CN110295050B - Method for producing medium-temperature asphalt by mixing - Google Patents
Method for producing medium-temperature asphalt by mixing Download PDFInfo
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- CN110295050B CN110295050B CN201910554486.6A CN201910554486A CN110295050B CN 110295050 B CN110295050 B CN 110295050B CN 201910554486 A CN201910554486 A CN 201910554486A CN 110295050 B CN110295050 B CN 110295050B
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- asphalt
- oil
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- raw
- byproduct
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- 239000010426 asphalt Substances 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000002156 mixing Methods 0.000 title claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 46
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 45
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000126 substance Substances 0.000 claims abstract description 29
- 239000006227 byproduct Substances 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000004821 distillation Methods 0.000 claims abstract description 6
- 238000009833 condensation Methods 0.000 claims abstract description 3
- 230000005494 condensation Effects 0.000 claims abstract description 3
- 239000011269 tar Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 11
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 10
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 claims description 10
- 238000004939 coking Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 3
- 239000011311 coal-based needle coke Substances 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 239000011280 coal tar Substances 0.000 claims description 2
- 239000011331 needle coke Substances 0.000 description 7
- 238000005303 weighing Methods 0.000 description 6
- 238000012216 screening Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000011300 coal pitch Substances 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009845 electric arc furnace steelmaking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011301 petroleum pitch Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
- C10C1/00—Working-up tar
- C10C1/04—Working-up tar by distillation
- C10C1/16—Winning of pitch
-
- 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
- C10C3/005—Working-up pitch, asphalt, bitumen by mixing several fractions (also coaltar fractions with petroleum fractions)
-
- 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
- C10C3/007—Working-up pitch, asphalt, bitumen winning and separation of asphalt from mixtures with aggregates, fillers and other products, e.g. winning from natural asphalt and regeneration of waste asphalt
-
- 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
- C10C3/06—Working-up pitch, asphalt, bitumen by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Working-Up Tar And Pitch (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a method for producing medium-temperature asphalt by mixing, which comprises the following steps: raw material oil is prepared by mixing raw material tar and byproduct asphalt in a mass ratio of 5:1 to 15:1, the raw material oil is heated to 70-80 ℃, the density and viscosity of the raw material oil are measured, and then toluene insoluble substances and quinoline insoluble substances are measured; distilling with a raw material tar distillation range tester, respectively receiving the light components by a condensation cooling container, and obtaining the asphalt after the light components are completely distilled out. The advantages are that: the byproduct asphalt is added into the raw material tar, namely the byproduct asphalt replaces a part of the raw material tar, so that the ton cost for producing the medium-temperature asphalt can be reduced, the consumption of the raw material tar is also saved, the saved raw material tar can be used for continuously producing the medium-temperature asphalt, and the yield of the medium-temperature asphalt can be improved.
Description
Technical Field
The invention relates to a method for producing medium-temperature asphalt by mixing, in particular to a method for producing medium-temperature asphalt by taking asphalt which is a byproduct in coal-based needle coke production as a raw material.
Background
The needle coke is a novel carbon material which is vigorously developed in the 70 th century in the 20 th century, has the characteristics of low resistivity, low thermal expansion coefficient, strong heat resistance, oxidation resistance and the like, becomes a good material for producing high-power and ultrahigh-power graphite electrodes, is applied to electric arc furnace steelmaking, aluminum smelting and the like, and has huge application prospects in the fields of super capacitors, high-energy secondary batteries and the like at present. The graphite electrode made of needle coke has the advantages of strong thermal shock resistance, high mechanical strength, good oxidation performance, low electrode consumption and the like, the production raw materials comprise coal pitch and petroleum pitch, and the needle coke is divided into coal-series needle coke and oil-series needle coke according to the difference of the raw materials.
The production process of coal-series needle coke from soft asphalt in a chemical plant comprises the steps of raw material pretreatment, delayed coking and calcination, wherein the raw material pretreatment is carried out by adopting a solvent method, the purpose is to remove quinoline insoluble substances in coal tar pitch, and then refined pitch meeting the production requirement of needle coke is obtained through heat treatment, a large amount of byproduct asphalt is generated in the process, about 2000 tons of asphalt is generated every year, and the indexes of the byproduct asphalt are close to those of medium-temperature asphalt except for high toluene insoluble substances and high quinoline insoluble substances, so that the production of medium-temperature asphalt by using the byproduct asphalt as a raw material becomes possible.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method for producing medium-temperature asphalt by mixing, which realizes the reutilization of by-product asphalt, reduces the cost of the medium-temperature asphalt and improves the yield of the medium-temperature asphalt.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a method for producing medium-temperature asphalt by compounding comprises the following steps:
1) raw material oil is prepared by mixing raw material tar and byproduct asphalt in a mass ratio of 5:1 to 15:1, the raw material oil is heated to 70-80 ℃, the density and viscosity of the raw material oil are measured, and then toluene insoluble substances and quinoline insoluble substances are measured; the density of the raw oil is 1.12-1.20g/cm3The viscosity of the raw oil is less than 4 mPas, the mass percent of quinoline insoluble substances is less than 2 percent, and the mass percent of toluene insoluble substances is 1-10 percent;
2) distilling the mixed raw oil by using a raw material tar distillation range tester, respectively receiving the amount of each light component by using a condensation cooling container, distilling light oil when the raw oil is heated to 170 ℃, distilling phenol oil when the raw oil is heated to 170-210 ℃, distilling naphthalene oil when the raw oil is heated to 210-230 ℃, distilling wash oil when the raw oil is heated to 230-300 ℃, distilling anthracene oil when the raw oil is heated to 300-360 ℃, and obtaining the medium-temperature asphalt after all the light components are distilled.
The byproduct asphalt is prepared by performing raw material pretreatment, delayed coking and calcination processes when the coal-based needle coke is produced by using the maltha, removing quinoline insoluble substances in the coal tar asphalt by adopting a solvent method, and then performing heat treatment to obtain refined asphalt, wherein a large amount of byproduct asphalt is generated in the process, the softening point of the byproduct asphalt is 80-90 ℃, the mass percentage of the toluene insoluble substances is 20-30%, the mass percentage of the quinoline insoluble substances is 10-20%, and the coking value is more than or equal to 45%.
Compared with the prior art, the invention has the beneficial effects that:
the method for producing the medium-temperature asphalt by mixing adds the byproduct asphalt into the raw material tar, namely the byproduct asphalt replaces a part of the raw material tar, and the price of the byproduct asphalt is lower than that of the raw material tar, so the technology can reduce the ton cost for producing the medium-temperature asphalt, also saves the consumption of the raw material tar, and the saved raw material tar can continue to produce the medium-temperature asphalt, thereby improving the yield of the medium-temperature asphalt, having higher safety and being beneficial to engineering popularization. The softening point of the obtained medium-temperature asphalt is 80-90 ℃, the mass percent of toluene insoluble substances in the asphalt is 15-25%, the mass percent of quinoline insoluble substances in the asphalt is less than or equal to 10%, and the coking value of the asphalt is more than or equal to 45%.
Detailed Description
The present invention is described in detail below, but it should be noted that the practice of the present invention is not limited to the following embodiments.
Example 1
The raw material tar of each recovery workshop of a certain chemical plant is mixed in a raw material tank of a tar refining workshop, the light components contained in the raw material tar of each recovery workshop are different, and the mixed raw material tar is used as a raw material for producing medium-temperature pitch. Taking raw material tar and byproduct asphalt as raw materials, and adopting the following steps: 1, weighing 500g of raw tar, heating to 80 ℃, crushing the byproduct asphalt, screening by using a 20-mesh sieve, and adding 100g of the byproduct asphalt to mix into the raw oil; stirring all the time in the process to mix uniformly, and then measuring the density to be 1.142g/cm3And a viscosity of 3.55 mPas; the toluene insoluble 1.95% and quinoline insoluble 1.87% were again determined; weighing 100ml of mixed raw oil, distilling with a raw material tar distillation range tester, respectively receiving the light components in a cooling container, heating to 170 deg.C to obtain light oil distillate of 2.23%, phenol oil distillate of 1.21% in 170-210 deg.C range, naphthalene oil distillate of 6.32% in 210-230 deg.C range, wash oil distillate of 20.28% in 230-300 deg.C range, and anthracene oil distillate of 16.64% in 300-360 deg.C rangeAnd percent, obtaining the asphalt after the light components are completely distilled, and measuring indexes of the asphalt, such as the softening point of 88.5 ℃, toluene insoluble substance of 17.1 percent, quinoline insoluble substance of 2.6 percent and coking value of 47.2 percent.
Example 2
Taking raw material tar and byproduct asphalt as raw materials, and adopting the following steps of: 1, weighing 500g of raw tar, heating to 80 ℃, crushing the byproduct asphalt, screening by using a 20-mesh sieve, and adding 50g of the byproduct asphalt to mix into the raw oil; stirring all the time in the process to mix uniformly, and then measuring the density to be 1.146g/cm3And a viscosity of 3.29 mPas; the toluene insolubles were determined again at 1.83% and quinoline insolubles at 1.64%; weighing 100ml of mixed raw oil, distilling by using a raw material tar distillation range tester, respectively receiving the amount of each light component by using a cooling container, heating the raw oil to 170 ℃, wherein the distillate of light oil is 2.19%, the distillate of phenol oil in a range of 170-210 ℃ is 1.50%, the distillate of naphthalene oil in a range of 210-230 ℃ is 6.37%, the distillate of wash oil in a range of 230-300 ℃ is 20.65%, the distillate of anthracene oil in a range of 300-360 ℃ is 16.25%, obtaining asphalt after all the light components are distilled out, and measuring the indexes of the asphalt, such as the softening point of 86.9 ℃, the toluene insoluble substance of 16.7%, the quinoline insoluble substance of 2.4%, the coking value of 46.6%, and the like.
Example 3
Taking raw material tar and byproduct asphalt as raw materials, and adopting the following steps: 1, weighing 500g of raw tar, heating to 80 ℃, crushing the byproduct asphalt, screening by using a 20-mesh sieve, and adding 33g of the byproduct asphalt to mix into the raw oil; stirring all the time in the process to mix uniformly, and then measuring the density to be 1.150g/cm3And a viscosity of 3.07 mPas; the toluene insolubles were determined again at 1.74% and quinoline insolubles at 1.46%; weighing 100ml of mixed raw oil, distilling with raw material tar distillation range tester, respectively receiving light components via a condensing cooling container, heating to 170 deg.C to obtain light oil distillate of 2.28%, phenol oil distillate of 1.69% in 170-210 deg.C range, naphthalene oil distillate of 6.41% in 210-230 deg.C range, and wash oil distillate in 230-300 deg.C rangeThe content is 20.34%, the distillate amount of anthracene oil in the range of 300-360 ℃ is 16.71%, the asphalt is obtained after all light components are distilled out, and indexes of the asphalt, such as 85.4 ℃ of softening point, 16.3% of toluene insoluble substance, 2.3% of quinoline insoluble substance, 46.1% of coking value and the like, are measured.
Claims (1)
1. The method for producing the medium-temperature asphalt by mixing is characterized by comprising the following steps of:
1) raw material oil is prepared by mixing raw material tar and byproduct asphalt in a mass ratio of 5:1 to 15:1, the raw material oil is heated to 70-80 ℃, the density and viscosity of the raw material oil are measured, and then toluene insoluble substances and quinoline insoluble substances are measured; the density of the raw oil is 1.12-1.20g/cm3The viscosity of the raw oil is less than 4 mPas, the mass percent of quinoline insoluble substances is less than 2 percent, and the mass percent of toluene insoluble substances is 1-10 percent;
the byproduct asphalt is prepared by performing raw material pretreatment, delayed coking and calcination processes when the coal-based needle coke is produced by using the maltha, removing quinoline insoluble substances in the coal tar asphalt by adopting a solvent method, and then performing heat treatment to obtain refined asphalt, wherein a large amount of byproduct asphalt is generated in the process, the softening point of the byproduct asphalt is 80-90 ℃, the mass percentage of the toluene insoluble substances is 20-30%, the mass percentage of the quinoline insoluble substances is 10-20%, and the coking value is more than or equal to 45%;
2) distilling the mixed raw oil by using a raw material tar distillation range tester, respectively receiving the amount of each light component by using a condensation cooling container, distilling light oil when the raw oil is heated to 170 ℃, distilling phenol oil when the raw oil is heated to 170-210 ℃, distilling naphthalene oil when the raw oil is heated to 210-230 ℃, distilling wash oil when the raw oil is heated to 230-300 ℃, distilling anthracene oil when the raw oil is heated to 300-360 ℃, and obtaining the medium-temperature asphalt after all the light components are distilled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910554486.6A CN110295050B (en) | 2019-06-25 | 2019-06-25 | Method for producing medium-temperature asphalt by mixing |
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| CN201910554486.6A CN110295050B (en) | 2019-06-25 | 2019-06-25 | Method for producing medium-temperature asphalt by mixing |
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| CN110295050A CN110295050A (en) | 2019-10-01 |
| CN110295050B true CN110295050B (en) | 2021-05-28 |
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| CN111647419B (en) * | 2019-11-06 | 2021-06-11 | 宁夏银海鸿兴煤化工有限公司 | Production method of medium-temperature asphalt |
| CN113046110B (en) * | 2021-03-19 | 2021-11-23 | 北京旭阳科技有限公司 | Preparation method of binder asphalt, binder asphalt and electrode for aluminum smelting |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104593033A (en) * | 2015-01-12 | 2015-05-06 | 中钢集团鞍山热能研究院有限公司 | Preparation method of high-performance environment-friendly asphalt |
| CN108441244A (en) * | 2018-04-25 | 2018-08-24 | 煤炭科学技术研究院有限公司 | A kind of preparation method of mesocarbon microspheres and mesophase pitch |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05279669A (en) * | 1992-04-02 | 1993-10-26 | Mitsubishi Kasei Corp | Production of binder pitch |
| CN101775302A (en) * | 2010-02-21 | 2010-07-14 | 河南海星化工科技有限公司 | Method for producting hard pitch and medium temperature pitch by using coal tar |
| CN103242902A (en) * | 2013-04-25 | 2013-08-14 | 新疆鑫联煤化工有限公司 | Processing method of coal tar |
| CN107699266A (en) * | 2017-10-24 | 2018-02-16 | 成都金自天正智能控制有限公司 | A kind of tar distillation technique |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104593033A (en) * | 2015-01-12 | 2015-05-06 | 中钢集团鞍山热能研究院有限公司 | Preparation method of high-performance environment-friendly asphalt |
| CN108441244A (en) * | 2018-04-25 | 2018-08-24 | 煤炭科学技术研究院有限公司 | A kind of preparation method of mesocarbon microspheres and mesophase pitch |
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