60 ℃, for example in the technical requirements of the JTG F40-2004 of China The Ministry of Communications bi tumenf orr oad A level pitch is had the index request of 60 ℃ of kinetic viscosities.Traditional oil method for producing road asphalt is normal pressure or distillation under vacuum, and the method that make the good oil road bitumen of high-temperature behavior has: decompression deep drawing method, solvent deasphalting method, oxidation style, polymer modification method etc.
Decompression deep drawing method, high to the requirement of raw oil character, if the improper contradiction that will be directed between pitch penetration degree and the 60 ℃ of kinetic viscosities of raw material promptly meets the requirements of under the situation in pitch penetration degree, the viscosity under its 60 ℃ is less than normal; If the viscosity under 60 ℃ is met the demands, its penetration degree is less than normal.
Granted patent CN 1064987C discloses a kind of high-viscosity asphalt and working method thereof, and this method is a raw material with the vacuum residuum of Oman's crude oil, and gained pitch behind propane deasphalting is produced asphaltum with high viscosity through half oxide treatment again.This kind method complex process, production cost is high.
Granted patent CN1076386C discloses a kind of oxidized bitumen product preparation method of viscosity chassification; This method is to be raw material with normal, vacuum residuum or solvent deoiling pitch etc.; Utilize common intermittence or continuous asphalt oxidizer unit; Under processing condition such as certain temperature, air-blowing quantity and aspect ratio, keep certain oxidization time---the effective residence time of raw material in device, and the product that obtains.The difference of oxidization time will obtain the oxidized bitumen product of the different trades mark.But this kind method receives the restriction of raw oil equally, exists complex process, problem that production cost is high equally.
The polymer modification method can be improved the bituminous high-temperature behavior, promptly can improve the kinetic viscosity under its 60 ℃, is not to be matrix pitch but this kind pitch has been modifying asphalt, also can increase the production cost of petroleum pitch simultaneously.
The method of 60 ℃ of kinetic viscosities of existing raising oil road bitumen; Main existing problems are; Receive the problems such as restriction, complete processing complicacy and production cost height of raw oil, a kind of low-cost method that improves 60 ℃ of kinetic viscosities of oil road bitumen of urgent expectation exploitation.
Summary of the invention
The purpose of this invention is to provide a kind of simple and easy to do, improve the method for 60 ℃ of kinetic viscosities of oil matrix pitch cheaply; Especially to adopt distillation method produce 60 ℃ of kinetic viscosities of oil road bitumen less than normal, do not reach the raw material of A level pitch technical requirements among the JTG F40-2004 of China The Ministry of Communications, a kind of method that improves 60 ℃ of kinetic viscosities of oil matrix pitch is provided.
Theoretical foundation of the present invention is; Low viscosity component in the petroleum pitch is main with the substituent aromatic hydrocarbon of belt length branched paraffin, naphthenic hydrocarbon mainly, if let these long-chain branch alkane substituting groups under the certain temperature and the residence time, and the side chain fracture; Then it is separated; The suitable condensation of colloid simultaneously becomes bituminous matter, promptly increases the part bituminous matter, and low viscosity component content will correspondingly reduce in the pitch of producing like this; Thereby increased high sticking, hard component concentration, reached the purpose that increases oil road bitumen viscosity, improves its high-temperature behavior.
Purpose based on above-mentioned theory and invention; The invention is characterized in: with normal pressure or vacuum residuum is raw material, after the process furnace heating, gets into a pitch viscosity-increasing reactor; Raw material gets into atmospheric flash tower through tackify reaction back and isolates light gas oil; Residual oil entering vacuum distillation tower after the heating of decompression process furnace carries out vacuum fractionation at the bottom of the flashing tower, according to the bituminous trade mark, confirms the cutting scheme of reduced pressure distillate; Obtain vacuum residuum at the bottom of the different towers, be the oil road bitumen product that the viscosity of the different trades mark increases.
Raw material of the present invention does not satisfy the normal pressure or the vacuum residuum of the index request of 60 ℃ of kinetic viscosities of A level pitch in the technical requirements of the JTG F40-2004 of The Ministry of Communications bi tumenf orr oad for the normal pressure or the vacuum residuum of naphthenic base, intermediate base or the cycloalkanes-intermediate base of low wax, the pitch that preferably adopts distillation method to produce.
Described pitch tackify temperature of reaction is 360-410 ℃, and the reaction times is 40-200 minutes.
With identical pitch raw materials for production, the bi tumenf orr oad product that adopts this method to produce is compared with distillation method, and 60 ℃ of kinetic viscosities of the identical trade mark (same needle in-degree) bituminous increase, and the bituminous high-temperature behavior is improved.
Description of drawings
Fig. 1 increases the process flow sheet of 60 ℃ of kinetic viscosities of matrix pitch,
Wherein: 1, raw oil; 2, asphalt viscosity increases reaction heating furnace; 3, asphalt viscosity increases reactor drum; 4, atmospheric flash tower; 5, light gas oil; 6, decompression process furnace; 7, vacuum distillation tower; 8, subtract top oil; 9, vacuum gas oil; 10, high viscosity oil road bitumen.
Embodiment:
Shown in accompanying drawing; Raw material 1 is delivered to asphalt viscosity increase reaction heating furnace 2 through pipeline with pump and is heated to 360-410 ℃; Get into asphalt viscosity increase reactor drum 3 and react, reaction product is delivered to atmospheric flash tower 4 through pipeline with pump, isolates light gas oil 5; Oil is delivered to vacuum furnace 6 back of heating through pipeline with pump and is got into vacuum distillation tower 7 at the bottom of the flashing tower; In vacuum distillation tower, isolate according to oil product boiling point difference and to subtract top oil 8, vacuum gas oil 9, at the bottom of the tower high viscosity oil road bitumen 9 that needs.
A kind of low coagulate that naphthenic base crude and a kind of viscous crude (mass mixing ratio position 3:1) pass through that underpressure distillation obtains 90
#, 70
#60 ℃ of kinetic viscosities of bituminous are 127 respectively, 166pa.s; Vacuum residuum with this commingled crude is raw material, respectively the 365 ℃/residence time be 180 minutes, the 395 ℃/residence time be reaction product under 60 minutes the condition obtain after through flash distillation and vacuum fractionation 90
#, 70
#60 ℃ of kinetic viscosities of bituminous are increased to 163 respectively, 188pa.s.
A kind of cycloalkanes-intermediate base crude oil through underpressure distillation obtain 90
#60 ℃ of kinetic viscosities of bituminous are 97pa.s; Long residuum with this crude oil is a raw material; Be that 160 minutes, the 400 ℃/residence time are 100 minutes the 370 ℃/residence time respectively, the 410 ℃/residence time be reaction product under 60 minutes the condition obtain after through normal pressure fractionation and vacuum fractionation 90
#60 ℃ of kinetic viscosities of bituminous are increased to 155,166 respectively, 161pa.s.
Embodiment 3
Another kind of cycloalkanes-intermediate base crude oil through underpressure distillation obtain 90
#60 ℃ of kinetic viscosities of bituminous are 130pa.s; Long residuum with this crude oil is a raw material; Be that 200 minutes, the 385 ℃/residence time are 70 minutes the 360 ℃/residence time respectively, the 410 ℃/residence time be reaction product under 40 minutes the condition obtain after through atmospheric flashing and vacuum fractionation 90
#60 ℃ of kinetic viscosities of bituminous are increased to 161,159 respectively, 168pa.s.
Embodiment 3
Claims (3)
1. method that improves 60 ℃ of kinetic viscosities of oil road bitumen; It is characterized in that: with normal pressure or vacuum residuum is raw material, after the process furnace heating, gets into a pitch viscosity-increasing reactor; Raw material gets into atmospheric flash tower through tackify reaction back and isolates light gas oil; Oil gets into decompression process furnace heating back and gets into vacuum distillation tower at the bottom of the tower, carries out vacuum fractionation, and vacuum residuum is the oil road bitumen product that viscosity increases at the bottom of the tower.
2. the method for 60 ℃ of kinetic viscosities of raising oil road bitumen as claimed in claim 1; It is characterized in that: wherein raw material is the normal pressure or the vacuum residuum of naphthenic base, intermediate base or the cycloalkanes-intermediate base of low wax, or does not satisfy the normal pressure or the vacuum residuum of the index request of 60 ℃ of kinetic viscosities of A level pitch in the technical requirements of the JTG F40-2004 of The Ministry of Communications bi tumenf orr oad with the pitch that distillation method is produced.
3. the method for 60 ℃ of kinetic viscosities of raising oil road bitumen as claimed in claim 1, it is characterized in that: wherein the temperature of reaction of raw material in the pitch viscosity-increasing reactor is 360～410 ℃, the reaction times is 40～200 minutes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210347083.2A CN102839017B (en) | 2012-09-18 | 2012-09-18 | Method for improving 60 DEG C dynamic viscosity of pavement petroleum asphalt |
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| CN201210347083.2A CN102839017B (en) | 2012-09-18 | 2012-09-18 | Method for improving 60 DEG C dynamic viscosity of pavement petroleum asphalt |
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| CN102839017A true CN102839017A (en) | 2012-12-26 |
| CN102839017B CN102839017B (en) | 2015-05-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980493A (en) * | 2019-12-16 | 2021-06-18 | 中国石油天然气股份有限公司 | Matrix asphalt for waterproof coiled material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4871444A (en) * | 1987-12-02 | 1989-10-03 | Mobil Oil Corporation | Distillate fuel quality of FCC cycle oils |
| CN1072442A (en) * | 1987-06-18 | 1993-05-26 | 丸善石油化学株式会社 | Preparation bituminous method |
| CN101676365A (en) * | 2008-09-18 | 2010-03-24 | 中国石油天然气股份有限公司 | Method for directly producing road asphalt by mild cracking super-heavy crude oil |
-
2012
- 2012-09-18 CN CN201210347083.2A patent/CN102839017B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072442A (en) * | 1987-06-18 | 1993-05-26 | 丸善石油化学株式会社 | Preparation bituminous method |
| US4871444A (en) * | 1987-12-02 | 1989-10-03 | Mobil Oil Corporation | Distillate fuel quality of FCC cycle oils |
| CN101676365A (en) * | 2008-09-18 | 2010-03-24 | 中国石油天然气股份有限公司 | Method for directly producing road asphalt by mild cracking super-heavy crude oil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112980493A (en) * | 2019-12-16 | 2021-06-18 | 中国石油天然气股份有限公司 | Matrix asphalt for waterproof coiled material and preparation method thereof |
| CN112980493B (en) * | 2019-12-16 | 2023-04-07 | 中国石油天然气股份有限公司 | Matrix asphalt for waterproof coiled material and preparation method thereof |
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| CN102839017B (en) | 2015-05-13 |
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