CN103804923B - A kind of preparation method of bituminous composition - Google Patents
A kind of preparation method of bituminous composition Download PDFInfo
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- CN103804923B CN103804923B CN201210439794.2A CN201210439794A CN103804923B CN 103804923 B CN103804923 B CN 103804923B CN 201210439794 A CN201210439794 A CN 201210439794A CN 103804923 B CN103804923 B CN 103804923B
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Abstract
The invention discloses the preparation method of a kind of bituminous composition, in matrix pitch, carry out saponification including following content: NaOH and/or KOH solution with oil substances, obtain bituminous composition.Wherein, NaOH and/or KOH consumption is the 3% ~ 80% of oil substances quality, and oil substances consumption is the 0.2% ~ 8% of matrix pitch quality.In the inventive method, saponification is carried out in Colophonium medium, reaction gentleness, and preparation method is simple, low cost, and raw material sources are extensive, can significantly improve the flash-point of matrix pitch, being widely used property.
Description
Technical field
The present invention relates to the preparation method of a kind of bituminous composition, particularly significantly improve the preparation method of the bituminous composition of pitch flash points.
Background technology
Flash-point is the sign of bi tumenf orr oad construction safety.Flash-point is the highest, then Colophonium is the most nonflammable in work progress, and safety coefficient is the highest.In order to ensure the safety of construction, the flash-point of No. 90 bi tumenf orr oads is brought up to 245 DEG C by original 230 DEG C by Ministry of Communications's standard " standard specification for construction and acceptance of highway asphalt pavement enforcement manual " (JTG F4-2004), and by original 230 DEG C, the flash-point of No. 70 and following trade mark bi tumenf orr oad is brought up to 260 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.
CN1378582A discloses a kind of method improving asphalt performance, relate to a kind of production and there is high-flash and the method for low volatility asphaltic products, decompression distillation is carried out, in order to producing flash-point is the asphaltic products of 265-300 DEG C including the high point petroleum fraction of initial boiling point at least 270 DEG C and the mixed oil of crude oil.The method is interpolation the 3rd component 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.
CN1617916A discloses the batch process for preparing of a kind of high-flash Colophonium, joins in batch still including by coal tar；Add hot coal tar to the intermediate liquid state of maltha；Keep the medium temperature of maltha at maintenance level；And introduce injection gas, keep the temperature of coal tar substantially at maintenance level simultaneously.The method can produce the Colophonium that flash-point exceedes about 270 DEG C, but needs the 3rd component coal tar, is limited by raw material sources.
Above-mentioned existing method cannot be applicable to existing asphalt production device and improve because of asphaltic products standard, and the problem that can not produce qualified products.
Summary of the invention
Problem that can not be up to standard for existing road asphalt flash-point, the invention provides the preparation method of a kind of bituminous composition significantly improving pitch flash points.
The preparation method of bituminous composition of the present invention, carries out saponification including following content: NaOH and/or KOH solution in matrix pitch with oil substances, obtains bituminous composition.
In the inventive method, matrix pitch need to be heated to trickling state, then mixs homogeneously with oil substances, adds NaOH and/or KOH solution carries out saponification, and the response time is generally 10 ~ 180 minutes.Course of reaction is it is generally required to carry out under agitation.
In the inventive method, NaOH and/or KOH consumption is the 3% ~ 80% of oil substances quality, and oil substances consumption is the 0.2% ~ 8% of matrix pitch quality.
In the inventive method, mass percent concentration 10% to the saturated solution of NaOH and/or KOH solution, preferably saturated solution.
In the inventive method, oil substances can be the one in arbitrary animal oil and Vegetable oil lipoprotein or mixture, preferably waste oil.
In the inventive method, matrix pitch can be asphalt stock or the residual oil raw material of any character as required, and such as No. 70 Colophoniumes, No. 90 Colophoniumes etc., the production method of matrix pitch is well known to those skilled in the art.
In the inventive method, other conventional additive can be added as needed on, as one or more in agent etc. are prolonged in age resister, viscosifier, toughener or increasing.
In the inventive method, oil substances and the saponification product of alkaline solution, the flash-point value of asphaltic products can be increased substantially, do not affect other character of asphaltic products, generally add and can improve matrix pitch flash-point a little more than 30 DEG C.
Preparation method of the present invention is simple, low cost, and raw material sources are extensive, with a wide range of applications.Saponification is carried out in Colophonium medium, and oil substances is prone to mix homogeneously with matrix pitch, and saponification post-modification bituminous composition character is homogeneous, and react gentle, for existing asphalt production device, it is not necessary to make any change, it is possible to produce the asphaltic products meeting new standard.
Detailed description of the invention
Listed embodiment is the purpose further illustrated, and the material involved by the inventive method is not limited in described in embodiment, matrix pitch be asphalt stock or all can be as the residual oil of asphalt stock, oil substances includes all animal oils and Vegetable oil lipoprotein.Oil substances in embodiment is only the purpose further illustrated with the material ratio of alkaloids, adjusts with specific reference to matrix pitch medium pitch acid content, the purity of oil substances.
It is further described below with embodiment below:
Embodiment 1
Certain No. 70 asphalt 1000g, adds certain waste oil 4g under the conditions of 150 DEG C ± 5 DEG C, is slowly dropped into NaOH saturated solution 4g after stirring, and titration process is carried out the most under agitation, is stirred for 20 minutes, obtains product after titration.Product characteristics the results are shown in Table 1.
Embodiment 2
Certain decompression residuum 1000g, adds Adeps Bovis seu Bubali 50g under the conditions of 150 DEG C ± 5 DEG C, stirs, be slowly dropped into NaOH saturated solution 20g after thawing, and titration process is carried out the most under agitation, is stirred for 160 minutes, obtains product after titration.Product characteristics the results are shown in Table 1.
Embodiment 3
Certain decompression residuum 1000g, adds certain waste oil 20g under the conditions of 135 DEG C ± 5 DEG C, is slowly dropped into the NaOH18g of 20wt% after stirring, and this process is carried out the most under agitation, is stirred for 90 minutes, obtains product after titration.Product characteristics the results are shown in Table 1.
Table 1 embodiment raw material and product characteristics.
| Material | Flash-point, DEG C | Needle penetration, 0.1mm | Softening point, DEG C |
| No. 70 Colophoniumes | 241 | 73 | 53.4 |
| Embodiment 1 | 262 | 69 | 55.8 |
| Decompression residuum | 228 | 156 | — |
| Embodiment 2 | 271 | 132 | — |
| Embodiment 3 | 260 | 140 | — |
As can be seen from Table 1, by adding oil substances and aqueous slkali, the flash-point of bituminous composition of the present invention is significantly improved, and softening point raises, and improves the ageing resistace of product.
Claims (8)
1. the preparation method of a bituminous composition, it is characterised in that: NaOH and/or KOH solution carry out saponification with oil substances in matrix pitch, obtain bituminous composition；NaOH and/or KOH consumption is the 18% ~ 80% of oil substances quality；Oil substances is the 0.2% ~ 0.4% of matrix pitch quality.
The most in accordance with the method for claim 1, it is characterised in that: matrix pitch is heated to trickling state, then mixs homogeneously with oil substances, adds NaOH and/or KOH solution carries out saponification.
The most in accordance with the method for claim 1, it is characterised in that: the saponification time is 10 ~ 180 minutes, and course of reaction is carried out under agitation.
The most in accordance with the method for claim 1, it is characterised in that: the mass percent concentration of NaOH and/or KOH solution is 10% to saturated solution.
The most in accordance with the method for claim 1, it is characterised in that: oil substances is the one in animal oil and Vegetable oil lipoprotein or mixture.
The most in accordance with the method for claim 1, it is characterised in that: oil substances is waste oil.
The most in accordance with the method for claim 1, it is characterised in that: matrix pitch is asphalt stock or residual oil raw material.
The most in accordance with the method for claim 1, it is characterised in that: preparation process adds age resister, viscosifier, toughener or increasing and prolongs one or more in agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210439794.2A CN103804923B (en) | 2012-11-07 | 2012-11-07 | A kind of preparation method of bituminous composition |
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| CN201210439794.2A CN103804923B (en) | 2012-11-07 | 2012-11-07 | A kind of preparation method of bituminous composition |
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| CN103804923A CN103804923A (en) | 2014-05-21 |
| CN103804923B true CN103804923B (en) | 2016-08-17 |
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| CN201210439794.2A Active CN103804923B (en) | 2012-11-07 | 2012-11-07 | A kind of preparation method of bituminous composition |
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Citations (3)
| 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 |
| CN102585529A (en) * | 2012-02-29 | 2012-07-18 | 武汉理工大学 | Asphalt regenerant prepared by utilizing waste edible oil and preparing process of asphalt regenerant |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2462322A (en) * | 2008-08-05 | 2010-02-10 | Aggregate Ind Uk Ltd | Asphalt Rejuvenation |
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2012
- 2012-11-07 CN CN201210439794.2A patent/CN103804923B/en active Active
Patent Citations (3)
| 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 |
| CN102585529A (en) * | 2012-02-29 | 2012-07-18 | 武汉理工大学 | Asphalt regenerant prepared by utilizing waste edible oil and preparing process of asphalt regenerant |
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| CN103804923A (en) | 2014-05-21 |
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