CN104073003A - Road asphalt modifier and preparation method thereof - Google Patents
Road asphalt modifier and preparation method thereof Download PDFInfo
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- CN104073003A CN104073003A CN201410279184.XA CN201410279184A CN104073003A CN 104073003 A CN104073003 A CN 104073003A CN 201410279184 A CN201410279184 A CN 201410279184A CN 104073003 A CN104073003 A CN 104073003A
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Abstract
The invention discloses a road asphalt modifier and a preparation method thereof. The preparation method comprises the following steps: mixing coal, scrap tire slices and catalytic cracking oil slurry according to a mass ratio of 0.5-5:0.5-5:1, adding a coal hydrogenation liquefaction catalyst which accounts for 0.02-4 percent of the total mass of coal based on the metal elements, and reacting at the temperature of 350-450 DEG C for 1-6 hours to obtain the road asphalt modifier as well as byproducts such as light oil and hydrocarbon-rich gases. The road asphalt modifier is equivalent to TLA in modification effect, the America material measurement association standard (ASTMD5710) is reached, and the pavement performance of matrix asphalt can be obviously improved.
Description
Technical field
The invention belongs to road bitumen technical field, relate to and a kind ofly for being added on road bitumen, road bitumen is carried out to the road asphalt modifier of modification, and the preparation method of this properties-correcting agent.
Background technology
China's transport development is flourish, and high-grade highway is used the quantity required of material to grow with each passing day.Pitch occupies very important status in road construction, has the irreplaceable advantage in concrete road surface, the most bituminous pavements that adopt of countries in the world high grade pavement.For preventing distortion under bituminous pavement high temperature and the phenomenon of rupture under low temperature, requiring pitch at high temperature to have under enough intensity and thermostability, low temperature has enough elasticity and plasticity.
The matrix pitch of China's domestic production, owing to being subject to the restriction of oil property, is difficult to possess above-mentioned two specific characters simultaneously, meets the construction requirements of high-grade highway, so the pavement performance that uses properties-correcting agent to improve pitch just becomes the important method that solves asphalt quality problem.The rock asphalt (TLA) that originates in South America Trinidad lake is the road asphalt modifier generally using at present, can solve preferably distortion under single bituminous pavement high temperature and the phenomenon of rupture under low temperature.But TLA is expensive, originate limited, in the use of China, be restricted.
The current domestic substitute products that also have TLA properties-correcting agent, but mostly just play merely modifying function, on composition, also have very large difference with TLA.ZL 200810222273.5 discloses a kind of road asphalt modifier, is coal is reacted and obtained under catalyzer and inert gas pressure with catalytically cracked oil.This properties-correcting agent need to be prepared under inert gas environment, and processing condition are complicated, and production cost is high.
Summary of the invention
The object of this invention is to provide that a kind of preparation technology is simple, modified effect good, production cost is low, be beneficial to road asphalt modifier of environmental protection and preparation method thereof.
The preparation method of road asphalt modifier provided by the invention mixes with catalytically cracked oil coal, junked tire section according to the mass ratio of 0.5～5 ﹕ 0.5～5 ﹕ 1, add the Coal Liquefaction catalyzer that accounts for coal total mass 0.02～4% in metallic element, in 350～450 ℃ of reactions 1～6 hour, obtain road asphalt modifier, simultaneously by-product light oil and rich appropriate hydrocarbon gas.
Coal Liquefaction catalyzer of the present invention is ferrous sulfate, amine molybdate, pyrite or moly-sulfide, can promote hydrogen molecule to shift in solvent, thereby realizes solvent to hydrogen supply in coal, reaches the effect of Coal Liquefaction.
Described junked tire section is junked tire tread-rubber part clean, slicing treatment.In properties-correcting agent, add junked tire, on the one hand can be by whole tire reclaim utilization, on the other hand, the introducing of rubber constituent can improve the colloidal structure of pitch, effectively improves its pavement performance.
Described catalytically cracked oil is crude oil through distillable petroleum naphtha again after catalytic cracking, resultingly except gasoline, diesel oil and heavy oil, throws away slurry oil.
The road asphalt modifier of the above-mentioned preparation of the present invention is solid-state, and the tetrahydrofuran (THF) solvend in its moiety is 65～80%, and toluene solvend is 20%～40%, and residue is 20%～35%.Properties-correcting agent is carried out to traditional performance test, and penetration degree is 3～50 (0.1mm), 60～120 ℃ of softening temperatures.
The road asphalt modifier of the above-mentioned preparation of the present invention is used for being added into matrix pitch, to improve the pavement performance of matrix pitch.
The using method of road asphalt modifier of the present invention is that described properties-correcting agent is crushed to below 5 microns, at 130～210 ℃ of temperature, mixes with matrix pitch, and wherein said road asphalt modifier accounts for 5～40% of mix asphalt gross weight.
The preparation method of road asphalt modifier of the present invention and prepared road asphalt modifier have following technique effect.
1. rock asphalt (TLA) modified effect in road asphalt modifier of the present invention and Trinidad lake is suitable, reach U.S. material and measure association (American Society for Testing Materials) standard (ASTM D5710), modified effect is good.
2. the preparation method of road asphalt modifier of the present invention is simple, productive rate is high, be generally 65～90% of total feed weight (coal, junked tire section and catalytically cracked oil gross weight), also have the by product light-end products of certain yield and the rich appropriate hydrocarbon gas of 5% left and right simultaneously.
3. one of raw material that preparation road asphalt modifier of the present invention is used is junked tire, and the recycling that both can improve resource, can improve pavement quality again, and is conducive to reduce black pollution, aspect environment protection, plays a positive role.
4. one of raw material that preparation road asphalt modifier of the present invention is used is catalytically cracked oil (claiming again extract oil out or throw away oil), it is the byproduct of heavy oil catalytically cracking equipment, main as fuel at present, not only reduced its value, and remain in catalyzer in slurry oil and also can cause burner abrasion and coking, the present invention has improved the utility value of catalytically cracked oil greatly.
Embodiment
Embodiment 1
Get 25 mass parts and be crushed to Yanzhou coal, 25 section of mass parts automobile waste old tire and the 50 mass parts catalytically cracked oils (production of Hebei province's refinery) that are less than 0.2mm, add in 1L reactor, the molybdenum sulfide catalyst that simultaneously adds 0.005 mass parts, be warming up to 400 ℃, react 2 hours, after having reacted, open reactor top valve, slowly release gaseous by-product, by solution, absorb poisonous and harmful element as H
2after S, all the other rich appropriate hydrocarbon gas are collected and are utilized, and light oil is through distillating method separated and collected, finally collect still at the bottom of heavy residue be road asphalt modifier.The total mass that obtains all products of take is 100%, and wherein asphalt modifier 80%, light oil and rich appropriate hydrocarbon gas 18.3%, water 1.7%.
By the pulverizing of milling of the road asphalt modifier low temperature of above-mentioned preparation, be screened to below 5 microns, get the properties-correcting agent of 40 mass parts, mix at 180 ℃ with the 90# petroleum pitch of 60 mass parts, make modified pavement asphalt, testing performance index the results are shown in Table 1.
Embodiment 2
Get 40 mass parts and be crushed to Shaanxi shenfu coal, 40 section of mass parts automobile waste old tire and the 20 mass parts catalytically cracked oils that are less than 0.2mm, add in 1L reactor, the ferrous sulfate catalyst that simultaneously adds 0.4 mass parts, be warming up to 425 ℃ of reactions 5 hours, after having reacted, open reactor top valve, slowly release gaseous by-product, by solution, absorb poisonous and harmful element as H
2after S, all the other rich appropriate hydrocarbon gas are collected and are utilized, and light oil is through distillating method separated and collected, finally collect still at the bottom of heavy residue be road asphalt modifier.The total mass that obtains all products of take is 100%, and wherein asphalt modifier 82.1%, light oil and rich appropriate hydrocarbon gas 15.8%, water 2.1%.
By the pulverizing of milling of the road asphalt modifier low temperature of above-mentioned preparation, be screened to below 5 microns, get the properties-correcting agent of 30 mass parts, mix at 200 ℃ with the 90# petroleum pitch of 70 mass parts, make modified pavement asphalt, testing performance index the results are shown in Table 1.
Embodiment 3
Get 42.9 mass parts and be crushed to Fenxi, Shanxi coal, 42.9 section of mass parts automobile waste old tire and the 14.2 mass parts catalytically cracked oils that are less than 0.2mm, add in 1L reactor, add 0.858 mass parts superfine iron oxide catalyzer simultaneously, be warming up to 400 ℃, react 4 hours, after having reacted, open reactor top valve, slowly release gaseous by-product, by solution, absorb poisonous and harmful element as H
2after S, all the other rich appropriate hydrocarbon gas are collected and are utilized, and light oil is through distillating method separated and collected, finally collect still at the bottom of heavy residue be road asphalt modifier.The total mass that obtains all products of take is 100%, and wherein asphalt modifier 78.1%, light oil and rich appropriate hydrocarbon gas 19.4%, water 2.5%.
By the pulverizing of milling of the road asphalt modifier low temperature of above-mentioned preparation, be screened to below 5 microns, get the properties-correcting agent of 20 mass parts, mix at 190 ℃ with the 90# petroleum pitch of 80 mass parts, make modified pavement asphalt, testing performance index the results are shown in Table 1 and table 2.
Embodiment 4
Get 44.4 mass parts and be crushed to Heilungkiang Yilan coal, 44.4 section of mass parts automobile waste old tire and the 11.2 mass parts catalytically cracked oils that are less than 0.2mm, add in 1L reactor, add 1.332 mass parts pyrite catalyst simultaneously, be warming up to 375 ℃ of reactions 1 hour, after having reacted, open reactor top valve, slowly release gaseous by-product, by solution, absorb poisonous and harmful element as H
2after S, all the other rich appropriate hydrocarbon gas are collected and are utilized, and light oil is through distillating method separated and collected, finally collect still at the bottom of heavy residue be road asphalt modifier.The total mass that obtains all products of take is 100%, and wherein asphalt modifier 74.2%, light oil and rich appropriate hydrocarbon gas 22.6%, water 3.2%.
By the pulverizing of milling of the road asphalt modifier low temperature of above-mentioned preparation, be screened to below 5 microns, get the properties-correcting agent of 10 mass parts, mix at 180 ℃ with the 90# petroleum pitch of 90 mass parts, make modified pavement asphalt, testing performance index the results are shown in Table 1.
Embodiment 5
Get 45.4 mass parts and be crushed to Xianfeng In Yunnan coal, 45.4 section of mass parts automobile waste old tire and the 9.2 mass parts catalytically cracked oils that are less than 0.2mm, add in 1L reactor, add 1.816 mass parts pyrite catalyst simultaneously, be warming up to 350 ℃ of reactions 2 hours, after having reacted, open reactor top valve, slowly release gaseous by-product, by solution, absorb poisonous and harmful element as H
2after S, all the other rich appropriate hydrocarbon gas are collected and are utilized, and light oil is through distillating method separated and collected, finally collect still at the bottom of heavy residue be road asphalt modifier.The total mass that obtains all products of take is 100%, and wherein asphalt modifier 79.1%, light oil and rich appropriate hydrocarbon gas 18.6%, water 2.3%.
By the pulverizing of milling of the road asphalt modifier low temperature of above-mentioned preparation, be screened to below 5 microns, get the properties-correcting agent of 5 mass parts, mix at 170 ℃ with the 90# petroleum pitch of 95 mass parts, make modified pavement asphalt, testing performance index the results are shown in Table 1 and table 2.
Comparative example 1
At 180 ℃, 10 mass parts are crushed to 5 microns of following TLA and mix with the 90# petroleum pitch of 90 mass parts, make modified pavement asphalt.
Comparative example 2
At 180 ℃, 20 mass parts are crushed to 5 microns of following TLA and mix with the 90# petroleum pitch of 80 mass parts, make modified pavement asphalt.
Comparative example 3
At 180 ℃, 30 mass parts are crushed to 5 microns of following TLA and mix with the 90# petroleum pitch of 70 mass parts, make modified pavement asphalt.
Comparative example 4
At 180 ℃, 40 mass parts are crushed to 5 microns of following TLA and mix with the 90# petroleum pitch of 60 mass parts, make modified pavement asphalt.
As can be seen from Table 1, the modified effect of road asphalt modifier of the present invention and Trinidada lake pitch is suitable.
Note: standard 1 and standard 2:ASTM standard.
Claims (4)
1. the preparation method of a road asphalt modifier, that coal, junked tire section are mixed according to the mass ratio of 0.5～5 ﹕ 0.5～5 ﹕ 1 with catalytically cracked oil, add the Coal Liquefaction catalyzer that accounts for coal total mass 0.02～4% in metallic element, in 350～450 ℃ of reactions 1～6 hour, obtain road asphalt modifier, simultaneously by-product light oil and rich appropriate hydrocarbon gas.
2. the preparation method of road asphalt modifier according to claim 1, is characterized in that described Coal Liquefaction catalyzer is ferrous sulfate, amine molybdate, pyrite or moly-sulfide.
3. the road asphalt modifier of preparing with method described in claim 1 or 2.
4. the using method of road asphalt modifier described in claim 3, is that properties-correcting agent is crushed to below 5 microns, at 130～210 ℃ of temperature, mixes with matrix pitch, and wherein said road asphalt modifier accounts for 5～40% of mix asphalt gross weight.
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| CN201410279184.XA CN104073003A (en) | 2014-06-21 | 2014-06-21 | Road asphalt modifier and preparation method thereof |
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| CN201410279184.XA CN104073003A (en) | 2014-06-21 | 2014-06-21 | Road asphalt modifier and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788974A (en) * | 2015-04-20 | 2015-07-22 | 太原科技大学 | Road asphalt modifier and preparation method thereof |
| CN108203588A (en) * | 2018-01-30 | 2018-06-26 | 中国石油大学(华东) | A kind of method of nitrogen atmosphere low temperature pyrogenation processing damaged tire |
| 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 |
| CN113773659A (en) * | 2021-09-18 | 2021-12-10 | 中国石油天然气股份有限公司 | Environment-friendly waterproof asphalt and preparation method thereof |
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2014
- 2014-06-21 CN CN201410279184.XA patent/CN104073003A/en active Pending
Patent Citations (5)
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| JP2003012931A (en) * | 2001-07-04 | 2003-01-15 | Nippon Oil Corp | Binder composition for asphalt pavement and its manufacturing method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104788974A (en) * | 2015-04-20 | 2015-07-22 | 太原科技大学 | Road asphalt modifier and preparation method thereof |
| CN108203588A (en) * | 2018-01-30 | 2018-06-26 | 中国石油大学(华东) | A kind of method of nitrogen atmosphere low temperature pyrogenation processing damaged tire |
| 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 |
| CN113773659A (en) * | 2021-09-18 | 2021-12-10 | 中国石油天然气股份有限公司 | Environment-friendly waterproof asphalt and preparation method thereof |
| CN113773659B (en) * | 2021-09-18 | 2022-07-01 | 中国石油天然气股份有限公司 | Environment-friendly waterproof asphalt and preparation method thereof |
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