CN103497523A - Producing method for coal and oil coprocessing residue modified petroleum asphalt - Google Patents
Producing method for coal and oil coprocessing residue modified petroleum asphalt Download PDFInfo
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- CN103497523A CN103497523A CN201310498539.XA CN201310498539A CN103497523A CN 103497523 A CN103497523 A CN 103497523A CN 201310498539 A CN201310498539 A CN 201310498539A CN 103497523 A CN103497523 A CN 103497523A
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Abstract
The invention belongs to the technical field of asphalt modification and discloses a producing method for coal and oil coprocessing residue modified petroleum asphalt. The method comprises the steps of dissolving ground coal and oil coprocessing residues into a solvent at a normal temperature, then mixing the ground coal and oil coprocessing residues with petroleum asphalt to form mixture, extracting the solvent out of the mixture in a vacuum reduced-pressure distillation mode, and finally using a high-speed shearing machine to shear and disperse the residual mixture at a certain temperature to enable coal and oil coprocessing residues to be evenly dispersed into the petroleum asphalt. The producing method can obviously improves dispersion evenness degree of the coal and oil coprocessing residues and the petroleum asphalt and solves the dissociation problem of the coal and oil coprocessing residue modified petroleum asphalt. Compared with an existing producing method for the coal and oil coprocessing residue modified petroleum asphalt, the producing method has the following advantages of being convenient and concise and obvious in effect. In addition, only a reduced-pressure distillation device is added on existing equipment, and the problems of uneven dispersion and dissociation of the existing method are completely solved.
Description
Technical field
The invention belongs to the asphalt modification technical field, particularly a kind of production method of kerosene co-processing residue modified oil pitch.
Technical background
Petroleum asphalt modified is mainly to be undertaken by the mode of interpolation properties-correcting agent in petroleum pitch, and the pitch after modification is called to modifying asphalt.The asphalt modifier kind is more, but that most of properties-correcting agent (comprising kerosene co-processing residue) all is difficult for is compatible with petroleum pitch, easily causes modifying asphalt that segregation phenomenon occurs in storage process, causes the reduction of performance of modified bitumen.
Modified bitumen production method commonly used has direct miscible method, mother material, solvent method, emulsion method.The production method of kerosene co-processing residue modifying asphalt mainly adopts miscible method, after kerosene co-processing residue is added to petroleum pitch, use high-speed shearing machine or colloidal mill to carry out high speed dispersion, because kerosene co-processing residue adds with pulverulence, segregation phenomenon very easily occurs in the kerosene co-processing residue modifying asphalt after therefore disperseing, and causes the unstable properties of modifying asphalt.
In order to solve kerosene co-processing residue modifying asphalt segregation phenomenon, the contriver is by the comparison to the residue composition analysis of kerosene co-processing and modified bitumen production method, finally invent out a kind of modifying asphalt segregation problem before this that solves, make kerosene co-processing residue in the homodisperse method of petroleum pitch camber.
Summary of the invention
The objective of the invention is present situation and deficiency for existing kerosene co-processing residue modified bitumen production method, for making kerosene co-processing residue dispersed at the petroleum pitch camber, keep performance of modified bitumen to stablize and a kind of blend method of invention.
The kerosene co-processing residue the present invention relates to refer to feed coal carry out the hydrogenation liquefaction liquefaction together with black petroleum products or petroleum slag wet goods heavy oils after residual slag, be solid form after underpressure distillation is processed.
No. 90 pitches that the petroleum pitch the present invention relates to (JTGF40-2004) requires for meeting " standard specification for construction and acceptance of highway asphalt pavement ", penetration degree is 80-100.
The production method of a kind of kerosene co-processing residue modified oil pitch provided by the invention, its concrete working condition is: under normal temperature, the kerosene co-processing residue after grinding is dissolved in tetrahydrofuran (THF), then form mixture with the petroleum pitch blend, mode by underpressure distillation extracts tetrahydrofuran (THF) from mixture, finally adopt high-speed shearing machine to shear dispersion in remaining mixture, kerosene co-processing residue is dispersed in petroleum pitch, obtains kerosene co-processing residue modified oil pitch.
Above-mentioned kerosene co-processing residue is (1:5)-(1:10) with the quality of tetrahydrofuran (THF) than scope.
Above-mentioned kerosene co-processing residue is (1:5)-(1:100) with the quality of petroleum pitch than scope.
Kerosene co-processing residue median size after above-mentioned grinding is less than 75 μ m.
The relative pressure of above-mentioned underpressure distillation is (0.04Mpa)-(0.08Mpa), and distillation temperature is 70 ℃-90 ℃.
Above-mentioned shear temperature is 130 ℃-150 ℃, and shearing rate is 1000rpm-6000rpm, and shear time is 5min-30min.
The present invention can obviously improve the degree that is uniformly dispersed of kerosene co-processing residue and petroleum pitch, solves the segregation problem of kerosene co-processing residue modifying asphalt.Compare with existing kerosene co-processing residue modified bitumen production method, have the following advantages: convenient succinct, only need add vacuum distillation apparatus at existing equipment and get final product; Successful, can eliminate the dispersion inequality that existing method exists, the problems such as segregation fully.
Embodiment
Further illustrate characteristics of the present invention below by example, and unrestricted the present invention; Outstanding feature of the present invention and marked improvement, never be limited to following example.
Embodiment 1:
20g kerosene co-processing residue is ground to median size 75 μ m, be dissolved in the 100g tetrahydrofuran (THF), then form mixture with the blend of 100g petroleum pitch, distill (0.04Mpa by vacuum decompression, 90 ℃) tetrahydrofuran (THF) is extracted from mixture, finally under 130 ℃ of conditions, remaining mixture is disperseed to 30min by high-speed shearing machine with the 1000rpm rotating speed cutting, the kerosene co-processing residue modifying asphalt obtained in storage without segregation phenomenon.
Embodiment 2:
15g kerosene co-processing residue is ground to median size 60 μ m, be dissolved in the 80g tetrahydrofuran (THF), then form mixture with the blend of 100g petroleum pitch, distill (0.05Mpa by vacuum decompression, 85 ℃) tetrahydrofuran (THF) is extracted from mixture, finally under 135 ℃ of conditions, remaining mixture is disperseed to 15min by high-speed shearing machine with the 2000rpm rotating speed cutting, the kerosene co-processing residue modifying asphalt obtained in storage without segregation phenomenon.
Embodiment 3:
60g kerosene co-processing residue is ground to median size 50 μ m, be dissolved in the 350g tetrahydrofuran (THF), then form mixture with the blend of 600g petroleum pitch, distill (0.06Mpa by vacuum decompression, 80 ℃) tetrahydrofuran (THF) is extracted from mixture, finally under 140 ℃ of conditions, remaining mixture is disperseed to 10min by high-speed shearing machine with the 3000rpm rotating speed cutting, the kerosene co-processing residue modifying asphalt obtained after disperseing to finish in storage without segregation phenomenon.
Embodiment 4:
10g kerosene co-processing residue is ground to median size 40 μ m, be dissolved in the 60g tetrahydrofuran (THF), then form mixture with the blend of 150g petroleum pitch, distill (0.07Mpa by vacuum decompression, 75 ℃) tetrahydrofuran (THF) is extracted from mixture, finally under 145 ℃ of conditions, remaining mixture is disperseed to 7.5min by high-speed shearing machine with the 4000rpm rotating speed cutting, the kerosene co-processing residue modifying asphalt obtained after disperseing to finish in storage without segregation phenomenon.
Embodiment 5:
10g kerosene co-processing residue is ground to median size 30 μ m, be dissolved in the 60g tetrahydrofuran (THF), then form mixture with the blend of 200g petroleum pitch, distill (0.08Mpa by vacuum decompression, 70 ℃) tetrahydrofuran (THF) is extracted from mixture, finally under 150 ℃ of conditions, remaining mixture is disperseed to 5min by high-speed shearing machine with the 6000rpm rotating speed cutting, the kerosene co-processing residue modifying asphalt obtained after disperseing to finish in storage without segregation phenomenon.
Stability in storage is analyzed
The stable storing Journal of Sex Research is by diameter 25mm, and long 200mm sample tube is erected in 163 ℃ of baking ovens, measures the levels softening temperature after standing undisturbed 12h, and test result is in Table 1.
As known from Table 1, along with the reduction of kerosene co-processing residue fineness, its dispersion in petroleum pitch is more even, and the stability in storage of modifying asphalt is better.
Each embodiment storage stability test result of table 1
| Asphalt sample | The upper strata softening temperature/℃ | Lower floor's softening temperature/℃ | The softening temperature difference/℃ |
| Embodiment 1 | 56.1 | 56.4 | 0.3 |
| Embodiment 2 | 52.4 | 52.6 | 0.2 |
| Embodiment 3 | 49.5 | 49.6 | 0.1 |
| Embodiment 4 | 47.1 | 47.2 | 0.1 |
| Embodiment 5 | 45.3 | 45.3 | 0 |
Claims (6)
1. the production method of a kerosene co-processing residue modified oil pitch, it is characterized in that, its concrete working condition is: under normal temperature, the kerosene co-processing residue after grinding is dissolved in tetrahydrofuran (THF), then form mixture with the petroleum pitch blend, mode by underpressure distillation extracts tetrahydrofuran (THF) from mixture, finally adopt high-speed shearing machine to shear dispersion in remaining mixture, kerosene co-processing residue is dispersed in petroleum pitch, obtains kerosene co-processing residue modified oil pitch.
2. production method according to claim 1, is characterized in that, described kerosene co-processing residue is (1:5)-(1:10) with the quality of tetrahydrofuran (THF) than scope.
3. production method according to claim 1, is characterized in that, described kerosene co-processing residue is (1:5)-(1:100) with the quality of petroleum pitch than scope.
4. production method according to claim 1, is characterized in that, the kerosene co-processing residue median size after described grinding is less than 75 μ m.
5. production method according to claim 1, is characterized in that, the relative pressure of described underpressure distillation is (0.04Mpa)-(0.08Mpa), and distillation temperature is 70 ℃-90 ℃.
6. production method according to claim 1, is characterized in that, described shear temperature is 130 ℃-150 ℃, and shearing rate is 1000rpm-6000rpm, and shear time is 5min-30min.
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| CN201310498539.XA CN103497523B (en) | 2013-10-22 | 2013-10-22 | Producing method for coal and oil coprocessing residue modified petroleum asphalt |
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| CN201310498539.XA CN103497523B (en) | 2013-10-22 | 2013-10-22 | Producing method for coal and oil coprocessing residue modified petroleum asphalt |
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| CN103497523A true CN103497523A (en) | 2014-01-08 |
| CN103497523B CN103497523B (en) | 2015-02-04 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1827697A (en) * | 2006-03-30 | 2006-09-06 | 中国科学院山西煤炭化学研究所 | Road asphalt modifier and utilization method thereof |
| CN101875789A (en) * | 2010-07-05 | 2010-11-03 | 长安大学 | Coal directly-liquefied residue composite modified asphalt and preparation method thereof |
| CN102504854A (en) * | 2011-12-02 | 2012-06-20 | 中国科学院山西煤炭化学研究所 | Method of producing modified asphalt |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1827697A (en) * | 2006-03-30 | 2006-09-06 | 中国科学院山西煤炭化学研究所 | Road asphalt modifier and utilization method thereof |
| CN101875789A (en) * | 2010-07-05 | 2010-11-03 | 长安大学 | Coal directly-liquefied residue composite modified asphalt and preparation method thereof |
| CN102504854A (en) * | 2011-12-02 | 2012-06-20 | 中国科学院山西煤炭化学研究所 | Method of producing modified asphalt |
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Effective date of registration: 20160704 Address after: 030006 Taiyuan, Xiaodian District, Shanxi city street, No. 79 Patentee after: Shanxi Province Transport Science Research Institute Patentee after: Shanxi traffic construction engineering quality inspection center (Co., Ltd.) Address before: 030006 Taiyuan, Xiaodian District, Shanxi city street, No. 79 Patentee before: Shanxi Province Transport Science Research Institute |