CN1231308A - Method for producing road asphalt with improved ageing resistance - Google Patents
Method for producing road asphalt with improved ageing resistance Download PDFInfo
- Publication number
- CN1231308A CN1231308A CN 98101507 CN98101507A CN1231308A CN 1231308 A CN1231308 A CN 1231308A CN 98101507 CN98101507 CN 98101507 CN 98101507 A CN98101507 A CN 98101507A CN 1231308 A CN1231308 A CN 1231308A
- Authority
- CN
- China
- Prior art keywords
- asphalt
- oil
- blending component
- petroleum pitch
- pitch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The production method of road asphalt with improved ageing property is characterized by using petroleum asphalt whose softening point is 60-90 deg.C and penetration degree at 25 deg.C is less than 40 as raw material, using one or more mixtures selected from treated catalytically cracked slurry oil, treated ethylene tar, solvent refined extractive oil and depressurized residuum whose aromatic ratio is greater than 50 m% as mixing component, and fully mixing the petroleum asphalt with the mixing component according to the weight ratio of 0.5-12.0 : 1 to obtain the invented product. After the oven test of its film the ductility of said high-grade road asphalt product at 15 deg.C is greater than 100 cm.
Description
The present invention relates to a kind of production method of road bitumen, more particularly, is to concoct the method for producing asphalt for high grade road by petroleum pitch and other petroleum products/half product.
Along with developing rapidly of Chinese national economy, increase day by day as the Road construction of Infrastructure, also increasing to the demand of asphalt for high grade road.Annual 500000 tons of the asphalt for high grade road that need of the enforcement period of the ninth five-year plan China, wherein annual 80000 tons of the asphalt for high grade road that need in special road surface such as express highway pavement, bridge pavement, airport pavement.The asphalt for high grade road that meets GB/T 15180-94 only is suitable for being laid on the general high grade highway pavement, and be not suitable for being laid on the above-mentioned special road surface, major cause is that its aging resistance is poor, be in particular in (163 ℃ of Thin Film Oven Test TFOTs, 5hr) back 15 ℃ of ductilities are less, and the crack appears in road surface easily.Therefore the used pitch in special road surface depends on import for a long time.The practice of highway division shows, has only behind the Thin Film Oven Test TFOT asphalt for high grade road of 15 ℃ of ductilities greater than 80cm, could satisfy above-mentioned special road surface well to the bituminous requirement.Utilize existing petroleum resources to produce the asphalt for high grade road of good aging how rationally, fully,, reduce the import volume of asphalt for high grade road, all have great importance for the contradiction of alleviating between the road bitumen market supply and demand.
The whole world has 1500 kinds of crude oil approximately, is suitable for producing just about 260 kinds of the crude oil of road bitumen.The production of road bitumen and the kind of crude oil have confidential relation.For different types of crude oil, the production method of road bitumen is also different.The production method of road bitumen mainly contains distillation method, oxidation style, solvent deoiling mixing asphalt method at present.Wherein solvent deoiling mixing asphalt method is with flexible operation, to advantages such as the wide adaptability of raw material and asphaltic products. systems easy to control the quality and be used widely.The key of solvent deoiling mixing asphalt method is to concoct the choose reasonable of component.The full cut of catalytically cracked oil is once as ordinary road pitch 60
#Or 100
#The blending component, but as asphalt for high grade road AH-70
#Or AH-90
#The blending component time, the asphalt film baking oven of production test back mass loss, penetration ratio are all defective, especially 15 ℃ of ductilities have only about 20cm.With the asphalt for high grade road that other blending component such as deasphalted oil, colloid are produced, 15 ℃ of the highest 80cm that also are no more than of ductility behind the Thin Film Oven Test TFOT.
The patent that relevant solvent deoiling mixing asphalt method is produced road bitumen only have at present one piece the most relevant, the de-oiled asphalt that proposes to obtain with solvent deasphalting technology in the day disclosure special permission communique 6116499 is a raw material, add the blending component of 10～70m%, production penetration degree is 30～100 high viscosity road bitumen after concocting.Wherein the asphalt content of de-oiled asphalt is 20～60m%, the blending component comprises lubricant base, solvent treatment extraction oil, gatch, vacuum distillate, vacuum residuum, deasphalted oil, visbreaking residue, its flash-point is greater than 150 ℃, and saturated part is 15～35m%.Though this patent provides a kind of method by solvent deoiling pitch and other petroleum products/half product blending production high viscosity road bitumen, does not relate to and improves its aging resistance.
The purpose of this invention is to provide and a kind ofly concoct the method for producing the improved asphalt for high grade road of aging resistance by petroleum pitch and other petroleum products/half product.
Method provided by the invention is: is raw material with 60～90 ℃ of softening temperatures, 25 ℃ of penetration degree less than 40 petroleum pitch, with fragrance part greater than 50m% be selected from handle the back catalytically cracked oil, handle the back ethylene bottom oil, one or more mixture that solvent treatment is extracted out in oil, the vacuum residuum is the blending component, press the weight ratio 0.5～12.0: 1 of petroleum pitch and blending component, with the two thorough mixing.
Method provided by the invention is so concrete enforcement: with 60～90 ℃ of softening temperatures, preferably 65～85 ℃, 25 ℃ penetration degrees are less than 40, preferably 2～30 petroleum pitch is raw material, with fragrance part greater than 50m%, the mixture of one or more after preferably 60～80m% is selected from and handles the back catalytically cracked oil, handles in ethylene bottom oil, solvent treatment extraction oil, the vacuum residuum is the blending component, press the weight ratio 0.5～12.0: 1 of petroleum pitch and blending component, preferably 1.0～6.0: 1, with the two thorough mixing.
Petroleum pitch used in the present invention can be the de-oiled asphalt from solvent deasphalting technology, also can be the straight-run pitch from reduced pressure distillation process, can also be the oxidized bitumen from pitch oxidation technology.
Processing used in the present invention back catalytically cracked oil and handle the back ethylene bottom oil, be the fragrance that respectively catalytically cracked oil and ethylene bottom oil obtained through underpressure distillation part greater than 50m%, the cut of 60～80m% preferably.
The hybrid mode of PetroChina Company Limited. of the present invention pitch and blending component can be a static mixer, can also be that mechanical stirring or strength stir.
Major advantage of the present invention is that production method is simple to operate, and the asphalt for high grade road aging of product performance of production is improved significantly, and 15 ℃ of ductilities are greater than 100cm behind the Thin Film Oven Test TFOT.The method that this invention provided can will be worth the asphalt for high grade road product that lower petroleum pitch changes into high added value.
Below in conjunction with example method provided by the invention is given further instruction.
Used de-oiled asphalt, vacuum residuum and catalytically cracked oil in example and the Comparative Examples, all be taken from Zhenhai Refining ﹠ Chemical Co. Ltd. of China PetroChemical Corporation, ethylene bottom oil and solvent treatment are extracted oil out and all are taken from Maoming petrochemical corporation (complex) of China PetroChemical Corporation.The main character of de-oiled asphalt and blending component is listed in table 1 and table 2 respectively, and the data in example and the Comparative Examples are listed in table 3, table 4, table 5, and pitch specification index (GB/T 15180-94) is listed in table 6.Four components and carbon residue are analyzed according to SH/T0509-92 and SH/T0170-92 respectively.
Example 1
Getting softening temperature is that 73.8 ℃, 25 ℃ penetration degrees are 6 de-oiled asphalt A 315g, handling back fragrance part through underpressure distillation is the catalytically cracked oil 185g of 62.0m%, the weight ratio of de-oiled asphalt and blending component 1.7: 1, behind the static mixer thorough mixing, 25 ℃ of penetration degrees of asphaltic products. of producing are 65, and every index meets AH-70 among the GB/T 15180-94
#The asphalt for high grade road standard, and after the thin film oven weathering test 15 ℃ of ductilities greater than 150cm.The results are shown in table 3.
Example 2
Getting softening temperature is that 73.8 ℃, 25 ℃ penetration degrees are 6 de-oiled asphalt A 305g, handling back fragrance part through underpressure distillation is the catalytically cracked oil 195g of 62.0m%, press the weight ratio 1.6: 1 of de-oiled asphalt and blending component, behind the static mixer thorough mixing, 25 ℃ of penetration degrees of asphaltic products. of producing are 75, and every index meets AH-70 among the GB/T 15180-94
#The asphalt for high grade road standard, and after the thin film oven weathering test 15 ℃ of ductilities greater than 150cm.The results are shown in table 3.
Example 3
Getting softening temperature is that 73.8 ℃, 25 ℃ penetration degrees are 6 de-oiled asphalt A 295g, handling back fragrance part through underpressure distillation is the catalytically cracked oil 205g of 62.0m%, press the weight ratio 1.4: 1 of de-oiled asphalt and blending component, behind the static mixer thorough mixing, 25 ℃ of penetration degrees of asphaltic products. of producing are 86, and every index meets AH-90 among the GB/T 15180-94
#The asphalt for high grade road standard, and after the thin film oven weathering test 15 ℃ of ductilities greater than 150cm.The results are shown in table 4.
Example 4
Getting softening temperature is that 73.8 ℃, 25 ℃ penetration degrees are 6 de-oiled asphalt A 430g, handling back fragrance part through underpressure distillation is the ethylene bottom oil 70g of 78.7m%, the weight ratio of de-oiled asphalt and blending component 6.1: 1, behind the static mixer thorough mixing, 25 ℃ of penetration degrees of asphaltic products. of producing are 64, and every index meets AH-70 among the GB/T 15180-94
#The asphalt for high grade road standard, and 15 ℃ of ductilities are 120cm after the thin film oven weathering test.The results are shown in table 4.
Example 5
Getting softening temperature is that 73.8 ℃, 25 ℃ penetration degrees are 6 de-oiled asphalt A 200g, fragrance part is the vacuum residuum B 300g of 53.1m%, the weight ratio of de-oiled asphalt and blending component 0.7: 1, behind the mechanical stirring thorough mixing, 25 ℃ of penetration degrees of asphaltic products. of producing are 81, and every index meets AH-90 among the GB/T 15180-94
#The asphalt for high grade road standard, and after the thin film oven weathering test 15 ℃ of ductilities greater than 100cm.The results are shown in table 4.
Example 6
Getting softening temperature is that 70.8 ℃, 25 ℃ penetration degrees are 9 de-oiled asphalt B 265g, fragrance part is the vacuum residuum A 235g of 51.2m%, the weight ratio of de-oiled asphalt and blending component 1.1: 1, behind strength stirring thorough mixing, 25 ℃ of penetration degrees of asphaltic products. of producing are 76, and every index meets AH-70 among the GB/T 15180-94
#The asphalt for high grade road standard, and after the thin film oven weathering test 15 ℃ of ductilities greater than 150cm.The results are shown in table 5.
Example 7
Getting softening temperature is that 73.8 ℃, 25 ℃ penetration degrees are 6 de-oiled asphalt A 375g, fragrance part is extracted oily 125g out for the solvent treatment of 71.1m%, the weight ratio of de-oiled asphalt and blending component 3.0: 1, behind the static mixer thorough mixing, 25 ℃ of penetration degrees of asphaltic products. of producing are 75, and every index meets AH-70 among the GB/T15180-94
#The asphalt for high grade road standard, and after the thin film oven weathering test 15 ℃ of ductilities greater than 150cm.The results are shown in table 5.
Comparative Examples 1
Compare with example 2, de-oiled asphalt is identical, blending component difference.Getting softening temperature is that 73.8 ℃, 25 ℃ penetration degrees are 6 de-oiled asphalt A 355g, fragrance part is the full cut 145g of catalytically cracked oil of 45.1m%, the weight ratio of de-oiled asphalt and blending component 2.4: 1, behind the static mixer thorough mixing, 25 ℃ of penetration degrees of asphaltic products. of producing are 80, but mass loss is 1.43% after the thin film oven weathering test, penetration ratio is 36%, particularly 15 ℃ of ductilities 19cm only.The results are shown in table 3.
Comparative Examples 2
Compare with example 2, the de-oiled asphalt difference, the blending component is identical.Getting softening temperature is that 53.0 ℃, 25 ℃ penetration degrees are 50 de-oiled asphalt C 460g, handling back fragrance part through underpressure distillation is the catalytically cracked oil 40g of 62.0m%, the weight ratio of de-oiled asphalt and blending component 11.5: 1, behind the static mixer thorough mixing, 25 ℃ of penetration degrees of asphaltic products. of producing are 74, and every index meets AH-70 among the GB/T 15180-94
#Asphalt for high grade road standard, but 15 ℃ of ductilities 27cm only after the thin film oven weathering test.The results are shown in table 3.
Comparative Examples 3
Compare with example 5, de-oiled asphalt is identical, blending component difference.Getting softening temperature is that 53.0 ℃, 25 ℃ penetration degrees are 50 de-oiled asphalt A 185g, fragrance part is the vacuum residuum C 315g of 44.5m%, the weight ratio of de-oiled asphalt and blending component 0.6: 1, behind the mechanical stirring thorough mixing, 25 ℃ of penetration degrees of asphaltic products. of producing are 81, and every index meets AH-90 among the GB/T 15180-94
#Asphalt for high grade road standard, but 15 ℃ of ductilities 60cm only after the thin film oven weathering test.The results are shown in table 4.
Table 1
| The de-oiled asphalt numbering | ????A | ????B | ????C |
| Penetration degree (25 ℃), 1/10mm softening temperature (ring and ball method), ℃ ductility (15 ℃), cm four components, saturated part of fragrance part gum asphalt of m% | ????6 ????73.8 ????0 ????5.3 ????42.6 ????42.5 ????9.6 | ????9 ????70.8 ????0.5 ????3.6 ????49.7 ????34.4 ????12.3 | ????50 ????53.0 ????＞150 ????12.4 ????42.8 ????36.7 ????8.1 |
Table 2
| The blending component | Density (20 ℃) g/cm 3 | Viscosity (100 ℃) mm 2/s | Carbon residue m% | Four components, m% | |||
| Saturated part | Fragrance part | Colloid | Bituminous matter | ||||
| Tar solvent-extracted oil decompression residuum A decompression residuum B decompression residuum C after the full cut of slurry oil slurry oil is processed after processing | ?1.0628 ?1.0495 ?1.0440 ?1.0124 ?0.9914 ?1.0001 ?1.0011 | ?21.55 ?16.50 ?2.51 ?24.27 ?38.14 ?647.76 ?630.51 | ?4.3 ?7.8 ?3.4 ?2.3 ?17.4 ?18.7 ?15.9 | ????22.7 ????39.4 ????1.9 ????17.7 ????24.4 ????17.9 ????26.2 | ????62.0 ????45.1 ????78.7 ????71.1 ????51.2 ????53.1 ????44.5 | ????15.3 ????13.6 ????18.6 ????9.1 ????19.9 ????22.8 ????23.5 | ????- ????1.9 ????0.8 ????2.1 ????4.5 ????6.2 ????5.8 |
Table 3
| Numbering | Example 1 | Example 2 | Comparative Examples 1 | Comparative Examples 2 |
| De-oiled asphalt blending component de-oiled asphalt/blending component, m/m penetration degree (25 ℃), 1/10mm softening temperature (ring and ball method), ℃ ductility (15 ℃), (163 ℃ of cm Thin Film Oven Test TFOTs, 5hr) mass loss, the % penetration ratio, % ductility (25 ℃), cm ductility (15 ℃), cm | Slurry oil 1.7: 1 65 47.2＞150 0.16 60.0＞150＞150 after A processes | Slurry oil 1.6: 1 75 47.8＞150 0.16 60.0＞150＞150 after A processes | The full cut of A slurry oil 2.4: 1 80 45.5＞150 1.43 36.0＞150 19 | Slurry oil 11.5: 1 74 49.0＞150 0.07 56.8＞150 27 after C processes |
Table 4
| Numbering | Example 3 | Example 4 | Example 5 | Comparative Examples 3 |
| De-oiled asphalt blending component de-oiled asphalt/blending component, m/m penetration degree (25 ℃), 1/10mm softening temperature (ring and ball method), ℃ ductility (15 ℃), (163 ℃ of cm Thin Film Oven Test TFOTs, 5hr) mass loss, the % penetration ratio, % ductility (25 ℃), cm ductility (15 ℃), cm | Slurry oil 1.4: 1 86 45.1＞150 0.16 59.3＞150＞150 after A processes | Tar 6.1: 1 64 49.3＞150 0.13 61.3＞150 120 after A processes | A decompression residuum B 0.7: 1 81 48.6＞150-0.13 65.0＞150＞100 | A decompression residuum C 0.6: 1 81 46.4＞150-0.15 63.0＞150 60 |
Table 5
| Numbering | Example 6 | Example 7 |
| De-oiled asphalt blending component de-oiled asphalt/blending component, m/m penetration degree (25 ℃), 1/10mm softening temperature (ring and ball method), ℃ ductility (15 ℃), (163 ℃ of cm Thin Film Oven Test TFOTs, 5hr) mass loss, the % penetration ratio, % ductility (25 ℃), cm ductility (15 ℃), cm | B decompression residuum A 1.1: 1 76 46.1＞150-0.11 71.1＞150＞150 | A solvent-extracted oil 3.0: 1 75 49.1＞150 0.16 65.3＞150＞150 |
Table 6
| The pitch trade mark | ????AH-70 # | ????AH-90 # |
| (25 ℃ of penetration degrees, 100g, 5s), 1/10mm softening temperature (ring and ball method), (15 ℃ of ℃ ductilities, 5cm/min), (163 ℃ of cm Thin Film Oven Test TFOTs, 5hr) mass loss, the % penetration ratio, % ductility (25 ℃), cm ductility (15 ℃), cm | 61～80 44～54 ≮ 100 ≯ 0.8 ≮ 55 ≮ 50 reports | 81～100 42～52 ≮ 100 ≯ 1.0 ≮ 50 ≮ 75 reports |
Claims (7)
1, a kind of method for producing road asphalt that improves aging resistance, it is characterized in that be raw material with 60～90 ℃ of softening temperatures, 25 ℃ of penetration degree less than 40 petroleum pitch, with fragrance part greater than 50m% be selected from handle the back catalytically cracked oil, handle the back ethylene bottom oil, one or more mixture that solvent treatment is extracted out in oil, the vacuum residuum is the blending component, press the weight ratio 0.5～12.0: 1 of petroleum pitch and blending component, with the two thorough mixing.
2, by the described method of claim 1, the softening temperature that it is characterized in that petroleum pitch is 65～85 ℃, and 25 ℃ of penetration degrees are 2～30.
3, by claim 1 or 2 described methods, it is characterized in that used petroleum pitch can be the de-oiled asphalt from solvent deasphalting technology, also can be the straight-run pitch from reduced pressure distillation process, can also be the oxidized bitumen from pitch oxidation technology.
4, by the described method of claim 1, the fragrance that it is characterized in that concocting component part is 60～80m%.
5, by claim 1 or 4 described methods, it is characterized in that after the used processing catalytically cracked oil and handle the back ethylene bottom oil, be part to be the cut of 60～80m% with catalytically cracked oil and ethylene bottom oil through the fragrance that obtains after the underpressure distillation respectively.
6,, it is characterized in that the weight ratio of petroleum pitch and blending component is 1.0～6.0: 1 by the described method of claim 1.
7, by the described method of claim 1, it is characterized in that the hybrid mode of petroleum pitch and blending component, can be static mixer, can also be mechanical stirring or strength stir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98101507A CN1093154C (en) | 1998-04-07 | 1998-04-07 | Method for producing road asphalt with improved ageing resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98101507A CN1093154C (en) | 1998-04-07 | 1998-04-07 | Method for producing road asphalt with improved ageing resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1231308A true CN1231308A (en) | 1999-10-13 |
| CN1093154C CN1093154C (en) | 2002-10-23 |
Family
ID=5216745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98101507A Expired - Lifetime CN1093154C (en) | 1998-04-07 | 1998-04-07 | Method for producing road asphalt with improved ageing resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1093154C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839009A (en) * | 2012-09-18 | 2012-12-26 | 中国石油天然气股份有限公司 | Method for producing heavy traffic road asphalt by using super heavy oil |
| CN102839015A (en) * | 2012-09-18 | 2012-12-26 | 中国石油天然气股份有限公司 | Method for producing road asphalt through super heavy oil |
| CN103554926A (en) * | 2013-10-16 | 2014-02-05 | 中国石油化工股份有限公司 | Low-strength and high-grade road asphalt and preparation method thereof |
| CN104119846A (en) * | 2014-08-08 | 2014-10-29 | 青岛卓能嘉创工贸集团有限公司 | High-softening-point asphalt for drilling fluid, as well as preparation method and applications thereof |
| CN105623279A (en) * | 2014-11-03 | 2016-06-01 | 中国石油化工股份有限公司 | Method for preparing blended asphalt |
| CN105623700A (en) * | 2014-11-03 | 2016-06-01 | 中国石油化工股份有限公司 | Method for preparing oil slurry blended asphalt |
| CN108179017A (en) * | 2018-01-05 | 2018-06-19 | 黄河三角洲京博化工研究院有限公司 | A kind of reconciliation pitch and preparation method thereof |
| CN109608894A (en) * | 2018-12-04 | 2019-04-12 | 黄河三角洲京博化工研究院有限公司 | No. 50 A grades of bi tumenf orr oads of one kind and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06116499A (en) * | 1992-10-06 | 1994-04-26 | Nippon Oil Co Ltd | Production of paving asphalt |
| CN1037274C (en) * | 1994-08-23 | 1998-02-04 | 中国石化大庆石油化工总厂炼油厂 | Production process of petroleum bitumen oxidizing oil slurry from catalytically cracked heavy oil |
-
1998
- 1998-04-07 CN CN98101507A patent/CN1093154C/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839009A (en) * | 2012-09-18 | 2012-12-26 | 中国石油天然气股份有限公司 | Method for producing heavy traffic road asphalt by using super heavy oil |
| CN102839015A (en) * | 2012-09-18 | 2012-12-26 | 中国石油天然气股份有限公司 | Method for producing road asphalt through super heavy oil |
| CN102839015B (en) * | 2012-09-18 | 2014-10-15 | 中国石油天然气股份有限公司 | Method for producing road asphalt through super heavy oil |
| CN103554926A (en) * | 2013-10-16 | 2014-02-05 | 中国石油化工股份有限公司 | Low-strength and high-grade road asphalt and preparation method thereof |
| CN103554926B (en) * | 2013-10-16 | 2016-01-27 | 中国石油化工股份有限公司 | A kind of low grade asphalt for high grade road and preparation method thereof |
| CN104119846A (en) * | 2014-08-08 | 2014-10-29 | 青岛卓能嘉创工贸集团有限公司 | High-softening-point asphalt for drilling fluid, as well as preparation method and applications thereof |
| CN105623279A (en) * | 2014-11-03 | 2016-06-01 | 中国石油化工股份有限公司 | Method for preparing blended asphalt |
| CN105623700A (en) * | 2014-11-03 | 2016-06-01 | 中国石油化工股份有限公司 | Method for preparing oil slurry blended asphalt |
| CN105623279B (en) * | 2014-11-03 | 2018-04-10 | 中国石油化工股份有限公司 | A kind of preparation method of mediation pitch |
| CN105623700B (en) * | 2014-11-03 | 2018-06-19 | 中国石油化工股份有限公司 | The preparation method of slurry oil reconciliation pitch |
| CN108179017A (en) * | 2018-01-05 | 2018-06-19 | 黄河三角洲京博化工研究院有限公司 | A kind of reconciliation pitch and preparation method thereof |
| CN108179017B (en) * | 2018-01-05 | 2020-07-07 | 黄河三角洲京博化工研究院有限公司 | Blended asphalt and preparation method thereof |
| CN109608894A (en) * | 2018-12-04 | 2019-04-12 | 黄河三角洲京博化工研究院有限公司 | No. 50 A grades of bi tumenf orr oads of one kind and preparation method thereof |
| CN109608894B (en) * | 2018-12-04 | 2021-04-06 | 黄河三角洲京博化工研究院有限公司 | No. 50A-grade road petroleum asphalt and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1093154C (en) | 2002-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5308470A (en) | Non-carcinogenic asphalts and asphalt blending stocks | |
| CN101228252B (en) | high quality asphalt containing pitch and preparing method thereof | |
| CN1093154C (en) | Method for producing road asphalt with improved ageing resistance | |
| SU793407A3 (en) | Method of producing bituminous binder | |
| CN109535747B (en) | No. 30 hard road asphalt and preparation method thereof | |
| CN1508188A (en) | Modified asphalt and preparing method thereof | |
| CN1041739C (en) | Colour coatings for road and method for mfg. same | |
| CN1233721C (en) | Old road pitch modifying regenerant and preparing method thereof | |
| CN112430396A (en) | High-grade blended asphalt and preparation method thereof | |
| CN108179017A (en) | A kind of reconciliation pitch and preparation method thereof | |
| CN1022844C (en) | New technology for manufacturing high-value product by use of wax oil | |
| CN106118078A (en) | A kind of Colophonium warm mix modifying agent and preparation method thereof | |
| CN1226338C (en) | Stable modifying regenerant for recovered road asphalt and preparing method thereof | |
| Esfeh et al. | Properties of modified bitumen obtained from natural bitumen by adding pyrolysis fuel oil | |
| CN104711014A (en) | Hard asphalt 20# and preparation method thereof | |
| US2687989A (en) | Asphalt production | |
| CN109651830A (en) | A kind of asphalt mixed material modifier and preparation method thereof | |
| CN105778966A (en) | Raw materials and technological method for producing No. 50 hard asphalt with mixed crude of Venezuelan Boscan crude and Venezuelan Merey-16 crude | |
| RU2349625C1 (en) | Method of making road asphalt | |
| CN108219824A (en) | A kind of SBS modified pitch cosolvent and preparation method thereof | |
| JP4778670B2 (en) | Propane deasphalted asphalt and straight asphalt manufactured using the same | |
| CN1227328C (en) | Production method of ageing resistant road asphalt | |
| EP2673343A2 (en) | A process for improving aromaticity of heavy aromatic hydrocarbons | |
| CN109207182A (en) | A kind of method of deasphalted oil production road asphalt | |
| CN110845857B (en) | High-performance special SBS (styrene butadiene styrene) modified asphalt and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20021023 |