TWI834205B - information processing methods - Google Patents

Abstract

Improve the carbon neutrality of steel products. This disclosure relates to a method of manufacturing steel products in an electric furnace using electricity defined by non-fossil value or zero-emission value.

Description

information processing methods

This disclosure relates to manufacturing methods of steel products, steel products and information processing methods.

Cross-references to related applications

This application claims priority to Japanese Patent Application No. 2021-109720 (filed on June 30, 2021). For reference, the entire disclosure of the application is incorporated here.

The Japanese government proposed a "2050 carbon neutrality" declaration in October 2020. In addition, in terms of the new greenhouse gas reduction target for 2030, the Japanese government has stated a target of 46% reduction compared with 2013. With the goal of carbon neutrality by 2050, it is extremely important to make efforts in the energy sector, which accounts for more than 80% of greenhouse gas emissions. In particular, the decarbonization of the electricity sector is extremely important.

If conventional electric furnaces are used to manufacture steel products, the Most of the energy used is electricity. When electricity is generated through thermal power generation, carbon dioxide is emitted during power generation. On the other hand, when electricity is generated from non-fossil power sources, carbon dioxide is not emitted.

The purpose of this disclosure, which was made in view of this situation, is to provide a manufacturing method, a steel product, and an information processing method for improving the realization of carbon neutrality of steel products.

The manufacturing method of one embodiment of this disclosure is a manufacturing method of a steel product in an electric furnace using electricity defined by a non-fossil value or a zero-emission value.

The steel product according to an embodiment of the present disclosure is manufactured by the above-mentioned manufacturing method.

The steel product according to one embodiment of the disclosure is provided with steel product test certificate (Mill Test Certificate) information on the manufacturing batch, and proves that the electricity used in the manufacturing of the manufacturing batch is defined as a non-fossil value or a zero-emission value. The certification information of the electricity is related.

An information processing method according to an embodiment of the present disclosure is an information processing method performed by an information processing device communicably connected to a network.

This involves linking the steel test certificate information on the manufacturing batches of steel products and the certification information proving that the electricity used in the manufacturing of the aforementioned manufacturing batches is electricity defined in terms of non-fossil value or zero-emission value.

An information processing method according to an embodiment of the present disclosure is an information processing method performed by an information processing device communicably connected to a network. This involves linking the steel test certificate information on the manufacturing batches of steel products and the certification information proving that the electricity used in the manufacturing of the aforementioned manufacturing batches is electricity defined in terms of non-fossil value or zero-emission value.

An information processing method according to an embodiment of the present disclosure is an information processing method performed by an information processing device communicatively connected to a network, which includes: If the power generation process of the purchased electricity is a process that uses renewable energy and energy sources other than renewable energy in a composite manner, the electricity generated from the renewable energy among the aforementioned electricity shall be specified; and The certification information proving that the specified electric power is generated from renewable energy is related to the steel material test certificate information regarding the manufacturing batch of the steel product.

Through the manufacturing method of steel products, the steel products, and the information processing method according to one embodiment of the present disclosure, it is possible to improve the realization of carbon neutrality of steel products, thereby making it possible to achieve the following contributions and usefulness: social effects. That is, in terms of the first effect, it is possible to visualize the electricity used in the production of steel products as electricity defined in terms of non-fossil value or zero-emission value. As shown above, society can easily understand and understand the environmental value of carbon-neutral steel products, and therefore its environmental value can be improved. In addition, in terms of the second effect, customers who purchase steel products can enjoy the environmental value of carbon-neutral steel products with minimal cost increase. In terms of the third effect, manufacturers of steel products can allocate profits earned from manufacturing to the development of carbon-neutral steel manufacturing methods. In terms of the fourth effect, since steel products can be produced that help reduce environmental load, a social structure that can carry out sustainable development with less environmental load can be achieved, thus helping to ensure national health now and in the future. and a cultural life (quoted from Japan’s “Law on the Preparation and Promotion of Environmental Products, etc. by the State, etc.”).

In addition, the steel product manufacturing method, the steel product, and the information processing method according to one embodiment of the present disclosure can improve the carbon neutrality of the steel product, thereby producing the following economic effects. That is, in terms of the first effect, since the comprehensive evaluation of steel product manufacturers from administrative agencies can be improved, the possibility of winning bids in competitive bidding can be increased, thereby increasing the order volume and revenue. In terms of the second effect, demand from customers who desire carbon-neutral steel products can be attracted, so the sales price of steel products can be increased. As for the third effect, if this patent application is approved, there is the possibility of obtaining royalties (license fees) by granting the implementation rights to the implementer of the patented invention (for example, an electric furnace manufacturer that manufactures steel products).

In the manufacturing method of this embodiment, the steel product is manufactured using an electric furnace. As shown in FIG. 1 , the electric furnace EF applies a high voltage to the electrode EL to generate arc heat, and melts the scrap iron SC with the arc heat. The molten steel MS produced by melting is processed into steel products after undergoing processes such as composition adjustment, casting, and rolling.

The electric power used in the electric furnace EF of this embodiment is generated by a non-fossil power source such as renewable energy and does not emit carbon dioxide. Renewable energy here refers to the energy source disclosed below. 1. Sunlight 2. Wind power 3. Hydraulic power 4. Geothermal 5. Biomass (referring to organic matter derived from animals and plants that can be used as an energy source (except crude oil, petroleum gas, flammable natural gas and coal, and products manufactured from these)) 6. In addition to the energy sources listed in items 1 to 5 above, energy sources other than crude oil, petroleum gas, flammable natural gas, coal, and products manufactured therefrom are deemed to be electrical energy by government decree. Source and sustainable user

Non-fossil power sources include not only renewable energy, but also atomic power, for example. The electrical system generated by non-fossil power sources includes the following two types. 1. The value of the electricity itself (kWh value, etc.) 2. Value as non-fossil In this embodiment, among the above two values, "the value as a non-fossil" is called a non-fossil value. In the electric furnace EF, electricity defined by non-fossil value is used. The non-fossil value here is the value included as a non-fossil power source when calculating the ratio of non-fossil power sources in Japan's "Energy Supply Structural Advancement Law". The non-fossil value is the value purchased by a modern electricity retail business in order to achieve the set target value.

The electricity system defined by non-fossil value can be obtained and proven by at least one of the following three methods. (1) Non-fossil certificate (2)Green power certificate (3)J-Credit

Non-fossil certificates are those that take the form of a certificate based on the environmental value of electricity generated by renewable energy.

Green power certificates refer to certificates of the environmental value of electricity generated with renewable energy. The green power certificate is marked with a serial number, making it unique. The green power certificate contains information on the amount of electricity generated, the period of power generation, the method of power generation, and the certificate issuance date. The green power certificate system also contains information on the name of the certification body and the name of the certificate issuing entity.

J-Credit is a system that converts emission reductions and absorptions of greenhouse gases such as carbon dioxide into "credits" and is certified by the country.

As an additional or alternative example, electricity defined by non-fossil value can also be obtained and certified by the following means. (4) Power generation using solar power generation equipment owned by the company

As an alternative, the electricity used in the electric furnace EF may be electricity defined in terms of a zero-emission value, rather than electricity defined in terms of a non-fossil value. The zero-emission value here refers to the value where the carbon dioxide emission coefficient is zero according to Japan's "Law on the Promotion of Global Warming Countermeasures" (hereinafter referred to as the Temperature Control Law). Specifically, the zero-emission value is calculated by multiplying the electricity amount of the non-fossil certificate prepared by the "national average coefficient" when the electrical retail business calculates the adjusted emission coefficient. The discharge amount is subtracted from the value. When power purchasers such as the manufacturing industry report their carbon dioxide emissions to the country based on the Temperature Compensation Act, the carbon dioxide emission coefficient of electricity with zero-emission value becomes zero. For example, electricity defined by zero-emission value can be electricity generated by existing electricity sales companies using renewable energy sources such as hydropower or atomic power. Electricity systems defined by zero-emission values can be obtained and certified through the following means. (5) Contract with electricity retail (for example: "AQUA PREMIUM" (registered trademark) and "AQUA ENERGY 100" provided by Tokyo Electric Power Energy Partner (registered trademark))

Regarding each of the above-exemplified means (1) to (5), information such as a certificate proving that the electricity used in the electric furnace EF is electricity defined by a non-fossil value or a zero-emission value is issued as unique certification information. Obtained by business operators or certification agencies. The above means (1) to (5) are examples, and can be replaced by any other means that proves that the electricity used in the electric furnace EF is electricity defined by non-fossil value or zero-emission value.

In the present invention, the method for proving that the electric power used in the electric furnace EF is electric power defined by non-fossil value or zero-emission value is to obtain certification information through any one of the above (1) to (5). A method of performing certification, or if certification information cannot be obtained, a method of specifying only electricity generated from renewable energy using arbitrary certification information (such as carbon dioxide emission coefficient (residue)) disclosed by electric power companies, etc. (details (discussed later).

Returning to the description of the drawings, the steel product is manufactured from at least one of the following cast sheet semi-finished products shown in FIG. 2 . ・Billet 21 ・Medium steel bloom 22 ・Flat steel blank (slab) 23

Next, the steel product manufactured from the above-mentioned cast slab semi-product may be, for example, at least one of the following products. ・Special-shaped bar steel ・Flat steel ・Small and medium-sized steel ・H-shaped steel (large-shaped steel, steel sheet pile)

The steel products manufactured are accompanied by a steel test certificate. The steel test certificate is an inspection certificate that proves whether the steel product meets the specified specifications and other requirements. As shown in Figure 3, the steel test certificate contains, for example, the following steel test certificate information 31 to 38, and certification information 39. ・Certificate number 31 (unique serial number) ・Manufacturing lot number 32 ・Product size 33 ・Number 34 ・Quality 35 ・Results of tensile test 36 ・Results of bending test 37 ・Chemical composition 38 ・Certification information 39 (here, as an example, the serial number of the green power certificate)

For example, the steel material test certificate information and the certification information proving that the electricity used in the electric furnace EF is electricity defined by a non-fossil value or a zero-emission value are obtained by the information processing device 1 operated by the manager of the electric furnace EF. It is obtained electronically and stored in the memory unit 13 of the information processing device 1 . As an alternative example, the steel material test certificate information and certification information can be manually input by the user and stored in the memory unit 13 of the information processing device 1 .

As shown in Figure 4, the information processing device 1 is one of the nodes communicatively connected to the network NW. The information processing device 1 can communicate with one or more other information processing devices 2 to 5 through the network NW. In Figure 4, five information processing devices 1 to 5 are connected to the network NW, but the number of information processing devices is arbitrary. The hardware configuration of the information processing devices 2 to 5 is the same as the hardware configuration of the information processing device 1, so the description here is omitted.

The information processing device 1 is a computer such as a server belonging to a cloud computing system or other computing system. As an alternative example, the information processing device 1 may be a mobile device such as a mobile phone, a smart phone, a wearable device, a tablet, or the like. As another alternative example, the information processing device 1 may also be a general-purpose machine such as a PC, or a special-purpose machine. "PC" is the abbreviation of personal computer.

Referring to FIG. 5 , the internal structure of the information processing device 1 will be described in detail.

The information processing device 1 includes a control unit 11 , a communication unit 12 , and a memory unit 13 . Each component of the information processing device 1 is connected to each other so as to communicate with each other through a dedicated line, for example.

The control unit 11 includes one or more general-purpose processors including, for example, a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). The control unit 11 may include one or more dedicated processors specialized in specific processing. The control unit 11 may also include one or more dedicated circuits instead of including a processor. The dedicated circuit may be, for example, an FPGA (Field-Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit). The control unit 11 may also include an ECU (Electronic Control Unit). The control unit 11 transmits and receives arbitrary information through the communication unit 12 .

The communication unit 12 includes one or more communication modules corresponding to wired or wireless LAN (Local Area Network) standards for connecting to the network NW. The communication unit 12 may include a device corresponding to one or more mobile communication standards including LTE (Long Term Evolution), 4G (4th Generation), or 5G (5th Generation). Mods. The communication unit 12 may include one or more short-distance communication standards or regulations including Bluetooth (registered trademark, Bluetooth), AirDrop (registered trademark), IrDA, ZigBee (registered trademark), Felica (registered trademark), or RFID. Corresponding communication modules, etc. The communication unit 12 transmits and receives arbitrary information through the network NW.

The memory unit 13 includes, for example, a semiconductor memory, a magnetic memory, an optical memory, or a combination of at least two of them, but is not limited to these. Semiconductor memory is, for example, RAM or ROM. RAM is for example SRAM or DRAM. The ROM is, for example, an EEPROM. The memory unit 13 may also function as a main memory device, an auxiliary memory device, or a cache memory, for example. The storage unit 13 can store information on the results of analysis or processing by the control unit 11 . The storage unit 13 can store various information regarding the operation and control of the information processing device 1 and the like. The memory unit 13 can store system programs, application programs, built-in software, etc. The memory unit 13 can be provided outside the information processing device 1 and can be accessed by the information processing device 1 .

Network NW is a distributed ledger (Hyperledger) type blockchain network, as an example. At this time, all nodes connected to the network NW maintain the same data as one or more blocks in time series.

Network NW can be a public network connected to the Internet or a private network.

The storage unit 13 of the information processing device 1 stores the blockchain BC as shown in FIG. 6 . Blockchain BC is shared by all nodes in the blockchain network NW. For convenience of explanation, here is the case where blockchain BC includes: 1st block B1, 2nd block B2, 3rd block B3, and 4th block B4. Blockchain BC contains any number of blocks.

Block 1 B1 is the initial block of blockchain BC and contains transaction data T1. In Figure 6, one block contains three transaction data. However, the number of transaction data included in one block is arbitrary.

The second block B2 includes: the hash value (hash) H2 of the previous block, that is, the first block B1, the random number (nonce) value N2 corresponding to the hash value H2, and the transaction data T2.

The description of the third block B3 and the fourth block B4 is omitted in order to avoid repeated description.

The control unit 11 of the information processing device 1 is for one manufacturing batch of steel products, and provides the steel product test certificate information and the certification that the electricity used in the electric furnace EF during the manufacturing of the steel products is of non-fossil value or zero-emission value. Integration of certification information for defined electric power. Here, certification information means that it can be obtained through the following methods. In order to realize that the electric power used in the electric furnace EF is electric power defined in terms of non-fossil value or zero-emission value, first, the electric furnace EF is used to manufacture the steel product with the manufacturing batch number recorded in the test certificate of the subject steel. Calculate the power usage per ton of steel based on the actual power usage of the factory per unit of heat energy. The calculation can be performed by the control unit 11 (for example, a process computer) or manually (the same applies below). 1Thermal energy refers to the molten steel that is melted once in the electric furnace EF. From the melted molten steel, steel products are manufactured in batches. Next, the amount of electricity used per ton of steel is multiplied by the weight of the product stated in the test certificate of the subject steel product to calculate the actual power usage used to manufacture the subject steel product. By converting the actual amount of electricity used into non-fossil electricity, it is possible to realize and prove that the electricity used in the electric furnace EF is electricity defined by non-fossil value or zero-emission value.

Specifically, in the method of integrating steel test certificate information and certification information, the control unit 11 establishes a relationship with the manufacturing batch L1 as shown in the manufacturing batch DB in FIG. 7 and links the block B1 of the blockchain BC , the steel test certificate information M1 and the certification information V1 are stored in the memory unit 13 . That is, the steel test certificate information M1 and certification information V1 are registered in block B1 of the blockchain BC as transaction data. The registered information is stored as the token of the blockchain BC. As an alternative example, the certification information V1 can also be embedded in the steel test certificate information M1.

The control unit 11 can disclose the steel material test certificate information M1 and certification information V1 to any third party on the Internet or the like.

Referring to FIG. 8 , the information processing method performed by the control unit 11 of the information processing device 1 will be described.

In step S1, the control unit 11 obtains: steel material test certificate information on the manufacturing batch of the steel product; and proof that the electricity used in the manufacturing of the manufacturing batch is electricity defined in terms of non-fossil value or zero-emission value. information.

In step S2, the control unit 11 integrates the steel material test certificate information and the certification information by establishing a relationship.

In step S3, the control unit 11 registers the associated steel material test certificate information and certification information in the network NW (for example, the blockchain network NW). Step S3 is optional.

In step S4, the control unit 11 publishes the related steel material test certificate information and certification information on the Internet. Step S4 is optional.

[Modification] In the above embodiment, the steel material test certificate information and the certification information are associated and stored in the memory unit 13 . However, the control unit 11 may not be able to obtain certification information such as a green power certificate. Therefore, if the power generation process of the electric power purchased by the electric power demander is a process that compositely utilizes renewable energy and energy other than renewable energy, the control unit 11 can only specify the source of the electric power purchased and used. Electricity from renewable sources. The above-mentioned specification can be performed using any certification information (such as carbon dioxide emission coefficient (residue)) disclosed by electric power companies and the like. The control unit 11 can associate the certification information with the steel material test certificate information and store it.

As mentioned above, if the power generation process of the power purchased by the power demander is a process that uses renewable energy and energy other than renewable energy in a composite manner, only the renewable energy source in the purchased and used power can be specified. coming electricity. The reason for specifying is based on the "15th Comprehensive Resources and Energy Survey of Japan's Ministry of Economy, Trade and Industry, Electricity/Gas Business Subcommittee Electricity/Gas Basic Policy Subcommittee System Review Operation Committee (November 28, 2017)" The reason is as follows. That is, if, as a result of the auction of non-fossil certificates subject to FIT (Feed-in Tariff: fixed-price wholesale purchase system), non-fossil certificates are sold without being agreed upon, the non-fossil certificates cannot be sold. After the transfer to the next fiscal year, it will be regarded as "residual non-fossil electricity equivalent". However, the environmental value of the remaining non-fossil electricity equivalent is zero-emission value. Since users pay fees as FIT taxes, etc., there will be no usable value. In the case of burying, allocation will be made according to the share of the power sold.

In addition, the carbon dioxide emission coefficient of electric power companies for the current year may be disclosed after the end of the year. At this time, the carbon dioxide emission coefficient for this year can be calculated by the control unit 11 according to the following procedure. Procedure 1. Based on the carbon dioxide emission coefficient and the non-fossil electricity ratio of the previous year, estimate the usable amount of non-fossil electricity based on the previous year, and reflect the estimation results on the power plan scheduled to be used at the factory this year. As an alternative example, the non-fossil electricity ratio may be the current year's renewable energy ratio target value recorded in an energy environment plan published by any local government. Sequence 2. Allocate non-fossil electricity for the current year in accordance with requests from customers. Procedure 3. When the carbon dioxide emission coefficient for the current year is disclosed, adjust and determine the actual performance of the allocation of non-fossil electricity and the allocation of remaining electricity other than non-fossil electricity.

If the power generation process is a process that combines renewable energy and energy sources other than renewable energy, the following method can be used to identify only the electricity generated from renewable energy among the purchased and used electricity. In order to realize that the electric power used in the electric furnace EF is electric power defined in terms of non-fossil value or zero-emission value, first, the electric furnace EF is used to manufacture the steel product with the manufacturing batch number recorded in the test certificate of the subject steel. Calculate the power usage per ton of steel based on the actual power usage of the factory per unit of heat energy. The calculation can be performed by the control unit 11 (for example, a process computer) or manually (the same applies below). 1Thermal energy refers to the molten steel that is melted once in the electric furnace EF. From the melted molten steel, steel products are manufactured in batches. Next, the amount of molten steel produced in one melting is multiplied by the renewable energy ratio disclosed by electric power companies, etc., to calculate the amount of molten steel produced from electricity generated from renewable energy. The control unit 11 correlates and integrates the steel material test certificates of steel products produced using molten steel produced from electricity derived from renewable energy, and the amount of electricity used from renewable energy.

[Effect] As described above, according to this embodiment, steel products are produced in an electric furnace using electricity defined in terms of non-fossil value or zero-emission value. Here, the steel products manufactured in the electric furnace are composed of a single material of only steel, and the main raw material is scrap iron. In addition, most (for example, more than 80%) of the energy used in electric furnaces is electricity. Based on these circumstances, by preparing electricity defined by non-fossil value or zero-emission value (such as green electricity) for use in electric furnaces, the carbon dioxide emitted from coke, etc. used in the manufacturing process can be offset. That is, offsetting means to calculate the non-fossil electricity usage equivalent to energy such as coke, add the calculated non-fossil electricity usage to the steel test certificate, and treat it as non-fossil electricity used in the manufacture of steel products. And to establish a relationship with steel products. As a result, carbon-neutral steel products can be produced. In addition, it is easy to prove that steel products are carbon neutral, even for small batches. Therefore, PR (publicity and understanding promotion) activities such as increasing sales prices can be carried out.

In contrast, when manufacturing automobiles, various parts made from various raw materials are used. In addition, the energy used in manufacturing includes electricity, natural gas, and oil. At this time, in order to prove that the product is carbon neutral, each part must be certified as carbon neutral. Therefore, the proof is very complex and difficult. In order to achieve carbon neutrality, environmental labels based on LCA evaluation can be used, but since the evaluation is qualitative, the impact is weak. Furthermore, this evaluation is a comprehensive evaluation only. Therefore, in the manufacturing of automobiles and the like, there is a high possibility that it will be difficult to produce carbon-neutral products.

In addition, according to this embodiment, the information processing device 1 combines the steel material test certificate information regarding the manufacturing batch of the steel product and the electricity used to prove that the manufacturing batch is defined as a non-fossil value or a zero-emission value. Establish a relationship with the certification information. This configuration creates a steel product that is linked to the steel product test certificate information on the production batch and the certification information proving that the electricity used in the production of the production batch is electricity defined in terms of non-fossil value or zero-emission value. , and it is easy to prove that the steel products produced are carbon neutral.

In addition, according to this embodiment, the network NW includes a blockchain network, and the related steel material test certificate information and certification information are registered in the blockchain. If blockchain technology is used as shown above, the login information is dispersed and shared by all nodes. That is, there is no need for a central manager. Therefore, the following effects are achieved. ・Not easy to tamper with ・Since there is no single point of failure, there are no system failures ・Easy to share data with other systems Therefore, the information processing device 1 can realize a highly secure and low-cost system. In addition, since all data is recorded on the blockchain, traceability is ensured.

In addition, according to this embodiment, the control unit 11 discloses the related steel material test certificate information and certification information on the Internet. With this configuration, the information processing device 1 can externally indicate that the steel product is carbon neutral.

In addition, according to this embodiment, when the power generation process of the purchased electric power is a process in which renewable energy and energy sources other than renewable energy are used in a composite manner, the specific electric power is generated from the renewable energy. The electric power and the certification information proving that the specified electric power is generated from renewable energy are related to the steel test certificate information on the manufacturing batch of the steel product. With this configuration, even if the information processing device 1 uses energy other than renewable energy in the power generation process, it can be proven that the steel product part is carbon neutral.

The present disclosure is described based on the drawings and embodiments. However, please note that those familiar with the technology in this field may also make various modifications and changes based on the disclosure. In addition, changes may be made within the scope that does not deviate from the gist of this disclosure. For example, the functions included in each means or each step can be rearranged in a manner that is not logically inconsistent, and a plurality of means or steps can be combined into one or divided.

For example, in the above-described embodiment, a program for executing all or part of the functions or processes of the information processing device 1 may be recorded on a computer-readable recording medium. Computer-readable recording media include non-transitory computer-readable media, such as magnetic recording devices, optical discs, magneto-optical recording media, or semiconductor memories. The distribution of programs is, for example, through the sale, transfer, or transfer of portable recording media such as DVDs (Digital Versatile Discs) or CDROMs (Compact Disc Read Only Memory) on which programs are recorded. To carry out by lending. In addition, the program can also be distributed by storing the program in the storage of any server and transmitting the program to other computers from any server. In addition, Programs may also be provided as Program Products. The disclosure may also be implemented as a program executable by a processor.

The computer temporarily stores in the main memory device, for example, programs recorded on a portable recording medium or programs transferred from a server. Then, the computer uses the processor to read the program stored in the main memory device, and the processor executes processing according to the read program. The computer can also directly read the program from the portable recording medium and perform processing according to the program. The computer can also execute the processing according to the received program each time the server transfers the program to the computer. It is also possible to realize the function only by executing instructions and obtaining results without transferring the program from the server to the computer, and the processing can be performed by a so-called ASP type service. "ASP" is the abbreviation of application service provider. A program contains information for processing by an electronic computer and is in accordance with the program. For example, although it is not a direct instruction to a computer, data of a nature that requires computer processing is equivalent to "according to a program."

B1: Block 1 B2: Block 2 B3: Block 3 B4: Block 4 BC: Blockchain EF: Electric furnace EL:electrode H2: Hash value H3: Previous hash value H4: Previous hash value MS: Molten Steel N2: random value N3: random value N4: random value NW:Network SC: Scrap iron T1: Transaction information T2: Transaction data T3: Transaction data T4: Transaction information 1:Information processing device 2 to 5: Information processing device 11:Control Department 12:Communication Department 13:Memory Department 21:Small steel embryo 22:Medium steel blank 23: Flat steel blank 31:Certificate number 32: Manufacturing batch number 33: Product size 34:Number 35:Quality 36: Results of tensile test 37: Results of bending test 38:Chemical composition 39: Certification information

[Fig. 1] is a schematic diagram of the electric furnace according to this embodiment. [Fig. 2] is a diagram showing a semi-finished cast sheet produced using an electric furnace. [Figure 3] is a diagram showing an example of a steel material test certificate. [Fig. 4] is a schematic diagram of the information processing device and network of this embodiment. [Fig. 5] is a block diagram showing the structure of the information processing device. [Figure 6] is a diagram showing the blockchain. [Fig. 7] is a diagram showing the data structure of the manufacturing batch DB (database). [Fig. 8] is a flowchart showing the operation of the information processing device.

EF: Electric furnace

EL:electrode

MS: Molten steel

SC: Scrap iron

Claims (1)

An information processing method, which is an information processing method performed by an information processing device communicatively connected to a network, which includes: if the power generation process of the purchased power is a composite utilization of renewable energy and renewable energy. In the process of using energy other than renewable energy, specifying the electric power derived from renewable energy among the above-mentioned electric power; and certifying information proving that the specified electric power is electric power derived from renewable energy, and steel products To establish a relationship with the steel test certificate information of the manufacturing batch, the above-mentioned specification is performed by: calculating the power usage per ton of steel based on the actual power usage of the electric furnace that manufactured the above-mentioned steel products; The amount of steel multiplied by the renewable energy ratio to calculate the amount of molten steel produced from electricity from renewable energy; and from the aforementioned electricity usage per ton of steel, and from the aforementioned renewable energy The amount of molten steel produced by the electric power is used to calculate the amount of electric power derived from renewable energy used to manufacture the aforementioned steel products.

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