CN103773011A - Asphalt regenerant and preparation method thereof - Google Patents
Asphalt regenerant and preparation method thereof Download PDFInfo
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- CN103773011A CN103773011A CN201210411170.XA CN201210411170A CN103773011A CN 103773011 A CN103773011 A CN 103773011A CN 201210411170 A CN201210411170 A CN 201210411170A CN 103773011 A CN103773011 A CN 103773011A
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- bitumen regenerant
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Abstract
The invention discloses an asphalt regenerant and a preparation method thereof. The asphalt regenerant comprises the following components in percentage by weight: 30wt%-50wt% of heavy oil, 40wt%-65wt% of catalytic cracking slurry, 1wt%-5wt% of polymer and 1wt%-5wt% of modifier. The preparation method comprises the following steps: adding the catalytic cracking slurry to the heavy oil at the temperature of 130-150 DEG C, stirring for 0.5-1h at a low speed, adding the polymer and the modifier, shearing for 0.5-1h at a high speed, and cooling to room temperature so as to obtain the asphalt regenerant. The asphalt regenerant disclosed by the invention can obviously improve the performances of asphalt at high temperature and low temperature, and the preparation method is simple and low in cost.
Description
Technical field
The present invention relates to a kind of bitumen regenerant and preparation method thereof.
Background technology
In 50 years, countries in the world infrastructure construction particularly Road construction has all obtained beyond example development in the past.And this wherein quite a few bituminous pavement approach or reached life, need to increase maintenance drop into, to maintain the due traffic capacity of these roads and security.In addition, in the reparation of Jiu road or process of reconstruction, will produce a large amount of waste and old ground surface materials, and then cause three large problems: the one, stack place; The 2nd, contaminate environment; The 3rd, waste a large amount of Nonrenewable resources.Therefore, waste asphalt pavement regeneration is day by day urgent.Asphalt-regenerating is exactly in aging pitch, to add regenerator to recover the process of its pavement performance, and the key of this technology is to develop suitable regenerator, to recover every use properties of waste asphalt.The normally lightweight oil of waste asphalt reclaiming agent that China was used at the beginning of the eighties in last century, as lubricating oil, diesel oil, machine oil or their mixture.Because lightweight oil divides highly volatile, less stable regeneration effect is unsatisfactory.
Document (Jiangsu transport science and techonologies, 2001, Vol.5:8-10) utilizes 1,3-butadiene and acrylate for the synthetic tackifying resin of raw material is as bitumen regenerant.Play the adding of tackifying resin the effect of fixing lightweight oil content, make lightweight oil content miscible with it and form stable macromolecular solution with aged asphalt agglutinate, overcome the volatile shortcoming of light oil.But the special equipment and technology of synthetic needs of tackifying resin, cost is higher, has limited the commercial applications of its mass-producing.
US5578663 discloses one and has comprised elastomeric asphalt pavement regeneration agent and preparation method.But the preparation method of this patent regenerator need to add the aromatic solvent of 20wt-30wt%, because the arene compounds boiling point adding is low, in use there is safety problem, environment and people's health is all had to detrimentally affect.
CN101255245A discloses a kind of road bitumen regenerative agent, main devulcanized rubber powder, the heavy mineral oil of 0wt%～50wt% and the vulcanization of rubber component of 0wt%～10wt% take 50wt%～100wt%, as raw material, make at 30～200 ℃ of mix and blends for 0.5～3 hour.The problem that has solved the bituminous matter dispersion segregation of high-content in rubber powder and aged asphalt and its road performance is declined.In this technique, the preparation of related devulcanized rubber powder needs special equipment, and rubber powder swelling time is long, is unfavorable for large-scale production.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of bitumen regenerant and preparation method thereof.Bitumen regenerant of the present invention can obviously improve asphalt high-temperature and low-temperature performance, and preparation method is simple, and cost is low.
A kind of bitumen regenerant, comprises by weight percentage:
(1) heavy oil 30wt%-50wt%
(2) catalytically cracked oil 40wt%-65wt%
(3) polymkeric substance 1wt%-5wt%
(4) properties-correcting agent 1wt%-5wt%.
In heavy oil, can be wherein long residuum, vacuum residuum or both mixtures, in heavy oil, saturated sub-prime amount content be 15%-25%.
Wherein in catalytically cracked oil, fragrance point mass content is 50%-60%.
Wherein polymkeric substance is one or more the mixture in styrene-butadiene rubber(SBR) (SBR), natural rubber (NR), chloroprene rubber (CR), divinyl rubber (BR) or ethylene-propylene rubber(EPR) (EPDM).
Wherein properties-correcting agent is one or more in ortho-phosphoric acid, Tripyrophosphoric acid, polyphosphoric acid or polyphosphoric acid amine.
In bitumen regenerant of the present invention, can also add other additive according to the requirement of application, as additives such as antiaging agent, stablizer, antistripping agents.
The preparation method of a kind of bitumen regenerant of the present invention is as follows: catalytically cracked oil is joined in 130-150 ℃ of heavy oil, stirring at low speed 0.5-1 hour, then add polymkeric substance and properties-correcting agent, high speed shear 0.5-1 hour, be cooled to room temperature, obtain waste asphalt reclaiming agent.
The rotating speed of the stirring at low speed described in the inventive method is below 1200 revs/min, and the rotating speed of high speed shear is 3000 ~ 4000 revs/min.Wherein shearing the equipment using is shears or colloidal mill etc.
Bitumen regenerant of the present invention both can be mixed and made into regeneration asphalt with the road bitumen heating of reclaiming, also can be directly and other road bitumen be mixed and made into modifying asphalt.
Compared with prior art, the invention has the advantages that:
In regenerator of the present invention heavy oil and catalytically cracked oil add the compatibleness that can improve between aged asphalt four components, recover its colloidal structure.Add after rubber polymer, can improve the ductility of pitch, thereby obviously improve pitch crack resistance at low-temperature.The properties-correcting agent adopting, as polyphosphoric acid, by changing the structure type of pitch, thereby improves the high-temperature behavior of pitch significantly.The cost of bitumen regenerant of the present invention is low, and preparation technology is simple, and waste material is reused, and reduces the pollution to environment.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but therefore do not limit the present invention.
Embodiment 1
First catalytically cracked oil (fragrance is divided into 52%) is joined in 135 ℃ of vacuum residuum (saturated be divided into 18%), stirring at low speed 0.5 hour, then adds styrene-butadiene rubber(SBR) (SBR) and polyphosphoric acid (purity 84%), high speed shear 0.5 hour, be cooled to normal temperature, obtain bitumen regenerant.Wherein each component concentration is by weight percentage: vacuum residuum 35%, catalytically cracked oil 60%, SBR3%, polyphosphoric acid 2%.
By weight percentage the AH-70 aged asphalt of 15% bitumen regenerant and 85% is stirred and within 1 hour, obtains regeneration asphalt at 150 ℃.Aged asphalt and regeneration asphalt index are in table 1.
Table 1 aged asphalt and regeneration asphalt index.
| Project | Aged asphalt | Regeneration asphalt |
| Penetration degree (25 ℃)/0.1mm | 38 | 70 |
| Ductility (10 ℃)/cm | 10 | 120 |
| Softening temperature/℃ | 65 | 47 |
Embodiment 2
First catalytically cracked oil (fragrance is divided into 55%) is joined in 135 ℃ of long residuums (saturated be divided into 25%), stirring at low speed 0.5 hour, then adds chloroprene rubber (CR) and polyphosphoric acid (purity 84%), high speed shear 0.5 hour, be cooled to normal temperature, obtain bitumen regenerant.Wherein each component concentration is by weight percentage: long residuum 40%, catalytically cracked oil 55%, CR2%, polyphosphoric acid 3%.
By weight percentage the AH-70 aged asphalt of 10% bitumen regenerant and 90% is stirred and within 1 hour, obtains regeneration asphalt at 150 ℃.Aged asphalt and regeneration asphalt index are in table 2.
Table 2 aged asphalt and regeneration asphalt index.
| Project | Waste asphalt | Regeneration asphalt |
| Penetration degree (25 ℃)/0.1mm | 43 | 73 |
| Ductility (10 ℃)/cm | 5 | 112 |
| Softening temperature/℃ | 56 | 48 |
Embodiment 3
First catalytically cracked oil (fragrance is divided into 55%) is joined in 145 ℃ of vacuum residuum (saturated be divided into 20%), stirring at low speed 1 hour, then adds styrene-butadiene rubber(SBR) (SBR) and Tripyrophosphoric acid (purity 84%), high speed shear 1 hour, be cooled to normal temperature, obtain bitumen regenerant.Wherein each component concentration is by weight percentage: vacuum residuum 45%, catalytically cracked oil 48%, SBR4%, Tripyrophosphoric acid 4%.
By weight percentage the AH-90 aged asphalt of 15% regenerator and 85% is stirred and within 1 hour, obtains regeneration asphalt at 150 ℃.Aged asphalt and regeneration asphalt index are in table 3.
Table 3 aged asphalt and regeneration asphalt index.
| Project | Aged asphalt | Regeneration asphalt |
| Penetration degree (25 ℃)/0.1mm | 50 | 92 |
| Ductility (10 ℃)/cm | 12 | 130 |
| Softening temperature/℃ | 67 | 50 |
Comparative example 1
According to the method for embodiment 1 and proportioning, do not use polyphosphoric acid, SBR is 5%, aged asphalt and regeneration asphalt index are in table 4.
Table 4 aged asphalt and regeneration asphalt index.
| Project | Aged asphalt | Regeneration asphalt |
| Penetration degree (25 ℃)/0.1mm | 38 | 94 |
| Ductility (10 ℃)/cm | 10 | 135 |
| Softening temperature/℃ | 65 | 42 |
As can be seen from the table, properties-correcting agent (as polyphosphoric acid) and the composite use of rubber type compounds, softening temperature raises, and ductility increases, and makes the pitch after regeneration have good high temperature performance.
Claims (7)
1. a bitumen regenerant, is characterized in that comprising by weight percentage:
(1) heavy oil 30wt%-50wt%
(2) catalytically cracked oil 40wt%-65wt%
(3) polymkeric substance 1wt%-5wt%
(4) properties-correcting agent 1wt%-5wt%.
2. bitumen regenerant according to claim 1, is characterized in that: heavy oil is long residuum, vacuum residuum or both mixtures, and in heavy oil, saturated sub-prime amount content is 15%-25%.
3. bitumen regenerant according to claim 1, is characterized in that: in catalytically cracked oil, fragrance point mass content is 50%-60%.
4. bitumen regenerant according to claim 1, is characterized in that: polymkeric substance is one or more the mixture in styrene-butadiene rubber(SBR), natural rubber, chloroprene rubber, divinyl rubber or ethylene-propylene rubber(EPR).
5. bitumen regenerant according to claim 1, is characterized in that: properties-correcting agent is one or more in ortho-phosphoric acid, Tripyrophosphoric acid, polyphosphoric acid or polyphosphoric acid amine.
6. a preparation method for bitumen regenerant claimed in claim 1, process is as follows: catalytically cracked oil is joined in 130-150 ℃ of heavy oil to stirring at low speed 0.5-1 hour, add again polymkeric substance and properties-correcting agent, high speed shear 0.5-1 hour, is cooled to room temperature, obtains bitumen regenerant.
7. preparation method according to claim 6, is characterized in that: the rotating speed of stirring at low speed is below 1200 revs/min, and the rotating speed of high speed shear is 3000 ~ 4000 revs/min.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147253A (en) * | 2015-04-20 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of regeneration asphalt and preparation method thereof |
| CN107603252A (en) * | 2017-10-24 | 2018-01-19 | 内蒙古综合交通科学研究院有限责任公司 | Cost of New Type Asphalt Pavement regeneration regenerative agent and preparation method thereof |
| CN108059970A (en) * | 2016-11-09 | 2018-05-22 | 中国石油化工股份有限公司 | A kind of Application way of catalytic slurry |
| CN108070266A (en) * | 2016-11-09 | 2018-05-25 | 中国石油化工股份有限公司 | A kind of Modified catalytic slurry oil and its method for preparing road asphalt |
| CN108587204A (en) * | 2018-05-14 | 2018-09-28 | 重庆路维康交通科技有限公司 | A kind of the warm mix regenerative agent and its preparation and application of asphalt |
| CN109486218A (en) * | 2018-10-09 | 2019-03-19 | 中国石油化工股份有限公司 | Agent and preparation method thereof is prolonged in a kind of increasing of low grade road asphalt |
| CN110885564A (en) * | 2019-12-05 | 2020-03-17 | 达州市禾原再生资源有限公司 | Hot-recycling asphalt mixture recycling agent |
| CN114426777A (en) * | 2020-10-10 | 2022-05-03 | 中国石油化工股份有限公司 | Hot-mixed asphalt regenerant and preparation method and application thereof |
| CN114656793A (en) * | 2022-02-28 | 2022-06-24 | 甘肃省交通科学研究院集团有限公司 | PPA (polyphthalamide) -based compounded high-toughness SBS (styrene butadiene styrene) modified asphalt regenerant and preparation method thereof |
| CN115637052A (en) * | 2022-08-16 | 2023-01-24 | 招商局重庆交通科研设计院有限公司 | Warm-mixed regenerant for in-situ heat regeneration and preparation method thereof |
| CN117466563A (en) * | 2023-12-28 | 2024-01-30 | 水润天府新材料有限公司 | Process for producing recyclable asphalt mixture with added waste rubber |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147253B (en) * | 2015-04-20 | 2018-10-12 | 中国石油化工股份有限公司 | A kind of regeneration asphalt and preparation method thereof |
| CN106147253A (en) * | 2015-04-20 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of regeneration asphalt and preparation method thereof |
| CN108070266B (en) * | 2016-11-09 | 2020-03-17 | 中国石油化工股份有限公司 | Modified catalytic slurry oil and method for preparing road asphalt by using same |
| CN108059970A (en) * | 2016-11-09 | 2018-05-22 | 中国石油化工股份有限公司 | A kind of Application way of catalytic slurry |
| CN108070266A (en) * | 2016-11-09 | 2018-05-25 | 中国石油化工股份有限公司 | A kind of Modified catalytic slurry oil and its method for preparing road asphalt |
| CN108059970B (en) * | 2016-11-09 | 2020-03-17 | 中国石油化工股份有限公司 | Method for utilizing catalytic slurry oil |
| CN107603252A (en) * | 2017-10-24 | 2018-01-19 | 内蒙古综合交通科学研究院有限责任公司 | Cost of New Type Asphalt Pavement regeneration regenerative agent and preparation method thereof |
| CN108587204A (en) * | 2018-05-14 | 2018-09-28 | 重庆路维康交通科技有限公司 | A kind of the warm mix regenerative agent and its preparation and application of asphalt |
| CN109486218A (en) * | 2018-10-09 | 2019-03-19 | 中国石油化工股份有限公司 | Agent and preparation method thereof is prolonged in a kind of increasing of low grade road asphalt |
| CN110885564A (en) * | 2019-12-05 | 2020-03-17 | 达州市禾原再生资源有限公司 | Hot-recycling asphalt mixture recycling agent |
| CN114426777A (en) * | 2020-10-10 | 2022-05-03 | 中国石油化工股份有限公司 | Hot-mixed asphalt regenerant and preparation method and application thereof |
| CN114656793A (en) * | 2022-02-28 | 2022-06-24 | 甘肃省交通科学研究院集团有限公司 | PPA (polyphthalamide) -based compounded high-toughness SBS (styrene butadiene styrene) modified asphalt regenerant and preparation method thereof |
| CN115637052A (en) * | 2022-08-16 | 2023-01-24 | 招商局重庆交通科研设计院有限公司 | Warm-mixed regenerant for in-situ heat regeneration and preparation method thereof |
| CN117466563A (en) * | 2023-12-28 | 2024-01-30 | 水润天府新材料有限公司 | Process for producing recyclable asphalt mixture with added waste rubber |
| CN117466563B (en) * | 2023-12-28 | 2024-03-19 | 水润天府新材料有限公司 | Process for producing recyclable asphalt mixture with added waste rubber |
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