CN103865557A - Building asphalt preparation method - Google Patents
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- CN103865557A CN103865557A CN201210530054.XA CN201210530054A CN103865557A CN 103865557 A CN103865557 A CN 103865557A CN 201210530054 A CN201210530054 A CN 201210530054A CN 103865557 A CN103865557 A CN 103865557A
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Abstract
The present invention relates to a building asphalt preparation method. According to the building asphalt preparation method, one or the mixture of more of residual oil obtained in a crude oil distillation process, blended asphalt obtained in a blending process and deoiled asphalt obtained in a solvent deasphalting process is adopted as a base raw material, the base raw material is subjected to a cracking condensation reaction at a reaction temperature of 380-480 DEG C under an operation pressure of 0-0.1 Mpa under a residence time of 10-120 min in an upflow type visbreaking reaction tower, the obtained visbreaking product enters a reduced pressure fractionation tower to obtain components such as gasoline, kerosene, diesel fuel and lubricating oil, and the obtained tower bottom heavy oil is the building asphalt. According to the present invention, the method has characteristics of low production cost, low corrosion on equipment, reduced equipment use requirement, wide raw material source and flexible processing technology, wherein 10#, 30# and 40# building asphalts meeting the new standard of GB/T 494-2010 building petroleum asphalt can be prepared by adjusting process parameters.
Description
Technical field
The present invention relates to a kind of viscosity breaking technology and prepare the method for building asphalt, more specifically say a kind of and make basic material first cracking condensation reaction occur in viscosity breaking reaction tower by viscosity breaking technology, then viscosity breaking resultant is carried out to the method that vacuum fractionation is prepared building asphalt.
Background technology
Building asphalt is the pitch classification of consumption maximum except road bitumen, and it has, and penetration degree is little, softening temperature is high, adhesivity is good and the feature of good waterproof performance, mainly for the manufacture of waterproof roll and roofworks or underground waterproof heat insulation coating.Product is divided into three trades mark No. 10, No. 30, No. 40 by penetration degree, and wherein No. 10 building asphalts and No. 30 building asphalts are to use more kind.
Oxidation style is to produce one of method that building asphalt is conventional.As CN 1093394A first carries out solvent extraction to vacuum residuum, then to obtained high carbon residue heavily diasphaltene carry out oxide treatment, can obtain building petroleum asphalt No. 30, but consuming time long, need 30-32 hour; And for example CN 97121664 adopts H
3pO
4deng making catalyzer, basic asphalt is carried out to catalyzed oxidation, not only can improve speed of response, can also improve the temperature-sensitive performance of building asphalt.But oxidising process can produce the oxidized tail gas of a large amount of contaminate environment, need on anti-pollution measure, carry out larger investment.
Another kind of common method is polymer modification method.It is by add a large amount of high molecular polymers in pitch, makes polymkeric substance fully swelling in pitch, forms stable reticulated structure, thereby makes pitch have some characteristics of polymkeric substance, and its thermotolerance, temperature sensibility, elastic deformability are significantly increased.For example US 4868233, CN 101864182A, CN 1111567C, CN 97121664.9 be all adopt polymkeric substance basic asphalt is carried out single or composite modified, although can effectively improve pitch degree of gelation, obvious to the high and low temperature improved performance of building asphalt, but due to add-on more (being generally not less than 14w%), and expensive, cause high cost, make user beyond affordability.
Also having a kind of method is to adopt residual oil superheated vapour cracking condensation to prepare building asphalt (Jia Shengsheng, Wang Renan. building asphalt new process of production [J]. petroleum pitch, 1982,3:10 ~ 15), method is under superheated vapour exists, take residual oil or de-oiled asphalt as raw material, under temperature of reaction 400-415 ℃, condition of normal pressure, carry out superheated vapour cracking condensation reaction, this process can obtain building asphalt No. 10.Prepare building asphalt with respect to oxidation style, the advantage of the method is not exhale pernicious gases, and can significantly reduce the pollution to atmosphere.Polymer modification legal system is for building asphalt relatively, and the advantage of the method is not add any polymer modifiers, and production cost can significantly reduce.But also there are some defects in the method, first be severe reaction conditions, owing to adopting superheated vapour stripping, make the character of building asphalt be subject to the impact of superheated vapour amount larger, in temperature of reaction and constant situation of reaction times, the increase of water vapor consumption has a strong impact on the ductility of building asphalt, and the consumption of water vapor is subject to the impact of raw material also very large simultaneously, need be according to the consumption of the how many corresponding change water vapors of the oleaginousness of raw material.Secondly, less by the softening temperature index degree more than needed of the method gained building asphalt, the highest yield of building asphalt only reaches 63%.
The patent of CN201110315371.5 provides a kind of method that improves low blacktop studies on asphaltene content.The method is take residual oil or de-oiled asphalt as raw material, make raw material, in thermally splitting separation column, heat cracking reaction occur, asphalt content in low blacktop can be brought up to 5% ~ 20% by 0.1% ~ 0.5%, the main purpose of its invention is to adopt low blacktop to produce the problem of SBS modifying asphalt difficulty in order to optimize pitch composition, to solve.Because residue at the bottom of the oily tower obtaining through vacuum fractionation of thermally splitting generation is the blend component of producing matrix pitch used for modifying asphalt, and the softening temperature of matrix pitch and extensibility should meet the technical requirements of bi tumenf orr oad, this has just limited the degree of depth that cracking reaction occurs raw material in thermally splitting separation column can not be excessive, this with prepare the desired processing condition of building asphalt by viscosity breaking technology and production object has notable difference.
Summary of the invention
The object of this invention is to provide a kind of preparation method of building asphalt, more specifically say a kind of and make basic material first cracking condensation reaction occur in viscosity breaking reaction tower by viscosity breaking technology, then viscosity breaking resultant is carried out to the method that vacuum fractionation is prepared building asphalt.The method had both overcome oxidizing process in prior art and had prepared the problems such as building asphalt generation oxidized tail gas and polymer modification high cost, complex technical process, had also overcome the problem of producing building asphalt processing condition harshness, product performance deficiency in prior art.
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
(1) basic material is first heated to 350 ℃ through preheating stove, then enter upflow visbreaking soaking drum, be 380-480 ℃ in temperature of reaction, system pressure is 0-0.1MPa, the residence time is under the operational condition of 10-120min, there is cracking condensation reaction in basic material, obtain viscosity breaking resultant in viscosity breaking reaction tower.
(2) viscosity breaking resultant enters vacuum fractionation tower again, its system pressure maintains 0.0133KPa ~ 13.3KPa, gold-plating exports whole gold-plating point temperature and is controlled at 390 ~ 500 ℃, fractionates out gasoline, kerosene, diesel oil and lubricating oil component, and at the bottom of the tower obtaining, heavy oil is building asphalt.
Above-mentioned basic material is one or more mixtures in crude distillation technique gained residual oil, solvent de-asphalting process gained de-oiled asphalt, Blending gained mediation pitch, it is characterized in that 25 ° of C penetration degrees are 20-200(1/10mm), press petroleum pitch four compound mensuration method NB/SH/T 0509-2010, gum level 35% ~ 65% in basic material, asphalt content is 0.1%-10%.
The above-mentioned preferred 400-450 ℃ of viscosity breaking tower interior reaction temperature, the preferred 0.01-0.05MPa of working pressure, preferred 20-90min of the residence time.
Preferred 0.0133KPa ~ the 6.65KPa of system pressure span of control of above-mentioned vacuum fractionation tower.
Press petroleum pitch four compound mensuration method NB/SH/T 0509-2010, gum level preferably 40% ~ 60% in above-mentioned basic material, asphalt content preferably 0.1% ~ 5%.
Compared with prior art, remarkable advantage of the present invention is:
(1) overcome oxidizing process in prior art and prepared the problems such as building asphalt generation oxidized tail gas and polymer modification high cost, complex technical process.
(2) when basic material, in viscosity breaking reaction tower, cracking condensation reaction occurs, without superheated vapour, reduce the corrosion to equipment, reduced the service requirements to equipment.
(3) high temperature performance of gained building asphalt is all improved, as the hot mastication point of 10# building asphalt can reach 102 ~ 118 ℃, low-temperature ductility can reach 2.1 ~ 3.0cm, has improved 2 ~ 18 ℃ with the building asphalt of same penetration degree rank than hot mastication point, and low-temperature ductility has improved 0.1 ~ 0.4cm; The yield of the building asphalt that viscosity breaking resultant obtains through vacuum fractionation is increased to 65% ~ 90%.
(4), according to customer need adjusting process parameter flexibly, can prepare No. 10, No. 30, No. 40 building asphalts that meet GB/T 494-2010 " building petroleum asphalt " new standard.
Embodiment
Embodiment 1
With gum level 51.7%, asphalt content 0.1%, 25 ℃ of penetration degrees are 200(1/10mm) vacuum residuum be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 380 ℃, working pressure is normal pressure, stop 120min, viscosity breaking resultant enters vacuum fractionation tower, system pressure is 0.0133KPa, it is 500 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 500 ℃ of towers of >, heavy oil yield is 65%, its character index meets No. 10 building asphalt standards (in table 1), No. 10 building petroleum asphalt technical requirementss are in same under Table 2().
Embodiment 2
With gum level 51.7%, asphalt content 0.1%, 25 ℃ of penetration degrees are 200(1/10mm) vacuum residuum be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 480 ℃, working pressure is 0.1MPa, stop 10min, viscosity breaking resultant enters vacuum fractionation tower, system pressure is 0.133KPa, it is 485 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 485 ℃ of towers of >, heavy oil yield is 71%, its character index meets No. 30 building asphalt standards (in table 1), No. 30 building petroleum asphalt technical requirementss are in same under Table 2().
Embodiment 3
With gum level 51.7%, asphalt content 0.1%, 25 ℃ of penetration degrees are 200(1/10mm) vacuum residuum be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 435 ℃, working pressure is 0.05MPa, stop 40min, viscosity breaking resultant enters vacuum fractionation tower, system pressure is 1.33KPa, it is 460 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 460 ℃ of towers of >, heavy oil yield is 82%, its character index meets No. 40 building asphalt standards (in table 1), No. 40 building petroleum asphalt technical requirementss are in same under Table 2().
Embodiment 4
With gum level 65%, asphalt content 0.12%, 25 ℃ of penetration degrees are 20(1/10mm) vacuum residuum be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 420 ℃, working pressure is normal pressure, stop 60min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 1.33KPa, and it is 460 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 460 ℃ of towers of >, heavy oil yield is 75.63%, and its character index meets No. 10 building asphalt standards (in table 1).
Embodiment 5
With gum level 65%, asphalt content 0.12%, 25 ℃ of penetration degrees are 20(1/10mm) vacuum residuum be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 430 ℃, working pressure is 0.01MPa, stop 40min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 1.33KPa, and it is 460 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 460 ℃ of towers of >, heavy oil yield is 78.51%, and its character index meets No. 30 building asphalt standards (in table 1).
Embodiment 6
With gum level 60.0%, asphalt content 0.45%, 25 ℃ of penetration degrees are 50(1/10mm) vacuum residuum be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 390 ℃, working pressure is 0.05MPa, stop 90min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 2.66KPa, and it is 450 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 450 ℃ of towers of >, heavy oil yield is 80.7%, and its character index meets No. 40 building asphalt standards (in table 1).
Embodiment 7
With gum level 58.5%, asphalt content 1.3%, 25 ℃ of penetration degrees are 77(1/10mm) vacuum residuum be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 430 ℃, working pressure is normal pressure, stop 60min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 0.133KPa, and it is 455 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 455 ℃ of towers of >, heavy oil yield is 70.7%, and its character index meets No. 10 building asphalt standards (in table 1).
Embodiment 8
With gum level 49.8%, asphalt content 0.84%, 25 ℃ of penetration degrees are 93(1/10mm) vacuum residuum be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 440 ℃, working pressure is 0.01MPa, stop 45min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 0.665KPa, and it is 435 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 435 ℃ of towers of >, heavy oil yield is 78.6%, and its character index meets No. 30 building asphalt standards (in table 1).
Embodiment 9
With gum level 35%, asphalt content 10%, 25 ℃ of penetration degrees are 105(1/10mm) vacuum residuum be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 400 ℃, working pressure is 0.05MPa, stop 40min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 1.33KPa, and it is 435 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 435 ℃ of towers of >, heavy oil yield is 85.9%, and its character index meets No. 40 building asphalt standards (in table 1).
Embodiment 10
With gum level 53.9%, asphalt content 0.27%, 25 ℃ of penetration degrees are 23(1/10mm) de-oiled asphalt be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 460 ℃, working pressure is 0.01MPa, stop 20min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 0.665KPa, and it is 450 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 450 ℃ of towers of >, heavy oil yield is 66.6%, and its character index meets No. 10 building asphalt standards (seeing continued 1).
Embodiment 11
With gum level 40%, asphalt content 9.32%, 25 ℃ of penetration degrees are 35(1/10mm) de-oiled asphalt be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 430 ℃, working pressure is 0.02MPa, stop 45min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 1.33KPa, and it is 430 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 430 ℃ of towers of >, heavy oil yield is 70.4%, and its character index meets No. 30 building asphalt standards (seeing continued 1).
Embodiment 12
With gum level 49.3%, asphalt content 5%, 25 ℃ of penetration degrees are 51(1/10mm) de-oiled asphalt be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 415 ℃, working pressure is 0.06MPa, stop 35min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 6.65KPa, and it is 400 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 400 ℃ of towers of >, heavy oil yield is 85.8%, and its character index meets No. 40 building asphalt standards (seeing continued 1).
Embodiment 13
With gum level 61.63%, asphalt content 1.69%, 25 ℃ of penetration degrees are 35(1/10mm) de-oiled asphalt be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 450 ℃, working pressure is normal pressure, stop 45min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 1.33KPa, and it is 430 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 430 ℃ of towers of >, heavy oil yield is 65%, and its character index meets No. 10 building asphalt standards (seeing continued 1).
Embodiment 14
With gum level 61.63%, asphalt content 1.69%, 25 ℃ of penetration degrees are 35(1/10mm) de-oiled asphalt be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 400 ℃, working pressure is 0.03MPa, stop 60min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 0.133KPa, and it is 460 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 460 ℃ of towers of >, heavy oil yield is 78.44%, and its character index meets No. 30 building asphalt standards (seeing continued 1).
Embodiment 15
With gum level 61.63%, asphalt content 1.69%, 25 ℃ of penetration degrees are 35(1/10mm) de-oiled asphalt be raw material, be preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 400 ℃, working pressure is 0.03MPa, stop 60min, viscosity breaking resultant enters vacuum fractionation tower, and system pressure is 2.66KPa, and it is 420 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 420 ℃ of towers of >, heavy oil yield is 84.66%, and its character index meets No. 40 building asphalt standards (seeing continued 1).
Embodiment 16
De-oiled asphalt raw material in residual oil raw material in embodiment 1 and embodiment 11 is mixed in 4: 6 ratios, obtaining 25 ℃ of penetration degrees is 99(1/10mm) pitch, its gum level is 51.1%, asphalt content 1.19%, this raw material is preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 440 ℃, working pressure is 0.01MPa, stop 30min, viscosity breaking resultant enters vacuum fractionation tower, system pressure is 1.33KPa, it is 420 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 420 ℃ of towers of >, heavy oil yield is 68%, its character index meets No. 10 building asphalt standards (seeing continued 1).
Embodiment 17
De-oiled asphalt raw material in residual oil raw material in embodiment 1 and embodiment 11 is mixed in 3: 7 ratios, obtaining 25 ℃ of penetration degrees is 75(1/10mm) pitch, its gum level is 50.7%, asphalt content 1.8%, this raw material is preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 420 ℃, working pressure is 0.05MPa, stop 40min, viscosity breaking resultant enters vacuum fractionation tower, system pressure is 2.66KPa, it is 410 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 410 ℃ of towers of >, heavy oil yield is 72.7%, its character index meets No. 30 building asphalt standards (seeing continued 1).
Embodiment 18
De-oiled asphalt raw material in residual oil raw material in embodiment 1 and embodiment 11 is mixed in 2: 8 ratios, obtaining 25 ℃ of penetration degrees is 53(1/10mm) pitch, its gum level is 51%, asphalt content 1.91%, this raw material is preheated to 350 ℃ through process furnace, then enter upflow visbreaking soaking drum, temperature of reaction keeps 400 ℃, working pressure is 0.1MPa, stop 50min, viscosity breaking resultant enters vacuum fractionation tower, system pressure is 6.65KPa, it is 395 ℃ that gold-plating exports whole gold-plating point temperature, at the bottom of 395 ℃ of towers of >, heavy oil yield is 90%, its character index meets No. 40 building asphalt standards (seeing continued 1).
The main character of table 1 building asphalt
The main character of continued 1 building asphalt
The technical requirements of table 2 building petroleum asphalt
Claims (5)
1. a preparation method for building asphalt, is characterized in that:
(1) basic material is first heated to 350 ℃ through preheating stove, then enter upflow visbreaking soaking drum, be 380-480 ℃ in temperature of reaction, system pressure is 0-0.1MPa, the residence time is under the operational condition of 10-120min, there is cracking condensation reaction in basic material, obtain viscosity breaking resultant in viscosity breaking reaction tower.
(2) viscosity breaking resultant enters vacuum fractionation tower again, its system pressure maintains 0.0133KPa ~ 13.3KPa, gold-plating exports whole gold-plating point temperature and is controlled at 390 ~ 500 ℃, fractionates out gasoline, kerosene, diesel oil and lubricating oil component, and at the bottom of the tower obtaining, heavy oil is building asphalt.
2. according to the preparation method of a kind of building asphalt claimed in claim 1, it is characterized in that temperature of reaction 400-450 ° of C of described viscosity breaking tower operational condition, working pressure 0.01-0.05MPa, residence time 20-90min.
3. according to the preparation method of a kind of building asphalt claimed in claim 1, it is characterized in that the system pressure span of control of described vacuum fractionation tower is 0.0133KPa ~ 6.65KPa.
4. according to the preparation method of a kind of building asphalt claimed in claim 1, it is characterized in that basic material is one or more mixtures in crude distillation technique gained residual oil, solvent de-asphalting process gained de-oiled asphalt, Blending gained mediation pitch, 25 ℃ of penetration degrees are 20-200(1/10mm), press petroleum pitch four compound mensuration method NB/SH/T0509-2010, gum level 35% ~ 65% in basic material, asphalt content is 0.1%-10%.
5. according to the preparation method of a kind of building asphalt claimed in claim 4, it is characterized in that in described basic material, gum level is 40% ~ 60% by petroleum pitch four compound mensuration method NB/SH/T 0509-2010, asphalt content is 0.1% ~ 5%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106317917A (en) * | 2016-08-12 | 2017-01-11 | 中国石油化工股份有限公司 | Building asphalt and preparing method thereof |
| CN108384253A (en) * | 2018-01-31 | 2018-08-10 | 中国石油天然气股份有限公司长庆石化分公司 | A kind of building asphalt prepared using hard de-oiled asphalt |
| CN114163826A (en) * | 2020-09-11 | 2022-03-11 | 中国石油化工股份有限公司 | Color-paved cementing material and preparation method and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106317917A (en) * | 2016-08-12 | 2017-01-11 | 中国石油化工股份有限公司 | Building asphalt and preparing method thereof |
| CN108384253A (en) * | 2018-01-31 | 2018-08-10 | 中国石油天然气股份有限公司长庆石化分公司 | A kind of building asphalt prepared using hard de-oiled asphalt |
| CN108384253B (en) * | 2018-01-31 | 2020-06-02 | 中国石油天然气股份有限公司长庆石化分公司 | Building asphalt prepared by hard deoiled asphalt |
| CN114163826A (en) * | 2020-09-11 | 2022-03-11 | 中国石油化工股份有限公司 | Color-paved cementing material and preparation method and application thereof |
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| Publication number | Publication date |
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| CN103865557B (en) | 2015-10-28 |
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