CN102924935B - Method used for modifying low-temperature coal tar asphalt into paving asphalt - Google Patents
Method used for modifying low-temperature coal tar asphalt into paving asphalt Download PDFInfo
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- CN102924935B CN102924935B CN201210439201.2A CN201210439201A CN102924935B CN 102924935 B CN102924935 B CN 102924935B CN 201210439201 A CN201210439201 A CN 201210439201A CN 102924935 B CN102924935 B CN 102924935B
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Abstract
The invention relates to a method used for modifying low-temperature coal tar asphalt into paving asphalt. Naphthalene in asphalt is easy to separate out at low temperature, so that the asphalt loses plasticity, and a pavement is prone to cause cracks in winter. According to the method used for modifying the low-temperature coal tar asphalt into the paving asphalt, the low-temperature coal tar asphalt is heated and then added with raw materials A, B and C, and the paving asphalt is obtained after mixing, reaction and cooling. Raw materials A comprise coking solvent oil, anthracene oil, styrene butadiene styrene block copolymer, waste rubber powder, regenerated rubber, chloroprene rubber, butadiene styrene rubber, ethylene propylene rubber, polrvinyl chloride and polystyrene. Raw materials B comprise sulphur, thiazoles and octadecanamide class compounds. Raw materials C comprise trimethyl diphenoquinone (TMDQ), isopropyl phenylenediamine (IPPD) and phenyl-alpha-naphthylamine. According to the method used for modifying the low-temperature coal tar asphalt into the paving asphalt, the raw materials A increase the colloid content of the low-temperature coal tar asphalt, improve the elementary composition, chemical constituents and colloid structure of the low-temperature coal tar asphalt, and enable the low-temperature coal tar asphalt to be more similar to petroleum asphalt and suitable for being used in pavement project construction. The raw materials B enable the combination between the raw materials A and low-temperature coal tar until a three-position net-shaped structure is formed. The raw materials C improve the anti-aging performance of the finally obtained paving asphalt.
Description
technical field:
The invention belongs to coalite tar asphalt modification applied technical field, specifically a kind of is the method for road bitumen by coalite tar asphalt modification.
technical background:
Petroleum pitch is used as road bitumen and has very long history, day by day in short supply in recent years along with petroleum resources, the exploitation of coal-tar pitch are taken seriously, coal-tar pitch, full name coal-tar pitch, comprise coal-tar heavy oil pitch, coal-tar middle oil pitch and coalite tar pitch, but current research is all only limitted to coal-tar heavy oil pitch and coal-tar middle oil asphalt modification is road bitumen.More or less all there are some problems in this process.While coal-tar heavy oil asphalt modification is road bitumen, along with generation and the volatilization of hazardous and noxious substances, especially benzo (a) pyrene, therefore be used as road bitumen surfacing and can produce harm to the health of people, although some scholars is attempted to reduce its toxicity, such as, use after coal-tar heavy oil pitch being mixed with petroleum pitch, but poor effect.And coal-tar middle oil pitch is due to its character reason, the modified Paving Asphalt Low Temperature Property obtained does not meet code requirement.Coalite tar pitch from high, coal-tar middle oil asphaltic nature is completely different, because its gum level is less, modification difficulty is increased, and the stability of modified pitch and resistance to deterioration also cannot solve, but coalite tar pitch possesses an advantageous advantage, be exactly that coalite tar bitumen poisoning substances content is little, particularly benzo (a) pyrene content is very low.But the naphthalene content of coalite tar pitch is also an insoluble problem, and for also having carried out large quantifier elimination in the industry, effect is general.Naphthalene is easily separated out during low temperature in pitch, makes pitch lose plasticity, causes road surface easily to produce crack winter, under normal temperature condition naphthalene volatile, distillation, accelerate pitch " aging ", its work-ing life is shortened, is difficult to reach construction requirement.
summary of the invention:
It is the method for road bitumen by coalite tar asphalt modification that the present invention will provide a kind of, to be difficult to for current low temperature coal tar pitch the present situation being modified as road bitumen, and solves shortening in work-ing life, is difficult to the technical problem reaching construction requirement.
Be a method for road bitumen by coalite tar asphalt modification, comprise the steps: successively
Be coalite tar asphalt heating to 120 ~ 200 DEG C of 50 ~ 80 parts by mass fraction, to add mass fraction be successively A raw material, the mass fraction of 40 ~ 70 parts to be the B raw material of 1 ~ 5 part and mass fraction the be C raw material of 1 ~ 5 part, mix at 120 ~ 260 DEG C, through 2 ~ 10 hours, after question response completes, namely standing cooling obtains road bitumen;
Described A raw material is coking solvent oil, carbolineum, SBS(styrene-butadiene-styrene block copolymer), waste Crumb rubber, regenerated rubber, chloroprene rubber, styrene-butadiene rubber(SBR), ethylene-propylene rubber(EPR), polyvinyl chloride and polystyrene one or more;
Described B raw material is one or more of sulphur, thiazoles and stearic amide compounds;
Described C raw material is TMDQ(2.2.4-trimethylammonium-1,2-dihyaroquinoline polymkeric substance), IPPD(N-phenyl-N '-sec.-propyl-Ursol D) and one or more of phenyl-a-naphthylamine.
Described mixing method is that use agitator stirs, uses shears to shear, uses colloidal mill to mix and use one or more of reactor hybrid reaction.
compared with prior art, advantage of the present invention is:
1, the service requirements of desirable road bitumen can be reached: in the present invention, A raw material add the gum level that effectively can increase coalite tar pitch, improve that it is elementary composition, chemical composition and colloidal structure, make it more similar to petroleum pitch and be applicable to road project, can make the adding of B raw material to combine between A raw material and coalite tar tightr, until form three reticulated structures, adding of C raw material makes final road bitumen resistance to deterioration be improved.
2, construct convenient: the coalite tar pitch hazardous and noxious substances content using this law obtained is much smaller than high, coal-tar middle oil pitch, and wherein the content of benzo (a) pyrene can reduce by 50 ~ 70%, complete conformance with standard requirement.Meanwhile, the mix temperature of this pitch is at 70 ~ 90 DEG C, and paving material, at 60 ~ 80 DEG C, rolls temperature at 40 ~ 50 DEG C, not only facilitates construction, and effectively reduces this road bitumen use temperature, reaches energy-saving and emission-reduction, the object of low-carbon environment-friendly.
3, low-carbon environment-friendly: the byproduct that coalite tar distil process produces is used by present method, before solving, it is discarded, the problem such as to deposit, and namely caters to the environmental protection trend of coal chemical industry, creates economic worth again.
embodiment:
below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1
By 550g coalite tar pitch, load in container and be heated to 160 DEG C, make it flow completely, in whipping process, add carbolineum 400g, waste Crumb rubber 44g, sulphur 3g, TMDQ(2.2.4-trimethylammonium-1,2-dihyaroquinoline polymkeric substance) 3g, fully reaction is after 8 hours, leave standstill cooling, obtain road bitumen.
Embodiment 2
By 500g coalite tar pitch, load in container and be heated to 180 DEG C, make it flow completely, in shear history, add coking solvent oil 455g, regenerated rubber 39g, thiazole 4g, TMDQ(2.2.4-trimethylammonium-1,2-dihyaroquinoline polymkeric substance) 2g, fully reaction is after 6 hours, leave standstill cooling, obtain road bitumen.
Embodiment 3
By 600g coalite tar pitch, load in container and be heated to 170 DEG C, make it flow completely, in colloidal mill mixing process, add carbolineum 350g, waste Crumb rubber 44g, sulphur 3g, TMDQ(2.2.4-trimethylammonium-1,2-dihyaroquinoline polymkeric substance) 3g, fully reaction is after 4 hours, leave standstill cooling, obtain road bitumen.
Embodiment 4
By 700g coalite tar pitch, load in reactor and be heated to 140 DEG C, make it flow completely, in whipping process, add carbolineum 280g, SBS(styrene-butadiene-styrene block copolymer) 15g, sulphur 3g, IPPD(N-phenyl-N '-sec.-propyl-Ursol D) 1.5g, TMDQ(2.2.4-trimethylammonium-1,2-dihyaroquinoline polymkeric substance) 0.5g, abundant reaction, after 4 hours, leaves standstill cooling, obtains road bitumen.
Embodiment 5
By 500g coalite tar pitch, load in container and be heated to 180 DEG C, make it flow completely, in shear history, add coking solvent oil 475g, chloroprene rubber 20g, thiazole 3g, TMDQ(2.2.4-trimethylammonium-1,2-dihyaroquinoline polymkeric substance) 2g, fully reaction is after 6 hours (temperature of reaction is 200 DEG C), leave standstill cooling, obtain road bitumen.
Embodiment 6
By 500g coalite tar pitch, load in container and be heated to 180 DEG C, make it flow completely, in shear history, add coking solvent oil 465g, polyvinyl chloride 30g, thiazole 3g, TMDQ(2.2.4-trimethylammonium-1,2-dihyaroquinoline polymkeric substance) 2g, fully reaction is after 6 hours (temperature of reaction is 240 DEG C), leave standstill cooling, obtain road bitumen.
Embodiment 7
By 500g coalite tar pitch, load in container and be heated to 190 DEG C, make it flow completely, in colloidal mill process of lapping, add carbolineum 405g, styrene-butadiene rubber(SBR) 30g, ethylene-propylene rubber(EPR) 30g, polystyrene 30g successively, thiazole 3g, TMDQ(2.2.4-trimethylammonium-1,2-dihyaroquinoline polymkeric substance) 2g, fully reaction is after 9 hours (temperature of reaction is 240 DEG C), leave standstill cooling, obtain road bitumen.
Embodiment 8
By 500g coalite tar pitch, load in container and be heated to 200 DEG C, make it flow completely, put into reactor, add coking solvent oil 375g, chloroprene rubber 30g, regenerated rubber 60g, polystyrene 30g successively, thiazole 1.5g, stearic amide 1.5g, TMDQ(2.2.4-trimethylammonium-1,2-dihyaroquinoline polymkeric substance) 1.5g, phenyl-a-naphthylamine 0.5g, fully reaction is after 9 hours (temperature of reaction is 240 DEG C), leave standstill cooling, obtain road bitumen.
The modified road bitumen performance index obtained of table 1
Claims (2)
1. be a method for road bitumen by coalite tar asphalt modification, it is characterized in that:
Comprise the steps: successively
By 600g coalite tar pitch, load in container and be heated to 170 DEG C, make it flow completely, in colloidal mill mixing process, add carbolineum 350g, waste Crumb rubber 44g, sulphur 3g, TMDQ(2,2,4-trimethylammonium-1,2-dihyaroquinoline polymkeric substance) 3g, fully reaction is after 4 hours, leave standstill cooling, obtain road bitumen.
2. according to claim 1 described a kind of be the method for road bitumen by coalite tar asphalt modification, it is characterized in that:
Described mixing method is that use agitator stirs, uses shears to shear, uses colloidal mill to mix and use one or more of reactor hybrid reaction.
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| CN201210439201.2A CN102924935B (en) | 2012-11-07 | 2012-11-07 | Method used for modifying low-temperature coal tar asphalt into paving asphalt |
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| CN103834422B (en) * | 2014-03-24 | 2015-04-01 | 武汉科技大学 | Modified coal tar and preparation method thereof |
| CN103881745B (en) * | 2014-04-01 | 2016-02-10 | 中交瑞通路桥养护科技有限公司 | Advanced road making coal pitch material and preparation method thereof |
| CN105907112B (en) * | 2016-05-12 | 2018-01-09 | 湘潭大学 | A kind of road sealing material of high resiliency and anti-high and low-temp performance and preparation method thereof |
| CN108070265A (en) * | 2016-11-09 | 2018-05-25 | 中国石油化工股份有限公司 | A kind of preparation method of modifying agent mother liquor and road asphalt |
| CN108059837A (en) * | 2016-11-09 | 2018-05-22 | 中国石油化工股份有限公司 | A kind of modifying agent mother liquor and road asphalt and preparation method thereof |
| CN110437632B (en) * | 2018-05-04 | 2021-05-04 | 中国石油化工股份有限公司 | Modifier mother liquor and road asphalt and preparation method thereof |
| CN110437628B (en) * | 2018-05-04 | 2021-05-04 | 中国石油化工股份有限公司 | Modifier mother liquor, road asphalt and synthesis method thereof |
| CN110437631A (en) * | 2018-05-04 | 2019-11-12 | 中国石油化工股份有限公司 | A kind of modifying agent mother liquor, road asphalt and its preparation method |
| CN110437627B (en) * | 2018-05-04 | 2021-05-04 | 中国石油化工股份有限公司 | Modifier mother liquor, road asphalt and preparation method thereof |
| CN112920613A (en) * | 2021-01-27 | 2021-06-08 | 广西京帅防水科技有限公司 | Modified asphalt waterproofing membrane anti-aging agent and preparation facilities thereof |
| CN115677267B (en) * | 2021-07-27 | 2023-10-10 | 中国石油化工股份有限公司 | Anti-falling agent, anti-falling bird repellent asphalt mixture and preparation method thereof |
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