CN106810881A - A kind of graininess oil hard grades of bitumen and blending hard grades of bitumen and preparation method thereof - Google Patents
A kind of graininess oil hard grades of bitumen and blending hard grades of bitumen and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of graininess oil hard grades of bitumen, the graininess oil hard grades of bitumen contains fragrance point, resin and asphalt, on the basis of graininess oil hard grades of bitumen gross weight, the content of the fragrance point is 20-30 weight %, the content of the colloid is 30-40 weight %, the content of the asphalitine is 30-40 weight %, being shaped as the graininess oil hard grades of bitumen is hemispherical, a kind of blending hard grades of bitumen and preparation method thereof is further related to, the various performance parameters of blending hard grades of bitumen of the invention meet《Standard specification for construction and acceptance of highway asphalt pavement》(JTG F40-2004) is to No. 50 requirements of A grades of road asphalt.
Description
Technical field
The present invention relates to asphalt field, in particular it relates to a kind of graininess oil hard grades of bitumen and tune
Close hard grades of bitumen and preparation method thereof.
Background technology
With national economy healthy and rapid development, highway construction is very rapid, and China is annual newly-built and repairs
About 4 hundreds of millions tons of asphalt needed for road, about 24,000,000 tons of required pitch, but steamed by depressurizing
Evaporating the part road asphalt of deep drawing production can not but fully meet what Ministry of Communications promulgated for 2004《Highway is dripped
Blue or green pavement construction technical specification》In to the A grades of technical requirements of pitch, this is mainly by oil property system
About, most of crude oil in China belongs to low-sulfur paraffinic base.In general, such crude oil is difficult to produce high-quality
A grades of road asphalt of amount, thus the quality and quantity of China's road asphalt can not meet the market demand for a long time,
With a large amount of imports of imported crude oil particularly middle-eastern crude (being suitable as asphalt stock), high quality asphalt
Ratio is significantly improved (such as No. 90 A grades of pitches, No. 70 A grades of pitches).
Because current China's road is also facing to heavily loaded the problems such as car is more, speed is high, vehicle flowrate is big of overloading,
Easily there is rut in road surface, and serious danger coerces traffic safety, and No. 50 road asphalt needle penetrations are relatively low, soft
Change point higher, can effectively solve the problems, such as the rut of bituminous paving.But, oil refining enterprise is by often subtracting
Pressure distillation technique processing Middle East imported crude oil is directly produced No. 50 road asphalt difficulty also very greatly, and makes
The raw material of standby No. 50 road asphalts is also limited by existing raw material.Therefore, No. 50 A grades of road asphalts
Contradiction becomes increasingly conspicuous between increase in demand and supply shortage.
Therefore, a kind of No. 50 new road asphalts and its production method are badly in need of now.
The content of the invention
The invention aims to overcome that hard grades of bitumen needle penetration in the prior art is high, softening point is low and compared with
Defect prepared by hardly possible, there is provided a kind of graininess oil hard grades of bitumen and blending hard grades of bitumen and its preparation side
Method.
To achieve these goals, on the one hand, the invention provides a kind of graininess oil hard grades of bitumen,
The graininess oil hard grades of bitumen contains fragrance point, resin and asphalt, with graininess oil hard grades of bitumen
On the basis of gross weight, the content of the fragrance point is 20-30 weight %, and the content of the colloid is 30-40
Weight %, the content of the asphalitine is 30-40 weight %, the shape of the graininess oil hard grades of bitumen
Shape is hemispherical.
On the other hand, present invention also offers one kind blending hard grades of bitumen, the blending hard grades of bitumen contains firmly
Component pitch and soft component pitch, the hard component pitch are above-mentioned graininess oil hard grades of bitumen, institute
25 DEG C of needle penetrations for stating soft component pitch are 60-80 (1/10mm).
The third aspect, present invention also offers a kind of preparation method for concocting hard grades of bitumen, the method includes：
By hard component pitch and soft component mixing asphalt, wherein, the hard component pitch is above-mentioned graininess stone
Oily hard grades of bitumen, 25 DEG C of needle penetrations of the soft component pitch are 60-80 (1/10mm).
Fourth aspect, present invention also offers blending hard grades of bitumen prepared by the above method.
The various performance parameters of blending hard grades of bitumen of the invention meet《Asphalt highway construction technology
Specification》(JTG F40-2004) is to No. 50 requirements of A grades of road asphalt, and prepared blending
The needle penetration of hard grades of bitumen is substantially less than existing No. 70 A grades of road asphalts, and softening point is significantly higher than existing
No. 70 A grades of road asphalts.It is of the invention blending hard grades of bitumen by selecting suitable soft component pitch,
Its 25 DEG C of needle penetrations be 60-80 (1/10mm), and by the soft component pitch with prepare graininess oil
Hard grades of bitumen is concocted and is made blending hard grades of bitumen, can not only improve the softening of blending hard grades of bitumen
Point, can also reduce its needle penetration, and the preparation process is simple, it is easy to industrial applications.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
Specific embodiment of the invention is described in detail below.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
On the one hand, the invention provides a kind of graininess oil hard grades of bitumen, graininess oil hard drip
Green grass or young crops is described on the basis of graininess oil hard grades of bitumen gross weight containing fragrance point, resin and asphalt
The content of fragrance point is 20-30 weight %, and the content of the colloid is 30-40 weight %, the pitch
The content of matter is 30-40 weight %, and being shaped as the graininess oil hard grades of bitumen is hemispherical.
According to graininess oil hard grades of bitumen of the present invention, it is preferable that graininess oil hard grades of bitumen
Without saturation point, so as to softening of the graininess oil hard grades of bitumen with lower needle penetration and Geng Gao can be made
Point.
According to graininess oil hard grades of bitumen of the present invention, the preparation of the graininess oil hard grades of bitumen
Method can be included using revolution steel band drip shaping method, the revolution steel band drip shaping method：Will be from alkane
The hard de-oiled asphalt (DOA) of hydrocarbon deasphalting unit is discharged from solvent deasphalting unit stripper bottom of towe,
Standing degassing process is carried out into degassing tank after heat exchange, then 1.0-1.5MPa is boosted to bitumenpump,
Filtered by filter after heat exchange again, be delivered to comminutor, by the distributing device of comminutor by molten state
Hard de-oiled asphalt be scattered in uniform drop, be dropped on the steel band at the uniform velocity moving, through force cool down
After form hemispherical grain.Wherein, stripper operating condition can include：Pressure is 0.55-0.65MPa,
Column bottom temperature is 280-290 DEG C；The operating condition of comminutor can include：Feeding temperature >=230 DEG C, enter
Material pressure is 0.25-0.35MPa, distributing device temperature≤200 DEG C, cooling water temperature≤10 DEG C, particle discharging
Temperature≤40 DEG C.Wherein, comminutor is conventional comminutor.
Those skilled in the art knows that above-mentioned preparation process does not change the hard of alkane deasphalting unit
The composition and content of de-oiled asphalt, therefore, fragrance in the liquid hard de-oiled asphalt of alkane deasphalting unit
Point, in the content of colloid, asphalitine and saturation point and obtained graininess oil hard grades of bitumen.
The diameter of graininess oil hard grades of bitumen of the present invention can be with≤10mm, preferably 6-8mm.
25 DEG C of needle penetration≤5 (1/10mm) of graininess oil hard grades of bitumen of the present invention, softening point is
100-140 DEG C, solubility >=99.5%, ash content≤1%.
On the other hand, present invention also offers one kind blending hard grades of bitumen, the blending hard grades of bitumen contains firmly
Component pitch and soft component pitch, the hard component pitch are above-mentioned graininess oil hard grades of bitumen, institute
25 DEG C of needle penetrations for stating soft component pitch are 60-80 (1/10mm).
According to blending hard grades of bitumen of the present invention, wherein, with the gross weight of the blending hard grades of bitumen
On the basis of, the content of hard component pitch is 2-5 weight %, and the content of soft component pitch is 95-98 weight
% such that it is able to softening point is further improved on the basis of blending hard grades of bitumen quality requirement is met and is dropped
Low needle penetration.
According to blending hard grades of bitumen of the present invention, wherein, soft component pitch can be this area routine
Needle penetration be the soft component pitch of 60-80 (1/10mm), it is preferable that the ductility of soft component pitch is
10 DEG C of ductilities are not less than 40cm before thin film oven.
Blending hard grades of bitumen of the invention meets No. 50 all standards of hard road bitumen, for example
In the range of 40-60 (1/10mm), softening point is more than or equal to 49 DEG C to 25 DEG C of needle penetrations, and 15 DEG C of ductilities are big
In equal to 80cm, 10 DEG C of ductilities are more than or equal to 15cm etc..
The third aspect, present invention also offers a kind of preparation method for concocting hard grades of bitumen, the method includes：
By hard component pitch and soft component mixing asphalt, wherein, the hard component pitch is above-mentioned graininess stone
Oily hard grades of bitumen, 25 DEG C of needle penetrations of the soft component pitch are 60-80 (1/10mm).
In the present invention, hard component pitch is graininess oil hard grades of bitumen obtained above, the graininess stone
Oily hard grades of bitumen is shaped as hemispherical, and the present inventor has found under study for action, by hard grades of bitumen system
It is made hemispheric, it is possible to increase the softening point of hard grades of bitumen simultaneously reduces its needle penetration, further, since will
Hard grades of bitumen makes hemispherical, so as to be more beneficial for transporting and use.
According to method of the present invention, wherein it is preferred to, the ductility of the soft component pitch is film
10 DEG C of ductilities are not less than 40cm before baking oven.
In the present invention, on the basis of the gross weight of the blending hard grades of bitumen, the consumption of hard component pitch is
2-5 weight %, the consumption of soft component pitch is 95-98 weight % such that it is able to meeting blending hard drip
Softening point is further improved on the basis of blue or green quality requirement and needle penetration is reduced.
According to method of the present invention, wherein, the mode of the blending can mix for stirring, stirring
Rotating speed can for 300-400 turn/min.
According to method of the present invention, wherein, the condition of the blending is preferably included：Temperature is
140-160 DEG C, the time is 0.5-2h, it is highly preferred that temperature is 150-160 DEG C, the time is 0.5-1.5h,
So as to further improving softening point on the basis of blending hard grades of bitumen quality requirement is met and reducing
Needle penetration.
Fourth aspect, present invention also offers blending hard grades of bitumen prepared by the above method.
Blending hard grades of bitumen of the invention meets No. 50 all standards of hard road bitumen, for example
In the range of 40-60 (1/10mm), softening point is more than or equal to 49 DEG C to 25 DEG C of needle penetrations, and 15 DEG C of ductilities are big
In equal to 80cm, 10 DEG C of ductilities are more than or equal to 15cm etc..
Embodiment
Comminutor is purchased from Jiangsu, and the trade mark is CF type rotary-belt condensation granulators.
Preparation example 1
By the hard de-oiled asphalt from alkane deasphalting unit (with hard de-oiled asphalt gross weight as base
Standard, the content of fragrance point is 20 weight %, and the content of colloid is 40 weight %, and the content of asphalitine is
40 weight %) from the discharge of solvent deasphalting unit stripper bottom of towe, carried out into degassing tank after heat exchange quiet
Degassing process is put, then 1.2MPa is boosted to bitumenpump, then is filtered by filter after heat exchange,
Comminutor is delivered to, the hard de-oiled asphalt of molten state is scattered in uniformly by the distributing device of comminutor
Drop, is dropped on the steel band at the uniform velocity moving, and hemispherical grain is formed after forcing cooling.Wherein, vapour
Stripper operating condition can include：Pressure is 0.55MPa, and column bottom temperature is 280 DEG C；The behaviour of comminutor
The condition of work can include：Feeding temperature is 240 DEG C, and feed pressure is 0.30MPa, and distributing device temperature is
200 DEG C, cooling water temperature is 10 DEG C, and particle discharge temp is 40 DEG C, and hemispherical grain shape oil is obtained
Hard grades of bitumen, its a diameter of 8mm, 25 DEG C of needle penetrations are 1 (1/10mm), and softening point is 140 DEG C,
Solubility is 99.5%, and ash content is 1%.
Preparation example 2
By the hard de-oiled asphalt from alkane deasphalting unit (with hard de-oiled asphalt gross weight as base
Standard, the content of fragrance point is 25 weight %, and the content of colloid is 37 weight %, and the content of asphalitine is
38 weight %) from the discharge of solvent deasphalting unit stripper bottom of towe, carried out into degassing tank after heat exchange quiet
Degassing process is put, then 1.1MPa is boosted to bitumenpump, then is filtered by filter after heat exchange,
Comminutor is delivered to, the hard de-oiled asphalt of molten state is scattered in uniformly by the distributing device of comminutor
Drop, is dropped on the steel band at the uniform velocity moving, and hemispherical grain is formed after forcing cooling.Wherein, vapour
Stripper operating condition can include：Pressure is 0.55MPa, and column bottom temperature is 285 DEG C；The behaviour of comminutor
The condition of work can include：Feeding temperature is 235 DEG C, and feed pressure is 0.27MPa, and distributing device temperature is
200 DEG C, cooling water temperature is 10 DEG C, and particle discharge temp is 40 DEG C, and hemispherical grain shape oil is obtained
Hard grades of bitumen, its a diameter of 6mm, 25 DEG C of needle penetrations are 2 (1/10mm), and softening point is 120 DEG C,
Solubility is 99.5%, and ash content is 1%.
Preparation example 3
By the hard de-oiled asphalt from alkane deasphalting unit (with hard de-oiled asphalt gross weight as base
Standard, the content of fragrance point is 28 weight %, and the content of colloid is 36 weight %, and the content of asphalitine is
36 weight %) from the discharge of solvent deasphalting unit stripper bottom of towe, carried out into degassing tank after heat exchange quiet
Degassing process is put, then 1.05MPa is boosted to bitumenpump, then is filtered by filter after heat exchange,
Comminutor is delivered to, the hard de-oiled asphalt of molten state is scattered in uniformly by the distributing device of comminutor
Drop, is dropped on the steel band at the uniform velocity moving, and hemispherical grain is formed after forcing cooling.Wherein, vapour
Stripper operating condition can include：Pressure is 0.55MPa, and column bottom temperature is 290 DEG C；The behaviour of comminutor
The condition of work can include：Feeding temperature is 232 DEG C, and feed pressure is 0.25MPa, and distributing device temperature is
200 DEG C, cooling water temperature is 10 DEG C, and particle discharge temp is 40 DEG C, and hemispherical grain shape oil is obtained
Hard grades of bitumen, its a diameter of 7mm, 25 DEG C of needle penetrations are 3 (1/10mm), and softening point is 110 DEG C,
Solubility is 99.6%, and ash content is 1%.
Preparation example 4
Method according to preparation example 1 prepares hemispherical grain shape oil hard grades of bitumen, unlike, use
Hard de-oiled asphalt (on the basis of hard de-oiled asphalt gross weight, the content of fragrance point is 35 weight %,
The content of colloid is 45 weight %, and the content of asphalitine is 20 weight %) replace hard in preparation example 1
Matter de-oiled asphalt, is obtained hemispherical grain shape oil hard grades of bitumen, and its a diameter of 8mm, 25 DEG C of pins enter
It is 8 (1/10mm) to spend, and softening point is 95 DEG C, and solubility is 99.5%, and ash content is 1%.
Preparation example 5
Method according to preparation example 1 prepares hemispherical grain shape oil hard grades of bitumen, unlike, use
Hard de-oiled asphalt (on the basis of hard de-oiled asphalt gross weight, the content of fragrance point is 20 weight %,
The content of colloid is 30 weight %, and the content of asphalitine is 30 weight %, and the content of saturation point is 20 weights
Amount %) hard de-oiled asphalt in preparation example 1 is replaced, hemispherical grain shape oil hard grades of bitumen is obtained,
Its a diameter of 8mm, 25 DEG C of needle penetrations are 10 (1/10mm), and softening point is 85 DEG C, and solubility is 99.5%,
Ash content is 1%.
Embodiment 1
The present embodiment is used to illustrate blending hard grades of bitumen of the invention and preparation method thereof.
By No. 70 A grades of hemispherical grain shape oil hard grades of bitumen obtained in 250g preparation examples 1 and 9750g
Road asphalt (is purchased from Sinopec Donghai brand asphalt, the trade mark is No. 70 A grades of pitches, 25 DEG C of needle penetrations
Be 70 (1/10mm), 10 DEG C of ductilities are 50cm before thin film oven) be put into agitator 155 DEG C,
1h is stirred under 350 turns/min to be well mixed, and blending hard grades of bitumen is obtained.
Embodiment 2
The present embodiment is used to illustrate blending hard grades of bitumen of the invention and preparation method thereof.
By No. 70 A grades of hemispherical grain shape oil hard grades of bitumen obtained in 330g preparation examples 2 and 9670g
Road asphalt (is purchased from Sinopec Donghai brand asphalt, the trade mark is No. 70 A grades of pitches, 25 DEG C of needle penetrations
Be 70 (1/10mm), 10 DEG C of ductilities are 50cm before thin film oven) be put into agitator 155 DEG C,
0.8h is stirred under 350 turns/min to be well mixed, and blending hard grades of bitumen is obtained.
Embodiment 3
The present embodiment is used to illustrate blending hard grades of bitumen of the invention and preparation method thereof.
By No. 70 A grades of hemispherical grain shape oil hard grades of bitumen obtained in 400g preparation examples 3 and 9600g
Road asphalt (is purchased from Sinopec Donghai brand asphalt, the trade mark is No. 70 A grades of pitches, 25 DEG C of needle penetrations
Be 70 (1/10mm), 10 DEG C of ductilities are 50cm before thin film oven) be put into agitator 155 DEG C,
0.7h is stirred under 350 turns/min to be well mixed, and blending hard grades of bitumen is obtained.
Embodiment 4
The present embodiment is used to illustrate blending hard grades of bitumen of the invention and preparation method thereof.
Method according to embodiment 1 prepares blending hard grades of bitumen, unlike, the temperature of blending is 140
DEG C, mixing time is 2h, and blending hard grades of bitumen is obtained.
Embodiment 5
Method according to embodiment 1 prepares blending hard grades of bitumen, unlike, with the hemisphere of preparation example 5
Shape graininess oil hard grades of bitumen replaces the hemispherical grain shape oil hard grades of bitumen of preparation example 1, is obtained and adjusts
Close hard grades of bitumen.
Comparative example 1
Method blending according to embodiment 1 prepares hard grades of bitumen, unlike, with the hemisphere of preparation example 4
Shape graininess oil hard grades of bitumen replaces the hemispherical grain shape oil hard grades of bitumen of preparation example 1, is obtained and adjusts
Close hard grades of bitumen.
Test case
The performance parameter of the blending hard grades of bitumen of embodiment 1-5 and comparative example 1 is determined using following methods,
Specific method is as follows：
Needle penetration and penetration index PI are determined according to traffic ministerial standard T0604, according to traffic ministerial standard
T0606 determines softening point (ring and ball method), and flash-point (COC) is determined according to traffic ministerial standard T0611,
Ductility is determined according to traffic ministerial standard T0605, determining 60 DEG C of power according to traffic ministerial standard T0620 glues
Degree, determines paraffin content (way of distillation), according to traffic ministerial standard T0603 according to traffic ministerial standard T0615
Density is determined, solubility is determined according to traffic ministerial standard T0607, carried out according to traffic ministerial standard T0609
Thin film heating test.
Table 1
Be can be seen that by embodiment 1-5 compared with comparative example 1 by the data of table 1, embodiment 1-5
The various performance parameters of blending hard grades of bitumen meet《Standard specification for construction and acceptance of highway asphalt pavement》(JTG
F40-2004) to No. 50 requirements of A grades of road asphalt, especially, the blending of embodiment 1-5 is hard
The needle penetration of matter pitch is substantially less than comparative example 1, and softening point is significantly higher than comparative example 1.
The various performance parameters of blending hard grades of bitumen of the invention meet《Asphalt highway construction technology
Specification》(JTG F40-2004) is to No. 50 requirements of A grades of road asphalt, and prepared blending
The needle penetration of hard grades of bitumen is substantially less than existing No. 70 A grades of road asphalts, and softening point is significantly higher than existing
No. 70 A grades of road asphalts.It is of the invention blending hard grades of bitumen by selecting suitable soft component pitch,
Its 25 DEG C of needle penetrations be 60-80 (1/10mm), and by the soft component pitch with prepare graininess oil
Hard grades of bitumen is concocted and is made blending hard grades of bitumen, can not only improve the softening of blending hard grades of bitumen
Point, can also reduce its needle penetration, and the preparation process is simple, it is easy to industrial applications.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in range of the technology design of the invention, can be to technical side of the invention
Case carries out various simple variants, and these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique described in above-mentioned specific embodiment is special
Levy, in the case of reconcilable, can be combined by any suitable means, in order to avoid need not
The repetition wanted, the present invention is no longer separately illustrated to various possible combinations.
Additionally, can also be combined between a variety of implementation methods of the invention, as long as its
Without prejudice to thought of the invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of graininess oil hard grades of bitumen, it is characterised in that the graininess oil hard grades of bitumen contains
There are fragrance point, resin and asphalt, on the basis of graininess oil hard grades of bitumen gross weight, the fragrance
The content divided is 20-30 weight %, and the content of the colloid is 30-40 weight %, the asphalitine
Content is 30-40 weight %, and being shaped as the graininess oil hard grades of bitumen is hemispherical.
2. graininess oil hard grades of bitumen according to claim 1, wherein, the graininess oil
Hard grades of bitumen is without saturation point.
3. it is a kind of to concoct hard grades of bitumen, it is characterised in that the blending hard grades of bitumen contains hard component pitch
With soft component pitch, the hard component pitch is the graininess oil hard drip described in claim 1 or 2
Green grass or young crops, 25 DEG C of needle penetrations of the soft component pitch are 60-80 (1/10mm).
4. blending hard grades of bitumen according to claim 3, wherein, the soft component pitch prolongs
Spend for 10 DEG C of ductilities are not less than 40cm before thin film oven.
5. blending hard grades of bitumen according to claim 3, wherein, with the blending hard grades of bitumen
Gross weight on the basis of, the content of hard component pitch is 2-5 weight %, and the content of soft component pitch is
95-98 weight %.
6. it is a kind of concoct hard grades of bitumen preparation method, it is characterised in that the method includes：By hard group
Divide pitch and soft component mixing asphalt, wherein, the hard component pitch is described in claim 1 or 2
Graininess oil hard grades of bitumen, 25 DEG C of needle penetrations of the soft component pitch are 60-80 (1/10mm).
7. method according to claim 6, wherein, the ductility of the soft component pitch is film
10 DEG C of ductilities are not less than 40cm before baking oven.
8. method according to claim 6, wherein, the condition of the blending includes：Temperature is
140-160 DEG C, the time is 0.5-2h.
9. method according to claim 8, wherein, the condition of the blending includes：Temperature is
150-160 DEG C, the time is 0.5-1.5h.
10. the blending hard grades of bitumen that in claim 6-9 prepared by any one methods described.
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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 |
| CN112778780A (en) * | 2020-12-31 | 2021-05-11 | 亿虎控股有限公司 | Hard asphalt blended by soft components and production method thereof |
| CN116200206A (en) * | 2021-11-30 | 2023-06-02 | 中国石油天然气股份有限公司 | Petroleum high-viscosity hard component curing and forming process and device |
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