CN103102702B - Asphalt composition and preparation method thereof - Google Patents
Asphalt composition and preparation method thereof Download PDFInfo
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- CN103102702B CN103102702B CN201110353552.7A CN201110353552A CN103102702B CN 103102702 B CN103102702 B CN 103102702B CN 201110353552 A CN201110353552 A CN 201110353552A CN 103102702 B CN103102702 B CN 103102702B
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Abstract
The invention discloses an asphalt composition and a preparation method thereof. The asphalt composition comprises matrix asphalt and a flash point modifier, wherein the flash point modifier is a reaction product of grease and a NaOH and/or KOH solution. The matrix asphalt is heated to a temperature 10 to 100 DEG C higher than a melting point thereof, then the flash point modifier is added, and uniform mixing is carried out so as to obtain the asphalt composition. A preparation method for the flash point modifier comprises a step of subjecting grease and the NaOH and/or KOH solution to saponification under heating, wherein the reaction product, without separation, is the flash point modifier. Compared to the prior art, the invention has the following advantage: a flash point of asphalt can be substantially increased through addition of the low cost flash point modifier.
Description
Technical field
The present invention relates to a kind of bituminous composition and preparation method thereof, the particularly bituminous composition significantly improving pitch flash points and preparation method thereof.
Background technology
Flash-point is the sign of bi tumenf orr oad construction safety.Flash-point is higher, then pitch is more nonflammable in construction process, and safety coefficient is higher.In order to ensure the security of constructing, the flash-point of No. 90 bi tumenf orr oads is brought up to 245 DEG C by original 230 DEG C by the Ministry of Communications's standard-" standard specification for construction and acceptance of highway asphalt pavement enforcement manual " (JTG F4-2004), and the flash-point of No. 70 and following trade mark bi tumenf orr oad is brought up to 260 DEG C by original 230 DEG C.Increasing substantially of Hashpoint standard, causes the flash-point of a lot of bi tumenf orr oad product to be difficult to up to standard.
CN00814167.3 discloses a kind of method improving asphalt properties, relate to a kind of method that production has high flash point and low volatility asphaltic products., the mixed oil of the high point petroleum cut and crude oil that comprise initial boiling point at least 270 DEG C carries out underpressure distillation, to produce the asphaltic products. that flash-point is 265-300 DEG C.The method adds three components in crude oil vacuum distillation process, and this mode can produce certain impact to vacuum distillation process and the vacuum distillate obtained, and is therefore of limited application.
CN02827978.6 discloses a kind of batch process for preparing of high flash point pitch, comprises and joins in batch still by coal tar; Add the intermediate liquid state of hot coal tar to viscid bitumen; Keep the medium temperature of viscid bitumen at maintenance level; And introduce jet flow stream, keep the temperature of coal tar substantially at maintenance level simultaneously.The method can produce the pitch that flash-point exceedes about 270 DEG C, but needs three components coal tar, by the restriction of raw material sources.
Above-mentioned existing method cannot be applicable to existing asphalt production device because of the raising of asphaltic products. standard, and can not produce the problem of qualified product.
Summary of the invention
For the problem that existing road petroleum pitch flash-point can not be up to standard, the invention provides one and significantly improve pitch flash points bituminous composition and preparation method thereof.
Bituminous composition of the present invention comprises matrix pitch and flash-point properties-correcting agent, and flash-point properties-correcting agent is the reaction product of grease and NaOH and/or KOH caustic solution.
In bituminous composition of the present invention, matrix pitch can be asphalt stock or the residual oil raw material of any character as required, and as No. 70 pitches, No. 90 pitches etc., the production method of matrix pitch is well known to those skilled in the art.
In bituminous composition of the present invention, the consumption of flash-point properties-correcting agent is generally 0.2% ~ 5% of matrix pitch quality, is preferably 1% ~ 3%, and concrete consumption can need the amplitude improving flash-point specifically to determine according to matrix pitch.
In bituminous composition of the present invention, the additive that other is conventional can be added as required, as one or more in antiaging agent, tackifier, toughner etc.
The preparation method of bituminous composition of the present invention, is heated to more than softening temperature 10 ~ 100 DEG C, adds flash-point properties-correcting agent, mix by matrix pitch.
In bituminous composition of the present invention, the preparation method of flash-point properties-correcting agent is as follows: grease and NaOH and/or KOH solution carry out saponification reaction under the condition heated, and reaction product does not need separation to be flash-point properties-correcting agent (namely the water in NaOH and/or KOH solution can vapor away in reaction process).Wherein, grease can be one in arbitrary animal grease and Vegetable oil lipoprotein or mixture, can use cheap sewer oil, to reduce costs.Temperature of reaction is generally 80 DEG C ~ 200 DEG C, and be preferably 100 ~ 150 DEG C, the reaction times is generally 10 ~ 180min.The mass concentration of NaOH and/or KOH solution can be 10% to saturated solution, and the weight ratio of oil substances and NaOH and/or KOH is 5:1 ~ 30:1.Saponification reaction is generally NaOH and/or KOH solution are added in grease to react, and reaction process generally needs to carry out under agitation.
In bituminous composition of the present invention, by adding a small amount of flash-point properties-correcting agent, can increase substantially the flash-point value of asphaltic products., do not affect other character of asphaltic products., properties-correcting agent cost is low, and flash-point value improves significantly, generally can improve flash-point more than 30 DEG C.
The preparation method of bituminous composition of the present invention is simple, and the preparation of flash-point properties-correcting agent is simple, and cost is low, and raw material sources are extensive, with a wide range of applications.Concerning existing asphalt production device, do not need to do any change, just can produce the asphaltic products. meeting new standard.
Embodiment
Listed embodiment is the object further illustrated, and improve material of pitch flash points and preparation method thereof and be not limited in described in embodiment, oil substances comprises all animal grease, Vegetable oil lipoprotein.The object of concentration only for further illustrating of the oil substances in embodiment and the material ratio of alkaloids and NaOH/KOH solution, specifically adjusts according to the difference of raw material type, purity and concentration.
Further illustrate as follows below with embodiment:
Embodiment 1
Certain sewer oil 280.0g, 50%(quality) NaOH solution 40g.Under 140 DEG C ± 5 DEG C conditions, the NaOH solution of above-mentioned weight is dripped in above-mentioned sewer oil, titration time 10min, stir 60min after titration completes, the material of pitch flash points must be improved.
Add the material synthesized in a small amount of above-described embodiment in certain 70# petroleum pitch and certain vacuum residuum, its flash-point significantly improves, and the results are shown in Table 1.Result shows, after adding this synthetic, the penetration degree of asphaltic products. slightly reduces, and softening temperature slightly raises, and ductility reduces larger.
table 1 reaction product is on the impact of pitch and residual oil character
| Material | Flash-point, DEG C | Penetration degree, 0.1mm | Softening temperature, DEG C | 10 DEG C of ductilities, cm |
| No. 70 pitches | 241 | 73 | 53.4 | >150 |
| No. 70 pitch+0.8%(quality) embodiment 1 product | 265 | 68 | 56.8 | 50 |
| Certain vacuum residuum | 228 | 156 | — | — |
| Certain vacuum residuum+0.8%(quality) embodiment 1 product | 260 | 148 | — | — |
Embodiment 2
Certain sewer oil 600g, 20%(quality) NaOH solution 100g, under 100 DEG C ± 5 DEG C conditions, the NaOH solution of above-mentioned weight is dripped in above-mentioned sewer oil, titration time 30min, stirs 120min after titration completes, the material of pitch flash points must be improved.
Add the material synthesized in a small amount of above-described embodiment in certain 70# petroleum pitch and certain vacuum residuum, its flash-point significantly improves, and the results are shown in Table 2.Result shows, after adding this synthetic, the penetration degree of asphaltic products. slightly reduces, and softening temperature slightly raises, and ductility reduces larger.
table 2 reaction product is on the impact of pitch and residual oil character
| Material | Flash-point, DEG C | Penetration degree, 0.1mm | Softening temperature, DEG C | 10 DEG C of ductilities, cm |
| No. 70 pitches | 241 | 73 | 53.4 | >150 |
| No. 70 pitch+2%(quality) embodiment 1 product | 273 | 72 | 56.9 | 82 |
| Certain vacuum residuum | 228 | 156 | — | — |
| Certain vacuum residuum+2%(quality) embodiment 1 product | 269 | 145 | — | — |
As can be seen from table 1 and table 2 result, bituminous composition of the present invention effectively can improve flash-point, not obvious to other Index Influence.
Claims (9)
1. a bituminous composition, is characterized in that: bituminous composition comprises matrix pitch and flash-point properties-correcting agent, and flash-point properties-correcting agent is the reaction product of grease and NaOH and/or KOH caustic solution, and the weight ratio of grease and NaOH and/or KOH is 14:1 ~ 30:1.
2. according to bituminous composition according to claim 1, it is characterized in that: matrix pitch is asphalt stock or residual oil raw material.
3. according to bituminous composition according to claim 2, it is characterized in that: matrix pitch is No. 70 pitches or No. 90 pitches.
4. according to bituminous composition according to claim 1, it is characterized in that: the consumption of flash-point properties-correcting agent is 0.2% ~ 5% of matrix pitch quality.
5. according to bituminous composition according to claim 1, it is characterized in that: the consumption of flash-point properties-correcting agent is 1% ~ 3% of matrix pitch quality.
6. according to bituminous composition according to claim 1, it is characterized in that: in bituminous composition, add one or more in antiaging agent, tackifier and toughner.
7. the preparation method of bituminous composition described in claim 1: it is characterized in that: matrix pitch is heated to more than softening temperature 10 ~ 100 DEG C, add flash-point properties-correcting agent, mix and obtain bituminous composition, grease and NaOH and/or KOH solution carry out saponification reaction under the condition heated, reaction product does not need separation to be flash-point properties-correcting agent, and the weight ratio of grease and NaOH and/or KOH is 14:1 ~ 30:1.
8. in accordance with the method for claim 7, it is characterized in that: grease is one in animal grease and Vegetable oil lipoprotein or mixture, and temperature of reaction is 80 DEG C ~ 200 DEG C, and the reaction times is 10 ~ 180min; The mass concentration of NaOH and/or KOH solution is 10% to saturated solution.
9. in accordance with the method for claim 7, it is characterized in that: the temperature of reaction of saponification reaction is 100 ~ 150 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110353552.7A CN103102702B (en) | 2011-11-10 | 2011-11-10 | Asphalt composition and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110353552.7A CN103102702B (en) | 2011-11-10 | 2011-11-10 | Asphalt composition and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103102702A CN103102702A (en) | 2013-05-15 |
| CN103102702B true CN103102702B (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110353552.7A Active CN103102702B (en) | 2011-11-10 | 2011-11-10 | Asphalt composition and preparation method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201700040115A1 (en) * | 2017-04-11 | 2018-10-11 | Idee Vulcaniche S R L | PREPARE FOR USE IN INDUSTRIAL APPLICATIONS AND THEIR PRODUCTION PROCEDURES |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874432A (en) * | 1988-06-27 | 1989-10-17 | Asphalt Materials, Inc. | Multigrade asphalt cement product and process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5437717A (en) * | 1994-06-13 | 1995-08-01 | Vinzoyl Petroleum Co. | Asphalt compositions with improved cross-linking agent |
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- 2011-11-10 CN CN201110353552.7A patent/CN103102702B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4874432A (en) * | 1988-06-27 | 1989-10-17 | Asphalt Materials, Inc. | Multigrade asphalt cement product and process |
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| CN103102702A (en) | 2013-05-15 |
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