Information processing method

Abstract

To provide an information processing method that increases the feasibility of carbon neutrality in steel products.SOLUTION: An information processing method performed by an information processing device includes a control unit, a communication unit, and a memory unit, and is communicatively connected to a network via the communication unit. The information processing method includes: acquiring, by the control unit, property information indicating at least one of chemical properties and physical properties of a manufactured product; acquiring certification information that certifies that at least a part of electricity used in the manufacture of the product is electricity defined as a non-fossil value or a zero-emission value, and carbon footprint information of the product; storing the property information, the certification information, and the carbon footprint information in the memory unit in association with a production lot of the product; and issuing a certificate, for the production lot, that displays the property information, the certification information, and the carbon footprint information.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present disclosure relates to an information processing method by an information processing apparatus.

Background Art

[0002] The Japanese government announced "carbon neutrality by 2050" in October 2020. Furthermore, as a new greenhouse gas reduction target for fiscal year 2030, the Japanese government has shown a policy of reducing emissions by 46% compared to fiscal year 2013. Towards carbon neutrality by 2050, efforts in the energy sector, which accounts for over 80% of greenhouse gas emissions, are important. In particular, the decarbonization of the power sector is considered crucial.

Summary of the Invention

Problems to be Solved by the Invention

[0003] When manufacturing steel products using a conventional electric furnace, most of the energy used is electricity. When electricity is generated by 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.

[0004] An object of the present disclosure made in view of such circumstances is to provide an information processing method that enhances the feasibility of carbon neutrality for steel products.

Means for Solving the Problems

[0005] An information processing method by an information processing apparatus according to an embodiment of the present disclosure is as follows: The information processing apparatus includes a control unit, a communication unit, and a storage unit, and is communicably connected to a network via the communication unit. By the control unit, acquire property information indicating at least one of the chemical properties and physical properties of the manufactured product; Obtaining proof information proving that at least a part of the power used in the manufacture of the product is power defined as having a non-fossil value or zero-emission value, and carbon footprint information of the product; Associating the property information, the proof information, and the carbon footprint information with the production lot of the product and storing them in the storage unit; Issuing a certificate that displays the property information, the proof information, and the carbon footprint information for the production lot; Including.

Effect of the Invention

[0006] According to the information processing method according to an embodiment of the present disclosure, since the realizability of carbon neutrality of steel products can be enhanced, social effects can be produced by the following contributions and effects. That is, as a first effect, it is possible to visualize that the power used in the manufacture of steel products is power defined as having a non-fossil value or zero-emission value. In this way, since society can easily recognize the environmental value of carbon-neutral steel products, the environmental value can be improved. Further, as a second effect, customers who purchase steel products can enjoy the environmental value of carbon-neutral steel products with a minimal increase in cost. As a third effect, the manufacturer of steel products can allocate the profit obtained from the manufacture to the development of carbon-neutral ironmaking methods and the like. As a fourth effect, since it is possible to manufacture steel products that contribute to reducing the environmental load, it is possible to aim to build a sustainable society with a small environmental load, and thus contribute to ensuring the health and cultural life of the current and future citizens (quoted from the "Law Concerning the Promotion of Procurement of Environmental Goods, etc. by the State, etc." in Japan).

[0007] Moreover, according to the information processing method according to an embodiment of the present disclosure, since the carbon neutrality of steel products can be enhanced, the following economic effects can be produced. That is, as the first effect, since the comprehensive evaluation from the administration for the manufacturer of steel products can be increased, the possibility of winning the bid in the competitive bidding can be enhanced, and thus the order volume and revenue can be expanded. As the second effect, since the demand from customers who desire carbon neutral steel products can be captured, the selling price of steel products can be increased. As the third effect, when this patent application is granted a patent, there is a possibility of obtaining a royalty (license fee) by setting an implementation right for the person who implements the invention related to the patent (for example, an electric furnace manufacturer that manufactures steel products).

Brief Description of Drawings

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Embodiments for Carrying Out the Invention

[0009] In the manufacturing method of this embodiment, steel products are manufactured in an electric furnace. As shown in FIG. 1, in the electric furnace EF, a high voltage is applied to the electrode EL to generate arc heat, and the iron scrap SC is melted by the arc heat. The molten steel MS generated by melting is processed into steel products after undergoing processes such as component adjustment, casting, and rolling.

[0010] The electric power used in the electric furnace EF of this embodiment is power that does not emit carbon dioxide, generated from non-fossil power sources such as renewable energy. Here, renewable energy refers to the following energy sources. 1. Solar power 2. Wind power 3. Hydro power 4. Geothermal power 5. Biomass (referring to organic substances derived from animals and plants that can be used as an energy source (excluding crude oil, petroleum gas, combustible natural gas, coal, and products manufactured from these).) 6. In addition to the energy sources 1 to 5 above, among energy sources other than crude oil, petroleum gas, combustible natural gas, coal, and products manufactured from these, those recognized as being able to be permanently used as an energy source for electricity as defined by a cabinet order

[0011] Non-fossil power sources include not only renewable energy but also, for example, nuclear power. Electricity generated from non-fossil power sources includes the following two. 1. The value inherent in the electricity itself (such as kWh value, etc.) 2. The value as non-fossil In this embodiment, among the above two values, the "value as non-fossil" is referred to as the non-fossil value. In the electric furnace EF, power defined by the non-fossil value is used. Here, the non-fossil value is the value accounted for as a non-fossil power source when calculating the non-fossil power source ratio under the "Law for the Promotion of the Advanced Energy Supply Structure" of Japan. The non-fossil value is the value purchased by a new electricity retailer in order to achieve a determined target value.

[0012] Electricity defined by non-fossil value can be obtained and proven by using at least one of the following three means, for example. (1) Non-fossil certificate (2) Green power certificate (3) J-credit

[0013] A non-fossil certificate is a form of certificate that certifies the environmental value of electricity generated from renewable energy.

[0014] A green power certificate is a certificate of the environmental value of electricity generated from renewable energy. Since a green power certificate is assigned a serial number, it is unique. A green power certificate contains information on the amount of generated electricity, the generation period, the generation method, and the issuance date of the certificate. A green power certificate further contains information on the name of the certification authority and the name of the certificate-issuing operator.

[0015] J-credit is a system in which the state certifies the reduction and absorption amounts of greenhouse gas emissions such as carbon dioxide as "credits".

[0016] As an additional example or an alternative example, electricity defined by non-fossil value can also be obtained and proven by the following means. (4) Power generation using solar power generation facilities owned by the company

[0017] As an alternative example, the power used in the electric furnace EF may be power defined by zero emission value rather than power defined by non-fossil value. Here, the zero emission value means a value with a carbon dioxide emission coefficient of zero under the "Act on Promotion of Global Warming Countermeasures" (hereinafter referred to as the "Global Warming Countermeasures Act") of Japan. Specifically, the zero emission value is a value that can subtract the carbon dioxide emission amount calculated by multiplying the amount of power of non-fossil certificates procured by the "national average coefficient" from the actual carbon dioxide emission amount when the electricity retailer calculates the adjusted emission coefficient. When a power purchaser such as a manufacturer reports the carbon dioxide emission amount to the country based on the Global Warming Countermeasures Act, the carbon dioxide emission coefficient of the power with zero emission value becomes zero. For example, the power defined by zero emission value may be power generated by a renewable energy such as hydropower or nuclear power by an existing power sales company. The power defined by zero emission value can be obtained and proven by the following means. (5) Contract with electricity retailing (example: "Aqua Premium" (registered trademark) and "Aqua Energy 100" provided by Tokyo Electric Power Energy Partner (registered trademark)

[0018] Regarding each of the means (1) to (5) exemplified above, information such as a certificate proving that the power used in the electric furnace EF is power defined by non-fossil value or zero emission value is obtained from a certificate-issuing business operator or a certification body, etc. as unique proof information. The above means (1) to (5) are just examples and can be replaced by any other means of proving that the power used in the electric furnace EF is power defined by non-fossil value or zero emission value.

[0019] In the present invention, for the method of proving that the power used in the electric furnace EF is power defined by non-fossil value or zero emission value, there is a method of obtaining and proving the proof information by any one of the above (1) to (5), or when the proof information cannot be obtained, a method of specifying only the power derived from renewable energy using any proof information (for example, carbon dioxide emission coefficient (residue)) published by an electric power company, etc. (details will be described later).

[0020] Returning to the description of the figures, the steel products are manufactured from at least one of the following slab semi-products as shown in FIG. 2, for example. · Billet 21 · Bloom 22 · Slab 23

[0021] And the steel products manufactured from the above slab semi-products may be at least one of the following products, for example. · Special-shaped bar steel · Flat steel · Medium and small-sized shaped steel · H-shaped steel (large-shaped steel, steel sheet pile)

[0022] A mill sheet is attached to the manufactured steel products. The mill sheet is an inspection certificate that proves whether the steel products meet the requirements such as the specified standards. As shown in FIG. 3, the mill sheet includes, for example, the following mill sheet information 31 to 38 and certification information 39. · Certificate number 31 (unique serial number) · Manufacturing lot number 32 · Product dimensions 33 · Quantity 34 · Mass 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)

[0023] For example, the mill sheet information and the certification information that proves that the power used in the electric furnace EF is power defined by non-fossil value or zero-emission value are electronically acquired by the information processing device 1 operated by the administrator of the electric furnace EF or the like and stored in the storage unit 13 of the information processing device 1. As an alternative example, the mill sheet information and the certification information may be manually input by the user and stored in the storage unit 13 of the information processing device 1.

[0024] As shown in FIG. 4, the information processing apparatus 1 is one of the nodes communicably connected to the network NW. The information processing apparatus 1 can communicate with one or more other information processing apparatuses 2 to 5 via the network NW. In FIG. 4, five information processing apparatuses 1 to 5 are connected to the network NW, but the number of information processing apparatuses is arbitrary. Since the hardware configurations of the information processing apparatuses 2 to 5 are the same as that of the information processing apparatus 1, the description thereof is omitted here.

[0025] The information processing apparatus 1 is a computer such as a server belonging to a cloud computing system or other computing system. As an alternative, the information processing apparatus 1 may be a mobile device such as a mobile phone, a smartphone, a wearable device, or a tablet. As another alternative, the information processing apparatus 1 may be a general-purpose device such as a PC or a dedicated device. "PC" is an abbreviation for personal computer.

[0026] The internal configuration of the information processing apparatus 1 will be described in detail with reference to FIG. 5.

[0027] The information processing apparatus 1 includes a control unit 11, a communication unit 12, and a storage unit 13. Each component of the information processing apparatus 1 is communicably connected to each other via, for example, a dedicated line.

[0028] The control unit 11 includes, for example, one or more general-purpose processors including a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). The control unit 11 may include one or more dedicated processors specialized for specific processing. Instead of including a processor, the control unit 11 may include one or more dedicated circuits. 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 include an ECU (Electronic Control Unit). The control unit 11 transmits and receives arbitrary information via the communication unit 12.

[0029] The communication unit 12 includes a communication module corresponding to one or more wired or wireless LAN (Local Area Network) standards for connecting to the network NW. The communication unit 12 may include a module corresponding to one or more mobile communication standards including LTE (Long Term Evolution), 4G (4th Generation), or 5G (5th Generation). The communication unit 12 may include a communication module or the like corresponding to one or more short-range communication standards or specifications including Bluetooth (registered trademark), AirDrop (registered trademark), IrDA, ZigBee (registered trademark), Felica (registered trademark), or RFID. The communication unit 12 transmits and receives any information via the network NW.

[0030] The storage unit 13 includes, for example, a semiconductor memory, a magnetic memory, an optical memory, or a combination of at least two of these, but is not limited thereto. The semiconductor memory is, for example, a RAM or a ROM. The RAM is, for example, an SRAM or a DRAM. The ROM is, for example, an EEPROM. The storage unit 13 may function as, for example, a main storage device, an auxiliary storage device, or a cache memory. The storage unit 13 may store the information of the result analyzed or processed by the control unit 11. The storage unit 13 may store various information related to the operation or control of the information processing apparatus 1. The storage unit 13 may store a system program, an application program, and embedded software, etc. The storage unit 13 may be provided outside the information processing apparatus 1 and accessed from the information processing apparatus 1.

[0031] As an example, the network NW is a distributed ledger (Hyperledger)-type blockchain network. In this case, all nodes connected to the network NW hold the same data as one or more blocks in time series.

[0032] The network NW may be a public network connected to the Internet or a private network.

[0033] As shown in FIG. 6, the storage unit 13 of the information processing apparatus 1 stores the blockchain BC. The blockchain BC is shared by all nodes in the blockchain network NW. For the sake of convenience of explanation here, a case where the blockchain BC includes the first block B1, the second block B2, the third block B3, and the fourth block B4 will be described. The number of blocks included in the blockchain BC is arbitrary.

[0034] The first block B1 is the first block of the blockchain BC and includes transaction data T1. In FIG. 6, one block includes three pieces of transaction data. However, the number of pieces of transaction data included in one block is arbitrary.

[0035] The second block B2 includes the hash H2 of the previous block, the first block B1, the nonce value N2 corresponding to the hash H2, and the transaction data T2.

[0036] The descriptions of the third block B3 and the fourth block B4 are omitted to avoid redundant explanations.

[0037] The control unit 11 of the information processing apparatus 1 integrates the mill sheet information of a steel product and the certification information that certifies that the power used in the electric furnace EF during the production of the steel product is power defined by non-fossil value or zero-emission value. Here, the certification information can be obtained by the following method. To realize that the power used in the electric furnace EF is power defined by non-fossil value or zero-emission value, first, the power consumption per ton of steel is calculated from the actual factory power consumption corresponding to one heat of the electric furnace EF in which the steel product with the production lot number described in the target mill sheet was produced. The calculation may be performed by the control unit 11 (for example, a process computer) or manually (the same applies hereinafter). One heat is the molten steel melted once in the electric furnace EF. Steel products are produced by lot from the melted molten steel. Next, the actual power consumption used to produce the target steel product is calculated by multiplying the power consumption per ton of steel by the product weight described in the target mill sheet. By setting the power of this actual power consumption as non-fossil power, it is possible to realize and prove that the power used in the electric furnace EF is power defined by non-fossil value or zero-emission value.

[0038] As a specific method of integrating the mill sheet information and the certification information, as shown in the production lot DB of FIG. 7, the control unit 11 stores the block B1 of the blockchain BC, the mill sheet information M1, and the certification information V1 in the storage unit 13 in association with the production lot L1. That is, the mill sheet information M1 and the certification information V1 are registered as transaction data in the block B1 of the blockchain BC. The registered information is stored as a token of the blockchain BC. As an alternative example, the certification information V1 may be embedded in the mill sheet information M1.

[0039] The control unit 11 can publicly disclose the mill sheet information M1 and the certification information V1 to any third party via the Internet or the like.

[0040] Referring to FIG. 8, the information processing method by the control unit 11 of the information processing apparatus 1 will be described.

[0041] In step S1, the control unit 11 acquires mill sheet information about a production lot of steel products and proof information proving that the power used in the production of the production lot is power defined as having non-fossil value or zero-emission value.

[0042] In step S2, the control unit 11 integrates the mill sheet information and the proof information by associating them.

[0043] In step S3, the control unit 11 registers the associated mill sheet information and proof information in the network NW (for example, the blockchain network NW). Step S3 is optional.

[0044] In step S4, the control unit 11 publishes the associated mill sheet information and proof information on the Internet. Step S4 is optional.

[0045] [Modification Example] In the above embodiment, the mill sheet information and the proof information are stored in the storage unit 13 in an associated manner. However, there may be cases where the control unit 11 cannot obtain proof information such as a green power certificate. Therefore, when the power generation process of the power purchased by the power consumer is a process that comprehensively uses renewable energy and energy other than renewable energy, the control unit 11 can specify only the power derived from renewable energy among the purchased and used power. Such specification can be performed using any proof information (for example, carbon dioxide emission coefficient (residue)) published by a power company or the like. The control unit 11 may store the proof information in association with the mill sheet information.

[0046] As described above, when the power generation process of the power purchased by the power consumer is a process that comprehensively utilizes renewable energy and energy other than renewable energy, it is only possible to identify the power derived from renewable energy among the purchased and used power. The reason for the identifiability is as defined as follows in the "Ministry of Economy, Trade and Industry, 15th General Resources Energy Council, Electricity and Gas Business Subcommittee, Electricity and Gas Basic Policy Subcommittee, System Review Working Group (November 28, 2017)". That is, when it is assumed that non-fossil certificates that remain unsold without agreement will occur as a result of the auction of non-fossil certificates subject to FIT (Feed-in Tariff: Fixed Price Purchase System), such non-fossil certificates cannot be carried over after the next fiscal year and are regarded as "surplus non-fossil electricity equivalent". Among the environmental values related to the surplus non-fossil electricity equivalent, the zero-emission value is distributed according to the share of the sold electricity quantity without burying the value in view of the fact that the customer bears the cost as the FIT levy.

[0047] Furthermore, the carbon dioxide emission factor of the power company for this year may be disclosed after the end of the year. In this case, the carbon dioxide emission factor for this year can be calculated by the control unit 11 according to the following procedure. Procedure 1. Estimate the available amount of non-fossil power based on the carbon dioxide emission factor and non-fossil power ratio of the previous year, and reflect the estimation result in the planned power consumption plan to be used in the factory this year. As an alternative example, the non-fossil power ratio may adopt the target value of the renewable energy ratio for this year described in the energy and environment plan document published by an arbitrary local government. Procedure 2. Allocate non-fossil power for this year according to the requests from customers. Procedure 3. When the carbon dioxide emission factor for this year is disclosed, adjust and confirm the actual performance of the allocated amount of non-fossil power and the allocated amount of the remaining power other than non-fossil power.

[0048] When the power generation process is a process that comprehensively utilizes renewable energy and energy other than renewable energy, the method of specifying only the power derived from renewable energy among the purchased and used power can be obtained by the following method. To realize that the power used in the electric furnace EF is power defined as having a non-fossil value or zero emission value, first, the power consumption per ton of steel is calculated from the factory power consumption record corresponding to one heat of the electric furnace EF in which the steel product with the production lot number described in the target mill sheet was produced. The calculation may be performed by the control unit 11 (for example, a process computer) or manually (the same applies hereinafter). One heat is the molten steel melted at one time in the electric furnace EF. From the melted molten steel, steel products are produced by lot. Next, the amount of molten steel produced from power derived from renewable energy is calculated by multiplying the amount of molten steel melted at one time by the renewable energy ratio published by an electric power company or the like. The control unit 11 associates and integrates the amount of power derived from renewable energy used with the mill sheet of the steel product produced using the molten steel produced from power derived from renewable energy.

[0049] [Effect] As described above, according to this embodiment, steel products are manufactured in an electric furnace using electricity defined as having non-fossil value or zero-emission value. Here, the steel products manufactured in the electric furnace are composed of only a single material of steel, and the main raw material is iron scrap. Also, most of the energy (e.g., 80% or more) used in the electric furnace is electricity. Due to these circumstances, by procuring electricity defined as having non-fossil value or zero-emission value (e.g., green electricity) and using it in the electric furnace, it is possible to offset the carbon dioxide emitted from coke, etc. used in the manufacturing process. That is, offsetting is done by calculating the non-fossil electricity usage corresponding to the energy of coke, etc., additionally describing the calculated non-fossil electricity usage on the mill sheet, and associating it with the steel product as the non-fossil electricity used in the manufacture of the steel product. Thus, carbon-neutral steel products can be manufactured. Also, even for small lots, it is easy to prove that the steel product is carbon-neutral. Therefore, PR (promotion, understanding facilitation) activities such as increasing the selling price are easy.

[0050] In contrast, for the manufacture of automobiles, etc., various parts from various raw materials are used. Also, the energy used during manufacture covers a wide range such as electricity, gas, and oil. In this case, to prove that the product is carbon-neutral, it is necessary to prove that each individual part is carbon-neutral. For this reason, the proof is very complicated and difficult. Although eco-labels, etc. based on LCA evaluation can be used to achieve carbon neutrality, since qualitative evaluations are made, the impact is weak. Also, the evaluation is only an overall evaluation. Therefore, in the case of manufacturing automobiles, etc., it is highly likely to be difficult to manufacture carbon-neutral products.

[0051] Also according to this embodiment, the information processing apparatus 1 associates mill sheet information about a production lot of steel products with proof information that proves that the power used in the production of the production lot is power defined as having a non-fossil value or a zero-emission value. With this configuration, the steel product becomes one in which the mill sheet information about the production lot is associated with the proof information that proves that the power used in the production of the production lot is power defined as having a non-fossil value or a zero-emission value, and it is easy to prove that the manufactured steel product is carbon neutral.

[0052] Also according to this embodiment, the network NW includes a blockchain network, and the associated mill sheet information and proof information are registered on the blockchain. When blockchain technology is used in this way, the registered information is distributed and shared by all nodes. That is, a central administrator is not required. Therefore, the following effects are achieved. · Tampering is difficult · Since there is no single point of failure, there is no system down · Data sharing with other systems is easy Thus, the information processing apparatus 1 can realize a system with high security and low cost. Furthermore, since all data is recorded on the blockchain, traceability is ensured.

[0053] Also according to this embodiment, the control unit 11 publicly discloses the associated mill sheet information and proof information on the Internet. With this configuration, the information processing apparatus 1 can externally show that the steel product is carbon neutral.

[0054] Also according to the present embodiment, when the power generation process of the purchased power is a process that comprehensively uses renewable energy and energy other than renewable energy, the control unit 11 identifies the power derived from renewable energy among the power, and associates proof information proving that the identified power is power derived from renewable energy with the mill sheet information about the production lot of the steel product. With this configuration, even when energy other than renewable energy is used in the power generation process, the information processing device 1 can prove that the steel product is partially carbon neutral.

[0055] It should be noted that although the present disclosure is described based on the drawings and embodiments, those skilled in the art may make various modifications and alterations based on the present disclosure. In addition, changes can be made without departing from the spirit of the present disclosure. For example, the functions and the like included in each means or each step can be rearranged so as not to be logically contradictory, and a plurality of means or steps can be combined into one or divided.

[0056] For example, in the above embodiment, the program that executes all or part of the functions or processes of the information processing device 1 can be recorded on a computer-readable recording medium. The computer-readable recording medium includes a non-transitory computer-readable medium, and for example, a magnetic recording device, an optical disk, a magneto-optical recording medium, or a semiconductor memory. The distribution of the program is performed, for example, by selling, transferring, or lending a portable recording medium such as a DVD (Digital Versatile Disc) or a CD-ROM (Compact Disc Read Only Memory) on which the program is recorded. Also, the distribution of the program may be performed by storing the program in the storage of an arbitrary server and transmitting the program from the arbitrary server to another computer. Also, the program may be provided as a program product. The present disclosure can also be realized as a program executable by a processor.

[0057] A computer stores, for example, a program recorded on a portable recording medium or a program transferred from a server, once, in a main memory device. Then, the computer reads the program stored in the main memory device by a processor and executes processing according to the read program by the processor. The computer may directly read a program from a portable recording medium and execute processing according to the program. The computer may sequentially execute processing according to the received program each time a program is transferred from a server to the computer. The processing may be executed by a so-called ASP type service that realizes functions only by execution instructions and result acquisition without transferring a program from the server to the computer. "ASP" is an abbreviation of application service provider. A program includes information for use in processing by an electronic computer that conforms to the program. For example, data that is not a direct instruction to a computer but has a property of defining the processing of the computer corresponds to "what conforms to the program".

Explanation of Signs

[0058] NW Network 1 Information Processing Device 11 Control Unit 12 Communication Unit 13 Storage Unit 2 to 5 Information Processing Devices

Claims

[Claim 1] An information processing method by an information processing device, the information processing device includes a control unit, a communication unit, and a storage unit, and is communicatively connected to a network via the communication unit; By the control unit, Obtaining property information indicative of at least one of chemical and physical properties of the manufactured product; Obtaining certification information that certifies that at least a portion of the electricity used in the production of the product is electricity defined as non-fossil value or zero-emission value, and carbon footprint information of the product; storing the property information, the certification information, and the carbon footprint information in the storage unit in association with a production lot of the product; issuing a certificate for said production lot indicating said quality information, said certification information and said carbon footprint information; An information processing method comprising:

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