CN104513488B - Road asphalt modifier and modified pavement asphalt containing coal directly-liquefied residue and preparation method thereof - Google Patents
Road asphalt modifier and modified pavement asphalt containing coal directly-liquefied residue and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of road asphalt modifier containing coal directly-liquefied residue and modified pavement asphalt and preparation method thereof, coal directly-liquefied residue, petroleum heavy oil and polymer are sufficiently mixed at a temperature of higher than residue softening point, road asphalt modifier is made, again with matrix asphalt is full and uniform at low temperature mixes, obtain modified pavement asphalt.The road asphalt modifier is cheap, enables the utilization that coal directly-liquefied residue is effective, economic.
Description
Technical field
It is made the present invention relates to a kind of road asphalt modifier containing coal directly-liquefied residue, by the road asphalt modifier
Modified pavement asphalt and their preparation method.
Background technology
It is how that coal directly-liquefied residue is efficient and rational using the bottleneck for being the current direct coal liquefaction technology development of restriction, open
The utilization technology of the economical rationality of coal directly-liquefied residue is sent out, resource can be not only made full use of, avoid the waste of precious resources, subtract
Few influence brought to environment, and the economy of direct coal liquefaction process can be effectively improved, promote direct coal liquefaction technology
Development.
Trinidad Lake Asphalt（TLA）There are some unique modified effects as natural road asphalt modifier, permitted
More developed countries are used on the road surface of high-grade highway.In recent years, TLA modified pitch is on some high-grade highways of China
（Such as airfield runway, highway, bridge pavement）Also begin to use.But due to TLA resource-constraineds, price is higher, and
Addition is generally bigger, causes use range to be very limited.TLA bitumen modifying agent is higher by relative molecular weight
Bitumen and high dispersive mineral matter composition.The pitch contained in coal directly-liquefied residue drips from composition with TLA lakes
Green grass or young crops has certain similitude, is hopeful after some are handled, and substitutes lake asphalt and changes as a kind of new road asphalt
Property agent.
CN1827697A discloses a kind of road asphalt modifier and its application process, and this method is directly by coal liquefaction residue
Mixed after crushing in the range of 100-250 DEG C by 5-30% weight ratio with road asphalt.The technology is directly residual with DCL/Direct coal liquefaction
Slag is as road asphalt modifier, addition and the performance of modified pitch and source and the property relation of coal directly-liquefied residue
Closely, it is poor to modulate flexibility；In addition, the sensitiveness that the ductility that more important point is modified pitch varies with temperature
By force, ductility loss is serious under low temperature, causes pitch embrittlement, cryogenic property is bad, poor with the modified effect of TLA asphalt modifiers
Away from bigger, it is difficult to meet pavement performance requirement.
CN101161778B discloses a kind of method for preparing modified pitch, and this method is similar to CN1827697A, improves
Only it is to mix the coal directly-liquefied residue of molten state with matrix pitch at 150-280 DEG C.The problem of this method, is to mix
Higher temperature is undergone during conjunction, easily causes matrix pitch aging, and the temperature sensitivity of modified matrix pitch still compares
Difference.
CN101863637B discloses a kind of paving asphalt concrete additive, by being added in coal directly-liquefied residue
Appropriate plasticiser（For the 5-20% of coal directly-liquefied residue gross weight）, rubber powder（For coal directly-liquefied residue gross weight 5-
15%）, coupling agent（For coal directly-liquefied residue gross weight 0.02-0.1%）And dispersant（For coal directly-liquefied residue gross weight
0.05-0.3%）Mixed at high speed 10 minutes is carried out at 140-165 DEG C, road asphalt outer-penetrating agent is prepared, then outer mixes this
Agent substitutes 10-40% conventional substrate pitch, among the preparation of bituminous concrete.Outer-penetrating agent composition prepared by this method is answered
Miscellaneous, residue addition is big, and mix temperature is low, and it is difficult uniformly to be mixed with rubber powder to make liquefied residue, in outer-penetrating agent easily
Cause to isolate split-phase problem.
CN101875789B discloses a kind of method that coal directly-liquefied residue prepares modified pitch, direct with 70-80% coals
Liquefied residue, 15-30% oil contents（For phthalate, fatty hydrocarbon ils, aromatic naphtha, turpentine oil, trimellitate etc.）With 5-
10% colloid（For rosin resin, thermoplastic phenolic resin, the Petropols of carbon 5 or the Petropols of carbon 9 etc.）Mixed in 90-160 DEG C
Close, directly prepare modified pitch.The outstanding problem of this method is that the same temperature sensitivity of the modified pitch being prepared is poor, low
The lower fragility of temperature is strong.
As can be seen here, the modified pitch that prior art is directly prepared by coal directly-liquefied residue is difficult to meet road performance
It is required that.
The content of the invention
It is an object of the invention to solve above-mentioned problem encountered in the prior art, improve coal directly-liquefied residue softening
The problems such as point is higher, black brittleness is big, there is provided a kind of cheap, resource relative abundance and reach to modifying road asphalt effect
Or the road asphalt modifier product more than TLA lake asphalt standards.
The present inventor is had found residual in DCL/Direct coal liquefaction by the research to coal directly-liquefied residue and road asphalt
Caused cheap inferior heavy oil content in Petroleum Production is added in slag（Such as catalytic cracked oil pulp, hydrocracking tail oil, furfural treatment
One or more in tapped oil, heavy deasphalted oil, delayed coking heavy distillate, decompression residuum etc.）And polymer（Such as benzene second
Alkene-butadiene-styrene block takes thing altogether（SBS）, butadiene-styrene rubber（SBR）, ethylene propylene diene rubber（EPDM）, nitrile rubber
（NBR）One or more in）, at relatively high temperatures（Higher than the temperature of liquefied residue softening point）It is well mixed, it can obtain
To road asphalt modifier, then again by above-mentioned road asphalt agent and matrix asphalt at relatively low temperature（It is low
In the temperature of liquefied residue softening point）It is sufficiently mixed, obtains modified pavement asphalt.It the advantage is that：On the one hand can protect
The mixing of road asphalt modifier and road asphalt that card is prepared by liquefied residue can be carried out at a lower temperature, prevent road
The high temperature ageing problem of pitch, ensure the ductility of modified pavement asphalt, on the other hand can also be according to the property of coal directly-liquefied residue
Matter difference, by adjusting formula and process conditions, the basic physical properties of asphalt modifier are flexibly controlled, to ensure final modified pitch
Performance, thus widened selection and the use range of coal directly-liquefied residue.
First aspect present invention provides a kind of road asphalt modifier, and the road asphalt modifier contains DCL/Direct coal liquefaction
Residue, petroleum heavy oil and polymer, relative to the coal directly-liquefied residue of 100 parts by weight, the content of petroleum heavy oil
For 10-150 parts by weight, the content of polymer is 10-70 parts by weight.
Second aspect of the present invention additionally provides a kind of preparation method of road asphalt modifier, and this method includes following step
Suddenly：
（1）Petroleum heavy oil is stirred at 30-200 DEG C with polymer；
（2）Coal directly-liquefied residue is added, is warming up to 150-250 DEG C, after carrying out high-speed stirred, is cooled down under stirring at low speed
Obtain road asphalt modifier.
Third aspect present invention additionally provides a kind of modified pavement asphalt, and the modified pavement asphalt contains matrix asphalt
And road asphalt modifier, it is characterised in that the road asphalt modifier is the modifying road asphalt of the above-mentioned offer of the present invention
Agent.
The softening point of road asphalt modifier provided by the invention containing coal directly-liquefied residue, needle penetration, viscosity and low
Warm ductility can compare favourably with the TLA modified pavement asphalts of better performances generally acknowledged at present, or even in low temperature ductility side
Face is also advantageous over TLA modified pavement asphalts, so that application of the coal directly-liquefied residue in road asphalt is achieved, thus
On the one hand the cost of the first-class road pitch of function admirable is reduced, is on the other hand also found for the application of coal directly-liquefied residue
New outlet, solves the high value added utilization of coal directly-liquefied residue and extensive Utilizing question, this is undoubtedly direct to coal
The development of liquefaction technology can produce great pushing effect.
Modified pavement asphalt preparation method provided by the invention, by elder generation at high temperature（It is soft higher than coal directly-liquefied residue
At a temperature of changing point）Coal directly-liquefied residue is mixed with the polymer of petroleum heavy oil and selectivity, prepares drip
Blue or green modifying agent, then it is to be mixed with matrix road asphalt under lower temperature, modified pavement asphalt is made.The side of this method one
Face can be carried out at relatively high temperatures when obtaining asphalt modifier, ensure liquefied residue be in liquid phase flow regime, easily with
Petroleum heavy oil and mixed with polymers are uniform, ensure that good dispersion effect；On the other hand, mixed with matrix road asphalt
During conjunction, carry out at a lower temperature, avoid due to mixing temperature it is too high caused by matrix pitch aging the problem of, and pitch
Middle volatile matter overflows the pollution problem to environment at high temperature.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
According to the first aspect of the invention, the invention provides a kind of modifying road asphalt containing coal directly-liquefied residue
Agent, the road asphalt modifier contains coal directly-liquefied residue, petroleum heavy oil and polymer, relative to 100 parts by weight
Coal directly-liquefied residue, the content of petroleum heavy oil is 10-150 parts by weight, and the content of polymer is 10-70 parts by weight.
Under preferable case, relative to the coal directly-liquefied residue of 100 parts by weight, the content of petroleum heavy oil is 12-120
Parts by weight, the content of polymer is 11-60 parts by weight；It is highly preferred that relative to the coal directly-liquefied residue of 100 parts by weight, stone
The content of oily heavy oil is 15-100 parts by weight, and the content of polymer is 12-58 parts by weight.
According to the present invention, the petroleum heavy oil can be heavy caused by Petroleum Production links, oil inferior.
These heavys, oil inferior cause processing difficulties because viscosity is high, asphalt content is big.
The content of heavy component of the boiling range not less than 350 DEG C is not less than 70 weights in the preferably petroleum heavy oil of the invention
Measure %, density（20℃）Not less than 0.90g/cm3, condensation point（Softening point）No more than 40 DEG C, 100 DEG C of kinematic viscosity are not more than
50mm2·s-1。
In the case of further preferably, the petroleum heavy oil is divided into catalytic cracked oil pulp, hydrocracking tail oil, furfural treatment
One or more in tapped oil, heavy deasphalted oil, delayed coking heavy distillate, decompression residuum.
According to the present invention, the coal directly-liquefied residue can be the coal obtained by existing various direct coal liquefaction technologies
Direct liquefaction residue.As it is known in the art, coal directly-liquefied residue refers to that coal liquefaction craft isolates the by-product after liquefaction oil
Product, have the property of similar pitch, are the atrament of solid under normal temperature, are mainly made up of inanimate matter and organic matter two parts,
Organic matter therein includes heavy coal liquids, bitumen and unconverted coal；Inanimate matter includes minerals in coal and additional
Catalyst.Heavy coal liquids, bitumen content in organic matter account for 50 weight % of level of residue or so, and unconverted coal is about
30 weight % or so are accounted for, ash content accounts for 20 weight % or so.
Under preferable case, heretofore described coal directly-liquefied residue be DCL/Direct coal liquefaction after be evaporated under reduced pressure accessory substance, its
Softening point is at 130-200 DEG C.Further preferred heretofore described coal directly-liquefied residue is to contain tetrahydrofuran soxhlet extraction
DDGS 40-55 weight % asphaltic substances.
The preferably polymer of the invention is thermoplastic high molecular weight hydrocarbons, such as thermoplastic elastomer (TPE).Enter
The preferably described polymer of one step is preferably that s-B-S block takes thing altogether（SBS）, styrene-isoprene-
Styrene block copolymer（SIS）, butadiene-styrene rubber（SBR）, neoprene（CR）, ethylene propylene diene rubber（EPDM）, nitrile rubber
（NBR）One or more in）.The structure and composition of above-mentioned polymer is not particularly limited, as long as meeting this area skill
The basic demand as modifying road asphalt composition known to art personnel.
A preferred embodiment of the invention, road asphalt modifier provided by the invention also help containing modification
Agent, the modified additive are the one or more in dispersant, coupling agent, stabilizer.The dispersant, coupling agent, stabilizer
Species and dosage be referred to prior art progress, the present invention will not be repeated here.
Although the well mixed obtained road asphalt modifier of said components there can be into property more preferable compared with prior art
Can, but under preferable case, according to the second aspect of the invention, the preparation method of road asphalt modifier provided by the invention includes
Following steps：
（1）Petroleum heavy oil is stirred at 30-200 DEG C with polymer；
（2）Coal directly-liquefied residue is added, is warming up to 150-250 DEG C, is cooled down after stirring and obtains modifying road asphalt
Agent.
Relative to the coal directly-liquefied residue of 100 parts by weight, the content of petroleum heavy oil is 10-150 parts by weight, polymerization
The content of thing is 10-70 parts by weight.Preferably, contain relative to the coal directly-liquefied residue of 100 parts by weight, petroleum heavy oil
Measure as 12-120 parts by weight, the content of polymer is 11-60 parts by weight；It is highly preferred that the direct liquid of coal relative to 100 parts by weight
Change residue, the content of petroleum heavy oil is 15-100 parts by weight, and the content of polymer is 12-58 parts by weight.
Description about coal directly-liquefied residue, petroleum heavy oil and type of polymer as described above, does not exist below
Repeat.
A preferred embodiment of the invention, step（1）Middle mixing speed is 30-800rpm, preferably 50-
400rpm；Mixing time is 1-15 hours, preferably 2-12 hours.
A preferred embodiment of the invention, step（2）Middle mixing speed is 1000-10000rpm, is preferably
2000-8000rpm；Mixing time is 20-150 minutes, preferably 30-120 minutes.
In the case of further preferably, step（1）It is stirred at 50-150 DEG C；Step（2）Carried out at 150-210 DEG C
Stirring.
Because usual road asphalt modifier is mixed in the form of particle of the particle diameter less than 5mm with matrix road asphalt, because
This, the method for road asphalt modifier preferably also includes crushing gained road asphalt modifier or extruding pelletization, and particle diameter is made
0.1-4.5mm preferred less than 5mm particle.
Crushing can be carried out using mode well known in the art, and the present invention repeats no more to this.
According to the third aspect of the invention we, present invention also offers a kind of modified pavement asphalt, the modified pavement asphalt to contain
There are matrix road asphalt and road asphalt modifier, it is characterised in that the road asphalt modifier is on provided by the invention
State road asphalt modifier.
The road asphalt modifier is preferably the particle that particle diameter is less than the preferred 0.1-4.5mm of 5mm.
Relative to the matrix road asphalt of 100 parts by weight, the content of road asphalt modifier is preferably 5-100 parts by weight；
It is highly preferred that relative to the matrix road asphalt of 100 parts by weight, the content of road asphalt modifier is 5-70 parts by weight；More enter
Preferably, relative to the matrix road asphalt of 100 parts by weight, the content of road asphalt modifier is 10-50 parts by weight to one step.
Preferably, the quality group of each component turns into modified pavement asphalt provided by the invention：Coal directly-liquefied residue 5-
25%, preferably 6-20%, further preferred 7-15%；Petroleum heavy oil content 0.5-20%, preferential 0.6-18%, further preferred 1-
15%；Polymer 0.5-5%, preferential 1-3.8%, further preferred 1.5-3.5%；Asphalt 50-94%, preferably 55-92%, enter one
Walk preferred 65-91%.
, can because the improvement of the present invention essentially consists in road asphalt modifier, therefore about the selection of matrix road asphalt
To be carried out with reference to prior art.For example, the matrix road asphalt is to meet road traffic technical requirements（Such as JTG F40-
2004）Bi tumenf orr oad, such as can be 50-110 asphalt.
According to the fourth aspect of the invention, the invention provides a kind of preparation method of modified pavement asphalt, this method bag
Include following steps：
1）The petroleum heavy oil content is stirred at 30-200 DEG C with the polymer with 30-800rpm；
2) coal directly-liquefied residue is added, is warming up to 150-250 DEG C, carrying out high-speed stirred with 1000-10000rpm obtains
Road asphalt modifier；
3）The road asphalt modifier and matrix road asphalt are stirred at 80-160 DEG C with 30-600rpm speed
It is well mixed.
Step（1）And step（2）The method for being referred to above-mentioned second aspect is carried out.
Wherein, step（3）In fully dispersed mixing 5-60 minutes are carried out with 50-500rpm at 100-150 DEG C, after cooling
Obtain modified pavement asphalt.
The preparation method for the modified pavement asphalt that fourth aspect present invention provides is first at relatively high temperatures（Higher than the direct liquid of coal
The temperature of change residue softening point, i.e., 150-250 DEG C）Coal directly-liquefied residue and petroleum heavy oil content, polymer are carried out abundant
Mixing, prepares road asphalt modifier, then at a lower temperature（Less than the softening point temperature of coal directly-liquefied residue, i.e.,
100-150℃）Above-mentioned modifying agent and matrix asphalt are sufficiently mixed, obtain modified pavement asphalt.
According to a kind of embodiment of the present invention, the preparation method of modified pavement asphalt provided by the invention is included first
By petroleum heavy oil content and polymer in 30-200 DEG C（It is preferred that 50-150 DEG C）Under be stirred（Such as 30-800r/min, preferably
50-400r/min）Premix certain time（Such as 1-15hr, preferably 2-12hr）, coal directly-liquefied residue is then added, is warming up to
150-250℃（It is preferred that 150-210 DEG C）, carry out high-speed stirred（Such as 1000-10000r/min, preferably 2000-8000r/min）
Mix certain time（Such as 20-150min, preferably 30-120min）After cool down, obtain road asphalt modifier；Again by above-mentioned road
Road asphalt modifier is crushed to less than 5mm, and the matrix asphalt with metering is in 80-160 DEG C（It is preferred that 100-150 DEG C）, 30-
600r/min（It is preferred that 50-500r/min）In the range of carry out fully dispersed mixing 5-60min（It is preferred that 15-45min）, after cooling
To modified pavement asphalt.
The present invention will be described in detail by way of examples below.In following examples, the method for testing of parameters
Use《Highway engineering pitch and Asphalt Mixture Experiment code》（JTG E20-2011）Defined standard method, softening point are adopted
With T0606-2011 bituminous softening-point tests（Ring and ball method）Measure, needle penetration uses T0604-2011 asphalt penetration test methods
Measure, ductility is measured using T0605-2011 bitumen ductility test methods, viscosity is tried using T0625-2011 pitches viscosity
Test（Bu Luoke Field viscosimeter methods）Method measures, and thin film oven experiment is using the heating examination of T0610-2011 asphalt rotating thin-films
Proved recipe method measures.
Following examples are used to further illustrate the present invention, but the invention is not restricted to following examples.It is following
In embodiment and comparative example, unless otherwise instructed, coal directly-liquefied residue is using the production of Shenhua Group coal liquifaction demonstration plant
Liquefied residue, the fundamental property of residue are：Softening point is 170 DEG C, and tetrahydrofuran soxhlet extraction solubles content is 51 weight %,
But the present invention is not limited to a kind of this residue of property；Bi tumenf orr oad used is given birth to by Qinhuangdao pitch factory of Zhong You petro-chemical corporations
Production, but the present invention is not limited to our company's product.
Embodiment 1
The embodiment is used to illustrate road asphalt modifier and modified pavement asphalt provided by the invention and preparation method thereof.
Raw material proportioning and the method for preparing 1000g road modified asphalts are as follows：
By 90g catalytic cracked oil pulps（Yanshan Petrochemical produces, ρ20℃=0.985g/ml, the amount more than 350 DEG C of fractions are 76 weights
% is measured, condensation point is 10.2 DEG C, and 100 DEG C of kinematic viscosity are 14.78mm2·s-1）With 20g SBR（SBR1712 Fujian petrochemical iy produced）
At 60 DEG C, it is stirred under 50rpm 2 hours, obtains the first mixture, 90g coal directly-liquefied residues is then added, 200
It is stirred 120 minutes with 8000rpm at DEG C, obtains the second mixture, road asphalt modifier 200g is obtained after cooling.
The above-mentioned road asphalt modifier is ground into particle of the diameter less than 5mm, is added to 800g 90# matrix roads
In pitch, it is stirred 45 minutes with 500rpm speed at 150 DEG C, obtains modified pavement asphalt.Modified pavement asphalt
Property is as shown in table 1 below.
Embodiment 2
The embodiment is used to illustrate road asphalt modifier and modified pavement asphalt provided by the invention and preparation method thereof.
Raw material proportioning and the method for preparing 1000g road modified asphalts are as follows：
By 10g catalytic cracked oil pulps（Yanshan Petrochemical produces, ρ20℃=0.985g/ml, the amount more than 350 DEG C of fractions are 76 weights
% is measured, condensation point is 10.2 DEG C, and 100 DEG C of kinematic viscosity are 14.78mm2·s-1）With 20g SBR（SBR1712 Fujian petrochemical iy produced）
At 50 DEG C, it is stirred under 800rpm 3 hours, obtains the first mixture, 70g coal directly-liquefied residues is then added, 180
It is stirred 50 minutes with 5000rpm at DEG C, obtains the second mixture, road asphalt modifier 100g is obtained after cooling.
The above-mentioned road asphalt modifier is crushed into particle of the diameter less than 5mm, is added to 900g 90# matrix road drip
In green grass or young crops, it is stirred 30 minutes with 200rpm speed at 100 DEG C, obtains modified pavement asphalt.The property of modified pavement asphalt
Matter is as shown in table 1 below.
Embodiment 3
The embodiment is used to illustrate road asphalt modifier and modified pavement asphalt provided by the invention and preparation method thereof.
Raw material proportioning and the method for preparing 1000g road modified asphalts are as follows：
By 140g catalytic cracked oil pulps（Yanshan Petrochemical produces, ρ20℃=0.985g/ml, the amount more than 350 DEG C of fractions are 76 weights
% is measured, condensation point is 10.2 DEG C, and 100 DEG C of kinematic viscosity are 14.78mm2·s-1）With 35g SBR（SBR1712 Fujian petrochemical iy produced）
At 80 DEG C, it is stirred under 100rpm 12 hours, obtains the first mixture, then adds 150g coal directly-liquefied residues,
It is stirred 90 minutes with 8000rpm at 220 DEG C, obtains the second mixture, road asphalt modifier 325g is obtained after cooling.
The above-mentioned road asphalt modifier is crushed into particle of the diameter less than 5mm, is added to 675g 90# matrix road drip
In green grass or young crops, it is stirred 40 minutes with 300rpm speed at 140 DEG C, obtains modified pavement asphalt.The property of modified pavement asphalt
Matter is as shown in table 1 below.
Embodiment 4
The embodiment is used to illustrate road asphalt modifier and modified pavement asphalt provided by the invention and preparation method thereof.
Raw material proportioning and the method for preparing 1000g road modified asphalts are as follows：
By 130g furfural extract oils（Yanshan Petrochemical produces, ρ20℃=0.989g/ml, the amount more than 350 DEG C of fractions are 80 weights
% is measured, condensation point is 20 DEG C, and 100 DEG C of kinematic viscosity are 35mm2·s-1；）With 30g SBS（SBS1301 Ba Ling petrochemical iy produceds）90
It is stirred at DEG C, under 200rpm 6 hours, obtains the first mixture, 100g coal directly-liquefied residues is then added, at 190 DEG C
Under be stirred 120 minutes with 8000rpm, obtain the second mixture, road asphalt modifier 260g obtained after cooling.
The above-mentioned road asphalt modifier is crushed into particle of the diameter less than 5mm, is added to 740g 90# matrix road drip
In green grass or young crops, it is stirred 40 minutes with 250rpm speed at 150 DEG C, obtains modified pavement asphalt.The property of modified pavement asphalt
Matter is as shown in table 1 below.
Embodiment 5
The embodiment is used to illustrate road asphalt modifier and modified pavement asphalt provided by the invention and preparation method thereof.
Raw material proportioning and the method for preparing 1000g road modified asphalts are as follows：
By 80g hydrocracking tail oils（Liaohe River petro-chemical corporation produces, ρ20℃=0.963g/ml, more than the amount 90 of 350 DEG C of fractions
Weight %, condensation point are 29 DEG C, and 100 DEG C of kinematic viscosity are 6.36mm2·s-1）With 20g EPDM（EPDM430 Dow Chemicals give birth to
Production）At 50 DEG C, it is stirred under 100rpm 8 hours, obtains the first mixture, then adds 90g coal directly-liquefied residues,
It is stirred 120 minutes with 8000rpm at 190 DEG C, obtains the second mixture, road asphalt modifier 190g is obtained after cooling.
The above-mentioned road asphalt modifier is crushed into particle of the diameter less than 5mm, is added to 810g 70# matrix road drip
In green grass or young crops, it is stirred 40 minutes with 250rpm speed at 150 DEG C, obtains modified pavement asphalt.The property of modified pavement asphalt
Matter is as shown in table 1 below.
Comparative example 1
The property of 90# asphalt is as shown in table 1 below.
Comparative example 2
Method according to embodiment 1 prepares modified pavement asphalt, unlike, road asphalt modifier is by identical weight part
TLA replace, i.e. 20 weight %TLA add 80 weight % 90# asphalt in, obtain modified pavement asphalt.Modified road drip
Blue or green property is as shown in table 1 below.
Comparative example 3
Method according to embodiment 1 prepares modified pavement asphalt, unlike, catalytic cracked oil pulp and SBS are by equivalent
Coal directly-liquefied residue replaces, i.e., without using catalytic cracked oil pulp and SBS in the preparation process of road asphalt modifier, coal is straight
Connect liquefied residue and be directly used as road asphalt agent, be i.e. the percentage of residue and asphalt is 20：80, obtain being modified road drip
It is blue or green.The property of modified pavement asphalt is as shown in table 1 below.
The modified pavement asphalt property of table 1
From the results shown in Table 1, using road asphalt modifier provided by the invention, matrix road asphalt can be made
Not only there is higher softening point, and there is relatively good low temperature（5 DEG C, 10 DEG C）Ductility.The modified of asphalt is imitated
Fruit reaches or better than expensive Trinidad Lake Asphalt（TLA）Modifying agent.Therefore the DCL/Direct coal liquefaction that the present invention obtains is residual
Dreg modifying agent, TLA modifying agent can be replaced, be laid for first-class road, and the road asphalt modifier price of the present invention is low
It is honest and clean, so as to substantially reduce the cost of road production.In addition, the road asphalt modifier of the present invention is by coal directly-liquefied residue system
It is standby, realize the efficient and rational innoxious use of coal liquefaction accessory substance.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (25)
1. a kind of road asphalt modifier, the road asphalt modifier contains coal directly-liquefied residue, petroleum heavy oil and gathered
Compound, relative to the coal directly-liquefied residue of 100 parts by weight, the content of petroleum heavy oil is 10-150 parts by weight, polymer
Content be 10-70 parts by weight；In the petroleum heavy oil boiling range not less than the content of 350 DEG C of heavy component be not less than
70 weight %, 20 DEG C of lower densities are not less than 0.90g/cm3, for condensation point no more than 40 DEG C, 100 DEG C of kinematic viscosity are not more than 50mm2·s-1。
2. modifying agent according to claim 1, wherein, the petroleum heavy oil is divided into catalytic cracked oil pulp, is hydrocracked
One or more in tail oil, furfural extract oil, heavy deasphalted oil, delayed coking heavy distillate, decompression residuum.
3. modifying agent according to claim 1, wherein, the coal directly-liquefied residue is to be evaporated under reduced pressure after DCL/Direct coal liquefaction
Accessory substance, its softening point is at 130-200 DEG C.
4. modifying agent according to claim 1, wherein, the polymer is thermoplastic high molecular weight hydrocarbons.
5. the modifying agent according to claim 1 or 4, wherein, the polymer is thermoplastic elastomer (TPE).
6. the modifying agent according to claim 1 or 4, wherein, the polymer is s-B-S block
One or more in copolymer, butadiene-styrene rubber, ethylene propylene diene rubber, nitrile rubber and ethylene-octene block copolymer.
7. a kind of preparation method of road asphalt modifier, this method comprise the following steps：
(1) petroleum heavy oil is stirred at 30-200 DEG C with polymer；
(2) coal directly-liquefied residue is added, is warming up to 150-250 DEG C, is cooled down after stirring and obtains road asphalt modifier；
Boiling range is not less than 70 weight %, at 20 DEG C not less than the content of 350 DEG C of heavy component in the petroleum heavy oil
Density is not less than 0.90g/cm3, for condensation point no more than 40 DEG C, 100 DEG C of kinematic viscosity are not more than 50mm2·s-1。
8. according to the method for claim 7, wherein, mixing speed is 30-800rpm, mixing time 1- in step (1)
15 hours.
9. according to the method for claim 8, wherein, mixing speed is 50-400rpm, mixing time 2- in step (1)
12 hours.
10. according to the method for claim 7, wherein, mixing speed is 1000-10000rpm in step (2), mixing time
For 20-150 minutes.
11. according to the method for claim 10, wherein, mixing speed is 2000-8000rpm in step (2), mixing time
For 30-120 minutes.
12. according to the method for claim 7, wherein, step (1) is stirred at 50-150 DEG C；Step (2) is in 150-
It is stirred at 210 DEG C.
13. the method according to claim 11, wherein, relative to the coal directly-liquefied residue of 100 parts by weight, petroleum heavy
The dosage of oil is 10-150 parts by weight；The dosage of polymer is 10-70 parts by weight.
14. the method according to claim 11, wherein, relative to the coal directly-liquefied residue of 100 parts by weight, petroleum heavy
The dosage of oil is 12-120 parts by weight；The dosage of polymer is 11-60 parts by weight.
15. the method according to claim 11, wherein, relative to the coal directly-liquefied residue of 100 parts by weight, petroleum heavy
The dosage of oil is 15-100 parts by weight；The dosage of polymer is 12-58 parts by weight.
16. according to the method described in any one in claim 7-15, wherein, the petroleum heavy oil is divided into cycle oil
Slurry, hydrocracking tail oil, furfural extract oil, heavy deasphalted oil, delayed coking heavy distillate, one kind in decompression residuum or
It is a variety of.
17. according to the method described in any one in claim 7-15, wherein, the coal directly-liquefied residue is the direct liquid of coal
Accessory substance is evaporated under reduced pressure after change, its softening point is at 130-200 DEG C.
18. according to the method described in any one in claim 7-15, wherein, the polymer is thermoplastic HMW
Hydrocarbon.
19. according to the method described in any one in claim 7-15, wherein, the polymer is thermoplastic elastomer (TPE).
20. according to the method described in any one in claim 7-15, wherein, the polymer is styrene-butadiene-benzene
Ethylene block copolymer, butadiene-styrene rubber, ethylene propylene diene rubber, nitrile rubber and one kind in ethylene-octene block copolymer or
It is a variety of.
21. a kind of modified pavement asphalt, the modified pavement asphalt contains matrix road asphalt and road asphalt modifier, its feature
It is, the road asphalt modifier is the road asphalt modifier any one of claim 1-6.
22. modified pavement asphalt according to claim 21, wherein, relative to the matrix road asphalt of 100 parts by weight, road
The content of road asphalt modifier is 5-100 parts by weight.
23. modified pavement asphalt according to claim 21, wherein, relative to the matrix road asphalt of 100 parts by weight, road
The content of road asphalt modifier is 5-70 parts by weight.
24. modified pavement asphalt according to claim 21, wherein, relative to the matrix road asphalt of 100 parts by weight, road
The content of road asphalt modifier is 10-50 parts by weight.
25. according to the modified pavement asphalt described in any one in claim 21-24, wherein, the matrix road asphalt is
Meet the 50-110 asphalt of road traffic technical requirements.
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| CN104744954B (en) * | 2015-04-17 | 2018-03-02 | 神华集团有限责任公司 | Anti-rut agent, the composition and its preparation method for preparing it |
| CN106396465B (en) * | 2016-08-30 | 2019-01-15 | 长安大学 | Outer-penetrating agent is improving the application in asphalt concrete elevated temperature property |
| CN106380105B (en) * | 2016-08-30 | 2018-08-17 | 长安大学 | A kind of bituminous concrete outer-penetrating agent and preparation method thereof |
| CN109593369B (en) * | 2017-09-30 | 2022-06-21 | 国家能源投资集团有限责任公司 | Road asphalt modifier, modified road asphalt, preparation method of modified road asphalt and asphalt mixture |
| CN109593370B (en) * | 2017-09-30 | 2022-06-21 | 国家能源投资集团有限责任公司 | Road asphalt modifier, modified road asphalt, preparation method of modified road asphalt and asphalt mixture |
| CN109593372B (en) * | 2017-09-30 | 2021-03-30 | 神华集团有限责任公司 | Road asphalt modifier, preparation method thereof and modified road asphalt |
| CN109593371B (en) * | 2017-09-30 | 2021-07-09 | 神华集团有限责任公司 | Road asphalt modifier, modified road asphalt, preparation method of modified road asphalt and asphalt mixture |
| CN109593368B (en) * | 2017-09-30 | 2022-04-19 | 国家能源投资集团有限责任公司 | Road asphalt modifier, modified road asphalt, preparation method of modified road asphalt and asphalt mixture |
| CN108517127B (en) * | 2018-04-26 | 2021-10-29 | 上海公路桥梁（集团）有限公司 | Coal direct liquefaction residue hard hot asphalt grouting material and preparation method thereof |
| CN110358317A (en) * | 2019-08-07 | 2019-10-22 | 交通运输部公路科学研究所 | Coal liquefaction residue is used as the preparation method of road asphalt modifier |
| CN113480861B (en) * | 2021-07-06 | 2022-08-05 | 太原理工大学 | Coal liquefaction residue modified asphalt based on particle size grading and preparation method thereof |
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| CN101875789B (en) * | 2010-07-05 | 2011-09-28 | 长安大学 | Coal directly-liquefied residue composite modified asphalt and preparation method thereof |
| CN102702758A (en) * | 2012-06-26 | 2012-10-03 | 宁波博汇石油化工有限公司 | Process for producing asphalt modifier |
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