CN111500092A - Modification treatment method of waste tire cracking carbon black - Google Patents
Modification treatment method of waste tire cracking carbon black Download PDFInfo
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- CN111500092A CN111500092A CN202010296468.5A CN202010296468A CN111500092A CN 111500092 A CN111500092 A CN 111500092A CN 202010296468 A CN202010296468 A CN 202010296468A CN 111500092 A CN111500092 A CN 111500092A
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- carbon black
- organic solvent
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- curing
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/482—Preparation from used rubber products, e.g. tyres
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
Abstract
The invention discloses a modification treatment method of waste tire pyrolysis carbon black, which comprises the steps of uniformly mixing a pyrolysis carbon black material and an organic solvent, and then dispersing tar oil and residual rubber hydrocarbon attached to the surface and the inner space of carbon black particles into an organic solvent system through ultrasonic curing treatment, so that rich pore structures are formed on the surface and the inner part of the carbon black particles; and then, the agglomerated carbon black particles are subjected to scattering modification treatment by a double-roller crusher, so that the surfaces of the carbon black particles are uniformly coated with the modifier, the reinforcing and dispersing properties of the cracking carbon black are improved, and the organic solvent evaporated after heating is recycled.
Description
Technical Field
The invention relates to the technical field of pyrolysis carbon black treatment, in particular to a modification treatment method of waste tire pyrolysis carbon black.
Background
The thermal cracking technology of the waste tires is that rubber macromolecules of the waste tires are cracked into pyrolysis gas, pyrolysis oil and pyrolysis carbon black at a specific temperature under the condition of oxygen deficiency or the existence of inert gas, the generated pyrolysis gas is an energy source for pyrolysis of the waste tires, the generated oil and the carbon black are main products for pyrolysis of the waste tires, and the regenerated pyrolysis carbon black is a key product for pyrolysis of the tires.
However, the cracking reaction is incomplete, so that the generated carbon black contains impurities such as tar oil, ash content and the like, the quality is seriously affected, the reinforcing performance is very low, and measures such as optimizing cracking process conditions, modifying the cracked carbon black and the like are usually adopted to improve the quality of the cracked carbon black.
However, there are some problems in the conventional carbon black modification process, such as: the surface coating rate of carbon black particles is small, the mixing of the modifying agent and the carbon black is not uniform, and carbon black materials are agglomerated.
Disclosure of Invention
In order to overcome the problems in the background art, the invention aims to provide a method for modifying waste tire pyrolysis carbon black, which can effectively remove substances such as coking oil and the like remained on the surface of the pyrolysis carbon black, improve the agglomeration problem of carbon black particles as a reinforcing agent and improve the quality of the carbon black.
The invention is realized by adopting the following technical scheme:
a modification treatment method of waste tire cracking carbon black comprises the following steps:
s1, dispersing the cracking carbon black material into an organic solvent according to a certain proportion, and performing ultrasonic dispersion treatment to form a cracking carbon black dispersion liquid;
s2, carrying out ultrasonic curing treatment on the pyrolysis carbon black dispersion liquid, carrying out curing heating curing on the dispersion liquid through a heater, and carrying out intermittent ultrasonic treatment by adopting an ultrasonic generator, wherein the ultrasonic time is 1-3min each time, and the interval time is 5-10 min;
s3, sieving and draining the ultrasonically cured carbon black dispersion liquid, preliminarily separating the carbon black material from the organic solvent, and distilling the organic solvent to collect and recycle the organic solvent;
s4, adding the separated carbon black material into a double-roller crusher, scattering and crushing the agglomerated carbon black material, and spraying a modifier to uniformly wrap the surface of carbon black particles;
and S5, heating and drying the carbon black material to obtain the modified carbon black with uniform dispersion.
Further, the organic solvent comprises one or more of benzene, toluene, xylene, pentane, n-hexane, octane, cyclohexane, cyclohexanone, methanol, ethanol, isopropanol, diethyl ether, propylene oxide, methyl acetate, ethyl acetate, propyl acetate acetone, methyl butanone, methyl isobutyl ketone or dimethyl sulfoxide.
Further, the conditions of the ultrasonic curing treatment are as follows: the curing temperature is 40-50 ℃, the ultrasonic power is 200-500W, and the curing treatment time is 2-5 h.
Further, in the step S4, the addition amount of the modifier is 1-3% of the mass of the carbon black material.
Further, the heating and drying conditions in the step S5 are: the temperature is 75-90 ℃.
Compared with the prior art, the invention has the following advantages:
in the invention, firstly, the cracked carbon black material and an organic solvent are uniformly mixed, and then the mixture is subjected to ultrasonic curing treatment, so that the tar oil and residual rubber hydrocarbon attached to the surface and the inner space of carbon black particles are dispersed into an organic solvent system, and rich pore structures are formed on the surface and the inner part of the carbon black particles; and then, the agglomerated carbon black particles are subjected to scattering modification treatment by a double-roller crusher, so that the surfaces of the carbon black particles are uniformly coated with the modifier, and the organic solvent evaporated after heating is recovered, thereby improving the reinforcing and dispersing properties of the cracking carbon black.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Embodiments of the present patent are described in detail below, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the present disclosure.
Example 1
A modification treatment method of waste tire cracking carbon black comprises the following steps:
s1, dispersing the cracking carbon black material into an organic solvent toluene, and performing ultrasonic dispersion treatment to form a cracking carbon black dispersion liquid;
s2, carrying out ultrasonic curing treatment on the pyrolysis carbon black dispersion liquid, carrying out curing heating curing on the dispersion liquid through a heater, and carrying out intermittent ultrasonic treatment by adopting an ultrasonic generator, wherein the ultrasonic time is 3min each time, and the interval time is 10 min;
the conditions of the ultrasonic curing treatment are as follows: the curing temperature is 50 ℃, the ultrasonic power is 300W, and the curing treatment time is 3 h;
s3, sieving and draining the ultrasonically cured carbon black dispersion liquid, preliminarily separating the carbon black material from the organic solvent, and distilling the organic solvent to collect and recycle the organic solvent;
s4, adding the separated carbon black material into a double-roller crusher, scattering and crushing the agglomerated carbon black material, and spraying a modifier to uniformly wrap the surface of carbon black particles;
wherein the addition amount of the modifier is 1-3% of the mass of the carbon black material;
and S5, heating and drying the carbon black material at 85 ℃ to obtain the uniformly dispersed modified carbon black.
Example 2
A modification treatment method of waste tire cracking carbon black comprises the following steps:
s1, dispersing the cracking carbon black material into a mixed solution of an organic solvent toluene and methanol, and performing ultrasonic dispersion treatment to form a cracking carbon black dispersion liquid;
wherein the mixing ratio of the toluene and the methanol is 1: 2;
s2, carrying out ultrasonic curing treatment on the pyrolysis carbon black dispersion liquid, carrying out curing heating curing on the dispersion liquid through a heater, and carrying out intermittent ultrasonic treatment by adopting an ultrasonic generator, wherein the ultrasonic time is 1-3min each time, and the interval time is 5-10 min;
wherein the ultrasonic curing treatment conditions are as follows: the curing temperature is 45 ℃, the ultrasonic power is 450W, and the curing time is 4 h;
s3, sieving and draining the ultrasonically cured carbon black dispersion liquid, preliminarily separating the carbon black material from the organic solvent, and distilling the organic solvent to collect and recycle the organic solvent;
s4, adding the separated carbon black material into a double-roller crusher, scattering and crushing the agglomerated carbon black material, and spraying a modifier to uniformly wrap the surface of carbon black particles;
wherein, the addition amount of the modifier is 1-3% of the mass of the carbon black material;
s5, heating and drying the carbon black material at 80-90 ℃ to obtain the modified carbon black with uniform dispersion.
The result of the detection
| Pore diameter of carbon black | Dispersing effect | |||
| Example 1 | ||||
| Example 2 | ||||
| Sample of cracked carbon black |
In the invention, a premixing and conveying device 1 is used for uniformly mixing a cracked carbon black material with an organic solvent, then the mixture is conveyed into an ultrasonic curing device 2, and high-temperature and ultrasonic treatment is carried out, so that tar and residual rubber hydrocarbon attached to the surface and the inner space of carbon black particles are dispersed into an organic solvent system, and rich pore structures are formed on the surface and the inner part of the carbon black particles; and then, the agglomerated carbon black particles are subjected to scattering modification treatment by a modification device 3, so that the surfaces of the carbon black particles are uniformly coated with a modifier, and meanwhile, the organic solvent evaporated after heating is recovered by a gaseous product recovery device, so that the reinforcement and dispersion properties of the cracking carbon black are improved.
In the technical scheme of the invention, a heating and heat-preserving mechanism 201 is arranged outside the ultrasonic curing device 2.
In the technical scheme of the invention, the modification device 3 comprises a crushing zone 301, a heating zone 302 and a discharging zone 303.
Wherein a gaseous product outlet is arranged at the top of the discharging area 303, and a solvent recovery device 7 is arranged at the gaseous product outlet.
After passing through the heating zone 302, the carbon black mixture is evaporated and dried, and the solvent is recovered by the solvent recovery device 7 for recycling.
Wherein, a carbon black product discharge port 304 is arranged at the bottom of the discharge area 303.
In the technical solution of the present invention, a counter roller 305 is installed in the pulverizing zone 301.
The carbon black materials which are forced to be agglomerated together by the counter-rotating rollers 305 pass through gaps between the counter-rotating rollers during rotation, and are rolled and crushed, so that the surfaces of carbon black particles are uniformly coated with the modifier, and the problem of agglomeration of the carbon black particles is solved.
In the technical scheme of the invention, the organic solvent tank 4 is filled with an organic solvent for extracting residual gum oil and rubber hydrocarbon in carbon black.
The high molecular extraction principle is adopted to adsorb the tar and residual rubber hydrocarbon attached to the surface and the inner space of the carbon black particles, so that the tar and residual rubber hydrocarbon are dispersed into an organic solvent system, the internal microporous structure of the carbon black is released, and the reinforcing performance of the cracked carbon black is improved.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several equivalent substitutions or obvious modifications, which have the same properties or uses, should be considered as falling within the scope of the present invention without departing from the spirit of the invention.
Claims (5)
1. A modification treatment method of waste tire pyrolysis carbon black is characterized by comprising the following steps:
s1, dispersing the cracking carbon black material into an organic solvent according to a certain proportion, and performing ultrasonic dispersion treatment to form a cracking carbon black dispersion liquid;
s2, carrying out ultrasonic curing treatment on the pyrolysis carbon black dispersion liquid, carrying out curing heating curing on the dispersion liquid through a heater, and carrying out intermittent ultrasonic treatment by adopting an ultrasonic generator, wherein the ultrasonic time is 1-3min each time, and the interval time is 5-10 min;
s3, sieving and draining the ultrasonically cured carbon black dispersion liquid, preliminarily separating the carbon black material from the organic solvent, and distilling the organic solvent to collect and recycle the organic solvent;
s4, adding the separated carbon black material into a double-roller crusher, scattering and crushing the agglomerated carbon black material, and spraying a modifier to uniformly wrap the surface of carbon black particles;
and S5, heating and drying the carbon black material to obtain the modified carbon black with uniform dispersion.
2. The method for modifying and treating waste tire cracking carbon black as claimed in claim 1, wherein the organic solvent comprises one or more of benzene, toluene, xylene, pentane, n-hexane, octane, cyclohexane, cyclohexanone, methanol, ethanol, isopropanol, diethyl ether, propylene oxide, methyl acetate, ethyl acetate, propyl acetate acetone, methyl butanone, methyl isobutyl ketone or dimethyl sulfoxide.
3. The method for modifying waste tire cracking carbon black according to claim 1, wherein the conditions of the ultrasonic aging treatment are as follows: the curing temperature is 40-50 ℃, the ultrasonic power is 200-500W, and the curing treatment time is 2-5 h.
4. The method of claim 1, wherein in step S4, the modifier is added in an amount of 1-3% by mass of the carbon black.
5. The method for modifying waste tire cracked carbon black as claimed in claim 1, wherein the drying conditions in step S5 are as follows: the temperature is 75-90 ℃.
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| CN202010296468.5A CN111500092A (en) | 2020-04-15 | 2020-04-15 | Modification treatment method of waste tire cracking carbon black |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113105762A (en) * | 2021-04-13 | 2021-07-13 | 云南云维飞虎化工有限公司 | Method for improving dispersibility of carbon black |
| CN113105761A (en) * | 2021-04-07 | 2021-07-13 | 嘉兴市汇顺达科技有限公司 | Dispersing process of carbon black as raw material for synthesizing high-molecular rubber |
| CN113416435A (en) * | 2021-06-04 | 2021-09-21 | 北京克林泰尔环保科技有限公司 | Carbon black granulation method applied to waste tires |
| CN113563743A (en) * | 2021-07-09 | 2021-10-29 | 中国化学工业桂林工程有限公司 | Catalytic regeneration method of pyrolysis carbon black |
| CN113861511A (en) * | 2021-11-11 | 2021-12-31 | 青岛伊克斯达智能装备有限公司 | Modified pyrolysis carbon black, preparation method thereof and aging-resistant rubber compound |
| CN113956685A (en) * | 2021-11-24 | 2022-01-21 | 安徽固瑞特新材料科技有限公司 | Method for steam infiltration granulation of carbon black |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113105761A (en) * | 2021-04-07 | 2021-07-13 | 嘉兴市汇顺达科技有限公司 | Dispersing process of carbon black as raw material for synthesizing high-molecular rubber |
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| CN113563743A (en) * | 2021-07-09 | 2021-10-29 | 中国化学工业桂林工程有限公司 | Catalytic regeneration method of pyrolysis carbon black |
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| CN113861511A (en) * | 2021-11-11 | 2021-12-31 | 青岛伊克斯达智能装备有限公司 | Modified pyrolysis carbon black, preparation method thereof and aging-resistant rubber compound |
| CN113956685A (en) * | 2021-11-24 | 2022-01-21 | 安徽固瑞特新材料科技有限公司 | Method for steam infiltration granulation of carbon black |
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