CN103102704B - A kind of preparation method of bituminous composition - Google Patents
A kind of preparation method of bituminous composition Download PDFInfo
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- CN103102704B CN103102704B CN201110353556.5A CN201110353556A CN103102704B CN 103102704 B CN103102704 B CN 103102704B CN 201110353556 A CN201110353556 A CN 201110353556A CN 103102704 B CN103102704 B CN 103102704B
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- flash
- point
- correcting agent
- nahco
- organic acid
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Abstract
The invention discloses a kind of preparation method of bituminous composition, matrix pitch is heated to more than fusing point 10 ~ 100 DEG C, adds flash-point properties-correcting agent, mix and obtain bituminous composition product, the preparation method of flash-point properties-correcting agent is, containing organic acid material and Na
2cO
3or NaHCO
3solution carries out saponification reaction under the condition of heating, and reaction product is flash-point properties-correcting agent.The organic acid that saponification reaction uses comprises all saturated fatty acids, oleic acid, linolic acid, sylvic acid etc., the crude tall oil particularly extracted from alkaline process wood pulp raffinate or refining Yatall MA, cheap, wide material sources, the inventive method effectively can improve the flash-point of asphaltic products., generally can improve product flash-point value more than 30 DEG C.
Description
Technical field
The present invention relates to a kind of preparation method of bituminous composition, particularly can significantly improve the bituminous composition preparation method of bituminous composition flash-point.
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 " (JTGF4-2004), 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 tempered oil of the high zeolite oil distillate 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 a kind of preparation method that can significantly improve bituminous composition product flash-point.
The preparation method of bituminous composition of the present invention comprises following process: matrix pitch is heated to more than fusing point 10 ~ 100 DEG C, add flash-point properties-correcting agent, mix and obtain bituminous composition product, wherein the preparation method of flash-point properties-correcting agent is as follows: containing organic acid material and Na
2cO
3or NaHCO
3solution carries out saponification reaction under the condition of heating, and reaction product is flash-point properties-correcting agent.
In the inventive method, the temperature of reaction of saponification reaction is generally 80 DEG C ~ 200 DEG C, and be preferably 100 ~ 150 DEG C, the reaction times is generally 10 ~ 120min.Na
2cO
3or NaHCO
3the mass concentration of solution can be 10% to saturated solution, containing organic acid material and Na
2cO
3or NaHCO
3weight ratio be 3:1 ~ 30:1.Saponification reaction is generally by Na
2cO
3or NaHCO
3solution adds and reacts containing in organic acid material, and reaction process generally needs to carry out under agitation.
In the inventive method, flash-point properties-correcting agent is for containing organic acid material and Na
2cO
3or NaHCO
3the reaction product of solution, containing can containing one or more in the saturated fatty acid of C9 ~ C18, oleic acid, linolic acid, sylvic acid and Yatall MA in organic acid material.
In the inventive method, 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 the inventive method, the consumption of flash-point properties-correcting agent is generally 0.2% ~ 7% of matrix pitch quality, is preferably 1% ~ 5%, and concrete consumption can need the amplitude improving flash-point specifically to determine according to matrix pitch.
In the inventive method, the additive that other is conventional can be added as required, as one or more in antiaging agent, tackifier, toughner etc.
In the inventive method, can be any source containing organic acid material, what preferably value was lower contains organic acid material, and the Yatall MA most preferably extracted from alkaline process wood pulp raffinate can be crude tall oil, also can be refining Yatall MA.
In the inventive method, 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 to equipment without particular requirement, preparation condition relaxes, 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
The present invention is directed to the problem that a lot of bi tumenf orr oad flash-point can not be up to standard, provide one and significantly improve pitch flash points bituminous composition and preparation method thereof, preparation method improves, avoids fat saponification reaction and generate the by products such as glycerine to pitch and the adhering disadvantageous effect of building stones.
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, organic acid substance comprises saturated fatty acid, oleic acid, linolic acid and sylvic acid etc.Carboxylic-acid in embodiment and the material ratio of bases and Na
2cO
3or NaHCO
3the object of concentration only for further illustrating of solution, specifically adjusts according to the difference of raw material type, purity and concentration.
Further illustrate as follows below with embodiment:
Embodiment 1
The crude tall oil 283.4g that certain alkaline process wood pulp raffinate extracts, 50%(quality) NaHCO
3solution 40g, Yatall MA and NaHCO
3mass ratio 14.2:1.Under 120 DEG C ± 5 DEG C conditions, by the NaHCO of above-mentioned weight
3solution is added dropwise in above-mentioned crude tall oil, titration time 10min, stirs 1h, must improve the material of pitch flash points after titration completes.
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, this synthetic other characteristics influence to asphaltic products. is not obvious.
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 | 270 | 69 | 54.6 | >150 |
| Certain vacuum residuum | 228 | 156 | — | — |
| Certain vacuum residuum+0.8%(quality) embodiment 1 product | 264 | 145 | — | — |
Embodiment 2
The crude tall oil 600g that certain alkaline process wood pulp raffinate extracts, 20%(quality) NaHCO
3solution 100g, under 100 DEG C ± 5 DEG C conditions, by the NaHCO of above-mentioned weight
3solution drips in above-mentioned Yatall MA, titration time 30min, stirs 120min, must improve the material of pitch flash points after titration completes.
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, this synthetic other characteristics influence to asphaltic products. is not obvious.
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 | 81 |
| Certain vacuum residuum | 228 | 156 | — | — |
| Certain vacuum residuum+2%(quality) embodiment 1 product | 266 | 144 | — | — |
As can be seen from table 1 and table 2 result, the inventive method effectively can improve the flash-point of pitch, not obvious to other Index Influence.
Claims (10)
1. a preparation method for bituminous composition, is heated to more than softening temperature 10 ~ 100 DEG C, adds flash-point properties-correcting agent, mix and obtain bituminous composition product, it is characterized in that by matrix pitch: the preparation method of flash-point properties-correcting agent is, containing organic acid material and Na
2cO
3or NaHCO
3solution carries out saponification reaction under the condition of heating, and reaction product is flash-point properties-correcting agent, containing organic acid material and Na
2cO
3or NaHCO
3weight ratio be 14.2:1 ~ 30:1, the temperature of reaction of saponification reaction is 80 DEG C ~ 100 DEG C, containing in organic acid material containing one or more in the saturated fatty acid of C9 ~ C18, oleic acid, linolic acid, sylvic acid and Yatall MA.
2. in accordance with the method for claim 1, it is characterized in that: the saponification reaction time is 10 ~ 120min.
3. in accordance with the method for claim 1, it is characterized in that: Na
2cO
3or NaHCO
3the mass concentration of solution can be 10% to saturated solution.
4. according to the method described in claim 1 or 3, it is characterized in that: saponification reaction is by Na
2cO
3or NaHCO
3solution adds and reacts containing in organic acid material, and reaction process needs to carry out under agitation.
5. according to the method described in claim 1 or 2, it is characterized in that: flash-point properties-correcting agent is for containing organic acid material and Na
2cO
3or NaHCO
3the reaction product of solution.
6. in accordance with the method for claim 1, it is characterized in that: matrix pitch is asphalt stock or residual oil raw material.
7. according to the method described in claim 1 or 6, it is characterized in that: matrix pitch is No. 70 pitches or No. 90 pitches.
8. in accordance with the method for claim 1, it is characterized in that: the consumption of flash-point properties-correcting agent is 0.2% ~ 7% of matrix pitch quality.
9. in accordance with the method for claim 1, it is characterized in that: the consumption of flash-point properties-correcting agent is 1% ~ 5% of matrix pitch quality.
10. in accordance with the method for claim 1, it is characterized in that: in bituminous composition preparation process, add one or more in antiaging agent, tackifier and toughner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110353556.5A CN103102704B (en) | 2011-11-10 | 2011-11-10 | A kind of preparation method of bituminous composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110353556.5A CN103102704B (en) | 2011-11-10 | 2011-11-10 | A kind of preparation method of bituminous composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103102704A CN103102704A (en) | 2013-05-15 |
| CN103102704B true CN103102704B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110353556.5A Active CN103102704B (en) | 2011-11-10 | 2011-11-10 | A kind of preparation method of bituminous composition |
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Citations (2)
| 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 |
| US5437717A (en) * | 1994-06-13 | 1995-08-01 | Vinzoyl Petroleum Co. | Asphalt compositions with improved cross-linking agent |
-
2011
- 2011-11-10 CN CN201110353556.5A patent/CN103102704B/en active Active
Patent Citations (2)
| 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 |
| US5437717A (en) * | 1994-06-13 | 1995-08-01 | Vinzoyl Petroleum Co. | Asphalt compositions with improved cross-linking agent |
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| Publication number | Publication date |
|---|---|
| CN103102704A (en) | 2013-05-15 |
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