CN105585273B - A kind of warm mix type Asphalt mixture anti-rut agent and preparation method thereof - Google Patents
A kind of warm mix type Asphalt mixture anti-rut agent and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of preparation method of warm mix type Asphalt mixture anti-rut agent, the anti-rut agent includes by mass percentage：Sulphur 50%~90%, pitch 4%~28%, special warm-mixing agent 2%~7%, shoddy 2%~10%, flyash 2%~5%.Preparation method includes：In advance using FT, halogen, aromatic naphtha as raw material, and catalyst is added, prepare a kind of special warm-mixing agent；Then material is delivered into kneader according to the feeding sequence of the special warm-mixing agent shoddy flyash sulphur of pitch, merged uniformly at a temperature of 70 DEG C~110 DEG C and be kneaded into dough, start pumped vacuum systems simultaneously, environmental protection treatment will be carried out after the gas collection of generation；Then start bottom discharge screw extruder and cutting granulating system, extruded, granulated, obtain warm mix type Asphalt mixture anti-rut agent of the present invention.Anti-rut agent of the present invention is added in asphalt, asphalt mixture mixing temperature can be effectively reduced and improve its anti-rut behavior, also well take into account low temperature ductility energy, the compatibility with pitch is good.
Description
Technical field
The present invention relates to a kind of warm mix type Asphalt mixture anti-rut agent and its preparation method and application.
Background technology
The reasons such as the heavy loading for increasingly increasing and transporting due to China's vehicle, bituminous paving occurs rut, gathers around bag etc.
Phenomenon is on the rise, especially prominent in south China hot area.The phenomenon has turned into the current bituminous highway of China mainly broken
One of bad form, has had a strong impact on bituminous paving traffic safety, service level and service life.
Early in 1900, people were just had started to sulphur come modified pitch, improve the anti-rut behavior of asphaltic road-mix surface course,
But because sulphur price is surging, and sulphur modified asphalt compound discharges H in process of production2The problem of sulfurous gas such as S, constrain
Sulfur modified bitumen technology develops.Phase early 1980s, Luo Kebang get companies of the U.S. have researched and produced sulphur base modifying agent
SEAM（sulphur extended asphalt modifier）, its is cheap, easy to use, although reduce H2S etc. contains
The generating capacity of sulphur gas, but the emission problem of pernicious gas do not solve thoroughly yet, constrains the application of the technical products.China pair
The research application of SEAM bituminous pavings is relatively later, until ability in 2000 has built SEAM Techniques of Experimental Road for Modified Asphalt in Tianjin, its
Experiment Road has also been built in Heilungkiang afterwards, and has achieved good effect, but it is generally smaller using scale, and research is also not enough
Unite, comprehensively.
Sulphur is applied in asphalt, is usually to be granulated, and forms graininess, more square when storing and using
Just.CN1402985A by 13%~30% sulphur, 3.0%~13% dispersant, remaining be water, be prepared by mixing into drusen,
Dispersant therein is the one or more in bones of the dead glue, natural gum, sodium metasilicate, lactoprotein.CN1639275A is that sulphur is heated
Melt to liquid, 0.25%~5% carbon black and at least about 0.08% pentyl acetate added in liquid sulfur, plasticizing sulphur is prepared into,
Then at least 10% pitch and 10% mineral fine etc. are added in plasticizing sulphur, is granulated by sieve plate.CN1303359A
What is introduced is the olefin by 93%~98% sulphur and 2%~7%, and 135 DEG C of highest is heated in carbon dioxide, is filled
Divide after hybrid reaction, be cooled to room temperature, crystalline forming to be not higher than 16 DEG C/min of speed, alkene therein is and styrene
The cyclic dimer and cyclic trimer of mixing.Above-mentioned patent is melted when producing drusen due to needing sulphur to heat
For liquid, operation temperature is higher, and sulphur can distil, and produces dense penetrating odor, is unfavorable for environment and health of human body.
CN101970348A is that sulphur-cake, slate sulphur, sulphur containing impurity etc. are dissolved in solvent, is isolated after impurity,
Make the solution cooling dissolved with sulphur, sulphur crystallization therein is separated out and is passed through sieve tray granulating and forming, profit is reclaimed in solvent evaporation
With.Solvent used has anhydrous ammonia, aqueous ammonia, liquid sulfur dioxide, carbon disulfide, dimethyl disulfide etc..The patent needs
Using substantial amounts of solvent, and solvent used is all the harmful substance with penetrating odor.
CN200410037665.6 presses down 50%~99.99% sulphur and 0%~49% carbon black, 0.01%~1% smog
Preparation, 0%~3% plasticizer mixing granulation, smog inhibitor therein are that stannonic acid zinc, plasticizer are n-butanol.
CN1678704A is by 60%~98% sulphur, 0.2%~15% carbon black, 1%~30% pitch（Or cyclic saturated hydrocarbon, ring-type insatiable hunger
With hydrocarbon, polycyclic saturated hydrocarbon, polycyclic unsaturated hydrocarbons, tar etc.）, 1%~33% mineral fine（Such as flying dust, silica material, ceramic clay
Deng）It is sufficiently mixed, the sulphur of the forms such as ingot, tabular, bulk, graininess, sheet is formed after cooling, available for asphalt
In.It is liquid that above-mentioned two patent, which is needed sulphur heating melting, and operation temperature is higher, can produce dense penetrating odor,
It is unfavorable for environment and health of human body.The high-temperature behavior of asphalt can only be improved, the low temperature anti-cracking performance of compound and anti-
Water Damages can need improve, and formed drusen it is also more crisp, transport and load and unload when be easily broken, due to
Friction between grain, can also produce more dust, not only environment is polluted, and easily suck staff, endanger
Evil health.
CN201210439792.3、CN201210439807.6、CN201210439808.0、CN201210439809.5、
The patents such as CN201210440324.8 with sulphur, pitch, shoddy, EVA, PE, butadiene-styrene rubber, hydroxide etc. for raw material, profit
With single screw rod or double screw extruder, asphalt mixture anti-rutting additive is prepared for, it is possible to increase the anti-car of asphalt
Rut performance.But without addition warm-mixing agent in formula, mix temperature is higher during products application, can produce more pernicious gas,
Make to apply and be restricted；In addition, not using kneader in preparation process, but single screw rod or double screw extruder are used,
Produced pernicious gas can not be collected and handled, and can influence that operating personnel's is healthy.
Attention with people to environmental protection, requirement is cleaned to oil product and is improved constantly, in natural gas purification and
Substantial amounts of sulphur byproduct is generated in petroleum refining process.How these by-product sulphur are effectively utilized, prepare pitch mixing
Expect anti-rutting additive, the outlet of a large amount of by-product sulphur on the one hand can be solved, while asphalt mixture anti-rutting can be improved again
Performance, and asphalt mixture mixing and forming temperature are reduced, so as to reduce pernicious gas generating capacity, mitigate pitch thermal cracking, have
Beneficial to environmental protection, as current hot issue.
The content of the invention
The rut phenomenon and the deficiencies in the prior art occurred for China's bituminous paving, the invention provides a kind of warm mix
Type Asphalt mixture anti-rut agent and preparation method thereof.The anti-rut agent can effectively improve the anti-rut behavior of bituminous paving, and
And take into account cryogenic property, reduction compound mix and forming temperature.Preparation process feed intake conveniently, pernicious gas can be collected
And processing, be conducive to environmental protection.
The warm mix type Asphalt mixture anti-rut agent of the present invention, in terms of anti-rut agent mass percent, including：
Sulphur 50%~90%,
Pitch 4%~27%,
Shoddy 2%~10%,
Flyash 2%~6%,
Special warm-mixing agent 2%~7%,
Special warm-mixing agent used takes the warm-mixing agent that particular form is voluntarily developed, the preparing raw material of the warm-mixing agent to be a kind of
Comprising FT, halogen, aromatic naphtha, and add catalyst.Wherein described FT be coal gasification after carry out synthetic reaction is obtained one again
Plant macromolecule alkane or a kind of macromolecule alkane that synthetic reaction is obtained is carried out by raw material of natural gas.Carbon number is 40
~130, preferably 60~130；Molecular weight is 562~1822, preferably 842~1822.
The consumption of described halogen is 0.3~0.5 times of FT molal quantitys.The weight ratio of FT and aromatic naphtha is (1~7):(7
~arbitrary proportion 1).
Described halogen is one kind in fluorine, chlorine, bromine, preferably chlorine or bromine.
Described aromatic naphtha is a kind of component rich in aromatic hydrocarbons, can be subtract four line tapped oil, furfural extract oil, phenol
Refined tapped oil, catalytic cracked oil pulp etc.；Arene content therein is 57%~78%, preferably 60%~75%.
Described catalyst is anhydrous AlCl3、FeCl3、SbCl3、ZnCl2、TiCl4、SnCl4、BF3In one kind or many
Kind, preferably AlCl3Or FeCl3.Catalyst amount is 0.3%~0.9% of arene content in aromatic naphtha（Weight ratio）.
Sulphur used is technical grade sulphur, can be powdered, graininess, sheet or bulk, preferably powdered.Can
Be in commercially available sulphur or natural gas processing or petroleum refining process produced by accessory substance sulphur.
Pitch used is the one or more in asphalt, bitumen, coal tar pitch, and needle penetration is 3~30
Dmm, 70 DEG C~110 DEG C of softening point.
Shoddy used is obtained waste old powder after the size-reduced grinding of junked tire reclaimed, granularity is 30~
80 mesh.
Flyash used is the incombustible that coal-fired power plant's catching from flue gas is got off, in fine ash shape, the particle diameter of particle
Scope is 0.5 μm~300 μm.
The preparation method of foregoing warm-mixing agent, including：After FT heating meltings, halogen is introduced, intermediate is obtained；To aromatic naphtha
Middle addition catalyst is simultaneously stirred, and then above-mentioned intermediate is mixed with aromatic naphtha, stirring reaction, is obtained institute of the present invention
Special warm-mixing agent.
The warm-mixing agent preparation method more specifically includes：It will be placed in after FT heating meltings in closed container, be heated to 250
DEG C~400 DEG C, keep introducing halogen at a temperature of this, stir 60~180min, obtain intermediate；By aromatic naphtha mounted in another closed
70 DEG C~150 DEG C are heated in container, catalyst is added thereto and is stirred, mixing time is no less than 30min.So
Above-mentioned intermediate is injected in aromatic naphtha with vaporific under stirring afterwards, after all spraying into, 70 DEG C~150 DEG C of constant temperature,
90~180min of stirring reaction, obtains the special warm-mixing agent used by the present invention.Wherein described FT is a kind of macromolecule alkane, carbon
Number is 40~130, preferably 60~130；Molecular weight is 562~1822, preferably 842~1822.Both after being coal gasification
A kind of macromolecule alkane that synthetic reaction is obtained or progress synthetic reaction is obtained by raw material of natural gas one is carried out again
Plant macromolecule alkane.
Present invention also offers a kind of preparation method of warm mix type Asphalt mixture anti-rut agent, including：In advance with FT, halogen
Element, aromatic naphtha raw material, and add catalyst.It will be placed in after FT heating meltings in closed container, be heated to 250 DEG C~400 DEG C, guarantor
Hold and introduce at a temperature of this halogen, stir 60~180min, obtain intermediate；Aromatic naphtha is heated in another closed container
70 DEG C~150 DEG C, catalyst is added thereto and is stirred.Then under stirring by above-mentioned intermediate with vaporific
It is injected in aromatic naphtha, after all spraying into, 70 DEG C~150 DEG C of constant temperature, 90~180min of stirring reaction is obtained used by the present invention
Special warm-mixing agent.Then it is suitable according to feeding intake for pitch-special warm-mixing agent-shoddy-flyash-sulphur-special warm-mixing agent
Sequence, in proportion delivers material into kneader, is merged at a temperature of 70 DEG C~110 DEG C uniform and is kneaded into dough, simultaneously
Start pumped vacuum systems, environmental protection treatment is carried out after the pernicious gas of generation is collected；Start bottom discharge screw extruder and cutting
Granulating system, is extruded, is granulated, and obtains warm mix type Asphalt mixture anti-rut agent of the present invention.
In the inventive method, the charging sequence taken is：Pitch-special warm-mixing agent-shoddy-flyash-sulphur.Tool
Body is：Pitch first is added into heating in kneader in advance to be melted, after after pitch melting, special warm-mixing agent is added and stirs
Mix, after pitch and special warm-mixing agent stir, add shoddy-flyash, stir, finally add sulphur.
In the inventive method, described kneader is bottom discharge screw rod extrusion type kneader, kneader speed of agitator 1300
~1500rpm, mixing time is 30~60min, and it is 70 DEG C~110 DEG C to mediate temperature, and extrusion temperature is 70 DEG C~110 DEG C.
In the inventive method, kneader adds pumped vacuum systems, can be the pernicious gas produced in production process such as
H2S、SO2After collecting, row environmental protection treatment is absorbed into by NaOH aqueous slkali, air pollution is not only reduced, and can be
The gas being mingled with material is extracted out, makes product closely knit, homogeneous, is conducive to storing, transport and applying.
The present invention is it is also an option that property adds regenerated plastics, when adding regenerated plastics, with anti-rut agent mass percent
Meter, including：
Sulphur 50%~90%,
Pitch 2%~17%,
Regenerated plastics 2%~10%,
Shoddy 2%~10%,
Flyash 2%~6%,
Special warm-mixing agent 2%~7%.
Regenerated plastics used are to carry out regeneration and granulation after technics of reclaim of plastic waste to obtain, can be polyethylene, polypropylene,
EVA（Ethylene-vinyl acetate copolymer）Any one or a few mixture in recycled plastic particle；70 DEG C of softening temperature~
110℃；Can be graininess, strip or sheet.
The charging sequence of regenerated plastics is located at after warm-mixing agent, before shoddy.
Invention also provides a kind of warm mix type anti-rutting asphalt compound, wrapped in terms of the percentage by weight of compound
Include：
Foregoing warm mix type Asphalt mixture anti-rut agent 1.0%~3.0%
Asphalt 4.0%~6.0%
Cement 1.0%~3.0%
Miberal powder 1.0%~3.0%
Gather materials 85.0%~93.0%.
Petroleum asphalt penetration used by the present invention is 60~120 dmm.
Gathering materials used by the present invention can be the one or more during limestone, basalt, andesite, granite gather materials,
Proportioning meets any one in close-graded AC-10, AC-13, AC-16 or AC-20.
Cement used by the present invention is portland cement, strength grade be 42.5,42.5R, 52.5,52.5R, 62.5 or
Any one in 62.5R.
Miberal powder used by the present invention is formed by ore grinding, and the component proportion that Particle size requirements are less than 0.075mm is big
In 70%.
The preparation method of warm mix type anti-rutting asphalt compound of the present invention, including：In advance by stirred tank, gather materials, oil drip
Green grass or young crops be heated to 125~145 DEG C it is standby, kettle to be mixed, gather materials, the temperature of asphalt it is constant after, asphalt, gather materials, water
Mud, miberal powder and warm mix type Asphalt mixture anti-rut agent particle are added in stirred tank simultaneously, stir, and obtain warm mix type and resist
Rutting asphalt compound.
Wherein, warm mix type Asphalt mixture anti-rut agent particle and oil pitch quality ratio are 1:9~3:7.
Warm mix type Asphalt mixture anti-rut agent of the present invention compared with prior art, has the following advantages that：
1st, sulphur, shoddy, pitch and special warm-mixing agent are with the addition of simultaneously in anti-rut agent of the present invention, when mixing mixing
During material, under the synergy of each component, asphalt pavement rut resisting performance is can obviously improve, while also having taken into account low temperature ductility
Energy.
2nd, anti-rut agent of the present invention, due to the addition of pitch, enhances anti-rut agent during compound mixing
The compatibility of grain and pitch, is conducive to anti-rut agent dispersed in compound and wraps in surface of aggregate.
3rd, in anti-rut agent of the present invention, due to the addition of special warm-mixing agent, compound mix and shaping temperature be can obviously reduce
Degree, reduces pernicious gas generating capacity, is conducive to environmental protection.The warm-mixing agent makes aromatic naphtha be sent out with FT by adding halogen and catalyst
Biochemical reaction, makes warm-mixing agent of the present invention to play warm mix effect to pitch, but also take into account the high and low warm nature of pitch
Can, and the compatibility with pitch can be improved, improve the adhesiveness of pitch and building stones.
4th, in anti-rut agent of the present invention, the solid slag i.e. plastication of flyash produced using coal-burning power plant is improved
Product compactness and hardness, improve anti-rut behavior, are conducive to product to store and transport；In addition, utilizing coal ash instead
Part asphalt stock, is utilized waste, is conducive to environmental protection, cost of material is greatly lowered.
5th, the charging sequence taken in the present invention is pitch-special warm-mixing agent-shoddy-flyash-sulphur, is not only had
Beneficial to the pre- thawing of pitch, while being also beneficial to improve the compatibility between pitch and shoddy, flyash, sulphur is finally added
Sulphur, is conducive to material to be well mixed, and is easily kneaded into dough, makes product homogeneous, is conducive to application.
6th, present invention employs the kneader for installing pumped vacuum systems additional, compared with using the way of extruder in the past, save
The precomminution of pitch and the premixing of material the two steps, are conducive to the dispensing of material, simplify production process, carry
High production efficiency, while pumped vacuum systems, pernicious gas can be extracted out and is collected and environmental protection treatment, not only reduce air
Pollution, and by the way that the gas that is mingled with material is extracted out, make the product after shaping homogeneous, be conducive to storing, transport and
Using.
7th, in anti-rut agent preparation process of the present invention, temperature is 70 DEG C~110 DEG C, and technology temperature is low than ever, can be obvious
The generating capacity of pernicious gas is reduced, mitigates and operating personnel is endangered.
Embodiment
Technical scheme is described in detail with reference to embodiment, but the invention is not restricted to following examples.In order to
Contrast, when preparing asphalt, it is AC-13 that level, which is matched somebody with somebody, and the bitumen aggregate ratio that bitumen aggregate ratio is in 5.4%, embodiment refers to（Pitch+
Anti-rut agent）:The mass ratio gathered materials.
Embodiment 1
It is that 40, molecular weight is that the FT that 562, weight is 1000g is put by the carbon number that synthetic reaction obtains is carried out after coal gasification again
In in closed container, being heated to 250 DEG C, the chlorine of 0.89 mole of introducing at a temperature of this is kept, 60min is stirred, obtains intermediate；Claim
It is the 70% line tapped oil 7000g that subtracts four to take arene content, and 70 DEG C are heated in another closed container, is added thereto
44.1g anhydrous AlCl3, stir 45 min.Then above-mentioned intermediate is subtracted four line is taken out with vaporific be injected under stirring
In fuel-displaced, after all spraying into, 70 DEG C of constant temperature, stirring reaction 90min obtains the special warm-mixing agent used by the present invention.Each component
Proportioning is shown in Table 1.
It is the bitumen 27kg, shoddy that 3dmm softening points are 110 DEG C to weigh above-mentioned special warm-mixing agent 7kg, needle penetration
10kg, flyash 6kg, graininess natural gas processing process produce industrial sulphur 50kg, according to pitch-special warm-mixing agent-
The charging sequence of shoddy-flyash-sulphur is added in kneader.I.e.：First pitch is added in kneader heat into
Row is pre- to be melted, and after after pitch melting, is added special warm-mixing agent and is stirred, after pitch and special warm-mixing agent stir,
Shoddy-flyash is added, stirs, finally adds sulphur.Then merged uniformly at a temperature of 110 DEG C and be kneaded into dough
Shape, while starting pumped vacuum systems, is absorbed at row environmental protection after the pernicious gas of generation is collected by NaOH aqueous slkali
Reason.Finally start bottom discharge screw extruder and cutting granulating system, extruded, granulated, formation diameter 3mm, length 2mm~
3mm particle, obtains warm mix type Asphalt mixture anti-rut agent of the present invention.Kneader speed of agitator 1300rpm, mixing time
30min, it is 110 DEG C to mediate temperature, and extrusion temperature is 110 DEG C.Raw material proportioning and anti-rut agent property are shown in Table 2.
Special asphalt stirred tank is heated to 125 DEG C of constant temperature in advance；Fushun limestone aggregates are configured to level
With gathering materials for AC-13, gross weight is 100kg, be heated to 125 DEG C it is standby；Weigh No. 70 pitches（East Sea board）4.86kg, is heated to
125 DEG C standby；According to anti-rut agent:The mass ratio of pitch is 1:9 ratio, the anti-rut agent particle for weighing 0.54kg is standby.
Kettle to be mixed, gather materials, asphalt temperature it is constant after, above-mentioned material is added in stirred tank together, stir 2 minutes, release mixing
Material.Then various bitumen mixture specimens are prepared into, performance of asphalt mixture evaluation experimental is carried out, the results are shown in Table 3.
Embodiment 2
It is that 90, molecular weight is to carry out the FT that synthetic reaction obtains after the coal gasification that 1262, weight is 3500g again to put by carbon number
In in closed container, being heated to 370 DEG C, the chlorine of 1.16 moles of introducing at a temperature of this is kept, 100min is stirred, obtains intermediate；
The catalytic cracked oil pulp 1000g that arene content is 63% is weighed, 90 DEG C are heated in another closed container, is added thereto
4.7g anhydrous TiCl4, stir 35 min.Then above-mentioned intermediate is injected to cycle oil with vaporific under stirring
In slurry, after all spraying into, 90 DEG C of constant temperature, stirring reaction 160min obtains the special warm-mixing agent used by the present invention.Each component is matched somebody with somebody
Than being shown in Table 1.
It is the asphalt 4kg, shoddy that 30 dmm softening points are 70 DEG C to weigh above-mentioned special warm-mixing agent 2kg, needle penetration
Industrial sulphur 90kg produced by 2kg, flyash 2kg, powdered petroleum refining process, according to pitch-special warm-mixing agent-useless
The charging sequence of rubber powder-flyash-sulphur is added in kneader.I.e.：First pitch is added to heat in kneader and carried out
It is pre- to melt, after after pitch melting, add special warm-mixing agent and stir, after pitch and special warm-mixing agent stir, add
Plus shoddy-flyash, stir, finally add sulphur.Then merged uniformly at a temperature of 70 DEG C and be kneaded into dough,
Start pumped vacuum systems simultaneously, row environmental protection treatment is absorbed into by NaOH aqueous slkali after the pernicious gas of generation is collected.
Finally start bottom discharge screw extruder and cutting granulating system, extruded, granulated, form diameter 3mm, length 2mm~3mm
Particle, obtain warm mix type Asphalt mixture anti-rut agent of the present invention.Kneader speed of agitator 1500rpm, mixing time
60min, it is 70 DEG C to mediate temperature, and extrusion temperature is 70 DEG C.Raw material proportioning and anti-rut agent property are shown in Table 2.
Special asphalt stirred tank is heated to 145 DEG C of constant temperature；Fushun limestone aggregates are configured to level with being
AC-13 gathers materials, and gross weight is 100kg, be heated to 145 DEG C it is standby；Weigh No. 70 pitches（East Sea board）3.78kg, is heated to 145
It is DEG C standby；According to anti-rut agent:The mass ratio of pitch is 3:7 ratio, the anti-rut agent particle for weighing 1.62kg is standby.Wait to stir
Mix kettle, gather materials, asphalt temperature it is constant after, above-mentioned material is added in stirred tank together, stir 2 minutes, release compound.So
After be prepared into various bitumen mixture specimens, carry out performance of asphalt mixture evaluation experimental, the results are shown in Table 3.
Embodiment 3
It is that 130, molecular weight is that the synthetic reaction that carried out by raw material of natural gas that 1822, weight is 7000g is obtained by carbon number
FT heating meltings after be placed in closed container, be heated to 400 DEG C, keep introducing at a temperature of this 1.15 moles of bromine, stirring
180min, obtains intermediate；The furfural extract oil 1000g that arene content is 57% is weighed, is added in another closed container
Heat adds 1.7g anhydrous FeCl thereto to 150 DEG C3, stir 30min.Then under stirring by above-mentioned intermediate with
Vaporific to be injected in furfural extract oil, after all spraying into, 150 DEG C of constant temperature, stirring reaction 180min obtains institute of the present invention
Special warm-mixing agent.Each group distribution ratio is shown in Table 1.
It is the coal tar pitch 16kg, shoddy that 16 dmm softening points are 90 DEG C to weigh above-mentioned special warm-mixing agent 4kg, needle penetration
Industrial sulphur 70kg produced by 6kg, flyash 4kg, sheet petroleum refining process, according to pitch-special warm-mixing agent-scrap rubber
The charging sequence of powder-flyash-sulphur is added in kneader.I.e.：Pitch first is added into heating in kneader to carry out in advance
Melt, after after pitch melting, add special warm-mixing agent and stir, after pitch and special warm-mixing agent stir, addition
Shoddy-flyash, stirs, and finally adds sulphur.Then merged at a temperature of 90 DEG C uniform and be kneaded into dough, together
Shi Qidong pumped vacuum systems, row environmental protection treatment is absorbed into after the pernicious gas of generation is collected by NaOH aqueous slkali.Most
Start bottom discharge screw extruder and cutting granulating system afterwards, extruded, granulated, formation diameter 3mm, length 2mm~3mm
Particle, obtains warm mix type Asphalt mixture anti-rut agent of the present invention.Kneader speed of agitator 1400rpm, mixing time 45min,
It is 90 DEG C to mediate temperature, and extrusion temperature is 90 DEG C.Raw material proportioning and anti-rut agent property are shown in Table 2.
Special asphalt stirred tank is heated to 135 DEG C of constant temperature；Fushun limestone aggregates are configured to level with being
AC-13 gathers materials, and gross weight is 100kg, be heated to 135 DEG C it is standby；Weigh No. 70 pitches（East Sea board）4.32kg, is heated to 135
It is DEG C standby；According to anti-rut agent:The mass ratio of pitch is 2:8 ratio, the anti-rut agent particle for weighing 1.08kg is standby.Wait to stir
Mix kettle, gather materials, asphalt temperature it is constant after, above-mentioned material is added in stirred tank together, stir 2 minutes, release compound.So
After be prepared into various bitumen mixture specimens, carry out performance of asphalt mixture evaluation experimental, the results are shown in Table 3.
Embodiment 4
Be the same as Example 1, is simply added after warm-mixing agent wherein, and regenerated plastics, each material are added before adding shoddy
Proportion relation, referring to table 1 and table 2.Performance of asphalt mixture evaluation result is shown in Table 3.
Embodiment 5
Be the same as Example 2, is simply added after warm-mixing agent wherein, and regenerated plastics, each material are added before adding shoddy
Proportion relation, referring to table 1 and table 2.Performance of asphalt mixture evaluation result is shown in Table 3.
Embodiment 6
Be the same as Example 3, is simply added after warm-mixing agent wherein, and regenerated plastics, each material are added before adding shoddy
Proportion relation, referring to table 1 and table 2.Performance of asphalt mixture evaluation result is shown in Table 3.
Comparative example 1
Special asphalt stirred tank is heated to 170 DEG C of constant temperature in advance standby；Fushun limestone aggregates are prepared
Into level with gathering materials for AC-13, gross weight is 100kg, is heated to 170 DEG C of constant temperature standby；According to pitch:The mass ratio gathered materials is
5.4% ratio weighs No. 70 pitches（East Sea board）5.4kg, is heated to 170 DEG C of constant temperature standby；Kettle to be mixed, gather materials, pitch temperature
After degree is constant, above-mentioned asphalt and aggregate are added in stirred tank together, stirred 2 minutes, compound is released.Then it is prepared into each
Bitumen mixture specimen is planted, performance of asphalt mixture evaluation experimental is carried out.Asphalt Mixture is shown in Table 3.
Comparative example 2
Special asphalt stirred tank is heated to 160 DEG C of constant temperature in advance standby；Fushun limestone aggregates are prepared
Into level with gathering materials for AC-13, gross weight is 100kg, is heated to 160 DEG C of constant temperature standby；Weigh No. 70 pitches（East Sea board）
4.32kg, is heated to 160 DEG C of constant temperature standby；According to sulphur:The mass ratio of pitch is 1:4 ratio, weighs 1.08kg sulphur
Powder is standby.I.e. bitumen aggregate ratio is 5.4%, and bitumen aggregate ratio mentioned here refers to（Pitch+sulphur）:The ratio gathered materials.Kettle to be mixed, collection
After material, asphalt temperature are constant, above-mentioned material is added in stirred tank together, stirred 2 minutes, compound is released.Then prepare
Into various bitumen mixture specimens, performance of asphalt mixture evaluation experimental is carried out.Asphalt Mixture is shown in Table 3.
Special warm-mixing agent each group distribution ratio used by the present invention of table 1
The warm mix type Asphalt mixture anti-rut agent of table 2 is with when property
The Asphalt Mixture of table 3
From table 3, after warm mix type Asphalt mixture anti-rut agent of the present invention is added in asphalt, mix temperature
Degree substantially reduction, has clear improvement, especially rut dynamic stability increase rate is very big to Properties of Asphalt Mixture, can reach and change
The technical requirement of property pitch, has taken into account cryogenic property, other indexs also comply with demand of technical standard.
Claims (14)
1. a kind of warm mix type Asphalt mixture anti-rut agent, it is characterised in that：In terms of anti-rut agent mass percent, including：
Sulphur 50%~90%,
Pitch 4%~28%,
Shoddy 2%~10%,
Flyash 2%~5%,
Special warm-mixing agent 2%~7%,
The special warm-mixing agent preparing raw material includes FT, halogen, aromatic naphtha, and added with catalyst, wherein described FT is coal
A kind of macromolecule alkane that synthetic reaction obtains is carried out after gasification again or synthetic reaction is carried out by raw material of natural gas obtaining
A kind of macromolecule alkane arrived.
2. anti-rut agent according to claim 1, it is characterised in that：The FT is that carbon number is 40~130, and molecular weight is
562~1822 macromolecule alkane.
3. anti-rut agent according to claim 2, it is characterised in that：The FT is that carbon number is 60~130；Molecular weight is
842~1822 macromolecule alkane.
4. anti-rut agent according to claim 1 or 2, it is characterised in that：The consumption of described halogen is FT molal quantitys
0.3~0.5 times；The weight ratio of FT and aromatic naphtha is (1~7):The arbitrary proportion of (7~1).
5. anti-rut agent according to claim 1 or 2, it is characterised in that：Described aromatic naphtha is a kind of rich in aromatic hydrocarbons
Component, arene content therein is 57%~78%.
6. anti-rut agent according to claim 5, it is characterised in that：Described aromatic naphtha is a kind of group rich in aromatic hydrocarbons
Point, arene content therein is 60%~75%.
7. anti-rut agent according to claim 1 or 2, it is characterised in that：Described catalyst is anhydrous AlCl3、FeCl3、
SbCl3、ZnCl2、TiCl4、SnCl4、BF3In one or more, the catalyst amount is virtue in aromatic naphtha by weight
The 0.3%~0.9% of hydrocarbon content.
8. anti-rut agent according to claim 7, it is characterised in that：Described catalyst is anhydrous AlCl3Or FeCl3, institute
Catalyst amount is stated, is 0.3%~0.9% of arene content in aromatic naphtha by weight.
9. anti-rut agent according to claim 1 or 2, it is characterised in that：The special warm-mixing agent preparation method includes：Will
It is placed in after FT heating meltings in closed container, is heated to 250 DEG C~400 DEG C, keeps introducing halogen at a temperature of this, stirring 60~
180min, obtains intermediate；Aromatic naphtha is heated to 70 DEG C~150 DEG C in another closed container, thereto addition catalysis
Agent is simultaneously stirred, and mixing time is no less than 30min；Then above-mentioned intermediate is injected to vaporific under stirring
In aromatic naphtha, after all spraying into, 70 DEG C~150 DEG C of constant temperature, 90~180min of stirring reaction obtains special warm-mixing agent, wherein
Described FT is a kind of macromolecule alkane, and carbon number is 40~130, and molecular weight is 562~1822.
10. anti-rut agent according to claim 9, it is characterised in that：Described FT is a kind of macromolecule alkane, and carbon number is
60~130, molecular weight is 842~1822.
11. a kind of warm mix type Asphalt mixture anti-rut agent, it is characterised in that：In terms of anti-rut agent mass percent, including：
Sulphur 50%~90%,
Pitch 2%~17%,
Regenerated plastics 2%~10%,
Shoddy 2%~10%,
Flyash 2%~6%,
Special warm-mixing agent 2%~7%.
12. anti-rut agent according to claim 11, it is characterised in that：Regenerated plastics used is after technics of reclaim of plastic waste
Carry out regeneration and granulation to obtain, be any one in polyethylene, polypropylene, ethylene-vinyl acetate copolymer recycled plastic particle
Plant or several mixtures；70 DEG C~110 DEG C of softening temperature；It is shaped as graininess, strip or sheet.
13. a kind of preparation method of warm mix type Asphalt mixture anti-rut agent, it is characterised in that：Preparation process includes following step
Suddenly：
Step one：In advance using FT, halogen, aromatic naphtha as raw material, and catalyst is added, closed container will be placed in after FT heating meltings
It is interior, 250 DEG C~400 DEG C are heated to, keeps introducing halogen at a temperature of this, stirs 60~180min, obtain intermediate；
Step 2：Aromatic naphtha is heated to 70 DEG C~150 DEG C in another closed container, catalyst is added thereto and abundant
Stir, be then injected to above-mentioned intermediate in aromatic naphtha with vaporific under stirring, after all spraying into, constant temperature 70
DEG C~150 DEG C, 90~180min of stirring reaction obtains special warm-mixing agent；
Step 3：According to the feeding sequence of pitch-special warm-mixing agent-shoddy-flyash-sulphur, material is thrown in proportion
It is put into kneader, is merged uniformly at a temperature of 70 DEG C~110 DEG C and be kneaded into dough, while start pumped vacuum systems, will
The pernicious gas of generation carries out environmental protection treatment after collecting；
Step 4：Start bottom discharge screw extruder and cutting granulating system, extruded, granulated, obtain warm mix type pitch and mix
Close material anti-rut agent.
14. the preparation method of anti-rut agent according to claim 13, it is characterised in that：Described kneader is bottom discharge spiral shell
Bar extruded type kneader, kneader 1300~1500rpm of speed of agitator, mixing time is 30~60min, and it is 70 DEG C to mediate temperature
~110 DEG C, extrusion temperature is 70 DEG C~110 DEG C.
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