CN113416435A - Carbon black granulation method applied to waste tires - Google Patents
Carbon black granulation method applied to waste tires Download PDFInfo
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- CN113416435A CN113416435A CN202110625650.5A CN202110625650A CN113416435A CN 113416435 A CN113416435 A CN 113416435A CN 202110625650 A CN202110625650 A CN 202110625650A CN 113416435 A CN113416435 A CN 113416435A
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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
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/56—Treatment of carbon black ; Purification
- C09C1/58—Agglomerating, pelleting, or the like by wet methods
Abstract
The invention discloses a granulation method of carbon black applied to waste tires, belonging to the technical field of waste tire recycling and comprising the following steps: s1, obtaining a rubber block for cracking; s2, putting the rubber blocks into a cleaning device for cleaning; s3, obtaining pyrolysis carbon and pyrolysis oil gas; s4, condensing and cooling the pyrolysis carbon, then discharging the solid, and extracting the pyrolysis carbon from the pyrolysis device for later use; s5, preparing an alkaline solution for adjusting the pH value, and neutralizing the acidity of the binder by adding the modified solution and the alkaline solution and utilizing the alkaline solution, so that the pH value of the carbon black is effectively improved, the ash content of the binder is reduced, and the quality of carbon black granulation is ensured; by utilizing the dispersion effect of the modified solution, the problem of agglomeration during mixing of the carbon boxes is prevented, so that the carbon boxes are not uniformly dispersed, and the conductivity of the carbon black is improved.
Description
Technical Field
The invention belongs to the technical field of waste tire recycling, and particularly relates to a granulation method of carbon black applied to waste tires.
Background
With the rapid development of the automobile industry, the number of waste tires is increasing day by day, causing serious pollution to the environment. Therefore, a great deal of manpower and material resources are invested in various countries to study the recycling of the waste tires. At present, the most ideal treatment method for these wastes at home and abroad is a pyrolysis method, i.e. after the tires of the waste gas are put into a cracking furnace for pyrolysis, useful substances are recovered from the cracked substances for reuse. The method not only eliminates environmental pollution, but also can comprehensively utilize wastes, change wastes into valuables and generate considerable economic benefits.
In the prior art, in the resource utilization industry of tire recovery, most methods are still in a more primary stage of treatment and recovery, and only waste tires can be crushed and then placed in a cracking furnace for one furnace and one furnace for treatment, so that the treatment efficiency is lower. In the process of extracting carbon black from waste tires, because granulation treatment in the cracking process is not ideal, carbon black with high yield is difficult to extract or the yield and the yield of the carbon black are low, the problem of secondary pollution of the carbon black is inevitably generated, and the energy consumption in the manufacturing process is high.
In order to solve the problems, a method for granulating carbon black applied to waste tires is provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a granulation method of waste tire carbon black, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a granulation method of carbon black applied to waste tires comprises the following steps:
s1, putting the waste tires into an extrusion device, and taking out the steel wires doped in the waste tires by using a magnet device to obtain rubber blocks for cracking;
s2, putting the rubber block into a cleaning device for cleaning, and removing all impurities doped in the rubber block and including crushed stone particles;
s3, cracking the cleaned rubber block in a cracking device to obtain cracking carbon and cracking oil gas;
s4, condensing and cooling the pyrolysis carbon, then discharging the solid, and extracting the pyrolysis carbon from the pyrolysis device for later use;
s5, preparing an alkaline solution for adjusting the pH value;
s6, preparing granulating water for granulating;
s7, preparing a binder for mixing in granulating water;
s8, preparing a modification solution for modification;
s9, mixing the prepared granulating water and the binder;
s10, mixing the granulating water mixed with the adhesive with the prepared modified solution;
s11, adding the modified solution into the mixed solution in the previous step, and fully mixing the granulating water and the modified solution to obtain a granulating solution;
s12, putting the standby pyrolysis carbon and the granulation solution into a granulation device, and granulating in the granulation device to form wet carbon black particles;
and S13, drying the wet carbon black particles in a drying roller to remove water, and obtaining carbon black granules.
Further optimize this technical scheme, in S3, before carrying out the schizolysis to the block rubber, add the Tianna aqueous solvent and stir the mixture in the container of depositing of block rubber, the dissolution of acceleration block rubber is used for promoting the schizolysis reaction, puts into the block rubber after dissolving and carries out the schizolysis reaction in the schizolysis device.
Further optimizing the technical scheme, in the step S4, the condensation cooling of the pyrolysis carbon is designed according to the putting amount of the waste tires, and when the putting amount of the waste tires is 5 tons, the condensation cooling of the pyrolysis carbon is 4 hours; when the putting amount of the waste tires is 10 tons, the condensation and cooling of the pyrolysis carbon are 8 hours.
Further optimizing the technical scheme, in S5, the alkaline solution may be a sodium hydroxide solution, a potassium hydroxide solution, a sodium carbonate solution, a sodium bicarbonate solution, or a salt solution with a pH greater than 7.
Further optimizing the technical scheme, in the step S6, the water in the granulating water can be industrial water or purified carbon black production wastewater, and a silane coupling agent is added into the water, wherein the mass ratio of the silane coupling agent to the water is 1: 20.
Further optimizing the technical scheme, in the step S7, the binder is a lignosulfonate solution with the mass fraction of 2-5% or a maltodextrin solution with the mass fraction of 1-2%, the lignosulfonate solution is prepared by a membrane filtration technology, and the maltodextrin solution is prepared by a starch hydrolysis technology.
In S8, the modifying component in the modifying solution is composed of a nano-carbon material, and the nano-carbon material is selected from one of a graphene material and a carbon nanotube, or a mixture of the graphene material and the carbon nanotube.
Further optimizing the technical scheme, in the step S9, when the prepared granulating water and the binder are mixed, the mass ratio of the granulating water to the binder is 4: 1.
Further optimizing the technical scheme, in the step S10, when the granulating water mixed with the adhesive is mixed with the prepared modifying solution, the mass ratio of the granulating water mixed with the adhesive to the prepared modifying solution is 1: 0.1-0.2.
Further optimizing the technical scheme, in the step S11, the mass ratio of the flow rate of the modified solution to the granulation water is controlled by ratio control, and the flow rate of the modified solution can be adjusted according to the flow rate change of the granulation water.
Compared with the prior art, the invention provides a carbon black granulation method applied to waste tires, which has the following beneficial effects:
1. according to the method for granulating the carbon black applied to the waste tire, the modification solution and the alkaline solution are added, and the acidity of the binder is neutralized by the alkaline solution, so that the pH value of the carbon black is effectively improved, the ash content of the binder is reduced, and the quality of carbon black granulation is ensured while the adhesive property is ensured; by utilizing the dispersion effect of the modified solution, the problem of agglomeration during mixing of the carbon boxes is prevented, so that the carbon boxes are not uniformly dispersed, and the conductivity of the carbon black is improved.
2. According to the method for granulating the carbon black applied to the waste tire, the carbon black production wastewater is purified, and the purified carbon black production wastewater is mixed with industrial water and then used as granulating water, so that the problem of secondary pollution of the carbon black is avoided, water resources are saved, and the method is environment-friendly and energy-saving.
Drawings
FIG. 1 is a schematic flow chart of a granulation method of carbon black applied to junked tires according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: referring to fig. 1, a granulation method for carbon black applied to waste tires includes the following steps:
s1, putting the waste tires into an extrusion device, and taking out the steel wires doped in the waste tires by using a magnet device to obtain rubber blocks for cracking;
s2, putting the rubber block into a cleaning device for cleaning, and removing all impurities doped in the rubber block and including crushed stone particles;
s3, cracking the cleaned rubber block in a cracking device to obtain cracking carbon and cracking oil gas;
s4, condensing and cooling the pyrolysis carbon, then discharging the solid, and extracting the pyrolysis carbon from the pyrolysis device for later use;
s5, preparing an alkaline solution for adjusting the pH value;
s6, preparing granulating water for granulating;
s7, preparing a binder for mixing in granulating water;
s8, preparing a modification solution for modification;
s9, mixing the prepared granulating water and the binder;
s10, mixing the granulating water mixed with the adhesive with the prepared modified solution;
s11, adding the modified solution into the mixed solution in the previous step, and fully mixing the granulating water and the modified solution to obtain a granulating solution;
s12, putting the standby pyrolysis carbon and the granulation solution into a granulation device, and granulating in the granulation device to form wet carbon black particles;
and S13, drying the wet carbon black particles in a drying roller to remove water, and obtaining carbon black granules.
Specifically, in S3, before the rubber block is cracked, a tianna water solvent is added to a storage container of the rubber block and stirred to mix, the dissolution of the rubber block is accelerated to promote the cracking reaction, and the dissolved rubber block is put into a cracking device to perform the cracking reaction.
Specifically, in S4, the condensation cooling of the pyrolysis carbon is designed according to the amount of the waste tires put in, and when the amount of the waste tires put in is 5 tons, the condensation cooling of the pyrolysis carbon is 4 hours; when the putting amount of the waste tires is 10 tons, the condensation and cooling of the pyrolysis carbon are 8 hours.
Specifically, in S5, the alkaline solution may be a sodium hydroxide solution, a potassium hydroxide solution, a sodium carbonate solution, or a sodium bicarbonate solution.
Specifically, in the step S6, water in the granulating water is purified carbon black production wastewater, and a silane coupling agent is added into the water, wherein the mass ratio of the silane coupling agent to the water is 1: 20.
Specifically, in the step S7, the binder is a lignosulfonate solution with the mass fraction of 2-5%, and the lignosulfonate solution is prepared by a membrane filtration technology.
Specifically, in S8, the modification component in the modification solution is composed of a nanocarbon material, and the nanocarbon material is selected from graphene materials.
Specifically, in the step S9, when the prepared granulation water and the binder are mixed, the mass ratio of the granulation water to the binder is 4: 1.
Specifically, in S10, when the granulated water mixed with the binder is mixed with the prepared modified solution, the mass ratio of the granulated water mixed with the binder to the prepared modified solution is 1: 0.1-0.2.
Specifically, in S11, the mass ratio of the modifying solution flow rate to the granulating water is controlled by ratio control, and the modifying solution flow rate can be adjusted according to the flow rate change of the granulating water.
Example two: a granulation method of carbon black applied to waste tires comprises the following steps:
s1, putting the waste tires into an extrusion device, and taking out the steel wires doped in the waste tires by using a magnet device to obtain rubber blocks for cracking;
s2, putting the rubber block into a cleaning device for cleaning, and removing all impurities doped in the rubber block and including crushed stone particles;
s3, cracking the cleaned rubber block in a cracking device to obtain cracking carbon and cracking oil gas;
s4, condensing and cooling the pyrolysis carbon, then discharging the solid, and extracting the pyrolysis carbon from the pyrolysis device for later use;
s5, preparing an alkaline solution for adjusting the pH value;
s6, preparing granulating water for granulating;
s7, preparing a binder for mixing in granulating water;
s8, preparing a modification solution for modification;
s9, mixing the prepared granulating water and the binder;
s10, mixing the granulating water mixed with the adhesive with the prepared modified solution;
s11, adding the modified solution into the mixed solution in the previous step, and fully mixing the granulating water and the modified solution to obtain a granulating solution;
s12, putting the standby pyrolysis carbon and the granulation solution into a granulation device, and granulating in the granulation device to form wet carbon black particles;
and S13, drying the wet carbon black particles in a drying roller to remove water, and obtaining carbon black granules.
Specifically, in S3, before the rubber block is cracked, a tianna water solvent is added to a storage container of the rubber block and stirred to mix, the dissolution of the rubber block is accelerated to promote the cracking reaction, and the dissolved rubber block is put into a cracking device to perform the cracking reaction.
Specifically, in S4, the condensation cooling of the pyrolysis carbon is designed according to the amount of the waste tires put in, and when the amount of the waste tires put in is 5 tons, the condensation cooling of the pyrolysis carbon is 4 hours; when the putting amount of the waste tires is 10 tons, the condensation and cooling of the pyrolysis carbon are 8 hours.
Specifically, in S5, the alkaline solution may be a salt solution with a pH greater than 7.
Specifically, in the step S6, water in the granulating water is purified carbon black production wastewater, and a silane coupling agent is added into the water, wherein the mass ratio of the silane coupling agent to the water is 1: 20.
Specifically, in the step S7, the binder is a maltodextrin solution with a mass fraction of 1-2%, and the maltodextrin solution is prepared by a starch hydrolysis technology.
Specifically, in S8, the modification component in the modification solution is composed of a nanocarbon material, and the nanocarbon material is a mixture of a graphene material and a carbon nanotube.
Specifically, in the step S9, when the prepared granulation water and the binder are mixed, the mass ratio of the granulation water to the binder is 4: 1.
Specifically, in S10, when the granulated water mixed with the binder is mixed with the prepared modified solution, the mass ratio of the granulated water mixed with the binder to the prepared modified solution is 1: 0.1-0.2.
Specifically, in S11, the mass ratio of the modifying solution flow rate to the granulating water is controlled by ratio control, and the modifying solution flow rate can be adjusted according to the flow rate change of the granulating water.
Example three: a granulation method of carbon black applied to waste tires comprises the following steps:
s1, putting the waste tires into an extrusion device, and taking out the steel wires doped in the waste tires by using a magnet device to obtain rubber blocks for cracking;
s2, putting the rubber block into a cleaning device for cleaning, and removing all impurities doped in the rubber block and including crushed stone particles;
s3, cracking the cleaned rubber block in a cracking device to obtain cracking carbon and cracking oil gas;
s4, condensing and cooling the pyrolysis carbon, then discharging the solid, and extracting the pyrolysis carbon from the pyrolysis device for later use;
s5, preparing an alkaline solution for adjusting the pH value;
s6, preparing granulating water for granulating;
s7, preparing a binder for mixing in granulating water;
s8, preparing a modification solution for modification;
s9, mixing the prepared granulating water and the binder;
s10, mixing the granulating water mixed with the adhesive with the prepared modified solution;
s11, adding the modified solution into the mixed solution in the previous step, and fully mixing the granulating water and the modified solution to obtain a granulating solution;
s12, putting the standby pyrolysis carbon and the granulation solution into a granulation device, and granulating in the granulation device to form wet carbon black particles;
and S13, drying the wet carbon black particles in a drying roller to remove water, and obtaining carbon black granules.
Specifically, in S3, before the rubber block is cracked, a tianna water solvent is added to a storage container of the rubber block and stirred to mix, the dissolution of the rubber block is accelerated to promote the cracking reaction, and the dissolved rubber block is put into a cracking device to perform the cracking reaction.
Specifically, in S4, the condensation cooling of the pyrolysis carbon is designed according to the amount of the waste tires put in, and when the amount of the waste tires put in is 5 tons, the condensation cooling of the pyrolysis carbon is 4 hours; when the putting amount of the waste tires is 10 tons, the condensation and cooling of the pyrolysis carbon are 8 hours.
Specifically, in S5, the alkaline solution may be a sodium hydroxide solution, a potassium hydroxide solution, a sodium carbonate solution, or a sodium bicarbonate solution.
Specifically, in S6, the water in the granulating water may be industrial water or purified carbon black production wastewater, and a silane coupling agent is added to the water, wherein the mass ratio of the silane coupling agent to the water is 1: 20.
Specifically, in S7, the binder is a lignosulfonate solution with a mass fraction of 2-5% or a maltodextrin solution with a mass fraction of 1-2%, the lignosulfonate solution is prepared by a membrane filtration technique, and the maltodextrin solution is prepared by a starch hydrolysis technique.
Specifically, in S8, the modification component in the modification solution is composed of a nanocarbon material, and the nanocarbon material is a mixture of a graphene material and a carbon nanotube.
Specifically, in the step S9, when the prepared granulation water and the binder are mixed, the mass ratio of the granulation water to the binder is 4: 1.
Specifically, in S10, when the granulated water mixed with the binder and the prepared modified solution are mixed, the mass ratio of the granulated water mixed with the binder and the prepared modified solution is 1: 0.1.
Specifically, in S11, the mass ratio of the modifying solution flow rate to the granulating water is controlled by ratio control, and the modifying solution flow rate can be adjusted according to the flow rate change of the granulating water.
The invention has the beneficial effects that:
1. according to the method for granulating the carbon black applied to the waste tire, the modification solution and the alkaline solution are added, and the acidity of the binder is neutralized by the alkaline solution, so that the pH value of the carbon black is effectively improved, the ash content of the binder is reduced, and the quality of carbon black granulation is ensured while the adhesive property is ensured; by utilizing the dispersion effect of the modified solution, the problem of agglomeration during mixing of the carbon boxes is prevented, so that the carbon boxes are not uniformly dispersed, and the conductivity of the carbon black is improved.
2. According to the method for granulating the carbon black applied to the waste tire, the carbon black production wastewater is purified, and the purified carbon black production wastewater is mixed with industrial water and then used as granulating water, so that the problem of secondary pollution of the carbon black is avoided, water resources are saved, and the method is environment-friendly and energy-saving.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A granulation method of carbon black applied to waste tires is characterized by comprising the following steps:
s1, putting the waste tires into an extrusion device, and taking out the steel wires doped in the waste tires by using a magnet device to obtain rubber blocks for cracking;
s2, putting the rubber block into a cleaning device for cleaning, and removing all impurities doped in the rubber block and including crushed stone particles;
s3, cracking the cleaned rubber block in a cracking device to obtain cracking carbon and cracking oil gas;
s4, condensing and cooling the pyrolysis carbon, then discharging the solid, and extracting the pyrolysis carbon from the pyrolysis device for later use;
s5, preparing an alkaline solution for adjusting the pH value;
s6, preparing granulating water for granulating;
s7, preparing a binder for mixing in granulating water;
s8, preparing a modification solution for modification;
s9, mixing the prepared granulating water and the binder;
s10, mixing the granulating water mixed with the adhesive with the prepared modified solution;
s11, adding the modified solution into the mixed solution in the previous step, and fully mixing the granulating water and the modified solution to obtain a granulating solution;
s12, putting the standby pyrolysis carbon and the granulation solution into a granulation device, and granulating in the granulation device to form wet carbon black particles;
and S13, drying the wet carbon black particles in a drying roller to remove water, and obtaining carbon black granules.
2. The method for pelletizing carbon black applied to junked tires according to claim 1, wherein in S3, before cracking the rubber blocks, the tianna water solvent is added to a storage container of the rubber blocks and stirred and mixed to accelerate the dissolution of the rubber blocks for promoting the cracking reaction, and the dissolved rubber blocks are put into a cracking device for cracking reaction.
3. The carbon black granulation method for waste tires according to claim 1, wherein in the step S4, the condensation cooling of the pyrolysis carbon is designed according to the putting amount of the waste tires, and when the putting amount of the waste tires is 5 tons, the condensation cooling of the pyrolysis carbon is 4 hours; when the putting amount of the waste tires is 10 tons, the condensation and cooling of the pyrolysis carbon are 8 hours.
4. The method for pelletizing carbon black applied to waste tires according to claim 1, wherein in the step S5, the alkaline solution may be sodium hydroxide solution, potassium hydroxide solution, sodium carbonate solution, sodium bicarbonate solution or salt solution with pH value greater than 7.
5. The method for pelletizing carbon black applied to waste tires according to claim 1, wherein in the step S6, water in the pelletizing water can be industrial water or purified carbon black production wastewater, and a silane coupling agent is added into the water, wherein the mass ratio of the silane coupling agent to the water is 1: 20.
6. The method for pelletizing carbon black applied to waste tires according to claim 1, wherein in the step S7, the binder is a lignosulfonate solution with a mass fraction of 2-5% or a maltodextrin solution with a mass fraction of 1-2%, the lignosulfonate solution is prepared by a membrane filtration technology, and the maltodextrin solution is prepared by a starch hydrolysis technology.
7. The method for pelletizing carbon black applied to waste tires according to claim 1, wherein in the step S8, the modifying component in the modifying solution is composed of a nano carbon material, and the nano carbon material is selected from one of graphene material and carbon nanotube or a mixture of the graphene material and the carbon nanotube.
8. The granulation method of carbon black applied to waste tires according to claim 1, wherein in the step S9, the prepared granulation water and the prepared binder are mixed, and the mass ratio of the granulation water to the binder is 4: 1.
9. The granulation method of carbon black applied to waste tires according to claim 1, wherein in the step S10, when the granulation water mixed with the adhesive is mixed with the prepared modified solution, the mass ratio of the granulation water mixed with the adhesive to the prepared modified solution is 1: 0.1-0.2.
10. The method for pelletizing carbon black applied to waste tires according to claim 1, wherein in the step S11, the ratio of the flow rate of the modification solution to the mass ratio of the pelletizing water is controlled by ratio control, and the flow rate of the modification solution can be adjusted according to the flow rate change of the pelletizing water.
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| CN113881251A (en) * | 2021-11-15 | 2022-01-04 | 双星集团有限责任公司 | Granulation method for waste tire cracking carbon black |
| CN113956688A (en) * | 2021-11-24 | 2022-01-21 | 茂名环星新材料股份有限公司 | Carbon black and preparation method and application thereof |
| CN114823171A (en) * | 2022-05-27 | 2022-07-29 | 昆明理工大学 | Nitrogen-oxygen doped carbon nanohorn and preparation method and application thereof |
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