WO2025253692A1 - Procédé de production de noir de carbone, composition de caoutchouc et pneu - Google Patents

Procédé de production de noir de carbone, composition de caoutchouc et pneu

Info

Publication number
WO2025253692A1
WO2025253692A1 PCT/JP2025/003089 JP2025003089W WO2025253692A1 WO 2025253692 A1 WO2025253692 A1 WO 2025253692A1 JP 2025003089 W JP2025003089 W JP 2025003089W WO 2025253692 A1 WO2025253692 A1 WO 2025253692A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber
data
carbon black
waste rubber
tire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2025/003089
Other languages
English (en)
Japanese (ja)
Inventor
毬乃 久野
誠一 加藤
倩 呉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Publication of WO2025253692A1 publication Critical patent/WO2025253692A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/12—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C10G1/10—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste

Definitions

  • This disclosure relates to a method for producing carbon black, a rubber composition, and a tire.
  • Patent Document 1 discloses pyrolysis equipment that can recover charcoal from polymer waste, including tire waste, and improves equipment productivity.
  • waste rubber When recycling waste rubber, it is sometimes sorted by size, for example, based on an upper size limit, but traditionally, waste rubber has rarely been sorted in any other way. As a result, waste rubber containing a variety of components is recycled together, resulting in variations in the quality of the resulting pyrolysis products. Also, the cracked oil (an example of a pyrolysis product) obtained by pyrolyzing waste rubber is sometimes recovered and recycled. In this case, too, the cracked oil containing a variety of components has traditionally been used together, with no classification by component. As a result, it has been difficult to maintain the quality of carbon black produced from pyrolysis products, as well as rubber compositions, tires, etc. that contain that carbon black.
  • the purpose of this disclosure is to provide a carbon black production method, rubber composition, and tire that can improve the quality of carbon black produced from pyrolysis products obtained through recycling.
  • a method for producing carbon black according to an embodiment of the present disclosure includes: an oil obtaining step of obtaining cracked oil obtained by thermally decomposing waste rubber; a data acquisition step of acquiring component-related data, which is data related to components of the cracked oil; and a manufacturing step of manufacturing carbon black based on information on the components of the cracked oil identified by the component association data.
  • the thermal decomposition conditions of the cracked oil are related to the group of the waste rubber;
  • the waste rubber groups are classified based on waste rubber data relating to at least one of the specifications and ingredients of the waste rubber or the rubber product that generated the waste rubber.
  • the conditions for thermal cracking of the cracked oil include temperature.
  • the component-related data is data obtained by analyzing the density, the type and amount of aromatics, or the viscosity of the cracked oil.
  • the manufacturing step involves classifying the cracked oil into groups based on information about the components of the cracked oil, and selecting appropriate manufacturing conditions and manufacturing methods for each of the classified groups of cracked oil.
  • the rubber composition according to one embodiment of the present disclosure comprises
  • the carbon black includes carbon black produced by any one of the carbon black production methods (1) to (5).
  • a tire according to an embodiment of the present disclosure includes:
  • the carbon black includes carbon black produced by any one of the carbon black production methods (1) to (5).
  • the present disclosure provides a carbon black production method, rubber composition, and tire that can improve the quality of carbon black produced from pyrolysis products obtained through recycling.
  • FIG. 1 is a diagram illustrating an example of the configuration of a recycling system that executes a method for producing carbon black according to an embodiment of the present disclosure.
  • FIG. 2 is another diagram showing an example of the configuration of the recycling system of FIG.
  • FIG. 3 is a diagram illustrating the first waste rubber data.
  • FIG. 4 is a diagram illustrating the second waste rubber data.
  • FIG. 5 is a diagram illustrating decomposed oil data.
  • FIG. 6 is a flow chart illustrating a process for producing carbon black according to one embodiment of the present disclosure.
  • FIGS. 1 and 2 are diagrams showing an example configuration of a recycling system 1 that executes a carbon black manufacturing method according to one embodiment of the present disclosure.
  • the recycling system 1 includes an information processing device 10.
  • the information processing device 10 is installed in, for example, a recycling facility and is a device that controls the recycling facility.
  • FIG. 1 is a block diagram showing an example internal configuration of the information processing device 10.
  • FIG. 2 shows the overall configuration of the recycling system 1.
  • the recycling system 1 recycles recycled materials.
  • the recycled materials include waste rubber and decomposition oil.
  • Decomposition oil is an example of a thermal decomposition product 82, which will be described later.
  • Waste rubber is discarded rubber and is also called scrap rubber or scrap rubber. Waste rubber is not limited to rubber generated from rubber products, but refers to all discarded rubber, including unnecessary scraps generated during the production or repair of rubber products. Furthermore, waste rubber is not limited to cross-linked rubber, but also includes unvulcanized rubber.
  • Rubber products include tires 30 and the like. In this embodiment, the rubber product is described as a tire 30, but rubber products are not limited to tires 30. Rubber products include final products such as rubber hoses and rubber conveyor belts, as well as rubber parts or components used in the manufacturing stage of final products.
  • Tires 30 may be, for example, newly manufactured tires, tires that are to be retreaded, waste tires generated from tire replacements, scrapping, etc., or ELTs (End-of-Life Tires) that have reached the end of their life as tires 30.
  • Retreading refers to scraping off the tread rubber of a tire 30, applying new rubber, and then vulcanizing the tire for reuse.
  • the tire 30 is described as being for vehicles such as passenger cars, trucks, and buses, but it may also be for aircraft, mining, agricultural use, etc., and is not limited by type.
  • the waste rubber recycled by the recycling system 1 includes buffing dust, peeled rubber, and rubber product scraps.
  • Buffing dust is fine rubber generated during the buffing process of retreading, which scrapes off the remaining tread portion of the base tire.
  • Peeled rubber is long pieces of rubber, for example, 1 to 2 cm wide, that are peeled off from the surface of the tire 30 (see Figure 2). Peeled rubber is generated by scraping the surface of the tire 30 using a U- or V-shaped knife like a peeler. Rubber product scraps are excess rubber generated during the manufacturing process of rubber products such as the tire 30.
  • Buffing dust, peeled rubber, and rubber product scraps are smaller in size or particle size than other rubbers to be recycled. Therefore, by appropriately sorting the small-sized or particle-sized waste rubbers, such as buffing dust, peeled rubber, and rubber product scraps, recycling them with reduced heating time and reduced solvent and catalyst usage is possible.
  • the pyrolysis product 82 is specifically described as the oil (cracked oil) that is produced.
  • Carbon black can be produced by treating the cracked oil using known methods. The production of carbon black is not limited to any particular method, and the method described in Patent No. 6,553,959, for example, may be used.
  • the pyrolysis product 82 and the carbon black produced from the pyrolysis product 82 are processed as needed to a state that allows them to be used as raw materials, and are recycled by being used as part of the raw materials for the tire 30 at the tire 30 factory.
  • the carbon black may be used as part of the raw materials for the rubber composition.
  • the rubber composition contains at least a rubber component and carbon black, and is used as a material for various rubber products. Carbon black may also be used as part of the raw materials for rubber products other than the tire 30 at a rubber product factory.
  • the cracked oil produced by pyrolyzing waste rubber in a pyrolysis furnace contains components corresponding to the waste rubber (for example, sulfur content [wt%]). It is important to suppress variation in the quality of the cracked oil in order to maintain the quality of the carbon black made from cracked oil, the tire 30 containing carbon black, and the rubber composition.
  • the information processing device 10 includes a communication unit 11, a memory unit 12, and a control unit 13.
  • the control unit 13 includes a data acquisition unit 131, a classification unit 132, and an output unit 133.
  • the information processing device 10 may be configured as a computer, for example, in terms of hardware. Details of the components of the information processing device 10 will be described later.
  • the recycling facility in which the information processing device 10 is installed is not limited to a facility in which all processing up to pyrolysis is performed in one location.
  • the facility in which the waste rubber is classified and the facility in which pyrolysis is performed, as described below, may be configured in different locations or by different operators.
  • the information processing device 10 may not be a single device, but may be configured as multiple devices located in each facility and capable of sending and receiving data between them via a network 40.
  • the information processing device 10 may be configured as a single computer in terms of hardware, or as multiple computers connected via a network 40. If the information processing device 10 is configured as multiple computers, the memory unit 12 may be a shared memory accessible by each computer.
  • the information processing device 10 may constitute a recycling system 1 together with a server 60 connected via a network 40.
  • the network 40 may be, for example, the Internet.
  • the network 40 may be configured to include, for example, a LAN (Local Area Network) in part.
  • the recycling system 1 may further be configured to include a reading unit 70 and recycling equipment connected to the information processing device 10.
  • the server 60 is, for example, a computer separate from the information processing device 10.
  • the server 60 includes a computer belonging to the tire 30 manufacturer, and stores and manages information about the tires 30 being manufactured in a database.
  • the information processing device 10 can access the database via the network 40.
  • the information processing device 10 obtains waste rubber data from the database relating to at least one of the specifications and components of the waste rubber (or the rubber product that generated the waste rubber).
  • waste rubber data Conventionally, information about tires 30 has only been used at the manufacturing site (factory) and has rarely been used in recycling.
  • a system such as that shown in Figure 2 is configured, and the information processing device 10 uses the waste rubber data for classification in recycling, as described below.
  • the reading unit 70 is, for example, a general-purpose mobile terminal such as a smartphone or tablet terminal, but is not limited to such mobile terminals as long as it is a device with an imaging function.
  • the reading unit 70 may be an imaging device such as a camera.
  • the reading unit 70 may be used by the manager or operator of the recycling facility.
  • the tire 30 that generated the waste rubber is affixed with an indicator 31 including an identifier 32.
  • the indicator 31 may be attached to the tire 30 by gluing, printing, or kneading it into the rubber.
  • the reading unit 70 may use its imaging function to capture an image of the identifier 32 affixed to the tire 30 and output the image of the identifier 32 to the information processing device 10.
  • the control unit 13 of the information processing device 10 may identify information such as the identification number and model number based on the identifier 32.
  • the imaging function is implemented, for example, by a camera provided in the reading unit 70.
  • the identifier 32 is, for example, a two-dimensional barcode, but is not limited to this.
  • the identifier 32 may be, for example, a barcode, a marker that indicates a specific color, a serial code, etc. Furthermore, the identification number may be composed of not only numbers, but also letters, symbols, etc. In this embodiment, the identification number is a number unique to the tire 30 that generated the waste rubber, but will be referred to as the waste rubber identification number in the following description.
  • the recycling system 1 is not limited to a configuration including an indicator 31 and a reading unit 70 with an imaging function.
  • the recycling system 1 may be configured to include an RFID tag and a reading unit 70 that reads radio waves from the RFID tag.
  • the control unit 13 may obtain information such as the tire 30 number and model number from the reading unit 70.
  • the recycling system 1 may be configured to include a marker substance compounded into the rubber and a reading unit 70 that detects the marker substance.
  • the marker substance is a substance that serves as an identification element to distinguish specific rubber from other rubbers.
  • the indicator 31 may be attached to the waste rubber itself (and scraped off from the tire 30 together with the indicator 31).
  • the indicator 31 may be attached to a container that stores the waste rubber for transportation.
  • the reading unit 70 may read the identifier 32 from the waste rubber, the reading unit 70 may read the identifier 32 from the rubber product (tire 30) that generated the waste rubber, or the reading unit 70 may read the identifier 32 from the container.
  • the recycling system 1 may receive and recycle pyrolysis products 82, such as cracked oil, produced elsewhere.
  • an identifier 32 may be attached to the cracked oil container or the like, and may be read in the same way as waste rubber.
  • the server 60 may also include a computer of the provider of the pyrolysis products 82, such as cracked oil, and the necessary information (cracked oil data, see Figure 5) may be obtained from the provider's computer.
  • the communication unit 11 is configured to include one or more communication modules that connect to the network 40.
  • the communication unit 11 may include a communication module that supports mobile communication standards such as 4G (4th Generation) and 5G (5th Generation).
  • the communication unit 11 may include a communication module that supports wireless or wired LAN standards, for example.
  • the storage unit 12 is one or more memories. Examples of memories include, but are not limited to, semiconductor memory, magnetic memory, or optical memory, and can be any type of memory.
  • the storage unit 12 is, for example, built into the information processing device 10, but can also be configured to be accessed externally by the information processing device 10 via any interface.
  • the memory unit 12 stores various data used in the various calculations performed by the control unit 13.
  • the memory unit 12 may also store the results and intermediate data of the various calculations performed by the control unit 13.
  • the memory unit 12 may also store waste rubber data acquired via the communication unit 11.
  • the waste rubber data includes data relating to at least one of the specifications and components of the waste rubber, or data relating to at least one of the specifications and components of the rubber product that generated the waste rubber.
  • the memory unit 12 may also store decomposed oil data acquired via the communication unit 11.
  • the decomposed oil data may include information on the components of the decomposed oil, information on the waste rubber that was the source of the decomposed oil, or information on the rubber product that generated the waste rubber.
  • the waste rubber data and decomposed oil data may be collectively referred to as recycled raw material data. In other words, waste rubber and decomposed oil may be collectively referred to as recycled raw materials.
  • the recycled raw material data is referenced to classify and recycle recycled raw materials.
  • the recycled raw material data stored in the memory unit 12 may be updated, for example, periodically or when the recycling equipment is started up, based on information from the computers of the tire manufacturer 30 and the decomposed oil provider.
  • FIG 3 is a diagram illustrating first waste rubber data.
  • the first waste rubber data is primarily composed of data on the specifications of the rubber product (tire 30) that generated the waste rubber.
  • the first waste rubber data is a table in which the identification number of the waste rubber is associated with specifications such as model number.
  • the first waste rubber data may also include at least one of the following data: rubber product category, type, size, rubber physical properties, manufacturer, manufacturing date, and non-rubber mixed material information.
  • the rubber product category may be classified by vehicle type, such as PSR (radial tires for passenger cars) or TBR (radial tires for trucks and buses), or product type, such as rubber hoses, seismic isolation rubber, conveyor belts, or rubber crawlers.
  • the rubber product type may be classified by function, such as studless, run-flat, or summer tires, or by application area, such as tread, side, or bead.
  • the size of a rubber product may be numerical specifications such as width, aspect ratio, or rim diameter.
  • the rubber physical properties of a rubber product may be numerical values indicating performance, such as rolling resistance coefficient or elastic modulus.
  • the manufacturer of the rubber product may be, for example, the name of the manufacturer.
  • the manufacturing date of the rubber product may be, for example, information such as the year and month of manufacture.
  • the non-rubber contaminant information may be information about the type of non-rubber substance, such as metal or organic fiber.
  • the first waste rubber data may be part of the data managed by the manufacturer of the tire 30, which is the rubber product that generated the waste rubber, and stored in a database.
  • the information processing device 10 may access the database via the network 40, acquire the first waste rubber data, and store it in the memory unit 12.
  • FIG 4 is a diagram illustrating second waste rubber data.
  • the second waste rubber data is composed mainly of data on the components of the waste rubber.
  • the second waste rubber data is a table in which component information such as the molecular weight of the polymer in the waste rubber is associated with part of the specifications (model number and manufacturing date) of the rubber product (tire 30) that generated the waste rubber.
  • the second waste rubber data may include data on at least one of the components of the waste rubber, such as the polymer, filler, and sulfur.
  • Data on the components of the polymer in the waste rubber may be information such as molecular weight and whether or not it contains butyl rubber.
  • fillers are compounded to reinforce the rubber composition, and an example of this is carbon black.
  • fillers are described as reinforcing materials.
  • examples of fillers include inorganic fillers such as silica, clay, talc, calcium carbonate, and aluminum hydroxide.
  • Data on the components of the filler in the waste rubber may be information such as whether or not it contains silica and the grade of carbon black.
  • the grade of carbon black may be classified as, for example, SAF (Super Abrasion Furnace, ultra-abrasion resistant) or ISAF (Intermediate SAF, semi-ultra-abrasion resistant).
  • Data regarding the sulfur component of the waste rubber may be a numerical value such as the compounding amount (content).
  • the second waste rubber data may be part of the data stored in a database managed by the manufacturer of the tire 30, which is the rubber product that generated the waste rubber.
  • the information processing device 10 may access the database via the network 40, acquire the second waste rubber data, and store it in the memory unit 12.
  • the second waste rubber data is a table in which information on the components of waste rubber is associated with part of the waste rubber specifications. Therefore, the first waste rubber data and the second waste rubber data can be associated via the common waste rubber specifications.
  • the waste rubber data is managed as two tables, but they may also be integrated and managed as a single table. At this time, partial merging may be performed, i.e., part of the first waste rubber data and part of the second waste rubber data may be extracted and integrated.
  • the waste rubber data is stored in the memory unit 12 by the information processing device 10.
  • the waste rubber data may be managed in a decentralized manner.
  • the waste rubber data may be stored and managed using blockchain technology.
  • FIG. 5 is a diagram illustrating example cracked oil data. While the information in the table in Figure 5 is simply indicated with "***," specific values or names are actually entered for each item.
  • the cracked oil data is a table in which information such as components is associated with the cracked oil's identification number.
  • the cracked oil data includes component-related data, which is data related to at least the components of the cracked oil.
  • the component-related data is data analyzing the cracked oil's density, the type and amount of aromatics, or viscosity.
  • the recycling system 1 may receive and recycle cracked oil produced elsewhere. However, minimizing variation in the quality of cracked oil is important to maintain the quality of tires 30, rubber compositions, and other products made from cracked oil.
  • Obtaining information on the cracked oil's density, the type and amount of aromatics, or viscosity enables more appropriate recycling based on the cracked oil's properties. All data related to the cracked oil's components may be obtained from the cracked oil provider, or some of it may be obtained through analysis.
  • the cracked oil data may include information regarding the thermal cracking conditions of the cracked oil.
  • the thermal cracking conditions of the cracked oil may include temperature. Based on information regarding temperature, which has a significant effect on the properties of the cracked oil, it becomes possible to carry out appropriate recycling.
  • the thermal cracking temperature is preferably high, for example, 500°C or higher.
  • the cracked oil data may include, as other information, information on the tire 30 (the raw material) that was pyrolyzed in a pyrolysis furnace to obtain the cracked oil, or information on the rubber compounding of the tire 30. Since the cracked oil data contains information on the raw material tire 30, it becomes possible to associate the cracked oil data (particularly the pyrolysis conditions) with the waste rubber data (particularly the waste rubber group described below).
  • the information on the tire 30 may be a combination of the size and aspect ratio of the tire 30.
  • the type of tire 30 can be identified by the combination of the size and aspect ratio of the tire 30.
  • the information on the tire 30 may be a grading related to wet performance.
  • the content rate of high styrene rubber, etc. can be identified from the grading related to wet performance.
  • the information on the tire 30 may be shown by component, such as the tread.
  • the rubber compounding information may be the amount of styrene in the polymer, which is highly relevant to the type of tire 30.
  • the components of the decomposed oil may be estimated using performance data from past recycling that shows the correlation between the components of the decomposed oil and the type of raw material tire 30.
  • the information processing device 10 may access the computer of the decomposed oil provider via the network 40, obtain the decomposed oil data, and store it in the memory unit 12.
  • the decomposed oil data may be stored and managed in the same way as the waste rubber data.
  • the control unit 13 is one or more processors.
  • the processor may be, for example, a general-purpose processor or a dedicated processor specialized for a specific process, but is not limited to these and can be any processor.
  • the control unit 13 controls the overall operation of the information processing device 10.
  • the control unit 13 also controls the recycling process at the recycling facility in which the information processing device 10 is installed.
  • the recycling facility is provided with a recovery unit 80 used to recover waste rubber.
  • the recovery unit 80 is a device different from the information processing device 10 that is controlled by the information processing device 10 and may include, for example, a robotic hand.
  • the recycling facility is also provided with a sorting device 81 used to classify the waste rubber into groups.
  • the sorting device 81 is a device different from the information processing device 10 that is controlled by the information processing device 10 and may include, for example, a belt conveyor. In the example of FIG. 2, three groups, G1 to G3, are shown, but the number of groups is not limited to three.
  • the recycling facility is also provided with a recycling processing unit that performs recycling processing according to conditions for each group.
  • the recycling processing unit is a device different from the information processing device 10 that is controlled by the information processing device 10 and may be, for example, a pyrolysis processing device.
  • the information processing device 10 controls the recycling processing in the recycling facility by controlling the recovery unit 80, the sorting device 81, and the recycling processing unit.
  • the recovery section 80 is also capable of recovering cracked oil produced elsewhere. That is, in the example of Figure 2, the pyrolysis products 82 include both those produced at the recycling facility (bottom right of Figure 2) and those produced elsewhere (top right of Figure 2).
  • the information processing device 10 may have the following software configuration.
  • One or more programs used to control the operation of the information processing device 10 are stored in the memory unit 12.
  • the programs stored in the memory unit 12 are loaded by the processor of the control unit 13, they cause the processor to function as a data acquisition unit 131, a classification unit 132, and an output unit 133.
  • the data acquisition unit 131 acquires waste rubber data relating to at least one of the specifications and components of the waste rubber or the rubber product that generated the waste rubber, based on information read from the waste rubber or information read from the rubber product that generated the waste rubber. Similarly, the data acquisition unit 131 acquires decomposed oil data for decomposed oil produced at another location, based on information read from the decomposed oil container, etc.
  • the classification unit 132 classifies recycled materials into groups based on the recycled material data acquired by the data acquisition unit 131.
  • a group is a collection of recycled materials that are similar in terms of the components they contain.
  • the recycled materials are grouped to reduce variation in the quality of the product (carbon black in this embodiment) produced by the recycling process and to achieve the desired quality.
  • the classification unit 132 may classify the waste rubber based on data on the specifications of the waste rubber or the rubber product that generated the waste rubber contained in the waste rubber data. For example, using the first waste rubber data, the classification unit 132 may classify the waste rubber based on at least one of the category, type, size, rubber properties, manufacturer, manufacturing date, and non-rubber mixed material information of the rubber product that generated the waste rubber. In this case, by distinguishing it as a tire 30, the waste rubber can be indirectly classified by component. For example, tires 30 of a specific type from the same manufacturer are considered to have similar components. Therefore, by grouping by manufacturer and type of rubber product (tire 30), it is possible to suppress variation in the quality of the pyrolysis product 82.
  • the classification unit 132 may classify the waste rubber based on data on the specifications of the waste rubber or the rubber product that generated the waste rubber contained in the waste rubber data.
  • the classification unit 132 may classify the waste rubber based on component data included in the waste rubber data. For example, using the second waste rubber data, the classification unit 132 may classify the waste rubber based on data regarding at least one of the components of the waste rubber: polymer, filler, and sulfur. In this case, the waste rubber can be directly classified by component. Therefore, compared to indirect classification, this can more effectively suppress variation in the quality of the pyrolysis product 82.
  • the classification unit 132 may also classify the decomposed oils based on component-related data included in the decomposed oil data. For example, the classification unit 132 may classify high-density decomposed oils into one group based on density information. The classification unit 132 may also classify the decomposed oils based on information about thermal decomposition conditions included in the decomposed oil data. For example, the classification unit 132 may classify the decomposed oils by thermal decomposition temperature classification. The classification unit 132 may also classify the decomposed oils by associating the thermal decomposition conditions of the decomposed oil with waste rubber groups based on information about the raw material tire 30 or the rubber compounding of the tire 30 included in the decomposed oil data.
  • the classification unit 132 may use waste rubber groups classified based on waste rubber data related to at least one of the specifications and components of the waste rubber or the rubber product that generated the waste rubber.
  • the method of classifying decomposed oils using waste rubber groups enables accurate classification of waste rubber using a database managed by the tire 30 manufacturer, thereby enabling more appropriate recycling.
  • the output unit 133 may output information such as the groups into which the waste rubber has been classified by the classification unit 132 to a display device or the like so that the manager or operator of the recycling facility can understand the information.
  • the display device may be, for example, a display provided in the reading unit 70.
  • the display device may also include a display connected to the information processing device 10.
  • FIG. 6 is a flowchart showing the process of the carbon black manufacturing method according to this embodiment, which is executed by the recycling system 1.
  • the recycled raw material will be described as specifically being cracked oil obtained by thermally decomposing waste rubber.
  • Recyclable raw materials are collected (acquired) by the collection unit 80 (step S1, oil acquisition step).
  • the identifier 32 of the collected recycled raw materials is read by the reading unit 70.
  • the information read from the recycled raw materials includes the identification number of the collected recycled raw materials (i.e., decomposed oil).
  • the identification number may be obtained from the computer of the decomposed oil provider via the network 40.
  • the data acquisition unit 131 acquires recycled raw material data (decomposed oil data) from the decomposed oil provider's database via the memory unit 12 or the network 40 based on information read from the storage container of the recycled raw materials, etc. (Step S2, data acquisition step).
  • the decomposed oil data includes component-related data, which is data related to the components of the decomposed oil.
  • the classification unit 132 classifies the recycled materials into groups based on the recycled material data (step S3).
  • the recycling processing unit carries out recycling processing on the classified recycled materials under appropriate conditions for each group (step S4).
  • the recycling processing conditions are, for example, the operating conditions for producing carbon black.
  • the temperature settings of the manufacturing equipment and the processing time may change depending on the group.
  • the recycled materials are divided into groups, and appropriate operating conditions are set for each group.
  • Step S5 appropriate operating conditions are set for each group, and carbon black is produced from the cracked oil using manufacturing equipment (step S5).
  • Steps S3 to S5 correspond to the manufacturing steps. These processes can improve the quality of the carbon black produced from the pyrolysis products 82 obtained through recycling.
  • the manufacturing step classifies the cracked oil into groups based on information about the cracked oil's components, and appropriate manufacturing conditions and manufacturing methods can be selected for each group of classified cracked oil. For example, even when receiving cracked oil produced elsewhere and recycling it, high-quality carbon black can be produced.
  • a high-quality tire 30 or rubber composition can be produced.
  • the method for producing this carbon black and the step of producing the tire 30 or rubber composition can constitute a method for producing the tire 30 or rubber composition.
  • the tire 30 may be a newly produced tire, or it may be a retreaded tire.
  • the method for producing the tire 30 includes a method for producing a retreaded tire.
  • a high-quality tire 30 or rubber composition can be produced by such a method for producing the tire 30 or rubber composition.
  • the carbon black manufacturing method according to this embodiment can improve the quality of the carbon black manufactured from the pyrolysis product 82 obtained by recycling through appropriate classification of components. Furthermore, a rubber composition or a tire 30 can be manufactured using the carbon black obtained using this recycling method. The manufactured rubber composition and tire 30 are of higher quality than conventional ones.
  • Dismantling/downsizing is a series of processes in which rubber products such as tires 30 are crushed and separated into individual materials. Dismantling/downsizing may further include the processes of "separation,” “cutting,” “chipping,” “crushing,” and “pulverization,” carried out in this order. Separation is a process in which a rubber product is separated into individual materials (such as rubber and metal).
  • Cutting is a process in which a rubber product is cut into pieces for each component (such as tread and sidewall).
  • Chipping is a process in which a rubber product is scraped or drilled.
  • Crushing is a process in which a rubber product is crushed into chips several inches in size.
  • Crushing is a process in which a rubber product is crushed into granules.
  • Separation techniques include pulling, induction heating, punch cutting, magnetic separation, cutting separation, mechanical separation, cooling, and water jetting.
  • Pulling is a technique in which a bead is hooked and pulled out of the tire 30 using a hook or similar tool.
  • Induction heating is a technique in which induction heating is used to reduce the adhesive force between the metal and rubber of the bead, separating them.
  • Punch cutting is a technique in which a bead is removed from the tire 30 by making a series of overlapping punch cuts (holes) in the sidewall of the tire 30 around the bead.
  • Magnetic separation is a technique in which magnetic force is used to separate metal from rubber.
  • Cutting separation is a technique in which a blade, cutter blade, knife, or rotary milling machine is used to cut and separate metal from rubber.
  • Mechanical separation is a technique in which metal and rubber are separated by applying sufficient mechanical force to separate them.
  • Cooling is a technique in which liquid nitrogen or similar is used to cool the rubber, embrittling it, before separation.
  • Water jetting is a technique in which high-pressure water is sprayed onto the rubber to separate the rubber from the metal.
  • Cutting methods include rotary blades, blade cutters, L-knives, water jets, and pneumatic cutting.
  • Rotary blades are a cutting method that involves bringing a rotating blade (including blades and circular saws) into contact with the object.
  • Blade cutters are a cutting method that uses a blade or cutting edge.
  • L-knives are a cutting method that uses an L-shaped knife.
  • Water jets are a cutting method that involves spraying water (including water containing sand) at high pressure.
  • Pneumatic cutting is a cutting method that uses compressed air.
  • Chipping techniques include punch cutting and filing.
  • Punch cutting is a method of drilling holes using a punch blade.
  • File filing is a method of scraping the tire 30 using a file.
  • Crushing methods include rotating blades, blade cutters, and cut-off wheels.
  • Rotary blades are a method of crushing materials by using a rotating blade (including blades, circular saws, etc.) against the material.
  • Blade cutters are a method of crushing materials using a blade or cutter blade.
  • Cut-off wheels are a method of crushing materials by placing cutting blades on a wheel-shaped crushing component and applying it to the material.
  • Crushing methods include roller mills, pin mills, and water jets.
  • Roller mills crush materials using a "grinding and grinding action” that combines the compressive force caused by the centrifugal force of the rollers with the shearing force caused by the rotation of the rollers.
  • Pin mills crush materials by attaching dozens of pins to the surfaces of two opposing circular plates that are rotated at high speed.
  • Water jets crush materials by spraying water at high speed and causing it to collide with the object.
  • the following separation methods may be selected depending on the material to be separated. If the material to be separated is metal, magnetic separation, "pulling, peeling, tearing," melting, crushing, punching, high-pressure jet, cutting/machining, sedimentation, and centrifugal classification may be selected.
  • Magnetic separation uses magnetic force to separate metal from rubber. Pulling, peeling, and tearing involves pulling out, peeling off, and tearing metal such as bead wire to separate it from the rubber. Melting includes vibration melting, heated steam, and induction heating. Vibration melting involves vibrating the tire 30 with ultrasound or the like to melt and separate the metal components. Heated steam involves spraying heated steam to melt the rubber and separate the metal cord. Induction heating involves heating the tire 30 with electromagnetic induction to separate the metal cord.
  • Crushing involves crushing the tire 30 with a roller or the like to separate the metal cord from the rubber.
  • Punching removes metal cord from the tire 30 by creating a series of overlapping punching cuts in a circumferential pattern in the sidewall of the tire 30 around the bead.
  • High-pressure jetting separates the metal and rubber by spraying water or other materials at high pressure.
  • Cutting and milling separates the metal and rubber portions by mechanical cutting and milling.
  • Sedimentation involves placing the wire in a water-soluble polyol at temperatures exceeding 160°C for several to several tens of hours, separating the rubber and wire that settle to the bottom.
  • Centrifugal classification is a type of air classification that uses centrifugal force to separate the metal and rubber.
  • methods that may be selected include sieving, vibrating screen, melting, air classification, centrifugal classification, gravity classification, friction, "pulling, peeling, tearing," high-pressure jet, electrostatic separation, mechanical heat control, and cutting/milling.
  • Sieving uses a sieve to separate fiber and rubber. Vibrating screen performs sieving by vibrating a sieve up and down. Melting includes heated steam and induction heating. Heated steam is sprayed to melt the rubber and separate the metal cord. Induction heating heats the tire 30 using electromagnetic induction to separate the metal cord.
  • Air classification separates fiber and rubber powder by utilizing differences in the hydrodynamic behavior of particles (centrifugal force, gravity, inertia force, etc.).
  • Centrifugal classification is a type of air classification that uses centrifugal force to separate fiber and rubber.
  • Gravity classification is a type of air classification that uses gravity to separate fiber and rubber.
  • Friction involves applying pressure to the tire 30 to generate friction, forming agglomerates from the fibers, and then separating the agglomerates from the rubber granules using a sieve or similar.
  • Pulling, peeling, and tearing involve pulling, peeling, or tearing the fiber reinforcement portion to separate it from the rubber.
  • High-pressure jetting involves spraying water or similar at high pressure to separate the fiber and rubber.
  • Electrostatic separation involves charging particles using electrostatic force, and separating the fiber and rubber based on the difference in charge or electric field strength. Mechanical thermal control separates the rubber from the fiber reinforcement elements under controlled thermal conditions. Cutting and milling separates the fiber and rubber portions by mechanically cutting or milling.
  • mechanical abrasion after solidification involves solidifying the material using liquid nitrogen or the like, and then removing the sealant layer by mechanical abrasion.
  • Processing aids involve removing the sealant layer using water or a soapy solution.
  • crushing, cutting, melting, or peeling may be selected.
  • Crushing separates the resin from the rubber by crushing the tire 30 with a roller or the like.
  • Cutting separates the resin by cutting along the boundary between the rubber layer and the resin.
  • Melting includes vibration melting. Vibration melting separates the resin by vibrating the tire 30 with ultrasound or the like, melting it. Peeling foams unfoamed rubber by heating, applying a peeling force between the rubber and the resin material, and peeling the resin material from the rubber.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Processing Of Solid Wastes (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

Un procédé de production de noir de carbone comprend : une étape d'acquisition d'huiles (S1) dans laquelle des huiles de pyrolyse obtenues par pyrolyse de déchets de caoutchouc sont acquises; une étape d'acquisition de données (S2) dans laquelle des données relatives à des composants relatives à des composants des huiles de pyrolyse sont acquises; et des étapes de production (S3 à S5) dans lesquelles du noir de carbone est produit sur la base d'informations sur les composants des huiles de pyrolyse qui sont spécifiées par les données relatives à des composants.
PCT/JP2025/003089 2024-06-06 2025-01-30 Procédé de production de noir de carbone, composition de caoutchouc et pneu Pending WO2025253692A1 (fr)

Applications Claiming Priority (2)

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JP2024-092573 2024-06-06
JP2024092573A JP2025184269A (ja) 2024-06-06 2024-06-06 カーボンブラックの製造方法、ゴム組成物、タイヤ

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WO2025253692A1 true WO2025253692A1 (fr) 2025-12-11

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017008223A (ja) * 2015-06-23 2017-01-12 株式会社ブリヂストン カーボンブラック、カーボンブラックの製造方法、ゴム組成物及びタイヤ
JP2022525969A (ja) * 2019-03-19 2022-05-20 マイクロウェーブ ソリューションズ ゲーエムベーハー ポリマー廃材からシリカを回収するための熱分解方法および熱分解反応器
JP2024501785A (ja) * 2020-12-29 2024-01-15 ベンツィ アンド パートナーズ エス．アール．エル． プラスチック材料又はバイオマスを含む廃棄物を処理する方法及びプラント

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017008223A (ja) * 2015-06-23 2017-01-12 株式会社ブリヂストン カーボンブラック、カーボンブラックの製造方法、ゴム組成物及びタイヤ
JP2022525969A (ja) * 2019-03-19 2022-05-20 マイクロウェーブ ソリューションズ ゲーエムベーハー ポリマー廃材からシリカを回収するための熱分解方法および熱分解反応器
JP2024501785A (ja) * 2020-12-29 2024-01-15 ベンツィ アンド パートナーズ エス．アール．エル． プラスチック材料又はバイオマスを含む廃棄物を処理する方法及びプラント

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