CN109535747B - No. 30 hard road asphalt and preparation method thereof - Google Patents
No. 30 hard road asphalt and preparation method thereof Download PDFInfo
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- CN109535747B CN109535747B CN201811174559.0A CN201811174559A CN109535747B CN 109535747 B CN109535747 B CN 109535747B CN 201811174559 A CN201811174559 A CN 201811174559A CN 109535747 B CN109535747 B CN 109535747B
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- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
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Abstract
The invention discloses a No. 30 hard road asphalt and a preparation method thereof, wherein the raw materials comprise vacuum residue, deoiled asphalt mixture and furfural extract oil mixture. The vacuum residue is intermediate-based and/or naphthenic vacuum residue, and the penetration degree of the vacuum residue is 10-30/0.1 mm. The deoiled asphalt mixture is prepared by mixing deoiled asphalt and heavy deasphalted asphalt oil according to the mass ratio of 1: 0.4-2.5, and the penetration degree after mixing is 70-90/0.1 mm. The furfural extract oil mixture is extract oil obtained by respectively refining light deasphalted oil and reduced four-line distillate oil by furfural, and the mass ratio of the extract oil to the furfural extract oil is 1: 2-4, and the aromatic hydrocarbon content is more than or equal to 80 percent after mixing. The No. 30 hard asphalt provided by the invention can meet the requirements of a hot area at high temperature, and can meet the requirements of a cold area and a warm area at winter at low temperature.
Description
Technical Field
The invention relates to the field of petroleum product processing, in particular to No. 30 hard road asphalt and a preparation method thereof.
Background
In recent years, the construction of roads in China has been developed rapidly, but with the increasing road traffic volume of heavy-duty vehicles, ruts, pits and the like on the road surface are caused to become one of the main disease manifestations of asphalt pavement. A large number of researches and application practices show that the hard asphalt with the characteristics of high softening point and low penetration can effectively relieve the diseases of pavement rutting and the like.
At present, the hard road asphalt used in China is mainly No. 50 asphalt, and the production and research of No. 30 asphalt are relatively less.
Chinese patent CN101492570A discloses a hard road asphalt composition and a preparation method thereof. The composition comprises hard asphalt with penetration degree of below 351/10mm, a softening agent, a chemical modifier and base asphalt. Although the hard asphalt prepared by the patent has good high-temperature performance, only the low-temperature performance analysis of 25 ℃ ductility is performed, and the asphalt anti-aging performance index test in national standards is lacked, so that the requirements of the ministry of transportation and the national standards on the hard asphalt can not be met in practice.
Chinese invention patent CN104650602A discloses a high-grade road hard asphalt and a preparation method thereof, and the raw materials of the patent comprise deoiled asphalt, topping oil slurry, polymer modifier and auxiliary agent. Although the hard asphalt prepared by the patent has good performance and can meet the index requirement of No. 30 hard road asphalt, the polymer modifier is added into the components, so the cost is higher and the preparation process is complex.
Chinese patent CN105694492A discloses a hard asphalt, the raw materials include Boscan crude oil and Mary-16 crude oil, extract oil, rubber oil, two-line oil, three-line oil and four-line oil. The production method adopts a decompression direct drawing process. The raw material source of the patent is narrow, and the production process of the patent has strict requirements on the stability of the reduced pressure distillation process, so the limitation is high, and the popularization is not facilitated.
Disclosure of Invention
The first purpose of the invention is to provide a No. 30 hard road asphalt, and all indexes of the asphalt prepared by the invention meet the requirements of No. 30 hard road asphalt of the technical Specification for asphalt pavement construction of highways of the Ministry of transportation (JTG-F402004).
The second purpose of the invention is to provide a preparation method of the No. 30 hard road asphalt.
The first purpose of the invention can be realized by the following technical scheme:
the No. 30 hard road asphalt comprises the following components in parts by mass:
75-85 parts of vacuum residue
10-20 parts of deoiled asphalt mixture
1-5 parts of furfural extract oil mixture
The vacuum residue is intermediate-base and/or naphthenic vacuum residue, and the penetration degree of the vacuum residue is 10-30/0.1 mm;
the deoiled asphalt mixture is prepared by mixing deoiled asphalt and heavy deasphalted asphalt oil in a mass ratio of 1: 0.4-2.5, and the penetration degree after mixing is 70-90/0.1 mm;
the furfural extract oil mixture is extract oil obtained by refining light deasphalted oil and reduced four-line distillate oil through furfural respectively, and the mass ratio of the extract oil to the distillate oil is 1: 2-4, and the aromatic hydrocarbon content is more than or equal to 80 percent after mixing.
Preferably, the deoiled asphalt and heavy deasphalted oil are petroleum crude oil products of intermediate base and/or naphthenic base; the light deasphalted oil and the four-line-reduced distillate oil are petroleum crude oil products of intermediate base and/or naphthenic base; the light deasphalted oil is deasphalted oil with carbon residue less than 3.5% after vacuum residue is deasphalted by a solvent; the heavy deasphalted oil is deasphalted oil with carbon residue of 3.5% or more after vacuum residue is deasphalted by solvent. The solvent used was propane.
The petroleum crude oil can be classified into three types of paraffin-based crude oil, naphthenic base crude oil and intermediate base crude oil according to composition classification, wherein the paraffin-based crude oil has higher paraffin content, and the performance of a finished product is poorer if the paraffin-based crude oil is used as a raw material, so that the requirements of No. 30 hard road asphalt cannot be met.
The vacuum residue refers to the residue oil extracted from the bottom of a vacuum distillation tower of a petroleum refinery after the petroleum crude oil passes through the vacuum distillation tower, and is the part of the crude oil with the highest boiling point, the highest relative molecular mass, the highest heteroatom content and the most complex structure.
The products of the vacuum residue after solvent deasphalting are deasphalted asphalt and deasphalted oil, wherein the deasphalted oil is divided into light deasphalted oil and heavy deasphalted oil according to the content of carbon residue.
The furfural refining is a process of separating ideal components from non-ideal components in raw materials by using furfural as a solvent. The functions are to improve the viscosity-temperature performance of the oil product, reduce the carbon residue value and the acid value, improve the oxidation stability of the oil product and reduce the color of the oil product. The obtained extract oil is a byproduct and has high aromatic hydrocarbon content.
The preparation method of the No. 30 hard road asphalt comprises the following steps:
1) blending the deoiled asphalt and the heavy deasphalted oil at the temperature of 210 ℃ and 260 ℃ until the mixture is uniformly blended until no layering occurs, thus obtaining a deoiled asphalt mixture;
2) mixing the light extracted oil and the light extracted oil obtained by processing through a furfural refining process at 90-100 ℃ until no layering occurs to obtain a furfural extracted oil mixture;
3) uniformly blending the vacuum residue and the deoiled asphalt mixture at the temperature of 130-165 ℃ until the mixture is not layered any more, and then adding the furfural extract oil mixture to be uniformly blended at the temperature of more than 130-165 ℃ until the mixture is not layered any more;
4) and (4) detecting the mixture obtained in the step 3), wherein the product is the product with the parameters meeting the technical specification of highway asphalt pavement construction of the department of transportation No. 30 hard road asphalt.
After the petroleum crude oil passes through the fractionating tower to obtain various products, the raw materials for producing the oil are directly subjected to pre-processing by the original equipment of oil refineries such as furfural refining, solvent deasphalting and the like, then the deoiled asphalt and the heavy deasphalted oil are subjected to on-line blending in a pipeline, the light deasphalted extract oil and the heavy deasphalted extract oil are blended in a storage tank, and the furfural vacuum residue is blended with the deoiled asphalt mixture and the furfural extract oil mixture in the storage tank. The equipment used in the production method is the existing equipment of the oil refinery, and no additional customized equipment is needed.
The temperature required for blending is to keep the fluidity of each component and ensure no coagulation during blending and uniformity after blending. And because the temperature of each raw material after being sent out from the distillation tower is usually higher than the temperature required by the blending required by the invention, no additional heating equipment is required.
Compared with the prior art, the invention has the following beneficial effects:
1) the main raw materials of the asphalt are byproducts of oil refining, and no modifier is needed to be added, so that the raw materials are large in quantity and easy to obtain, the production cost of the hard road asphalt is reduced, and the utilization value of the byproducts is improved.
2) The patent adopts a blending production mode, reduces the severity of the crude oil reduced pressure distillation process on the requirement of stable control, and has more flexible and simple production.
3) The high-temperature performance of the hard road asphalt prepared by the invention can meet the requirements of a hot area, and the low-temperature performance can meet the requirements of a cold area and a warm area in winter.
Detailed Description
The following examples further illustrate the invention so that those skilled in the art may better understand it and practice it, but the examples are not intended to limit the invention.
Example one
The No. 30 hard road asphalt provided by the embodiment is prepared from the following raw materials in parts by mass:
vacuum residue 81
Deoiled asphalt mixture 15
Furfural extraction oil mixture 4
Wherein the vacuum residue is obtained by mixing Kovat crude oil and anglesago knop crude oil according to the proportion (mass ratio) of 1:1, and the penetration degree is 260.1mm after mixing;
the deoiled asphalt mixture is obtained by mixing deoiled asphalt obtained by processing Saite light crude oil after propane deasphalting with heavy deasphalted oil according to the proportion (mass ratio) of 2.5:1, and the penetration degree is 900.1 mm;
the furfural extract oil mixture is obtained by mixing light-off-line furfural refined extract oil obtained by processing sandy light crude oil and reduced-off-line furfural refined extract oil according to a ratio (mass ratio) of 1: 3.
The preparation method comprises the following steps:
1) and (3) performing pipeline on-line blending on the deoiled asphalt obtained by the propane deasphalting process and the heavy deasphalted oil at 210-260 ℃ to obtain the deoiled asphalt mixture.
2) Blending the light-removed extract oil and the crude oil obtained by furfural refining at 90-100 ℃ for 0.5-2 hours until the oil is not layered to obtain a furfural extract oil mixture;
3) blending the vacuum residue and the deoiled asphalt mixture at the temperature of 130-165 ℃ uniformly until no layering occurs, and then adding the furfural extract oil mixture for blending at the temperature of 130-165 ℃; and testing to detect performance.
Example two
The No. 30 hard road asphalt provided by the embodiment is prepared from the following raw materials in parts by mass:
vacuum residue 85
Deoiled asphalt mixture 11
Furfural extraction oil mixture 4
Wherein the vacuum residue is obtained by mixing the Iran heavy crude oil and the Iran Soxhlet crude oil according to the proportion (mass ratio) of 7:3, and the penetration degree is 300.1mm after mixing;
the deoiled asphalt mixture is obtained by mixing deoiled asphalt obtained by propane deasphalting processing of Aman crude oil and heavy deasphalted oil according to the proportion (mass ratio) of 1.5:1, and the penetration degree is 700.1 mm;
the furfural extract oil mixture is obtained by mixing light-off-line furfural refined extract oil obtained by processing sandy light crude oil and reduced-off-line furfural refined extract oil according to a ratio (mass ratio) of 1: 3.
The preparation method comprises the following steps:
1) and (3) performing pipeline on-line blending on the deoiled asphalt obtained by the propane deasphalting process and the heavy deasphalted oil at 210-260 ℃ to obtain the deoiled asphalt mixture.
2) Blending the light-removed extract oil and the reduced-four-line extract oil obtained by furfural refining at 90-100 ℃ for 0.5-2 hours until the oil is not layered to obtain a furfural extract oil mixture;
3) uniformly blending the vacuum residue and the deoiled asphalt mixture at the temperature of 130-165 ℃ until the mixture is not layered any more, and then adding the furfural extract oil mixture for blending at the temperature of 130-165 ℃; and tested to test performance.
The results of physical and chemical experiments on the products obtained in examples one and two, which were carried out by the experimental method described in "JTG-F402004", are shown in Table 1:
table 1 analysis of properties of examples
Experimental results show that all indexes of the asphalt prepared by the invention meet the requirements of No. 30 hard road asphalt of technical Specification for asphalt pavement construction of highways of the Ministry of transportation (JTG-F402004).
The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above-described structure of the present invention without departing from the basic technical concept of the present invention as described above, according to the common technical knowledge and conventional means in the field of the present invention.
Claims (2)
1. The No. 30 hard road asphalt is characterized by comprising the following components in parts by mass:
75-85 parts of vacuum residue
10-20 parts of deoiled asphalt mixture
1-5 parts of furfural extract oil mixture
The vacuum residue is intermediate-base and/or naphthenic vacuum residue, and the penetration degree of the vacuum residue is 10-30/0.1 mm;
the deoiled asphalt mixture is prepared by mixing deoiled asphalt and heavy deasphalted asphalt oil in a mass ratio of 1: 0.4-2.5, and the penetration degree after mixing is 70-90/0.1 mm; the deoiled asphalt and the heavy deasphalted oil are petroleum crude oil products of intermediate base and/or naphthenic base;
the furfural extract oil mixture is extract oil obtained by respectively refining light deasphalted oil and reduced four-line distillate oil through furfural, and the mass ratio of the extract oil to the furfural extract oil mixture is 1: 2-4, and the aromatic hydrocarbon content is more than or equal to 80 percent after mixing; the light deasphalted oil and the minus four-line distillate oil are petroleum crude oil products of intermediate base and/or naphthenic base;
the light deasphalted oil is deasphalted oil with carbon residue less than 3.5% after vacuum residue is deasphalted by a solvent; the heavy deasphalted oil is deasphalted oil with carbon residue of 3.5% or more after vacuum residue is deasphalted by a solvent;
the solvent is propane.
2. The method for preparing No. 30 hard road asphalt according to claim 1, which is characterized by comprising the following steps:
1) blending the deoiled asphalt and the heavy deasphalted oil at the temperature of 210 ℃ and 260 ℃ until the mixture is uniformly blended until no layering occurs, thus obtaining a deoiled asphalt mixture;
2) blending the light-removed extract oil and the reduced-four-line extract oil obtained by processing by a furfural refining process at 90-100 ℃ until no layering occurs to obtain a furfural extract oil mixture;
3) blending the vacuum residue and the deoiled asphalt mixture at the temperature of 130-165 ℃ uniformly until no layering occurs, and then adding the furfural extract oil mixture at the temperature of 130-165 ℃ for blending uniformly until no layering occurs;
4) and (3) detecting the mixture obtained in the step 3), wherein the product is the hard road asphalt with the parameters meeting the technical specification of highway asphalt pavement construction of Ministry of transportation No. 30.
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| CN114437555B (en) * | 2020-10-16 | 2023-10-10 | 中国石油化工股份有限公司 | Mixed asphalt and preparation method thereof, asphalt mixture and preparation method thereof |
| CN114426778B (en) * | 2020-10-29 | 2022-12-16 | 中国石油化工股份有限公司 | Asphalt composition and preparation method thereof |
| CN116554699A (en) * | 2023-06-16 | 2023-08-08 | 山东海韵沥青有限公司 | Low-temperature performance improver for waterproof asphalt, preparation method of low-temperature performance improver and waterproof asphalt |
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