CN111635637A - Chemical synthesis method of biological asphalt for roads - Google Patents
Chemical synthesis method of biological asphalt for roads Download PDFInfo
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- CN111635637A CN111635637A CN202010464071.2A CN202010464071A CN111635637A CN 111635637 A CN111635637 A CN 111635637A CN 202010464071 A CN202010464071 A CN 202010464071A CN 111635637 A CN111635637 A CN 111635637A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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Abstract
The invention discloses a chemical synthesis method of biological asphalt for roads, relates to a preparation method of biological asphalt for roads, and aims to solve the problem of poor service performance of the conventional biological asphalt. The chemical synthesis method comprises the following steps: mixing biological oil and an organic solvent according to a mass ratio of 1: 1-3, and uniformly stirring to completely dissolve the biological oil in the organic solvent to obtain a biological oil solution; secondly, adding an initiator into the biological oil solution to obtain a mixed solution; adding the accelerator solution into the mixed solution, and uniformly stirring to obtain a reaction solution; fourthly, reacting for 2-8 hours at the temperature of 85-130 ℃ to obtain the biological asphalt for the road. The invention adds the initiator and the accelerant to realize the free radical polymerization of the biological oil with small molecular weight to long-chain molecules, thereby increasing the viscosity of the biological oil and the adhesiveness between the biological oil and mineral aggregate, the synthesis process is simple, and the prepared biological asphalt meets the service performance of the asphalt for roads.
Description
Technical Field
The invention belongs to the field of road engineering, and particularly relates to a preparation method of biological asphalt for roads.
Background
With the increasingly serious global energy crisis and environmental deterioration, the search for renewable resources and the protection of the natural environment become major problems to be solved urgently. In the field of road engineering, petroleum asphalt is a main road building material, and the annual asphalt consumption of China is counted to be about 2000 million tons. Due to the non-renewable nature of petroleum resources, the price of asphalt materials has begun to rise in recent years. Meanwhile, the preparation and use processes of the asphalt are accompanied by a large amount of carbon emission.
China is a big agricultural and population country, and plant straws and waste oil residues in daily life are large in quantity, so that the ecological system is seriously influenced. If the method can be reasonably treated, the method has important significance for relieving the conventional energy shortage condition in China, promoting the sustainable development of social economy and improving the ecological environment. The existing domestic and foreign treatment process for waste plant straws and waste oil mainly focuses on the preparation of biodiesel and gasoline, and because the quality requirements of automobile engines on the biodiesel and the gasoline are high, the preparation technology and the production efficiency of the automobile engines need to be further improved. In the preparation process, the light components of gasoline and gasoline are obtained mainly by distilling or cracking the waste oil, and the residual heavy components are the bio-oil. Because the biological oil is not treated, the part of the biological oil is black and liquid with certain viscosity at normal temperature, and has no good use performance.
Disclosure of Invention
The invention aims to solve the problem of poor service performance of the conventional biological asphalt and provides a preparation method of the biological asphalt for roads.
The chemical synthesis method of the biological asphalt for the road is realized according to the following steps:
mixing biological oil and an organic solvent according to a mass ratio of 1: 1-3, and uniformly stirring to completely dissolve the biological oil in the organic solvent to obtain a biological oil solution;
secondly, adding an initiator tert-butyl peroxybenzoate into the biological oil solution obtained in the step one to obtain a mixed solution;
mixing an accelerator cobalt naphthenate and an organic solvent, uniformly stirring to completely dissolve the accelerator in the organic solvent to prepare an accelerator solution, adding the accelerator solution into the mixed solution obtained in the step two, and uniformly stirring to obtain a reaction solution;
and fourthly, adding the reaction solution obtained in the third step into a reactor, and reacting for 2-8 hours at the temperature of 85-130 ℃ to obtain the biological asphalt for the road.
Although the original bio-oil has certain viscosity, the molecular weight is small, the viscosity is low, and the adhesiveness with the aggregate is poor. The invention adopts the addition of the initiator tert-butyl peroxybenzoate and the accelerator cobalt naphthenate to realize the free radical polymerization of the biological oil with small molecular weight into long-chain molecules, thereby increasing the viscosity of the biological oil and the adhesiveness between the biological oil and mineral aggregates. The initiator and accelerator function to polymerize the free radicals in the small molecular weight bio-oil.
The raw material used by the invention is the heavy component-bio-oil generated in the process of preparing the bio-diesel and the gasoline by using the waste plant straws and the waste oil, the invention not only reduces the production cost, but also better utilizes energy, improves the service performance of the bio-oil and relieves the situations of insufficient yield and rising price of the traditional road asphalt; the synthetic process of the biological asphalt is simple, the prepared biological asphalt meets the use performance of the asphalt for roads, and the biological asphalt can partially or completely replace the existing asphalt product.
Detailed Description
The first embodiment is as follows: the chemical synthesis method of the road biological asphalt is implemented according to the following steps:
mixing biological oil and an organic solvent according to a mass ratio of 1: 1-3, and uniformly stirring to completely dissolve the biological oil in the organic solvent to obtain a biological oil solution;
secondly, adding an initiator tert-butyl peroxybenzoate into the biological oil solution obtained in the step one to obtain a mixed solution;
mixing an accelerator cobalt naphthenate and an organic solvent, uniformly stirring to completely dissolve the accelerator in the organic solvent to prepare an accelerator solution, adding the accelerator solution into the mixed solution obtained in the step two, and uniformly stirring to obtain a reaction solution;
and fourthly, adding the reaction solution obtained in the third step into a reactor, and reacting for 2-8 hours at the temperature of 85-130 ℃ to obtain the biological asphalt for the road.
The raw materials used in this embodiment include t-butyl peroxybenzoate as the initiator, cobalt naphthenate as the accelerator (CAS number 61789-51-3), organic solvents, and bio-oils.
The embodiment is used for preparing the biological asphalt for road engineering.
The second embodiment is as follows: the difference between this embodiment and the first embodiment is that the organic solvent in the first step is styrene. Other steps and parameters are the same as those in the first embodiment.
The third concrete implementation mode: the embodiment is different from the first embodiment or the second embodiment in that the mass ratio of the biological oil solution to the initiator tert-butyl peroxybenzoate in the second step is 50-100: 0.5 to 4. Other steps and parameters are the same as those in the first or second embodiment.
The fourth concrete implementation mode: the difference between the present embodiment and one of the first to third embodiments is that the mass percentage of the accelerator solution in step three is 1% to 8%. Other steps and parameters are the same as those in one of the first to third embodiments.
The fifth concrete implementation mode: the difference between the present embodiment and one of the first to fourth embodiments is that the mass ratio of the bio-oil, the accelerator and the initiator in the reaction solution in the third step is 30-80: 1-10: 1 to 10. Other steps and parameters are the same as in one of the first to fourth embodiments.
The sixth specific implementation mode: the fifth embodiment is different from the fifth embodiment in that the mass ratio of the bio-oil, the accelerator and the initiator in the reaction solution in the third step is 40-60: 1-5: 1 to 5. The other steps and parameters are the same as those in the fifth embodiment.
The seventh embodiment: the difference between the present embodiment and one of the first to sixth embodiments is that the fourth step is performed at 85-110 ℃ for 2-4 hours. Other steps and parameters are the same as those in one of the first to sixth embodiments.
The specific implementation mode is eight: this embodiment differs from the seventh embodiment in that step four is reacted at a temperature of 85 ℃ for 2 h. Other steps and parameters are the same as those in the seventh embodiment.
The first embodiment is as follows: the chemical synthesis method of the biological asphalt for the road of the embodiment is implemented according to the following steps:
firstly, mixing 50g of bio-oil and 150g of organic solvent styrene, and uniformly stirring to completely dissolve the bio-oil in the organic solvent to obtain a bio-oil solution;
secondly, adding 2g of initiator tert-butyl peroxybenzoate into the biological oil solution obtained in the first step to obtain a mixed solution;
thirdly, mixing 2g of accelerator cobalt naphthenate and 18g of organic solvent styrene, uniformly stirring to completely dissolve the accelerator in the organic solvent to prepare an accelerator solution, then adding 2g of the accelerator solution into 202g of the mixed solution obtained in the second step, and uniformly stirring to obtain a reaction solution;
fourthly, adding the reaction solution obtained in the third step into a reactor, and reacting for 2 hours at the temperature of 85 ℃ to obtain the biological asphalt for the road.
The indexes of the road biological asphalt obtained in the embodiment are as follows:
the biological asphalt obtained by the embodiment has better viscosity and fatigue performance than No. 90 asphalt, and the viscosity performance test is obtained by adopting a T0625-2011 asphalt rotational viscosity test in a test procedure and has slightly poor anti-rutting performance, so that the biological asphalt has better application prospect in northern areas.
Example two: the chemical synthesis method of the biological asphalt for the road of the embodiment is implemented according to the following steps:
firstly, mixing 100g of bio-oil and 100g of organic solvent styrene, and uniformly stirring to completely dissolve the bio-oil in the organic solvent to obtain a bio-oil solution;
secondly, adding 2g of initiator tert-butyl peroxybenzoate into the biological oil solution obtained in the first step to obtain a mixed solution;
thirdly, mixing 2g of accelerator cobalt naphthenate and 38g of organic solvent styrene, uniformly stirring to completely dissolve the accelerator in the organic solvent to prepare an accelerator solution, then adding 4g of the accelerator solution into 202g of the mixed solution obtained in the second step, and uniformly stirring to obtain a reaction solution;
fourthly, adding the reaction solution obtained in the third step into a reactor, and reacting for 4 hours at the temperature of 100 ℃ to obtain the biological asphalt for the road.
The indexes of the road biological asphalt obtained in the embodiment are as follows:
the biological asphalt obtained by the embodiment has better viscosity and anti-rutting performance than No. 90 asphalt and slightly poorer fatigue resistance, so that the biological asphalt has better application prospect in southern high-temperature areas.
Claims (8)
1. The chemical synthesis method of the biological asphalt for the roads is characterized by comprising the following steps:
mixing biological oil and an organic solvent according to a mass ratio of 1: 1-3, and uniformly stirring to completely dissolve the biological oil in the organic solvent to obtain a biological oil solution;
secondly, adding an initiator tert-butyl peroxybenzoate into the biological oil solution obtained in the step one to obtain a mixed solution;
mixing an accelerator cobalt naphthenate and an organic solvent, uniformly stirring to completely dissolve the accelerator in the organic solvent to prepare an accelerator solution, adding the accelerator solution into the mixed solution obtained in the step two, and uniformly stirring to obtain a reaction solution;
and fourthly, adding the reaction solution obtained in the third step into a reactor, and reacting for 2-8 hours at the temperature of 85-130 ℃ to obtain the biological asphalt for the road.
2. The chemical synthesis method of biological asphalt for roads as recited in claim 1, wherein the organic solvent in the first step is styrene.
3. The chemical synthesis method of the biological asphalt for the road as claimed in claim 1, wherein the mass ratio of the biological oil solution to the initiator tert-butyl peroxybenzoate in the second step is 50-100: 0.5 to 4.
4. The chemical synthesis method of biological asphalt for roads as recited in claim 1, wherein the mass percentage of the accelerator solution in the third step is 1% -8%.
5. The chemical synthesis method of the biological asphalt for the road according to claim 1, wherein the mass ratio of the biological oil, the accelerator and the initiator in the reaction solution in the step three is 30-80: 1-10: 1 to 10.
6. The chemical synthesis method of the biological asphalt for the road according to claim 5, wherein the mass ratio of the biological oil, the accelerator and the initiator in the reaction solution in the step three is 40-60: 1-5: 1 to 5.
7. The chemical synthesis method of the biological asphalt for the roads, as claimed in claim 1, is characterized in that the reaction in the fourth step is carried out at a temperature of 85-110 ℃ for 2-4 h.
8. The chemical synthesis method of the biological asphalt for roads of claim 7, wherein the step four is carried out at a temperature of 85 ℃ for 2 hours.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010464071.2A CN111635637A (en) | 2020-05-27 | 2020-05-27 | Chemical synthesis method of biological asphalt for roads |
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| CN202010464071.2A CN111635637A (en) | 2020-05-27 | 2020-05-27 | Chemical synthesis method of biological asphalt for roads |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112280323A (en) * | 2020-11-03 | 2021-01-29 | 哈工(辽宁)交通科技有限公司 | Preparation method of asphalt regenerant with large-proportion RAP mixing amount |
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| US20100275817A1 (en) * | 2009-05-01 | 2010-11-04 | Iowa State University Research Foundation, Inc. | Asphalt materials containing bio-oil and methods for production thereof |
| CN104388107A (en) * | 2014-11-03 | 2015-03-04 | 交通运输部公路科学研究所 | Esterified biological asphalt and preparation method thereof |
| US20150183961A1 (en) * | 2013-12-26 | 2015-07-02 | Mahesh Talwar | Biomass Processing |
| CN107434917A (en) * | 2016-06-03 | 2017-12-05 | 交通运输部公路科学研究所 | A kind of Biological asphalt and preparation method thereof |
| CN108504111A (en) * | 2018-02-24 | 2018-09-07 | 东南大学 | A kind of anti-aging bitumen regenerant and preparation method thereof based on bio oil |
-
2020
- 2020-05-27 CN CN202010464071.2A patent/CN111635637A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100275817A1 (en) * | 2009-05-01 | 2010-11-04 | Iowa State University Research Foundation, Inc. | Asphalt materials containing bio-oil and methods for production thereof |
| US20150183961A1 (en) * | 2013-12-26 | 2015-07-02 | Mahesh Talwar | Biomass Processing |
| CN104388107A (en) * | 2014-11-03 | 2015-03-04 | 交通运输部公路科学研究所 | Esterified biological asphalt and preparation method thereof |
| CN107434917A (en) * | 2016-06-03 | 2017-12-05 | 交通运输部公路科学研究所 | A kind of Biological asphalt and preparation method thereof |
| CN108504111A (en) * | 2018-02-24 | 2018-09-07 | 东南大学 | A kind of anti-aging bitumen regenerant and preparation method thereof based on bio oil |
Non-Patent Citations (1)
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| ZHAOJIE SUN等: "Preparation of bio-bitumen by bio-oil based on free radical polymerization and production process optimization", 《JOURNAL OF CLEANER PRODUCTION》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112280323A (en) * | 2020-11-03 | 2021-01-29 | 哈工(辽宁)交通科技有限公司 | Preparation method of asphalt regenerant with large-proportion RAP mixing amount |
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Application publication date: 20200908 |