CN104559253B - Improve the preparation method of asphalt performance using coal directly-liquefied residue - Google Patents
Improve the preparation method of asphalt performance using coal directly-liquefied residue Download PDFInfo
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Abstract
The present invention relates to the use of coal directly-liquefied residue improves the preparation method of asphalt performance, belongs to bi tumenf orr oad engineering field.The present invention is suitable for 5~10% graininess coal directly-liquefied residue and 2~3% rubber oils are added to matrix pitch, by (150~160 DEG C) stirrings of high temperature, so as to excellent, the cheap coal directly-liquefied residue modified pitch of processability, the added value of coal directly-liquefied residue is improved.Because coal directly-liquefied residue, rubber oil and asphalt belong to material of the same race, compatibility is good, segregation phenomenon will not be produced, simultaneously, improve price of the price well below traditional SBS modified pitch of asphalt performance using coal directly-liquefied residue, therefore, the present invention is a kind of economical and practical technical method.
Description
Technical field
The present invention relates to the use of coal directly-liquefied residue improves the preparation method of asphalt performance, in particulars relate to one kind and passes through
Coal directly-liquefied residue is added in pitch to improve the preparation method of asphalt performance.
Background technology
Coal direct liquefaction is in high temperature (more than 400 DEG C), high pressure (more than 10MPa), under catalysts and solvents effect
The molecule of coal is carried out Hydrocracking, be directly translated into liquid fuel, further processing and refining is into fuel such as gasoline, diesel oil
Oil, also known as hydrogenation liquefaction.During DCL/Direct coal liquefaction, 30% byproduct can be produced --- residue, i.e. DCL/Direct coal liquefaction are residual
Slag.
The composition and property of coal directly-liquefied residue depend on species, liquefaction process condition and the separation of solid and liquid of liquefaction coal
Method, wherein determinant are solid-liquid separating methods, and my excessively most of liquefaction process tend to using vacuum distillation separation at present
Technology.Coal directly-liquefied residue is the material of a kind of high charcoal, high-sulfur and high ash, contains up to 30%~50% heavy oil and pitch
Alkenes product, can be using it using the modifying agent as pitch, to improve the performance of pitch.
Rubber oil is a kind of dark thick liquid, is abstracted from crude oil.Rubber oil has a good compatibility, high temperature resistant,
The features such as low volatilization, it can be used for the anti-aging and cryogenic property for increasing pitch as auxiliary agent.
The conventional modifying agent for improving asphalt performance at present is the macromolecule modifiers such as SBS, SBR, EVA and PE.Due to these
Modifying agent is a kind of high polymer material in itself, is not easy compatible with pitch, segregation phenomenon can be produced with pitch when serious, so as to not only
The performance of pitch will not be improved, can also play a part of destroying asphalt performance.Meanwhile the macromolecule such as SBS, SBR, EVA and PE changes
The price of property agent is higher, easily causes the cost of pitch to increase considerably.
Zhu Weiping " research of coal directly-liquefied residue modified pitch " text in have studied coal directly-liquefied residue addition,
The influence of compounding process and compounding temperature to asphalt performance, but using 25 DEG C of ductilities, this point with《Asphalt highway is constructed
Technical specification》(JTG F40-2004) is not consistent to the cryogenic property index (5 DEG C of ductilities) of modified pitch, therefore can not judge
Improvement of the coal directly-liquefied residue to pitch cryogenic property.
King stockaded village rosy clouds etc. have studied difference in " preliminary assessment that coal directly-liquefied residue is acted on modifying road asphalt " text
Influence of the coal directly-liquefied residue under 7% addition to asphalt performance, but still using 25 DEG C of ductilities, this point with《It is public
Road Asphalt Pavement Construction Technique specification》(JTG F40-2004) is not consistent to the cryogenic property index (5 DEG C of ductilities) of modified pitch,
Therefore improvement of the coal directly-liquefied residue to pitch cryogenic property can not be judged.
In a word, it is existing at present to coal directly-liquefied residue as in research of the modifying agent to improve asphalt performance, greatly
The index for the reflection pitch cryogenic property that majority uses is incorrect, can not correctly judge low temperature of the coal directly-liquefied residue to pitch
Improvement.Therefore, it is quite necessary to develop a kind of preparation technology for improving asphalt performance comprehensively, prior art and economy are overcome
The defects of.
The content of the invention
Problem to be solved by this invention is：A kind of preparation method is provided, can effectively improve the performance of pitch comprehensively.
The purpose of the present invention is achieved through the following technical solutions：
From coal directly-liquefied residue as modifying agent, rubber oil is as auxiliary agent, the coal of addition optimum amount in pitch
Direct liquefaction residue and rubber oil, improve the performance of pitch comprehensively, and make technology of its performance close to or up SBS modified pitch
Standard.
Due to by the use of coal directly-liquefied residue as modifying agent and rubber oil as auxiliary agent, wherein coal directly-liquefied residue its
Containing up to 30%~50% heavy oil and pitch alkenes product, and rubber oil is aromatic hydrocarbons type material, and and pitch belongs to similar
Material.According to " compatible similar " principle, segregation phenomenon will not be produced between coal directly-liquefied residue, rubber oil and pitch.Meanwhile
Because coal directly-liquefied residue can improve the high-temperature behavior of pitch, and rubber oil can strengthen the ductility of pitch, thus can show
Writing improves the high temperature and cryogenic property of pitch；Further, since coal directly-liquefied residue existing market price is 800 yuan/ton or so,
And the existing market price of SBS modifier is 20,000 yuan/ton or so, comparatively, change by the use of coal directly-liquefied residue as pitch
Property agent will not significantly improve the cost of pitch, and the technology of the present invention has more economy.
Specific implementation step is：
Step 1：The technical indicator of coal directly-liquefied residue is tested, its content of ashes of stress test, ensures DCL/Direct coal liquefaction
The content of ashes of residue is less than 10%；
Step 2：Coal directly-liquefied residue is crushed in atomizer mill, the particle diameter after crushing is not more than 2mm；
Step 3：The technical indicator of test matrix pitch, ensure that its technical indicator meets《Asphalt highway construction skill
Art specification》Relevant regulations in (JTG F40-2004)；
Step 4：5~10% coal directly-liquefied residue is added in pitch and is well mixed, then add 2~
3% rubber oil, test mixing uniformly after pitch technical indicator, ensure its technical indicator meet《Asphalt highway is applied
Work technical specification》Relevant regulations in (JTG F40-2004)；If the performance indications of pitch are unsatisfactory for after mixing《Highway asphalt
Pavement construction technical specification》Relevant regulations in (JTG F40-2004), then need to readjust coal directly-liquefied residue and rubber
The ratio of glue oil, untill it meets relevant regulations, and determines the optimum amount of coal directly-liquefied residue and rubber oil.
Step 5：It is prepared by product：150~160 DEG C of matrix pitch is squeezed into retort, the coal added under optimum amount
Direct liquefaction residue, retort is incubated at 150~160 DEG C, starts stirring, stirred 0.5~1h, then add optimum amount
Under rubber oil, continue 0.5~1h of stirring, carry out quality inspection it is qualified after coal directly-liquefied residue modified pitch finished product.
The method for determining optimum amount is：By 5%, 6%, 7%, 8%, 10% graininess coal directly-liquefied residue and
2%th, 2.5%, 3% rubber oil, which intersects, coordinates, and forms 15 kinds of mixing ratios, is added separately in matrix pitch, after test mixing
The technical indicator of pitch, the mixing ratio for wherein meeting technical requirements is chosen, carry out econmics comparison, its economy is optimal to match somebody with somebody
The coal directly-liquefied residue and rubber oil dosage of composition and division in a proportion example are optimum amount.
The present invention improves the performance of pitch as modifying agent and rubber oil using coal directly-liquefied residue as auxiliary agent, by
Compatibility between coal directly-liquefied residue, rubber oil and pitch is good, will not produce segregation phenomenon, can improve pitch comprehensively
Performance.Meanwhile using coal directly-liquefied residue as modifying agent, valency of its price well below traditional SBS modifier
Lattice, therefore, the present invention are a kind of economical and practical technical methods.
Embodiment
Below in conjunction with instantiation, the present invention will be further described, but present disclosure be not limited solely to it is following
Embodiment.
Embodiment 1
Step 1：The technical indicator of coal directly-liquefied residue and rubber oil is tested, the results are shown in Table 1 and table 2.
The performance indications of the coal directly-liquefied residue of table 1.
TFOT residues (163 DEG C, 5h)
As shown in Table 1：The content of ashes of coal directly-liquefied residue is less than 10%.
The performance indications of the rubber oil of table 2
The performance indications of the rubber oil of table 2
Step 2：Coal directly-liquefied residue is crushed in atomizer mill, the particle diameter after crushing is not more than 2mm；
Step 3：The technical indicator of No. 70 bi tumenf orr oads is tested, the results are shown in Table 3.
The performance indications of No. 3.70 bi tumenf orr oads of table
The performance indications of No. 3.70 bi tumenf orr oads of table
As shown in Table 3：No. 70 bi tumenf orr oad performance indications are satisfied by《Standard specification for construction and acceptance of highway asphalt pavement》JTG
The technical requirements of No. 70 related bi tumenf orr oads in F40-2004.
Step 3：7% coal directly-liquefied residue is added in pitch and is well mixed, Ran Houzai (with pitch weight ratio)
Add 2% rubber oil (with pitch weight ratio), test mixing uniformly after pitch technical indicator, be shown in Table 4.
The performance indications of pitch after table 4. is well mixed
The performance indications of pitch after table 4. is well mixed
As shown in Table 4：The technical indicator of pitch is satisfied by after well mixed《Standard specification for construction and acceptance of highway asphalt pavement》JTG
In F40-2004 in related SBS modified pitch I-D technical requirements.
Step 4：Product processing.150~160 DEG C of matrix pitch is squeezed into retort, adds 7% DCL/Direct coal liquefaction
Residue, retort is incubated at 150~160 DEG C, starts stirring, stirred 0.5~1h, then add 2% rubber oil, continue to stir
Mix 0.5~1h, carry out quality inspection it is qualified after coal directly-liquefied residue modified pitch finished product.
Embodiment 2
Step 1：The technical indicator of coal directly-liquefied residue and rubber oil is tested, the results are shown in Table 5 and table 6.
The performance indications of the coal directly-liquefied residue of table 5
The performance indications of the coal directly-liquefied residue of table 5
TFOT residues (163 DEG C, 5h)
As shown in Table 5：The content of ashes of coal directly-liquefied residue is less than 10%.
The performance indications of the rubber oil of table 6
The performance indications of the rubber oil of table 6
Step 2：Coal directly-liquefied residue is crushed in atomizer mill, the particle diameter after crushing is not more than 2mm；
Step 3：The technical indicator of No. 90 bi tumenf orr oads is tested, the results are shown in Table 7.
The performance indications of No. 7.90 bi tumenf orr oads of table
The performance indications of No. 790 bi tumenf orr oads of table
As shown in Table 7：No. 90 bi tumenf orr oad performance indications are satisfied by《Standard specification for construction and acceptance of highway asphalt pavement》JTG
The technical requirements of No. 90 related bi tumenf orr oads in F40-2004.
Step 4：8% coal directly-liquefied residue is added in pitch and is well mixed, Ran Houzai (with pitch weight ratio)
Add 2.5% rubber oil (with pitch weight ratio), test mixing uniformly after pitch technical indicator, be shown in Table 8.
The performance indications of pitch after table 8 is well mixed
The performance indications of pitch after table 8 is well mixed
As shown in Table 8：The technical indicator of pitch is satisfied by after well mixed《Standard specification for construction and acceptance of highway asphalt pavement》JTG
Related SBS modified pitch I-C technical requirements in F40-2004.
Step 5：Product processing.150~160 DEG C of matrix pitch is squeezed into retort, adds the 8% direct liquid of coal
Change residue, retort is incubated at 150~160 DEG C, start stirring, stir 0.5~1h, then add 2.5% rubber oil, after
0.5~1h of continuous stirring, carry out quality inspection it is qualified after coal directly-liquefied residue modified pitch finished product.
Claims (6)
1. improve the preparation method of asphalt performance using coal directly-liquefied residue, it is characterised in that comprise the following steps：
Step 1：Every characteristic of coal directly-liquefied residue and matrix pitch is tested, the ash content of wherein coal directly-liquefied residue contains
Amount is less than or equal to 6.6%；
Step 2：Coal directly-liquefied residue is processed into the graininess that grain diameter is less than 2mm in atomizer mill；
Step 3：5 ~ 8% graininess coal directly-liquefied residue is added in 150 ~ 160 DEG C of matrix pitches and is well mixed, its
In, graininess coal directly-liquefied residue is directly added into, it is not necessary to it is heated, then adds 2 ~ 3% rubber oils, is tested
The technical indicator of pitch after mixing, determine the optimum amount of coal directly-liquefied residue and rubber oil；
Step 4：It is prepared by product：150 ~ 160 DEG C of matrix pitch is squeezed into retort, the graininess added under optimum amount
Coal directly-liquefied residue, retort is incubated at 150 ~ 160 DEG C, starts stirring, stirred 0.5~1h, then add optimal use
The lower rubber oil of amount, continues 0.5~1h of stirring, carry out quality inspection it is qualified afterwards coal directly-liquefied residue modified pitch into
Product.
2. the preparation method according to claim 1 for improving asphalt performance using coal directly-liquefied residue, it is characterized in that really
The method for determining optimum amount is：By 5%, 6%, 7%, 8%, 10% graininess coal directly-liquefied residue and 2%, 2.5%, 3% rubber oil
Intersect and coordinate, form 15 kinds of mixing ratios, be added separately in matrix pitch, the technical indicator of pitch after test mixing, choose
Wherein meet the mixing ratio of technical requirements, carry out price comparison, the coal directly-liquefied residue of its cheapest mixing ratio
It is optimum amount with rubber oil dosage.
3. the preparation method according to claim 2 for improving asphalt performance using coal directly-liquefied residue, it is characterised in that
The optimum amount of the graininess coal directly-liquefied residue is 7%, and the optimum amount of the rubber oil is 2%.
4. the preparation method according to claim 3 for improving asphalt performance using coal directly-liquefied residue, it is characterised in that
The technical indicator for the modified pitch being prepared using the graininess coal directly-liquefied residue is met《Asphalt highway is constructed
Technical specification》In JTG F40-2004 in SBS modified pitch I-D technical requirements.
5. the preparation method according to claim 2 for improving asphalt performance using coal directly-liquefied residue, it is characterised in that
The optimum amount of the graininess coal directly-liquefied residue is 8%, and the optimum amount of the rubber oil is 2.5%.
6. the preparation method according to claim 5 for improving asphalt performance using coal directly-liquefied residue, utilizes described
The technical indicator for the modified pitch that granular coal directly-liquefied residue is prepared meets《Standard specification for construction and acceptance of highway asphalt pavement》
SBS modified pitch I-C technical requirements in JTG F40-2004.
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| CN105802652B (en) * | 2016-05-23 | 2019-04-05 | 神华集团有限责任公司 | A kind of coal liquefaction residue modified pitch and its preparation method and application |
| CN106380105B (en) * | 2016-08-30 | 2018-08-17 | 长安大学 | A kind of bituminous concrete outer-penetrating agent and preparation method thereof |
| CN106433166A (en) * | 2016-09-30 | 2017-02-22 | 陕西延长石油（集团）有限责任公司炼化公司 | Coal-based asphaltic sand-modified asphalt and preparation method thereof |
| CN107488351A (en) * | 2017-08-17 | 2017-12-19 | 江苏诺路桥工程检测有限公司 | Pouring asphalt cementitious matter prepared by a kind of coal liquefaction residue and preparation method thereof |
| CN109593369B (en) * | 2017-09-30 | 2022-06-21 | 国家能源投资集团有限责任公司 | Road asphalt modifier, modified road asphalt, preparation method of modified road asphalt and asphalt mixture |
| CN109777131B (en) * | 2017-11-15 | 2021-08-17 | 国家能源投资集团有限责任公司 | Method for modifying coal direct liquefaction asphalt, modified coal direct liquefaction asphalt and application thereof |
| CN109251539A (en) * | 2018-07-27 | 2019-01-22 | 北京建筑大学 | A kind of pair of coal directly-liquefied residue modified pitch carries out the physical method of increase-volume |
| CN110358317A (en) * | 2019-08-07 | 2019-10-22 | 交通运输部公路科学研究所 | Coal liquefaction residue is used as the preparation method of road asphalt modifier |
| CN114479491A (en) * | 2021-12-14 | 2022-05-13 | 中路高科(北京)公路技术有限公司 | High-modulus asphalt containing coal liquefied asphalt and preparation method and application thereof |
| CN116004020A (en) * | 2022-12-16 | 2023-04-25 | 广州市北二环交通科技有限公司 | Preparation method of self-healing pre-curing asphalt |
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| CN101735627A (en) * | 2010-01-11 | 2010-06-16 | 山东高速建设材料有限公司 | Waterproof material and preparation method thereof |
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| DE2839461A1 (en) * | 1978-09-11 | 1980-03-27 | Bergwerksverband Gmbh | MOLDS FROM THERMOPLASTIC PLASTICS AND RESIDUES OF CARBOHYDRATION |
| CN100439449C (en) * | 2006-03-30 | 2008-12-03 | 中国科学院山西煤炭化学研究所 | Road asphalt modifier and utilization method thereof |
| CN102532926A (en) * | 2012-02-09 | 2012-07-04 | 镇江金阳道路材料科技发展有限公司 | Asphalt modifier for improving low temperature ductility and preparation method thereof |
| CN102775956B (en) * | 2012-08-08 | 2013-12-04 | 中国建筑材料科学研究总院苏州防水研究院 | Asphalt-based non-curable heat-resistant waterproof sealant and preparation method thereof |
| CN103275501B (en) * | 2013-06-08 | 2016-01-20 | 湖南云中再生科技股份有限公司 | For bitumen regenerant that regenerating waste asphalt utilizes and its preparation method and application |
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| CN101735627A (en) * | 2010-01-11 | 2010-06-16 | 山东高速建设材料有限公司 | Waterproof material and preparation method thereof |
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