CN109609167A - A method of promoting the pitch quickly oxidative stabilization of homogeneous - Google Patents
A method of promoting the pitch quickly oxidative stabilization of homogeneous Download PDFInfo
- Publication number
- CN109609167A CN109609167A CN201811460294.0A CN201811460294A CN109609167A CN 109609167 A CN109609167 A CN 109609167A CN 201811460294 A CN201811460294 A CN 201811460294A CN 109609167 A CN109609167 A CN 109609167A
- Authority
- CN
- China
- Prior art keywords
- pitch
- oxidation
- asphalt
- homogeneous
- oxidative stabilization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/02—Working-up pitch, asphalt, bitumen by chemical means reaction
- C10C3/04—Working-up pitch, asphalt, bitumen by chemical means reaction by blowing or oxidising, e.g. air, ozone
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Working-Up Tar And Pitch (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A kind of and method of the oxidative stabilization of homogeneous quick the present invention provides promotion pitch is to be uniformly mixed after the pitch that softening point is 60-130 DEG C is ground with oxidation accelerator, closing is heated to 80-150 DEG C, insulated and stirred mixes 0.5-3 h, cooling discharge grinding is sieved into 2-80 mesh particle, under air, with 20-100 DEG C of h‑1Oxidation heating rate, from room temperature to 220-300 DEG C, constant temperature 0-3 h, cooling obtains oxidized asphalt.The present invention has at low cost, oxidative stabilization time short advantage.
Description
Technical field
The invention belongs to the oxidative stabilization method of pitch, specially it is a kind of promote pitch quickly and homogeneous it is oxidation-stabilized
Change method.
Background technique
Oxidative stabilization is to maintain product form pattern in Pitch-based Carbon product preparation process and adjust the pass of microstructure
Key technique generallys use air purging to complete, it then follows radical reaction mechanism.Since oxygen spreads difficulty in bitumen base,
And pitch condensed ring molecule and oxygen reactionlessness, therefore it is longer the time required to pitch reaches stabilisation by air oxidation mode,
Reaction is difficult, and the difference that homogenizes.For example, 102391885 A of patent CN is dripped using coal tar of the air to no quinoline insolubles
Blueness carries out oxidative stabilization processing, and heating rate is 0.5-1.5 DEG C of min-1, the time is up to 12-22h.Patent CN
103272533 A oxidative stabilization in air atmosphere by bitumen ball, heating rate are 20-50 DEG C of h-1, the time is also up to
18-33h.Bitumen ball is put into revolving burner by 106115687 B of patent CN, is passed through air and is carried out oxidative stabilization, the time is extremely
Less in 13.5h or more.
For the oxidative stabilization for promoting pitch, the high softening-point that 1156123 A of patent CN is 200-300 DEG C in softening point
Aromatic solvent such as naphthalene and additive such as element sulphur are added in pitch, have both been increased oxygen diffusion admittance, and have been also promoted the life of free radical
At thus the oxidation for the substantially reducing asphaltic products non-fusible time.But naphthalene-is added to undesirably increase except the process of naphthalene
Equipment and process costs, additive sulfur can be with SO in oxidation process2Or SO3The form spilling of gas also can cause corruption to equipment
Erosion and generation environment pollution, and naphthalene and sulphur are also possible to stay in asphaltic products internal influence properties of product.Atsushi
Ishihara et al. [Carbonization Behavior of Hydrotreated Coal Tar Pitch Containing
Fine Molybdenum and Ruthenium Particles, Energy&Fuels 1996,10,726-732] by drip
Metal molybdenum and ruthenium fine grained are added in blueness promotes oxidation non-fusible, due to metal molybdenum under low temperature and the ruthenium fine grained property of can choose
Polycondensation reaction generation macromolecular occurs for low molecule in catalytic asphalt, reaches the infusible purpose of oxidation.But metallic particles plus
Enter, undoubtedly will increase the ash content of later period charcoal product, to influence the performance of Pitch-based Carbon product.In addition to this, overwhelming majority drip
Green base charcoal product is all made of high softening point bitumen as carbon precursor (softening point > 200 DEG C), it is therefore an objective to quickly oxidation-stabilized
Change, but this undoubtedly also increases preparation cost.
Summary of the invention
For prior art defect, the object of the present invention is to provide a kind of at low cost, the oxidative stabilization time is short with drip
Blueness is that presoma can significantly promote pitch quickly and the oxidative stabilization method of homogeneous.
Method of the invention, includes the following steps:
(1) selecting softening point is 60-130 DEG C of pitch as raw material, is mixed after being ground with oxidation accelerator
It is even, it is placed in autoclave, closing is heated to 80-150 DEG C, and insulated and stirred mixes 0.5-3h, changes to obtain the final product after cooling discharge
Property pitch；
(2) modified pitch ground, be sieved into 2-80 mesh particle, be placed in oxidation furnace, sweeping speed in air is 200-
800L h-1Under the conditions of, with 20-100 DEG C of h-1Oxidation heating rate, from room temperature to 220-300 DEG C, constant temperature 0-3h,
Cooling obtains oxidized asphalt.
As described above, the softening point of asphalt stock is preferably 80-120 DEG C.
As described above, oxidation accelerator is cumyl peroxide, p-Cumenylphenol, 2,3- dimethyl -2,3- bis-
One or both of phenyl butane, 2,4- diisopropyl phenol, wherein the mass ratio of oxidation accelerator and asphalt stock be
(1-20): 100, preferably (5-15): 100.
As described above, oxidation heating rate is preferably 50-80 DEG C of h-1。
The quick and homogeneous of oxidative stabilization of the present invention is by oxidative stabilization required time, in 800 DEG C of charing 1h items
The modes such as carbonization yield and individual particle crushing strength under part illustrate.
The invention has the following advantages over the prior art:
1. promotor can be generated free radicals in pitch intrinsic silicon by thermal decomposition in oxidation process, oxygen is no longer relied solely on
Diffusion and oxygen and pitch condensed ring molecule are reacted and are generated free radicals, so that modified pitch is rapidly achieved the oxidative stabilization of homogeneous
(its oxidative stabilization total time is lower than 11h)；
It 2. promotor itself is organic matter, similar to asphaltene molecule structure, can be uniformly mixed with pitch, be not required to increase removing
Promotor step will not generate ash content to later period asphalt carbon product；No corrosion in reaction process, reduce equipment at
This；
3. presoma of the present invention is using compared with low softening point asphalt, rather than traditional at present dripped using extra-high softening point
Green (being usually above 200 DEG C), the latter is not easy to buy on the market, and expensive；
4 use method of the invention, so that active carbon preparation cost reduces 50%-80%, in 800 DEG C of charing 1h conditions
Under carbonization yield be higher than 69.55% and individual particle crushing strength be higher than 8N.
Specific embodiment
Embodiment 1
Selecting softening point is 130 DEG C of pitch as raw material, after being ground with oxidation accelerator 2,4- diisopropyl benzene
Phenol (mass ratio of its additive amount and asphalt stock is 10:100) is uniformly mixed, and is placed in autoclave, closing is heated to 150
DEG C, insulated and stirred mixes 1h.Up to modified pitch after cooling discharge.By modified pitch grinding, 40 mesh particles are sieved into, are placed in oxygen
Change in furnace, sweeping speed in air is 200L h-1Under the conditions of, with 80 DEG C of h-1Oxidation heating rate from room temperature to 280 DEG C, it is permanent
Warm 3h, cooling obtain oxidized asphalt.Gained oxidized asphalt is 6.5h the time required to reaching stabilisation, and the yield for carbonizing pitch is
92.12% (under the conditions of 800 DEG C of charing 1h measured value, other embodiments and comparative example are identical), the crushing strength of individual particle is
18N。
Comparative example 1
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 29h, and the yield for carbonizing pitch is 79.43%, and individual particle crushing strength is 5N.
Embodiment 2
Selecting softening point is 100 DEG C of pitch as raw material, after being ground with oxidation accelerator cumyl peroxide
(mass ratio of its additive amount and asphalt stock is 6:100) is uniformly mixed, and is placed in autoclave, and closing is heated to 120 DEG C,
Insulated and stirred mixes 2h.Up to modified pitch after cooling discharge.By modified pitch grinding, 30 mesh particles are sieved into, are placed in oxidation
In furnace, sweeping speed in air is 300L h-1Under the conditions of, with 50 DEG C of h-1Oxidation heating rate from room temperature to 250 DEG C, constant temperature
1h, cooling obtain oxidized asphalt.Gained oxidized asphalt is 6h the time required to reaching stabilisation, and the yield for carbonizing pitch is
85.67%, individual particle crushing strength is 15N.
Comparative example 2
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 27h, and the yield for carbonizing pitch is 71.71%, and individual particle crushing strength is 4N.
Embodiment 3
Selecting softening point is 60 DEG C of pitch as raw material, after being ground with oxidation accelerator cumyl peroxide
(mass ratio of its additive amount and asphalt stock is 15:100) is uniformly mixed, and is placed in autoclave, and closing is heated to 80 DEG C,
Insulated and stirred mixes 3h.Up to modified pitch after cooling discharge.By modified pitch grinding, 80 mesh particles are sieved into, are placed in oxidation
In furnace, sweeping speed in air is 400L h-1Under the conditions of, with 20 DEG C of min-1Oxidation heating rate from room temperature to 220 DEG C, it is permanent
Warm 0h, cooling obtain oxidized asphalt.Gained oxidized asphalt is 11h the time required to reaching stabilisation, and the yield for carbonizing pitch is
75.55%, individual particle crushing strength is 8N.
Comparative example 3
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 23h, and the yield for carbonizing pitch is 61.12%, and individual particle crushing strength is 2N.
Embodiment 4
Selecting softening point is 120 DEG C of pitch as raw material, after being ground with oxidation accelerator 2,3- dimethyl -2,3-
Diphenyl butane (mass ratio of its additive amount and asphalt stock is 5:100) is uniformly mixed, and is placed in autoclave, closing adds
For heat to 140 DEG C, insulated and stirred mixes 0.5h.Up to modified pitch after cooling discharge.By modified pitch grinding, it is sieved into 20 mesh
Grain, is placed in oxidation furnace, and sweeping speed in air is 500L h-1Under the conditions of, with 70 DEG C of h-1Oxidation heating rate from room temperature
To 300 DEG C, constant temperature 2h, cooling obtains oxidized asphalt.Gained oxidized asphalt is 6.3h, charing drip the time required to reaching stabilisation
Green yield is 90.32%, and individual particle crushing strength is 17N.
Comparative example 4
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 31h, and the yield for carbonizing pitch is 75.26%, and individual particle crushing strength is 4N.
Embodiment 5
Selecting softening point is 80 DEG C of pitch as raw material, after being ground with oxidation accelerator cumyl peroxide and
Mixture (mass ratio of its additive amount and asphalt stock is 8:100) mixing of p-Cumenylphenol (mass ratio 3:1) is equal
It is even, it is placed in autoclave, closing is heated to 100 DEG C, and insulated and stirred mixes 1.5h.Up to modified pitch after cooling discharge.
By modified pitch grinding, 2 mesh particles are sieved into, are placed in oxidation furnace, sweeping speed in air is 600L h-1Under the conditions of, with 60 DEG C of h-1Oxidation heating rate from room temperature to 270 DEG C, constant temperature 0.5h, cooling i.e. obtain oxidized asphalt.Gained oxidized asphalt reaches
It is 5h the time required to stabilizing, the yield for carbonizing pitch is 73.46%, and the crushing strength of individual particle is 13N.
Comparative example 5
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 28h, and the yield for carbonizing pitch is 65.78%, and the crushing strength of individual particle is
2N。
Embodiment 6
Selecting softening point is 90 DEG C of pitch as raw material, after being ground with oxidation accelerator cumyl peroxide and
Mixture (mass ratio of its additive amount and asphalt stock is 18:100) mixing of p-Cumenylphenol (mass ratio 2:1) is equal
It is even, it is placed in autoclave, closing is heated to 110 DEG C, and insulated and stirred mixes 2.5h.Up to modified pitch after cooling discharge.
By modified pitch grinding, 40 mesh particles are sieved into, are placed in oxidation furnace, sweeping speed in air is 700L h-1Under the conditions of, with 40 DEG C
h-1Oxidation heating rate from room temperature to 230 DEG C, constant temperature 1.5h, cooling i.e. obtain oxidized asphalt.Gained oxidized asphalt reaches
It is 7.3h to required time is stabilized, the yield for carbonizing pitch is 77.41%, and the crushing strength of individual particle is 16N.
Comparative example 6
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining oxidized asphalt to reach stabilisation required time for the yield for for 24 hours, carbonizing pitch is 67.14%, and the crushing strength of individual particle is
3N。
Embodiment 7
Selecting softening point is 110 DEG C of pitch as raw material, after being ground with oxidation accelerator 2,3- dimethyl -2,3-
Mixture (the mass ratio of its additive amount and asphalt stock of diphenyl butane and 2,4- diisopropyl phenol (mass ratio 4:3)
It is uniformly mixed, is placed in autoclave for 19:100), closing is heated to 130 DEG C, and insulated and stirred mixes 1h.After cooling discharge
Up to modified pitch.By modified pitch grinding, 2 mesh particles are sieved into, are placed in oxidation furnace, sweeping speed in air is 800L h-1Item
Under part, with 100 DEG C of h-1Oxidation heating rate from room temperature to 260 DEG C, constant temperature 2.5h, cooling i.e. obtain oxidized asphalt.Institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 5.1h, and the yield for carbonizing pitch is 91.04%, and the crushing strength of individual particle is
20N。
Comparative example 7
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 27h, and the yield for carbonizing pitch is 77.71%, and the crushing strength of individual particle is
3N。
Embodiment 8
Selecting softening point is 70 DEG C of pitch as raw material, after being ground with oxidation accelerator p-Cumenylphenol
(mass ratio of its additive amount and asphalt stock is 7:100) is uniformly mixed, and is placed in autoclave, and closing is heated to 90 DEG C,
Insulated and stirred mixes 1.5h.Up to modified pitch after cooling discharge.By modified pitch grinding, 10 mesh particles are sieved into, are placed in oxygen
Change in furnace, sweeping speed in air is 400L h-1Under the conditions of, with 30 DEG C of h-1Oxidation heating rate from room temperature to 290 DEG C, it is permanent
Warm 0h, cooling obtain oxidized asphalt.Gained oxidized asphalt is 9.7h the time required to reaching stabilisation, and the yield for carbonizing pitch is
71.71%, the crushing strength of individual particle is 9N.
Comparative example 8
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 30h, and the yield for carbonizing pitch is 63.08%, and the crushing strength of individual particle is
2N。
Embodiment 9
Selecting softening point is 100 DEG C of pitch as raw material, after being ground with oxidation accelerator 2,3- dimethyl -2,3-
Diphenyl butane (mass ratio of its additive amount and asphalt stock is 20:100) is uniformly mixed, and is placed in autoclave, is closed
It is heated to 120 DEG C of mixing 2h.Cooling discharge is up to modified pitch.By modified pitch grinding, 80 mesh particles are sieved into, are placed in oxidation
In furnace, sweeping speed in air is 600L h-1Under the conditions of, with 90 DEG C of h-1Oxidation heating rate from room temperature to 240 DEG C, constant temperature
1h, cooling obtain oxidized asphalt.Gained oxidized asphalt is 3.7h the time required to reaching stabilisation, and the yield for carbonizing pitch is
89.47%, the crushing strength of individual particle is 16N.
Comparative example 9
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 25h, and the yield for carbonizing pitch is 73.26%, and the crushing strength of individual particle is
3N。
Embodiment 10
Selecting softening point is 80 DEG C of pitch as raw material, after being ground with oxidation accelerator cumyl peroxide
(mass ratio of its additive amount and asphalt stock is 14:100) is uniformly mixed, and is placed in autoclave, closing is heated to 100
DEG C, insulated and stirred mixes 2.5h.Up to modified pitch after cooling discharge.By modified pitch grinding, 20 mesh particles are sieved into, are placed in
In oxidation furnace, sweeping speed in air is 300L h-1Under the conditions of, with 50 DEG C of h-1Oxidation heating rate from room temperature to 220 DEG C,
Constant temperature 0.5h, cooling obtain oxidized asphalt.Gained oxidized asphalt is 4.9h the time required to reaching stabilisation, carbonizes the receipts of pitch
Rate is 69.55%, and the crushing strength of individual particle is 10N.
Comparative example 10
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 23h, and the yield for carbonizing pitch is 65.61%, and the crushing strength of individual particle is
2N。
Embodiment 11
Selecting softening point is 120 DEG C of pitch as raw material, after being ground with oxidation accelerator 2,4- diisopropyl benzene
Phenol (mass ratio of its additive amount and asphalt stock is 1:100) is uniformly mixed, and is placed in autoclave, closing is heated to 140
DEG C, insulated and stirred mixes 3h.Up to modified pitch after cooling discharge.By modified pitch grinding, 60 mesh particles are sieved into, are placed in oxygen
Change in furnace, sweeping speed in air is 200L h-1Under the conditions of, with 100 DEG C of h-1Oxidation heating rate from room temperature to 300 DEG C,
Constant temperature 2h, cooling obtain oxidized asphalt.Gained oxidized asphalt is 5h the time required to reaching stabilisation, and the yield for carbonizing pitch is
87.94%, the crushing strength of individual particle is 9N.
Comparative example 11
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 31h, and the yield for carbonizing pitch is 75.31%, and the crushing strength of individual particle is
5N。
Embodiment 12
Selecting softening point is 130 DEG C of pitch as raw material, after being ground with oxidation accelerator p-Cumenylphenol
(mass ratio of its additive amount and asphalt stock is with the mixture of 2,3- dimethyl -2,3- diphenyl butane (mass ratio 1:1)
It 15:100) is uniformly mixed, is placed in autoclave, closing is heated to 150 DEG C, and insulated and stirred mixes 1.5h.After cooling discharge
Up to modified pitch.By modified pitch grinding, 30 mesh particles are sieved into, are placed in oxidation furnace, sweeping speed in air is 800L h-1Item
Under part, with 80 DEG C of h-1Oxidation heating rate from room temperature to 280 DEG C, constant temperature 3h, cooling i.e. obtain oxidized asphalt.Gained
Oxidized asphalt is 6.5h the time required to reaching stabilisation, and the yield for carbonizing pitch is 91.66%, and the crushing strength of individual particle is
20N。
Comparative example 12
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 29h, and the yield for carbonizing pitch is 79.34%, and the crushing strength of individual particle is
5N。
Embodiment 13
Selecting softening point is 110 DEG C of pitch as raw material, after being ground with oxidation accelerator cumyl peroxide
It is mixed with the mixture (mass ratio of its additive amount and asphalt stock is 11:100) of 2,4- diisopropyl phenol (mass ratio 1:4)
It closes uniformly, is placed in autoclave, closing is heated to 130 DEG C, and insulated and stirred mixes 2.5h.Up to modified drip after cooling discharge
It is green.By modified pitch grinding, 70 mesh particles are sieved into, are placed in oxidation furnace, sweeping speed in air is 500L h-1Under the conditions of, with 70
℃ h-1Oxidation heating rate from room temperature to 260 DEG C, constant temperature 2.5h, cooling i.e. obtain oxidized asphalt.Gained oxidized asphalt
It is 6.3h the time required to reaching stabilisation, the yield for carbonizing pitch is 91.00%, and the crushing strength of individual particle is 9N.
Comparative example 13
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 27h, and the yield for carbonizing pitch is 77.59%, and the crushing strength of individual particle is
3N。
Embodiment 14
Selecting softening point is 90 DEG C of pitch as raw material, after being ground with oxidation accelerator cumyl peroxide
(mass ratio of its additive amount and asphalt stock is 9:100) is uniformly mixed, and is placed in autoclave, and closing is heated to 110 DEG C,
Insulated and stirred mixes 0.5h.Up to modified pitch after cooling discharge.By modified pitch grinding, 40 mesh particles are sieved into, are placed in oxygen
Change in furnace, sweeping speed in air is 700L h-1Under the conditions of, with 60 DEG C of h-1Oxidation heating rate from room temperature to 230 DEG C, it is permanent
Warm 1.5h, cooling obtain oxidized asphalt.Gained oxidized asphalt is 5.4h the time required to reaching stabilisation, carbonizes the yield of pitch
It is 77.48%, the crushing strength of individual particle is 8N.
Comparative example 14
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining oxidized asphalt to reach stabilisation required time for the yield for for 24 hours, carbonizing pitch is 67.31%, and the crushing strength of individual particle is
3N。
Embodiment 15
Selecting softening point is 70 DEG C of pitch as raw material, after being ground with oxidation accelerator cumyl peroxide
(mass ratio of its additive amount and asphalt stock is 7:100) is uniformly mixed, and is placed in autoclave, and closing is heated to 90 DEG C,
Insulated and stirred mixes 1h.Up to modified pitch after cooling discharge.By modified pitch grinding, 8 mesh particles are sieved into, are placed in oxidation furnace
In, sweeping speed in air is 600L h-1Under the conditions of, with 80 DEG C of h-1Oxidation heating rate from room temperature to 290 DEG C, constant temperature
0h, cooling obtain oxidized asphalt.Gained oxidized asphalt is 3.7h the time required to reaching stabilisation, and the yield for carbonizing pitch is
70.89%, the crushing strength of individual particle is 10N.
Comparative example 15
Using above-mentioned same softening point asphalt as raw material, oxidation accelerator is not added, keeps remaining process conditions constant, institute
Obtaining the time required to oxidized asphalt reaches stabilisation is 30h, and the yield for carbonizing pitch is 63.11%, and the crushing strength of individual particle is
2N。
Claims (6)
1. a kind of promotion pitch quickly and the method for the oxidative stabilization of homogeneous, it is characterised in that include the following steps:
(1) selecting softening point is 60-130 DEG C of pitch as raw material, is uniformly mixed, is placed in oxidation accelerator after being ground
In autoclave, closing is heated to 80-150 DEG C, and insulated and stirred mixes 0.5-3 h, up to modified pitch after cooling discharge；
(2) modified pitch ground, be sieved into 2-80 mesh particle, be placed in oxidation furnace, sweeping speed in air is 200-800 L h-1
Under the conditions of, with 20-100 DEG C of h-1Oxidation heating rate, from room temperature to 220-300 DEG C, constant temperature 0-3 h, cooling is obtained
Oxidized asphalt.
2. a kind of promotions pitch as described in claim 1 is quick and the method for the oxidative stabilization of homogeneous, it is characterised in that institute
The softening point for stating asphalt stock is 80-120 DEG C.
3. a kind of promotions pitch as described in claim 1 is quick and the method for the oxidative stabilization of homogeneous, it is characterised in that institute
Stating oxidation accelerator is cumyl peroxide, p-Cumenylphenol, 2,3- dimethyl -2,3- diphenyl butane, 2,4- bis-
One or both of isopropyl-phenol.
4. a kind of promotions pitch as described in claim 1 is quick and the method for the oxidative stabilization of homogeneous, it is characterised in that oxygen
The mass ratio for changing promotor and asphalt stock is 1-20:100.
5. a kind of promotions pitch as claimed in claim 4 is quick and the method for the oxidative stabilization of homogeneous, it is characterised in that oxygen
The mass ratio for changing promotor and asphalt stock is preferably 5-15:100.
6. a kind of promotions pitch as described in claim 1 is quick and the method for the oxidative stabilization of homogeneous, it is characterised in that institute
Stating oxidation heating rate is 50-80 DEG C of h-1。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811460294.0A CN109609167B (en) | 2018-11-30 | 2018-11-30 | Method for promoting rapid and homogeneous oxidation stabilization of asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811460294.0A CN109609167B (en) | 2018-11-30 | 2018-11-30 | Method for promoting rapid and homogeneous oxidation stabilization of asphalt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109609167A true CN109609167A (en) | 2019-04-12 |
| CN109609167B CN109609167B (en) | 2020-09-22 |
Family
ID=66006756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811460294.0A Active CN109609167B (en) | 2018-11-30 | 2018-11-30 | Method for promoting rapid and homogeneous oxidation stabilization of asphalt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109609167B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110317621A (en) * | 2019-06-25 | 2019-10-11 | 中国科学院山西煤炭化学研究所 | A kind of collaboration of multikey is controllable promote in the stabilized method of soft pitch |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1156123A (en) * | 1996-02-02 | 1997-08-06 | 中国科学院山西煤炭化学研究所 | Method for improving non-melting process of asphalt balls |
| CN1480398A (en) * | 2003-07-18 | 2004-03-10 | 中国科学院山西煤炭化学研究所 | Method for preparing spherical active cardon with base of asphaltum riched in mesopores |
| CN104030287A (en) * | 2014-07-09 | 2014-09-10 | 四川创越炭材料有限公司 | Spherical activated carbon and preparation method thereof |
| CN104909365A (en) * | 2015-06-09 | 2015-09-16 | 中国科学院山西煤炭化学研究所 | Method for promoting asphalt sphere oxidation without melting |
| CN104927373A (en) * | 2015-06-30 | 2015-09-23 | 青岛麦科三维高新技术有限公司 | SBS (styrene butadiene styrene) modified asphalt stabilizing agent |
| JP2016074995A (en) * | 2014-10-06 | 2016-05-12 | ジーエス カルテックス コーポレイション | Method for producing pitch for carbon fiber and pitch for carbon fiber obtained thereby |
-
2018
- 2018-11-30 CN CN201811460294.0A patent/CN109609167B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1156123A (en) * | 1996-02-02 | 1997-08-06 | 中国科学院山西煤炭化学研究所 | Method for improving non-melting process of asphalt balls |
| CN1480398A (en) * | 2003-07-18 | 2004-03-10 | 中国科学院山西煤炭化学研究所 | Method for preparing spherical active cardon with base of asphaltum riched in mesopores |
| CN104030287A (en) * | 2014-07-09 | 2014-09-10 | 四川创越炭材料有限公司 | Spherical activated carbon and preparation method thereof |
| JP2016074995A (en) * | 2014-10-06 | 2016-05-12 | ジーエス カルテックス コーポレイション | Method for producing pitch for carbon fiber and pitch for carbon fiber obtained thereby |
| CN104909365A (en) * | 2015-06-09 | 2015-09-16 | 中国科学院山西煤炭化学研究所 | Method for promoting asphalt sphere oxidation without melting |
| CN104927373A (en) * | 2015-06-30 | 2015-09-23 | 青岛麦科三维高新技术有限公司 | SBS (styrene butadiene styrene) modified asphalt stabilizing agent |
Non-Patent Citations (2)
| Title |
|---|
| 吕春祥: "溶剂处理对沥青球氧化稳定化的影响研究", 《新型炭材料》 * |
| 郭源: "煤沥青球的氧化不熔化过程特性", 《化工学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110317621A (en) * | 2019-06-25 | 2019-10-11 | 中国科学院山西煤炭化学研究所 | A kind of collaboration of multikey is controllable promote in the stabilized method of soft pitch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109609167B (en) | 2020-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104528725A (en) | Preparation method of magnetic silicon carbide ceramic nano particles | |
| CN101462722B (en) | Method for preparing titanium carbide ceramic powder | |
| CN109609167A (en) | A method of promoting the pitch quickly oxidative stabilization of homogeneous | |
| CN106082740A (en) | A kind of asphalt pavement material that microwave heating can be used quickly to repair | |
| WO2011032354A1 (en) | External combustion and internal heating type coal retort furnace | |
| Leng et al. | Effect of high-temperature and microwave expanding modification on reactivity of coal char for char-NO interaction | |
| CN111518973A (en) | Multi-element mixed semi-coke powder for steelmaking blast furnace injection raw material | |
| JP5487790B2 (en) | Ferro-coke manufacturing method | |
| Niu et al. | A comprehensive investigation on the chemical structure character of spinnable pitch for improving and optimizing the oxidative stabilization of coal tar pitch-based fiber | |
| JP4308740B2 (en) | Hybrid reactor and high-functional material manufacturing method using the same | |
| KR101267686B1 (en) | Mixing method of coal for making cokes | |
| CN101691492A (en) | Coal carbonization technology | |
| KR101597716B1 (en) | Method for preparation of mixing powdered coal | |
| EP2729412B1 (en) | Process for the preparation of silicon carbide | |
| CN108059970A (en) | A kind of Application way of catalytic slurry | |
| Chokai et al. | Preparation of carbon alloy catalysts from a polyhydroxyamide with iron phthalocyanine via a poly-biphenylenebisoxazole composite | |
| KR20140049760A (en) | Method for manufacturing coke | |
| WO2018008339A1 (en) | Method for refining low-rank coal, method for producing coke, and method for producing pig iron | |
| KR101485655B1 (en) | Process for production of coke | |
| KR20190078970A (en) | Method for preparing high resistivity carbon black and carbon black prepared thereby | |
| JP6464912B2 (en) | Coke production method | |
| KR20200133520A (en) | Method for manufacturing isotropic pitch from low-grade coal and ashfreechol and method for application of manufacturing low-cost high-strength isotropic carbon fiber using the same | |
| CN108675278A (en) | A kind of nano carbon microsphere and preparation method thereof prepared by coal tar asphalt | |
| Santos et al. | Biochar production from cellulose under reductant atmosphere: influence of the total pyrolysis time | |
| KR101503443B1 (en) | Composition for cokes and method of manufacturing the cokes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |