CN116162480A - Process method for producing coated asphalt by using ethylene tar - Google Patents
Process method for producing coated asphalt by using ethylene tar Download PDFInfo
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- CN116162480A CN116162480A CN202211533623.6A CN202211533623A CN116162480A CN 116162480 A CN116162480 A CN 116162480A CN 202211533623 A CN202211533623 A CN 202211533623A CN 116162480 A CN116162480 A CN 116162480A
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- tar
- coated asphalt
- ethylene tar
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- 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
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- 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
- C10C3/023—Working-up pitch, asphalt, bitumen by chemical means reaction with inorganic compounds
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- 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
- C10C3/026—Working-up pitch, asphalt, bitumen by chemical means reaction with organic compounds
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- Oil, Petroleum & Natural Gas (AREA)
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- Working-Up Tar And Pitch (AREA)
Abstract
The invention relates to the technical field of advanced inorganic nonmetallic materials, and discloses a process method for producing coated asphalt by using ethylene tar, which comprises the following steps: s1, settling raw material ethylene tar, and adding an additive into the settled ethylene tar; s2, purifying the ethylene tar added with the additive to obtain a tar light component and a tar heavy component; s3, flash evaporation is carried out on the tar heavy component obtained by purification, and the coated asphalt is obtained preliminarily; s4, pouring the coated asphalt obtained by flash evaporation into a reaction kettle; according to the invention, through adding solvent oil, copolymerized petroleum resin, asbestos and high-carbon-content minerals, the acid resistance, alkali resistance, heat resistance and insulation performance of the prepared coated asphalt are increased, the softening point of the prepared coated asphalt is suitable, so that the coated asphalt is not too brittle, and meanwhile, the flowability of the coated asphalt can enable the coated asphalt to better infiltrate into the surface of graphite, so that the graphite is coated, and the combination of the coated asphalt and the graphite is more sufficient.
Description
Technical Field
The invention belongs to the technical field of advanced inorganic nonmetallic materials, and particularly relates to a process method for producing coated asphalt by using ethylene tar.
Background
The raw materials for producing the lithium battery mainly comprise a positive electrode material, a negative electrode material, electrolyte and a diaphragm, wherein the negative electrode material of the battery is mainly graphite, and as graphite has some structural defects, a graphite layer is easy to peel off and pulverize due to intercalation and deintercalation of lithium ions and layer spacing change, and organic solvent co-intercalation of the graphite layer or organic solvent decomposition can also occur to influence the cycle performance of the battery, and after asphalt coating and graphite are processed for a plurality of times, asphalt coating is carried out on the surface of the graphite, so that glass with a graphite surface structure can be avoided; under the condition of insufficient combination between the coated asphalt and the graphite, powder agglomeration of the graphite in the lithium battery can occur in the use process of the lithium battery.
Disclosure of Invention
The invention aims to provide a process method for producing coated asphalt by using ethylene tar, which can increase the acid resistance, alkali resistance, heat resistance and insulation performance of the prepared coated asphalt.
The technical scheme adopted by the invention is as follows: a process method for producing coated asphalt by using ethylene tar comprises the following steps:
s1, settling raw material ethylene tar, and adding an additive into the settled ethylene tar;
s2, purifying the ethylene tar added with the additive to obtain a tar light component and a tar heavy component;
s3, flash evaporation is carried out on the tar heavy component obtained by purification, and the coated asphalt is obtained preliminarily;
s4, pouring the coated asphalt obtained by flash evaporation into a reaction kettle, adding copolymerized petroleum resin, solvent oil, asbestos and high-carbon-content minerals into the reaction kettle, and heating and stirring the coated asphalt mixture.
Optionally, when ethylene tar is settled in the step 1, the ethylene tar is placed in a container, the ethylene tar is settled in a sealed container, and the settling time is 6-8 days.
Optionally, the additives in the step 1 are high chlorinated polyethylene resin and naphthenic oil.
Optionally, the mass of the additive is 1.5-2.5% of the mass of ethylene tar.
Optionally, the mass ratio of the high chlorinated polyethylene resin to the naphthenic oil is 1:1.2-1.7.
Optionally, the purification is performed in the step 2 by distillation.
Optionally, in the step 3, the heavy tar component obtained by purification is flashed through a flash tower, and the internal temperature of the flash tower is 360-550 ℃ and the internal pressure is-100 to-70 kPa during the flash evaporation.
Optionally, the mass of the petroleum resin, the solvent naphtha, the asbestos and the high-carbon-content mineral in the step 4 is respectively 4 to 5 percent, 2 to 3.5 percent, 5 to 6 percent and 7 to 12 percent of the mass of the ethylene tar.
Optionally, the internal temperature of the reaction kettle in the step 4 is 360-460 ℃ and the rotating speed is 150-550 r/min when the reaction kettle is stirred.
The invention has the technical effects that:
through adding solvent oil, copolymerized petroleum resin, asbestos and high-carbon-content minerals, the acid resistance, alkali resistance, heat resistance and insulation performance of the prepared coated asphalt are improved, the softening point of the prepared coated asphalt is suitable, the coated asphalt cannot be too brittle, meanwhile, the coated asphalt can better infiltrate into the surface of graphite due to the fluidity of the coated asphalt, the graphite is wrapped, and the combination of the coated asphalt and the graphite is more sufficient.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, this example provides that a raw material ethylene tar is subjected to sedimentation, an additive is added into the ethylene tar after sedimentation, the ethylene tar is placed in a container, the container is sealed, the ethylene tar is subjected to sedimentation treatment, the sedimentation time is 6 days, a high chlorinated polyethylene resin and a naphthenic base oil are added into the ethylene tar after sedimentation, the total mass of the high chlorinated polyethylene resin and the naphthenic base oil accounts for 1.6% of the mass of the ethylene tar, and the mass ratio of the high chlorinated polyethylene resin to the naphthenic base oil is 1:1.5;
the naphthenic oil has a saturated cyclic carbon chain structure, has the characteristics of low pour point, high density, high viscosity, no toxic or side effect and the like, has high dissolving power, can be well dissolved into distilled tar heavy components during distillation, and can improve the plasticity and elasticity of the prepared coated asphalt.
Purifying the ethylene tar added with the additive to obtain a tar light component and a tar heavy component, wherein in the example, the ethylene tar added with the additive is purified by adopting a distillation mode, specifically comprising the following steps: adding ethylene tar added with additives into a distillation reaction kettle, heating to 400 ℃, controlling the temperature to 2.0MPa, stirring at the speed of 230r/min, reacting for 10 hours, discharging the distillation reaction kettle to normal pressure, and distilling to remove tar light components to obtain tar heavy components;
flash evaporating the heavy tar component obtained by purification to obtain coated asphalt preliminarily, and flash evaporating the heavy tar component obtained by purification through a flash evaporation tower, wherein the internal temperature of the flash evaporation tower is 400 ℃, and the internal pressure is 70kPa;
pouring the coated asphalt obtained by flash evaporation into a reaction kettle, adding copolymerized petroleum resin, solvent oil, asbestos and high-carbon-content minerals into the reaction kettle, heating and stirring the coated asphalt mixture, wherein the internal temperature of the reaction kettle is 360 ℃ and the rotating speed is 220r/min during stirring;
in the example, the C5/C9 copolymerized petroleum resin is selected as the copolymerized petroleum resin, and the characteristics of the C5/C9 copolymerized petroleum resin, namely the aliphatic resin and the aromatic resin, improve the compatibility with EVA, have good solubility, and can increase the adhesive force of the prepared coated asphalt by adding the copolymerized petroleum resin;
the solvent oil can be rubber solvent oil, and the fluidity of the prepared coated asphalt can be improved by adding the solvent oil;
asbestos is a general term of natural fibrous silicate mineral substances, is fibrous, and can improve the acid resistance, alkali resistance, heat resistance and insulation performance of the prepared coated asphalt by adding the asbestos;
the high carbon mineral can be selected from marble powder, the main component of the marble is mainly calcium carbonate, and other materials are magnesium carbonate, calcium oxide, manganese oxide, silicon dioxide and the like, and the softening point of the coated asphalt is improved by adding the high carbon mineral, so that the heat resistance of the coated asphalt is improved.
The mass of the copolymerized petroleum resin, the solvent oil, the asbestos and the high-carbon-content mineral are respectively 4 percent, 2.5 percent, 5 percent and 8.5 percent of the mass of the ethylene tar.
Example 2
Settling raw material ethylene tar, adding an additive into the settled ethylene tar, placing the ethylene tar in a container, sealing the container, settling the ethylene tar for 7 days, adding high chlorinated polyethylene resin and naphthenic base oil into the settled ethylene tar, wherein the total mass of the high chlorinated polyethylene resin and the naphthenic base oil accounts for 2% of the mass of the ethylene tar, and the mass ratio of the high chlorinated polyethylene resin to the naphthenic base oil is 1:1.6;
the naphthenic oil has a saturated cyclic carbon chain structure, has the characteristics of low pour point, high density, high viscosity, no toxic or side effect and the like, has high dissolving power, can be well dissolved into distilled tar heavy components during distillation, and can improve the plasticity and elasticity of the prepared coated asphalt.
Purifying the ethylene tar added with the additive to obtain a tar light component and a tar heavy component, wherein in the example, the ethylene tar added with the additive is purified by adopting a distillation mode, specifically comprising the following steps: adding ethylene tar added with additives into a distillation reaction kettle, heating to 360 ℃, controlling the pressure at 2.0MPa, stirring at the speed of 250r/min, reacting for 12 hours, discharging the distillation reaction kettle to normal pressure, and distilling to remove tar light components to obtain tar heavy components;
flash evaporating the heavy tar component obtained by purification to obtain coated asphalt preliminarily, and flash evaporating the heavy tar component obtained by purification through a flash evaporation tower, wherein the internal temperature of the flash evaporation tower is 460 ℃, and the internal pressure of the flash evaporation tower is-90 kPa;
pouring the coated asphalt obtained by flash evaporation into a reaction kettle, adding copolymerized petroleum resin, solvent oil, asbestos and high-carbon-content minerals into the reaction kettle, heating and stirring the coated asphalt mixture, wherein the internal temperature of the reaction kettle is 400 ℃ and the rotating speed is 260r/min during stirring;
in the example, the C5/C9 copolymerized petroleum resin is selected as the copolymerized petroleum resin, and the characteristics of the C5/C9 copolymerized petroleum resin, namely the aliphatic resin and the aromatic resin, improve the compatibility with EVA, have good solubility, and can increase the adhesive force of the prepared coated asphalt by adding the copolymerized petroleum resin;
the solvent oil can be rubber solvent oil, and the fluidity of the prepared coated asphalt can be improved by adding the solvent oil;
asbestos is a general term of natural fibrous silicate mineral substances, is fibrous, and can improve the acid resistance, alkali resistance, heat resistance and insulation performance of the prepared coated asphalt by adding the asbestos;
the high carbon mineral can be selected from marble powder, the main component of the marble is mainly calcium carbonate, and other materials are magnesium carbonate, calcium oxide, manganese oxide, silicon dioxide and the like, and the softening point of the coated asphalt is improved by adding the high carbon mineral, so that the heat resistance of the coated asphalt is improved.
The mass of the copolymerized petroleum resin, the solvent oil, the asbestos and the high-carbon-content mineral is 5 percent, 2 percent, 5.5 percent and 10 percent of the mass of the ethylene tar respectively.
Comparative example 1
Settling raw material ethylene tar, and then heating to 80-120 ℃ to obtain a heated product; purifying the heated product to obtain a purified product; and carrying out continuous decompression flash evaporation on the purified product to obtain the special asphalt for coating the lithium battery.
Comparative example 2
Preparing a raw material A: carrying out reduced pressure distillation on ethylene tar raw materials, distilling the gas phase at 240 ℃ and under the pressure of-0.09 MPa to obtain C9-C11 fractions, and rectifying and removing naphthalene to obtain C9-C10 fractions serving as raw materials A;
preparing a raw material B: cracking a C5 raw material, polymerizing cyclopentadiene into dicyclopentadiene through a thermal polymerization reaction, and rectifying to remove the dicyclopentadiene to obtain high-purity C5 serving as a raw material B;
raw material A: raw material B: cresol: styrene: mixing the diluents according to the mass ratio of 10:4:1-1.5:1-1.5:2, then adding anhydrous calcium chloride, stirring for 5min, wherein the added anhydrous calcium chloride accounts for 10% of the total solution mass, standing, and taking an upper mixed solution; the diluent is a solvent obtained by distilling the step (5) to remove fractions, and mainly contains saturated aromatic hydrocarbon and aliphatic hydrocarbon, and also contains a small amount of unsaturated hydrocarbon;
adding a gaseous boron trifluoride catalyst into the mixed solution, wherein the added boron trifluoride accounts for 0.2% of the total solution mass, and performing polymerization reaction on the upper mixed solution, wherein the polymerization reaction condition is that the polymerization temperature is 20-30 ℃, and stirring is carried out for 2-3 hours at constant temperature;
and standing and layering the solution obtained after the polymerization reaction, taking an upper oil phase for reduced pressure distillation, wherein the temperature of a distillation gas phase is 220 ℃, the pressure is-0.09 MPa, and cooling the obtained fraction to obtain the copolymerized petroleum resin.
According to the above description, example 2 is the best solution, the solvent oil content is reduced, the content of copolymerized petroleum resin, asbestos and high-carbon-content minerals is increased, the acid resistance, alkali resistance, heat resistance and insulation performance of the prepared coating asphalt are increased, the softening point of the prepared coating asphalt is suitable, the coating asphalt is not too brittle, and meanwhile, the flowability of the coating asphalt can enable the coating asphalt to better permeate into the graphite surface to wrap the graphite.
In the example, a tar light group containing 0.10% of quinoline insoluble matters and having a softening point of 42 ℃ obtained by a centrifugal separation method can be subjected to flash evaporation in a flash evaporation tower with a tower top pressure of-80 KPa and a tower bottom temperature of 310 ℃ to obtain coated asphalt containing 0.21% of quinoline insoluble matters and having a softening point of 90 ℃;
adding coumarone resin with a softening point of 130 ℃ into the obtained coated asphalt, wherein the mass percentage is 18%; the obtained coated asphalt has a softening point of 110 ℃, quinoline insoluble matter of 0.12% and carbon residue of 38%, and the wettability of the coated asphalt is enhanced by adding coumarone resin into the coated asphalt.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (9)
1. The process method for producing the coated asphalt by using the ethylene tar is applied to advanced inorganic nonmetallic materials and is characterized by comprising the following steps of:
s1, settling raw material ethylene tar, and adding an additive into the settled ethylene tar;
s2, purifying the ethylene tar added with the additive to obtain a tar light component and a tar heavy component;
s3, flash evaporation is carried out on the tar heavy component obtained by purification, and the coated asphalt is obtained preliminarily;
s4, pouring the coated asphalt obtained by flash evaporation into a reaction kettle, adding copolymerized petroleum resin, solvent oil, asbestos and high-carbon-content minerals into the reaction kettle, and heating and stirring the coated asphalt mixture.
2. The process for producing coated asphalt from ethylene tar according to claim 1, wherein: when the ethylene tar is settled in the step 1, the ethylene tar is placed in a container, the container is sealed, the ethylene tar is settled, and the settling time is 6-8 days.
3. The process for producing coated asphalt from ethylene tar according to claim 1, wherein: the additives in the step 1 are high chlorinated polyethylene resin and naphthenic oil.
4. The process for producing coated asphalt from ethylene tar according to claim 1, wherein: the mass of the additive is 1.5-2.5% of the mass of ethylene tar.
5. A process for producing a coated asphalt using ethylene tar as defined in claim 3, wherein: the mass ratio of the high chlorinated polyethylene resin to the naphthenic oil is 1:1.2 to 1.7.
6. The process for producing coated asphalt from ethylene tar according to claim 1, wherein: and in the step 2, purification is performed by adopting a distillation mode.
7. The process for producing coated asphalt from ethylene tar according to claim 1, wherein: in the step 3, the heavy tar component obtained by purification is subjected to flash evaporation through a flash evaporation tower, and the internal temperature of the flash evaporation tower is 360-550 ℃ and the internal pressure is-100 to-70 kPa during the flash evaporation.
8. The process for producing coated asphalt from ethylene tar according to claim 1, wherein: the mass of the petroleum resin, the solvent oil, the asbestos and the high-carbon-content mineral in the step 4 is respectively 4 to 5 percent, 2 to 3.5 percent, 5 to 6 percent and 7 to 12 percent of the mass of the ethylene tar.
9. The process for producing coated asphalt from ethylene tar according to claim 1, wherein: the internal temperature of the reaction kettle in the step 4 is 360-460 ℃ and the rotating speed is 150-550 r/min when the reaction kettle is stirred.
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| CN202211533623.6A CN116162480A (en) | 2022-12-01 | 2022-12-01 | Process method for producing coated asphalt by using ethylene tar |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804935A (en) * | 2014-01-27 | 2014-05-21 | 山东天汇防水材料有限公司 | Polybasic polymer resin and petroleum asphalt blending material and waterproof roll prepared from same |
| CN103980719A (en) * | 2014-01-15 | 2014-08-13 | 四川路之星交通工程材料有限公司 | Low-temperature aromatic hydrocarbon oil road modified asphalt, and preparation method thereof |
| CN109913253A (en) * | 2019-02-26 | 2019-06-21 | 王志明 | Lithium battery coats special asphalt and preparation method |
| CN114437557A (en) * | 2022-01-24 | 2022-05-06 | 中钢集团鞍山热能研究院有限公司 | Preparation method of high-softening-point coated asphalt for lithium ion battery negative electrode material |
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- 2022-12-01 CN CN202211533623.6A patent/CN116162480A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980719A (en) * | 2014-01-15 | 2014-08-13 | 四川路之星交通工程材料有限公司 | Low-temperature aromatic hydrocarbon oil road modified asphalt, and preparation method thereof |
| CN103804935A (en) * | 2014-01-27 | 2014-05-21 | 山东天汇防水材料有限公司 | Polybasic polymer resin and petroleum asphalt blending material and waterproof roll prepared from same |
| CN109913253A (en) * | 2019-02-26 | 2019-06-21 | 王志明 | Lithium battery coats special asphalt and preparation method |
| CN114437557A (en) * | 2022-01-24 | 2022-05-06 | 中钢集团鞍山热能研究院有限公司 | Preparation method of high-softening-point coated asphalt for lithium ion battery negative electrode material |
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