CN108059970A - A kind of Application way of catalytic slurry - Google Patents
A kind of Application way of catalytic slurry Download PDFInfo
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- CN108059970A CN108059970A CN201610983412.0A CN201610983412A CN108059970A CN 108059970 A CN108059970 A CN 108059970A CN 201610983412 A CN201610983412 A CN 201610983412A CN 108059970 A CN108059970 A CN 108059970A
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- oil
- catalytic slurry
- catalytic
- slurry
- condensation
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/006—Distillation of hydrocarbon oils of waste oils other than lubricating oils, e.g. PCB's containing oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/06—Vacuum distillation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/40—Characteristics of the process deviating from typical ways of processing
- C10G2300/4012—Pressure
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Working-Up Tar And Pitch (AREA)
- Catalysts (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of Application ways of catalytic slurry.This method includes：Modifying agent is added in catalytic slurry, is stirred, Modified catalytic slurry oil is made；The Modified catalytic slurry oil of gained is evaporated under reduced pressure after being mixed with reduced crude, and decompression residuum is obtained after vacuum distillation；Wherein, with step（1）On the basis of total raw material quality, as mass fraction, catalytic slurry：95.0%~99.9%, modifying agent：0.1%~5.0%；The modifying agent is the one or more in condensation of aluminum phosphate and silicon phosphate curing agent.The method of the present invention can make full use of catalytic slurry, and can improve catalytic slurry response to temperature, the problem of anti-aging property is poor, and improve the flash-point of decompression residuum, while the raw materials for production of the road asphalt excellent available for processability or road asphalt.
Description
Technical field
The present invention relates to a kind of Application ways of catalytic slurry, the particularly method for producing road asphalt.
Background technology
Heavy oil catalytic cracking is one of important secondary operation means of PETROLEUM PROCESSING, in order to reduce catalyst carbon deposition, extend
Its service life, usual catalytic cracking unit will get rid of a certain proportion of slurry oil outside, and majority is used to produce fuel oil or be mixed into residual oil
Coking plant, but since in FCC slurry, there are catalyst granules, its combustibility can be influenced, in addition, former from maximizing the benefits
For then, nor best utilization ways.
In order to improve the utility value of FCC slurry, some enterprises start for slurry oil to be used for the production of pitch.Using more
Technology is to mix slurry oil with crude oil to carry out vacuum distillation production pitch etc..However, due to containing more double bond group in slurry oil
Point and the reasons such as catalyst granules, catalytic slurry is caused to have the characteristics that high-temperature behavior, response to temperature and anti-aging property are poor in itself,
Show that the property after the softening point of blend asphalt, 60 DEG C of dynamic viscosities, penetration index and degradations is deteriorated, with itself plus
The increase variation for entering amount is further apparent.Or as a result, can only produce more low-grade road asphalt or be reduce it is original etc.
The quality and performance of grade pitch, add in a series of problems excessively influenced whether during sale and use.
CN1302841A discloses a kind of processing method of catalytic slurry, and wherein catalytic slurry is needed by vacuum distillation,
Obtained heavy constituent again with subtracting slag blending or reoxidize and could produce after mixing with decompression residuum after solvent deoiling pitch, oxidation
Go out qualified road asphalt.
CN103554926A discloses a kind of low grade asphalt for high grade road and preparation method thereof, wherein needing to be catalyzed
It is first evaporated under reduced pressure after slurry oil and the mixing of normal slag, it then could be with de-oiled asphalt, solvent refining tapped oil, unmodified
One or more in hard decompression residuum prepare low grade asphalt for high grade road by blending method.This method is still
It cannot so solve the problems, such as that the intrinsic response to temperature of catalytic slurry and anti-aging property are poor.
CN102559250A discloses a kind of catalytic slurry air-distillation production mixing asphalt oil method.This method is in slurry oil
It is middle to add in a certain amount of vapor partial pressure conditioning agent and peroxide, the mixture is then heated to 360 ~ 420 DEG C, into fractionation
Tower is fractionated, and obtains being more than 360 DEG C of bottom of towe heavy distillat as mixing asphalt oil.The method that air-distillation can be used in this method obtains
To mixing asphalt component, but do not refer to the response to temperature and anti-aging property for improving and producing road asphalt, and weight after oxidation
The increase of 100 DEG C of viscosity of slurry oil, that is, ready-mixed oil is mainly caused by topping processing.
105273421 A of CN disclose a kind of catalytic slurry Application way, using catalytic slurry subtracting by vacuum distillation
Bottom ash oil is used as raw material, crosslinking agent progress crosslinking condensation reaction preparation condensation slurry oil is added in bottom ash oil to subtracting, by itself and matrix
Mixing asphalt goes out road asphalt, and wherein crosslinking agent is peroxide cross-linking agent, in sulphur and sulfide crosslinking agent, metal oxide
One or more kinds of mixtures.This method is the modifying agent by the use of improved catalytic slurry as matrix pitch, but can not be from
Specific improvement effect is known in the patented method.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of Application ways of catalytic slurry.The method of the present invention can be with
Catalytic slurry is made full use of, and catalytic slurry response to temperature can be improved, the problem of anti-aging property is poor, and improves decompression residuum
Flash-point, while available for the excellent road asphalt of processability or the raw materials for production of road asphalt.
The present invention provides a kind of Application way of catalytic slurry, including：
（1）Modifying agent is added in catalytic slurry, Modified catalytic slurry oil is made in stirring；
（2）By step（1）The Modified catalytic slurry oil of gained is evaporated under reduced pressure after being mixed with reduced crude, after vacuum distillation
To decompression residuum；
Wherein, with step（1）On the basis of total raw material quality, as mass fraction,
Catalytic slurry：95.0%~99.9%, it is preferably 97.0%~99.8%；
Modifying agent：0.1%~5.0%, it is preferably 0.2%~3.0%；
The modifying agent is the one or more in condensation of aluminum phosphate and silicon phosphate curing agent.
The modifying agent is preferably that condensation of aluminum phosphate and silicon phosphate curing agent, wherein condensation of aluminum phosphate and silicon phosphate cure
The mass ratio of agent is（1：9）~（9：1）, it is preferably（3：7）~（7：3）.
Heretofore described condensation of aluminum phosphate can be aluminium triphosphate, modified aluminium triphosphate, tripolyphosphate dihydro
One or more in aluminium, the fineness of the condensation of aluminum phosphate is more than 325 mesh.Wherein, modified aluminium triphosphate can be adopted
It is obtained, for example is modified using one or more methods such as inorganic compound, surfactant, inorganic chemical with conventional method of modifying
Object can be the one or more in the compound of the common modifying element such as siliceous, zinc, calcium, magnesium.The silicon phosphate curing agent
Fineness is more than 1000 mesh moisture≤0.8wt%.
In the Application way of the catalytic slurry of the present invention, as mass fraction, including following raw material components：
Reduced crude：70%~99%, it is preferably 80%~97%；
Modified catalytic slurry oil：1%~30%, it is preferably 3%~20%.
The Application way step of the catalytic slurry of the present invention（1）In, modifying agent is added to and is heated to 140 DEG C~200 DEG C
Catalytic slurry in, be preferably added to and be heated in 150 DEG C~190 DEG C catalytic slurries, time of the stirring for 0.5~
5.0 it is small when, preferably stir 1.0~4.0 it is small when.
The Application way step of the catalytic slurry of the present invention（2）In, by step（1）The Modified catalytic slurry oil and normal pressure of gained
The temperature of residual oil mixing is 100 DEG C~300 DEG C, preferably 120 DEG C~250 DEG C.
In the Application way of the catalytic slurry of the present invention, gained decompression residuum initial boiling point is 400 ~ 550 DEG C, further preferably
It, can be directly as straight asphalt or as the raw material for concocting road asphalt for 420 ~ 530 DEG C.
In the Application way of the catalytic slurry of the present invention, the slurry oil is catalytic cracked oil pulp, can be that distillate is urged
Change cracking slurry oil, oil slurry from catalytically cracked heavy oil, Residue Catalytic Cracking slurry oil or distillate to mix in refining Residue Catalytic Cracking slurry oil
It is one or more of；Wherein described residual oil includes one or more of reduced crude and decompression residuum, and the heavy oil can be original
The heavy oil that oil is handled through plug, distillate include vacuum gas oil (VGO)（VGO）And AGO (atmospheric gas oil)（AGO）In one kind or several
Kind.
Compared with prior art, the invention has the advantages that：
The present invention is modified catalytic slurry, and unstable double bond component with modifying agent by carrying out crosslinking condensation etc. in slurry oil
Reaction, obtained Modified catalytic slurry oil carries out mixing distillation with reduced crude, by effect of mass transmitting so that in Modified catalytic slurry oil
Heavier, beneficial to improvement asphalt performance component is retained in decompression residuum, is conducive to further improve the response to temperature of pitch,
Especially high temperature anti-rut behavior, and the anti-aging property of pitch is improved, while the flash-point of pitch is also improved, it ensure that drip
Blue or green heating safety index.
The present invention efficiently uses while the performance of road asphalt is improved for catalytic slurry, reduces road asphalt production
Cost improves Business Economic Benefit, opens a feasible approach.
Specific embodiment
The technical solution that the invention is further illustrated by the following examples, but these embodiments cannot limit the present invention,
The wt% being related to is mass fraction.
Embodiment 1
Catalytic slurry is heated to 190 DEG C, by powdery condensation of aluminum phosphate（Aluminium triphosphate, 800 mesh of fineness）It is added to catalyzed oil
In slurry, wherein catalytic slurry accounts for the 98.7wt% of total amount, and condensation of aluminum phosphate accounts for the 1.3wt% of total amount, at 190 DEG C, with commonly stirring
Terminate after mixing hybrid reaction 240min, obtain Modified catalytic slurry oil.
Above-mentioned Modified catalytic slurry oil is added to reduced crude (25 DEG C of density 0.975g/cm3, 32.5 DEG C of softening point, flash-point
221 DEG C, similarly hereinafter) in, wherein Modified catalytic slurry oil ratio accounts for 5wt%, is then evaporated under reduced pressure, and steams<515 DEG C of light fraction,
The yield of light fraction is 36wt%, obtains the decompression residuum of good properties.Its property is shown in Table 2.
Embodiment 2
Catalytic slurry accounts for the 95.0wt% of total amount, condensation of aluminum phosphate（Aluminium dihydrogen tripolyphosphate, 800 mesh of fineness）Account for total amount
5.0wt%, other conditions obtain Modified catalytic slurry oil with embodiment 1.
The condition that Modified catalytic slurry oil is evaporated under reduced pressure after being mixed with reduced crude is the same as embodiment 1.The property of decompression residuum
Matter is shown in Table 2.
Embodiment 3
Catalytic slurry accounts for the 99.8wt% of total amount, and condensation of aluminum phosphate accounts for the 0.2wt% of total amount, and other conditions are changed with embodiment 1
Property catalytic slurry.
The condition that Modified catalytic slurry oil is evaporated under reduced pressure after being mixed with reduced crude is the same as embodiment 1.The property of decompression residuum
Matter is shown in Table 2.
Embodiment 4
Catalytic slurry is heated to 180 DEG C, by powdered acid silicon curing agent（1000 mesh of fineness, moisture≤0.8%）It is added to catalysis
In slurry oil, wherein catalytic slurry accounts for the 99.1wt% of total amount, and powdered acid silicon curing agent accounts for the 0.9wt% of total amount, at 180 DEG C,
With terminating after normal agitation hybrid reaction 180min, Modified catalytic slurry oil is obtained.
Above-mentioned Modified catalytic slurry oil is added in reduced crude, wherein Modified catalytic slurry oil ratio accounts for 10wt %, then
It is evaporated under reduced pressure, is steamed<500 DEG C of light fraction, the yield of light fraction is 31wt%, obtains the decompression residuum of good properties.Its
Property is shown in Table 2.
Embodiment 5
Catalytic slurry accounts for the 95.5wt% of total amount, the 4.5wt% of silicon phosphate curing agent total amount, and other conditions are changed with embodiment 1
Property catalytic slurry.
The condition that Modified catalytic slurry oil is evaporated under reduced pressure after being mixed with reduced crude is the same as embodiment 4.The property of decompression residuum
Matter is shown in Table 3.
Embodiment 6
Catalytic slurry accounts for the 99.8wt% of total amount, and silicon phosphate curing agent accounts for the 0.2wt% of total amount, and other conditions are obtained with embodiment 4
Modified catalytic slurry oil.
The condition that Modified catalytic slurry oil is evaporated under reduced pressure after being mixed with reduced crude is the same as embodiment 4.The property of decompression residuum
Matter is shown in Table 3.
Embodiment 7
Catalytic cracked oil pulp is heated to 180 DEG C, by powdered acid silicon curing agent（1000 mesh of fineness, moisture≤0.8wt%）And contracting
Close aluminum phosphate（Aluminium triphosphate, 800 mesh of fineness）It is added in catalytic slurry, wherein catalytic slurry accounts for the 98.7wt% of total amount, phosphorus
Sour silicon curing agent accounts for the 0.8wt% of total amount, and condensation of aluminum phosphate accounts for the 0.5wt% of total amount, at 170 DEG C, is mixed with normal agitation anti-
Terminate after answering 150min, obtain Modified catalytic slurry oil.
The condition that Modified catalytic slurry oil is evaporated under reduced pressure after being mixed with reduced crude is the same as embodiment 1.The property of decompression residuum
Matter is shown in Table 3.
Embodiment 8
Catalytic slurry is heated to 170 DEG C, by silicon phosphate curing agent（1000 mesh of fineness, moisture≤0.8%）, condensation of aluminum phosphate（Three
Poly aluminium phosphate, 800 mesh of fineness）It is added in catalytic slurry, wherein catalytic slurry accounts for the 99.2wt% of total amount, silicon phosphate curing agent
The 0.6wt% of total amount is accounted for, condensation of aluminum phosphate accounts for the 0.3wt% of total amount, at 170 DEG C, after normal agitation hybrid reaction 180min
Terminate, obtain Modified catalytic slurry oil.
The condition that Modified catalytic slurry oil is evaporated under reduced pressure after being mixed with reduced crude is the same as embodiment 4.The property of decompression residuum
Matter is shown in Table 3.
Comparative example 1
Condition is added without modifying agent, and obtains comparison slurry oil after agitating and heating 180min at 180 DEG C with embodiment 4 in slurry oil.
The comparison slurry oil of heating is added in the reduced crude of same embodiment 1, wherein Modified catalytic slurry oil ratio
10wt % are accounted for, are then evaporated under reduced pressure, are steamed<500 DEG C of light fraction, the yield of light component is 33wt%, obtains decompression slag
Oil.Its property is shown in Table 2.
The dosage of modifying agent used in 1 embodiment of table and comparative example
| Embodiment | Condensation of aluminum phosphate, wt% | Silicon phosphate curing agent, wt% |
| Embodiment 1 | 1.3 | - |
| Embodiment 2 | 5.0 | - |
| Embodiment 3 | 0.2 | - |
| Embodiment 4 | - | 0.9 |
| Embodiment 5 | - | 4.5 |
| Embodiment 6 | - | 0.2 |
| Embodiment 7 | 0.5 | 0.8 |
| Embodiment 8 | 0.3 | 0.6 |
| Comparative example 1 | - | - |
The property of decompression residuum obtained by 2 embodiment of table and comparative example
| Project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 |
| Reduced crude, wt% | 95 | 95 | 95 | 90 | 90 |
| Modified catalytic slurry oil, wt% | 5 | 5 | 5 | 10 | 10 |
| Needle penetration (25 DEG C), 0.1mm | 75 | 67 | 80 | 86 | 96 |
| Softening point, DEG C | 47.8 | 49.2 | 46.7 | 46.4 | 45.4 |
| Ductility (10 DEG C), cm | 55 | 49 | 64 | 73 | 56 |
| Kinematic viscosity (60 DEG C), Pa.s | 188.2 | 197.0 | 183.5 | 181.1 | 152.4 |
| Flash-point, DEG C | 330 | 339 | 319 | 310 | 287 |
| Penetration index (PI) | -0.41 | -0.22 | -0.60 | -0.49 | -1.14 |
| TFOT (163 DEG C, 5h) | |||||
| Penetration ratio, % | 67.3 | 69.5 | 66.0 | 66.7 | 61.3 |
| Ductility (10 DEG C), cm | 13 | 10 | 16 | 14 | 8 |
The property of decompression residuum obtained by 3 embodiment of table and comparative example
| Project | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| Reduced crude, wt% | 90 | 90 | 95 | 90 |
| Modified catalytic slurry oil, wt% | 10 | 10 | 5 | 10 |
| Needle penetration (25 DEG C), 0.1mm | 83 | 91 | 71 | 83 |
| Softening point, DEG C | 46.1 | 45.8 | 47.9 | 46.8 |
| Ductility (10 DEG C), cm | 71 | 81 | 58 | 75 |
| Kinematic viscosity (60 DEG C), Pa.s | 183.4 | 178.0 | 190.4 | 189.5 |
| Flash-point, DEG C | 314 | 307 | 332 | 320 |
| Penetration index (PI) | 0.20 | -0.51 | -0.27 | -0.36 |
| TFOT (163 DEG C, 5h) | ||||
| Penetration ratio, % | 66.9 | 65.9 | 67.8 | 67.0 |
| Ductility (10 DEG C), cm | 12 | 13 | 14 | 15 |
Claims (9)
1. a kind of Application way of catalytic slurry, including：
（1）Modifying agent is added in catalytic slurry, is stirred, Modified catalytic slurry oil is made；
（2）By step（1）The Modified catalytic slurry oil of gained is evaporated under reduced pressure after being mixed with reduced crude, after vacuum distillation
To decompression residuum；
Wherein, with step（1）On the basis of total raw material quality, as mass fraction,
Catalytic slurry：95.0%~99.9%, it is preferably 97.0%~99.8%；
Modifying agent：0.1%~5.0%, it is preferably 0.2%~3.0%；
The modifying agent is the one or more in condensation of aluminum phosphate and silicon phosphate curing agent.
2. according to the method for claim 1, it is characterised in that：Step（1）In, modifying agent is added to and is heated to 140 DEG C
It in~200 DEG C of catalytic slurry, is preferably added to and is heated in 150 DEG C~190 DEG C catalytic slurries, the time of the stirring is
0.5~5.0 it is small when, preferably stir 1.0~4.0 it is small when.
3. according to the method for claim 1, it is characterised in that：The modifying agent cures for condensation of aluminum phosphate and silicon phosphate
Agent, the wherein mass ratio of condensation of aluminum phosphate and silicon phosphate curing agent are（1：9）~（9：1）, it is preferably（3：7）~（7：3）.
4. according to the method described in claim 1 or 3, it is characterised in that：The condensation of aluminum phosphate is aluminium triphosphate, modification
One or more in aluminium triphosphate, aluminium dihydrogen tripolyphosphate, the fineness of the condensation of aluminum phosphate is more than 325 mesh；Institute
The fineness for stating silicon phosphate curing agent is more than 1000 mesh moisture≤0.8wt%.
5. according to the method for claim 1, it is characterised in that：Step（2）In, as mass fraction, including following raw material
Component：
Reduced crude：70%~99%, it is preferably 80%~97%；
Modified catalytic slurry oil：1%~30%, it is preferably 3%~20%.
6. according to the method for claim 1, it is characterised in that：Step（1）The Modified catalytic slurry oil and reduced crude of gained
The temperature of mixing is 100 DEG C~300 DEG C, preferably 120 DEG C~250 DEG C.
7. according to the method for claim 1, it is characterised in that：Gained decompression residuum initial boiling point is 400 ~ 550 DEG C, is preferably
420~530℃。
8. according to the method for claim 1, it is characterised in that：Gained decompression residuum is directly as straight asphalt or as tune
Close the raw material of road asphalt.
9. according to the method for claim 1, it is characterised in that：The catalytic slurry for distillate catalytic cracked oil pulp,
Oil slurry from catalytically cracked heavy oil, Residue Catalytic Cracking slurry oil or distillate mix one or more of refining Residue Catalytic Cracking slurry oil；
Wherein described residual oil includes one or more of reduced crude and decompression residuum, and the heavy oil handles to obtain for crude oil through plug
Heavy oil, distillate include one or more of vacuum gas oil (VGO) and AGO (atmospheric gas oil).
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| CN201610983412.0A CN108059970B (en) | 2016-11-09 | 2016-11-09 | Method for utilizing catalytic slurry oil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109320980A (en) * | 2018-09-30 | 2019-02-12 | 淮南师范学院 | A kind of preparation method of the modified slurry oil modified coal tar pitch of SBS |
| CN111978976A (en) * | 2019-12-19 | 2020-11-24 | 东营华联石油化工厂有限公司 | Method for improving distillate oil yield of atmospheric and vacuum distillation unit |
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| CN1635051A (en) * | 2003-12-25 | 2005-07-06 | 中国石油化工股份有限公司 | Asphalt aqueous emulsion and method for preparation |
| CN103554926A (en) * | 2013-10-16 | 2014-02-05 | 中国石油化工股份有限公司 | Low-strength and high-grade road asphalt and preparation method thereof |
| CN103773011A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Asphalt regenerant and preparation method thereof |
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2016
- 2016-11-09 CN CN201610983412.0A patent/CN108059970B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5076910A (en) * | 1990-09-28 | 1991-12-31 | Phillips Petroleum Company | Removal of particulate solids from a hot hydrocarbon slurry oil |
| CN1635051A (en) * | 2003-12-25 | 2005-07-06 | 中国石油化工股份有限公司 | Asphalt aqueous emulsion and method for preparation |
| CN103773011A (en) * | 2012-10-25 | 2014-05-07 | 中国石油化工股份有限公司 | Asphalt regenerant and preparation method thereof |
| CN103554926A (en) * | 2013-10-16 | 2014-02-05 | 中国石油化工股份有限公司 | Low-strength and high-grade road asphalt and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109320980A (en) * | 2018-09-30 | 2019-02-12 | 淮南师范学院 | A kind of preparation method of the modified slurry oil modified coal tar pitch of SBS |
| CN111978976A (en) * | 2019-12-19 | 2020-11-24 | 东营华联石油化工厂有限公司 | Method for improving distillate oil yield of atmospheric and vacuum distillation unit |
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| Publication number | Publication date |
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| CN108059970B (en) | 2020-03-17 |
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