Co2eq emission evaluation device, co2eq emission evaluation system, and co2eq emission evaluation method

Abstract

The present invention evaluates CO2eq emission at the time of hydrogen trading. The present disclosure is a CO2eq emission evaluation device that is capable of communicating, through a network, with an authentication system and a factory system involved in hydrogen production, and that comprises: a communication unit that receives, from the factory system, the CO2 emission when hydrogen is produced and hydrogen identification information of produced hydrogen; and an authentication information acquisition unit that requests the authentication system for authentication of the CO2 emission associated with the hydrogen identification information, and acquires authentication information of the CO2 emission associated with the hydrogen identification information.

Description

CO2eq emission evaluation device, CO2eq emission evaluation system, CO2eq emission evaluation method

[0001] The present disclosure provides ２ eq emission evaluation device, CO ２ eq emission evaluation system and CO ２ This relates to the eq emission evaluation method.

[0002] Even if it is burned, CO ２ Hydrogen, which does not emit CO2, is expected to be an energy source that can mitigate global warming. Hydrogen can be produced from a variety of resources, but some CO2 is emitted during the production process and when hydrogen is extracted from hydrogen carriers. ２ may be emitted.

[0003] There is known a technology devised for external charging using renewable energy (see, for example, Patent Document 1). ２ When free charging is performed, CO ２ A server is disclosed that issues coupons that can be used at stores located near the power supply facility to users of vehicles that are being charged for free.

[0004] Patent No. 2020-102024

[0005] However, in the conventional technology, when trading hydrogen, CO ２ The problem is that the extent to which eq has been released has not been evaluated.

[0006] In view of the above-mentioned problems, the present disclosure provides a method for reducing CO ２ To provide a technology capable of evaluating eq emissions.

[0007] The present disclosure provides a CO2 sensor that can communicate with a factory system and an authentication system related to the production of hydrogen via a network. ２ An emission evaluation device for evaluating CO emissions during production of hydrogen from the factory system. ２ a communication unit that receives hydrogen identification information of the emitted hydrogen and the produced hydrogen, and ２ A request is made to the certification system for certification of the amount of CO emissions associated with the hydrogen identification information. ２and an authentication information acquisition unit that acquires authentication information of the emission amount.

[0008] The present disclosure provides a method for reducing CO ２ It is possible to provide a technique for evaluating eq emissions.

[0009] 1 is a schematic diagram illustrating the process of producing a hydrogen carrier and extracting hydrogen from the hydrogen carrier. ２ FIG. 1 is a diagram illustrating an example of the system configuration of an emission evaluation system. ２ 1 is a diagram illustrating an example of a hardware configuration of an emission amount evaluation device, an authentication system, and a factory system. ２ FIG. 1 is a diagram illustrating the functional configuration of an example of an emission evaluation system. FIG. 2 is a diagram illustrating an authentication method using an electronic signature. FIG. 3 is a diagram illustrating the authentication phases for a hydrogen source, a hydrogen carrier, and hydrogen extraction. FIG. 4 is a diagram illustrating a case where hydrogen extracted from a hydrogen carrier is mixed with hydrogen produced from other raw materials. FIG. 5 is an example of a flowchart illustrating the flow in which a simulation unit estimates the amount of extracted hydrogen. ２ FIG. 1 is an example of a flowchart illustrating the overall flow of processing performed by an emission assessment device and a factory system. FIG. 2 is an example of a flowchart illustrating the flow of carbon intensity calculation and authentication in a case where there is one hydrogen source. FIG. 3 is an example of a flowchart illustrating the flow of carbon intensity calculation and authentication in a case where there are two hydrogen sources. FIG. 4 is an example of a flowchart illustrating the flow of carbon intensity calculation and authentication in a case where there are two hydrogen carriers. FIG. 5 is an example of a flowchart illustrating the flow of carbon intensity calculation and authentication in a case where hydrogen is extracted from a hydrogen carrier and produced by an existing process. FIG. 6 is a diagram illustrating a case where hydrogen extracted from an MCH is increased in production in addition to hydrogen produced from existing raw materials. FIG. 7 is a diagram illustrating a case where the production rate of hydrogen produced from existing raw materials is slowed down to create room (space) for hydrogen extracted from an MCH.

[0010] As an example of an embodiment of the present invention, ２ Emissions assessment system and CO ２ CO emissions assessment system ２The emission evaluation method will be explained with reference to the drawings.

[0011] <CO ２ Overview of the emissions assessment system> Hydrogen is produced through the processes of renewable energy production, low-carbon hydrogen production, hydrogen production using renewable energy, hydrogen carrier production, and extraction of hydrogen from the hydrogen carrier. ２ Since each process is carried out in different locations, the final buyer of the hydrogen will have to decide how much CO2 is emitted. ２ It is unclear whether the hydrogen produced is CO ２ It has been difficult to conduct fair transactions that reflect the value according to the amount of emissions. Therefore, in this disclosure, authentication is performed at each phase of hydrogen production, etc., and authentication information is provided along with the hydrogen.

[0012] Figure 1 is a schematic diagram illustrating the process of manufacturing a hydrogen carrier and extracting hydrogen from it. A hydrogen carrier refers to a medium and method for efficiently storing and transporting hydrogen, which has low storage and transport efficiency when in gaseous form. Examples of hydrogen carriers include MCH (methylcyclohexane) and liquid hydrogen. Extracting hydrogen refers to extracting hydrogen from the hydrogen carrier (dehydrogenation).

[0013] In FIG. ２ Free hydrogen is produced and this CO ２ A hydrogen carrier containing free hydrogen is produced at a production facility 63. The hydrogen produced at the production facility 63 is transported to a storage facility 61. A hydrogen extraction facility 62 extracts hydrogen from the hydrogen carrier at the storage facility 61. The extracted hydrogen is supplied to a customer 64. The customer 64 may be a variety of entities, such as a hydrogen station, an ordinary household, a power plant, or a factory.

[0014] As for the business partner 64, how much CO does the hydrogen they purchase actually produce? ２ There are cases where it is desirable to trade products with their value reflected in the amount of CO emissions they are produced with. ２ CO is emitted mainly during renewable energy production, hydrogen production, transportation, and hydrogen extraction. ２The emission evaluation system is, for example, the CO ２ Calculate the amount of CO ２ Calculate carbon intensity from emissions. ２ The carbon intensity assessment system certifies carbon intensity, hydrogen, and processes (such as when hydrogen is produced and when hydrogen is extracted) in association with each other as follows: Carbon intensity is an index that indicates the amount of carbon emitted per unit when a product is produced. The smaller the value, the lower the CO ２ Carbon intensity means that the carbon footprint is low. ２ CO emissions ２ Emissions.

[0015] (i) CO ２ The emission evaluation device certifies the carbon intensity in association with the hydrogen during hydrogen production.

[0016] (ii) CO ２ The emission evaluation device certifies the carbon intensity in association with the hydrogen when the hydrogen is extracted.

[0017] The carbon intensity of the hydrogen being traded is associated with the hydrogen and is certified, so even hydrogen produced overseas or in remote locations can be traded fairly, with a value that reflects its carbon intensity. This also ensures transparency and traceability in hydrogen trading.

[0018] <Terminology> Certification refers to proving that a document (in this embodiment, electronic data) has been created and written in accordance with legitimate procedures. The authentication method may be a method agreed upon among multiple countries or authentication performed by a third-party organization. In this embodiment, it refers to proving that the amount of CO2 emissions emitted during hydrogen production, etc. is correct. Certification information is information that proves that authentication has been performed.

[0019] Hydrogen identification information is information for identifying hydrogen that has been produced, etc. Hydrogen is amorphous, but is identified by unique information such as the production location, period, and production volume. If the production location is the same, the hydrogen identification information may be a lot number linked to the period and production volume.

[0020] CO ２ eq means "CO ２ equivalent” and CO ２ It is a gas that has a greenhouse effect equivalent to that of CO2. ２ In this embodiment, CO ２ The evaluation of emissions will be explained below, but emissions of other gases can be calculated in the same way. ２ It is possible to evaluate CO eq emissions. ２ The emission amount evaluation device 10 is an example of a CO2eq emission amount evaluation device.

[0021] <System Configuration Example> Figure 2 shows the CO ２ FIG. 1 is a diagram illustrating an example of the system configuration of an emission evaluation system 100. ２ In the emission evaluation system 100, CO ２ The emission evaluation device 10, the authentication system 30, and the factory system 40 are communicably connected via a network N. The network N may be a wide area network such as the Internet, or may be a dedicated network such as a VPN (Virtual Private Network). ２ The emission evaluation device 10 only needs to be able to communicate with the authentication system 30 and the factory system 40, and the authentication system 30 and the factory system 40 do not necessarily need to communicate with each other.

[0022] The authentication system 30 issues a Renewable Energy Certificate (REC) and performs the above authentications (i) and (ii) when hydrogen is produced and extracted. The specific authentication method is not a feature of this embodiment, and any authentication method may be adopted. As an example, the authentication system 30 performs authentication by attaching an electronic signature to the carbon intensity, etc. The method of attaching an electronic signature will be described in detail later.

[0023] The factory system 40 is a system such as a server that manages the facilities of a factory that produces renewable energy, produces hydrogen, or extracts hydrogen. ２The factory system 40 produces hydrogen from raw materials 1 and 2 (e.g., LPG (Liquefied Petroleum Gas)) using existing processes. The factory system 40 also extracts hydrogen from the hydrogen carrier using a method suitable for the hydrogen carrier (e.g., dehydrogenation). The hydrogen carrier may be ammonia, a hydrogen storage material, methane, a hydrogen storage material, or the like, or may be transported in the form of liquefied hydrogen or compressed hydrogen.

[0024] Therefore, the factory system 40 does not need to be located in one place, and may be located in each factory that produces hydrogen and each factory that extracts hydrogen. Furthermore, the factory system 40 may be called any name, such as a plant, refinery, or production facility, as long as it is a facility that produces or extracts hydrogen.

[0025] CO ２ The emission evaluation device 10 is an information processing system such as a server managed by a company engaged in one or more of the distribution, production, and / or sale of hydrogen. ２ The emission evaluation device 10 communicates with the factory system 40 and measures CO emissions during renewable energy production, hydrogen production, hydrogen carrier production, hydrogen extraction, etc. ２ Calculate emissions and carbon intensity, and compare carbon intensity with thresholds to calculate CO ２ We also evaluate whether it can be called CO ２ The emission evaluation device 10 communicates with the certification system 30, requests the certification system 30 to certify the carbon intensity of each process, and obtains certification information. The processes to be certified are, for example, hydrogen production and hydrogen extraction, but are not limited to these, and may include CO 2 production, hydrogen carrier production, etc. ２ Any process that releases

[0026] In addition, CO ２ The emission amount evaluation device 10 may be realized by cloud computing or by a single information processing device. Cloud computing refers to a form in which resources on a network are used without being aware of specific hardware resources. ２The emission assessment device 10 may be located on the Internet or on-premise.

[0027] Although not shown in FIG. 2, a terminal device operated by a user may be connectable to the network N. ２ The emission assessment device 10, the authentication system 30, and the factory system 40 can have web server functions, so that a user can connect a terminal device to these devices to display and transmit any information, such as authentication information. The terminal device may be, for example, a personal computer (PC), a smartphone, a tablet terminal, or the like used by the user, but any device capable of running a web browser may be used.

[0028] <Hardware Configuration Example> Referring to FIG. 3, ２ The hardware configurations of the CO emission evaluation device 10, the authentication system 30, and the factory system 40 will be described. ２ 3 is a diagram illustrating an example of a hardware configuration of an emission evaluation device 10, an authentication system 30, and a factory system 40. As shown in FIG. ２ The emission evaluation device 10, the authentication system 30, and the factory system 40 are constructed by a computer 500, and include a CPU 501, a ROM 502, a RAM 503, an HD (Hard Disk) 504, an HDD (Hard Disk Drive) controller 505, a display 506, an external device connection I / F (Interface) 508, a network I / F 509, a bus line 510, a keyboard 511, a pointing device 512, a DVD-RW (Digital Versatile Disk Rewritable) drive 514, and a media I / F 516.

[0029] Of these, the CPU 501 controls the overall operation of the computer 500. The ROM 502 stores programs used to drive the CPU 501, such as IPL. The RAM 503 is used as a work area for the CPU 501. The HDD 504 stores various data, such as programs. The HDD controller 505 controls the reading and writing of various data from and to the HDD 504 under the control of the CPU 501. The display 506 displays various information, such as a cursor, menus, windows, characters, or images. The external device connection I / F 508 is an interface for connecting various external devices. In this case, external devices include, for example, USB (Universal Serial Bus) memory and printers. The network I / F 509 is an interface for data communication using the network N. The bus line 510 is an address bus, data bus, or the like, for electrically connecting the various components, such as the CPU 501, shown in FIG. 3 .

[0030] The keyboard 511 is a type of input means having multiple keys used to input characters, numbers, various instructions, etc. The pointing device 512 is a type of input means for selecting and executing various instructions, selecting a processing target, moving a cursor, etc. The DVD-RW drive 514 controls reading and writing of various data from a DVD-RW 513, which is an example of a removable recording medium. Note that the DVD-RW drive 514 is not limited to a DVD-RW, and may be a DVD-R or the like. The media I / F 516 controls reading and writing (storing) of data from a recording medium 515, such as a flash memory.

[0031] <Functions> Next, referring to FIG. 4, the CO ２ The functional configuration of the CO emission evaluation system 100 will be described. ２ FIG. 1 is a diagram illustrating a functional configuration of an example of an emission evaluation system 100.

[0032] <<Authentication System>> The authentication system 30 has a communication unit 31, an authentication processing unit 32, and a storage unit 33. Each functional unit of the authentication system 30 is a function or means realized by the CPU 501 shown in FIG. 3 executing instructions included in one or more programs installed in the authentication system 30.

[0033] The communication unit 31 ２ The communication unit 31 transmits and receives various information to and from the emission evaluation device 10. ２ Receives requests from the emission evaluation device 10 and transmits authentication information to the CO ２ The authentication information includes, for example, an REC and an electronic signature.

[0034] The authentication processing unit 32 ２ The authentication processing unit 32 authenticates the information to be authenticated that is sent from the emission evaluation device. The authentication processing unit 32 performs the following authentications, for example: ２ The evaluation results, such as whether it can be called CO2-free, and hydrogen identification information A (production location, production period, production volume, CO2) ２ The certification processing unit 32 certifies the carbon intensity, CO2 emissions based on the carbon intensity, etc., and the process name (when hydrogen is produced). The certification criteria may depend on whether the requirements of the consumer are met. ２ The evaluation result of whether it can be called free, hydrogen identification information B for identifying hydrogen (extraction location, extraction period, extraction amount, CO ２ The authentication processing unit 32 authenticates the amount of hydrogen discharged, the process name (when hydrogen is extracted, etc.), and the process name (when hydrogen is extracted). The authentication processing will be described in detail with reference to Fig. 5. The storage unit 33 stores various types of authentication information created by the authentication processing unit 32.

[0035] <<Factory System>> The factory system 40 has a communication unit 41, a production management unit 42, a removal management unit 43, and a simulation unit 44. Each functional unit of the factory system 40 is a function or means realized by the CPU 501 shown in FIG. 3 executing instructions included in one or more programs installed in the factory system 40.

[0036] The communication unit 41 ２The communication unit 41 transmits and receives various information to and from the emission evaluation device 10. ... ２ CO emissions and process names ２ The data is transmitted to the emission evaluation device 10 .

[0037] During hydrogen production, the production management unit 42 manages the production location, production period, production amount, CO ２ Create emission amounts, process names, etc.

[0038] When extracting hydrogen, the extraction management unit 43 determines the extraction location, extraction period, extraction amount, CO ２ Create emission amounts, process names, etc.

[0039] The simulation unit 44 is a simulator that estimates the amount of hydrogen extracted based on the raw material composition of the hydrogen carrier and the operating conditions when extracting hydrogen. ２ Even if free hydrogen and hydrogen from existing processes are mixed, CO ２ The amount of free hydrogen extracted can be estimated.

[0040] <<CO ２ Emissions evaluation device >> CO ２ The emission amount assessment device 10 includes a communication unit 11, a carbon intensity calculation unit 12, an authentication information acquisition unit 13, a provision unit 14, a reduction amount calculation unit 15, a power generation amount calculation unit 16, an incentive calculation unit 17, and a storage unit 18. ２ Each functional unit of the emission evaluation device 10 is a function or means realized by the CPU 501 shown in FIG. 3 executing instructions contained in one or more programs installed in the factory system 40.

[0041] The communication unit 11 transmits and receives various information to and from the authentication system 30 and the factory system 40. The communication unit 11 transmits information to be authenticated to the authentication system 30 and receives authentication information from the authentication system 30. The communication unit 11 receives information created by the production management unit 42 and the removal management unit 43 from the factory system 40.

[0042] When hydrogen is produced from different hydrogen sources and when hydrogen is extracted from different hydrogen carriers, the carbon intensity calculation unit 12 calculates the respective CO ２ Using the emissions, the CO ２ Calculate the amount of emissions, as detailed below.

[0043] The authentication information acquisition unit 13 acquires the carbon intensity, the CO ２ The evaluation result of whether the hydrogen can be called free, the hydrogen identification information A or B for identifying the hydrogen, and the process name (when hydrogen is produced) are requested from the authentication system 30, and authentication information is obtained. The authentication information is stored in the storage unit 18.

[0044] The providing unit 14 provides the authentication information to business partners who require the authentication information, such as business partners of the hydrogen carrier containing the produced hydrogen and business partners of the hydrogen extracted from the hydrogen carrier.

[0045] The reduction amount calculation unit 15 calculates the CO ２ Benchmarked CO by introducing free hydrogen (i.e., with carbon intensity) ２ CO emissions reduced ２ Emissions and CO ２ Calculate the reduction rate.

[0046] The power generation amount calculation unit 16 calculates the CO ２ Power generated by introducing free hydrogen (i.e., using carbon intensity), 100% CO ２ The power generation amount calculation unit 16 calculates the amount of power generation that can be considered as CO ２ Emissions are also calculated.

[0047] The incentive calculation unit 17 calculates the CO ２ CO emissions reduced by introducing free hydrogen ２ The amount of CO2 reduction is converted into a monetary value. ２ This is the financial effect of introducing free hydrogen.

[0048] <Authentication System> The authentication method performed by the authentication system 30 will be described with reference to Fig. 5. Fig. 5 is a diagram for explaining an authentication method using an electronic signature. In Fig. 5, carbon intensity, CO based on carbon intensity,２ The evaluation results of whether it can be called free, hydrogen specific information A or B, and process name (renewable energy production, hydrogen production, hydrogen carrier production, hydrogen extraction, etc.) are to be certified.

[0049] (1) The authentication processing unit 32 calculates a hash value of the carbon intensity, the evaluation result, the hydrogen identification information A or B, and the process name.

[0050] (2) The authentication processing unit 32 ２ The emission amount evaluation device 10 encrypts the hash value with a preset private key 53. The encrypted hash value is called a digital signature 54.

[0051] (3) The electronic signature 54 is attached to the electronic data 51 to be authenticated (carbon intensity, evaluation result, hydrogen identification information A or B, and process name).

[0052] (4) The authentication processing unit 32 attaches the digital certificate 52 of the authentication system 30 to the digital data 51. The digital certificate 52 is ２ The electronic data 51 includes a public key 52a of the emission evaluation device 10 and an electronic signature 52b of the authentication system 30. The public key 52a is paired with a private key 53, and information encrypted with the private key 53 can only be decrypted with the paired public key 52a. The electronic signature 52b of the authentication system 30 is used to certify that the electronic certificate 52 has been granted by the authentication system 30. The electronic data 51, the electronic signature 54, and the electronic certificate 52 constitute authentication information 50.

[0053] The flow of verifying the electronic data 51 to which the digital signature 54 and digital certificate 52 created in this way are attached is as follows (not shown). It is assumed that the verification will be performed by a business partner purchasing hydrogen, but anyone can perform the authentication. (5) The business partner calculates hash values ​​of the carbon intensity, evaluation results, hydrogen identification information A or B, and process name. (6) The business partner decrypts the digital signature 54 attached to the digital data 51 to the original hash value using the public key 52a. (7) If the hash value in (5) and the hash value in (6) match, the purchaser can confirm that the digital data 51 has not been tampered with and that the digital data 51 is CO ２ It can be determined that the information has been issued by the emission assessment device 10.

[0054] The above authentication method is an example, and authentication may be performed by a method other than authentication by a third party or the like.

[0055] <Hydrogen Source, Hydrogen Carrier, and Hydrogen Extraction> The phase in which authentication information is created will be described with reference to Fig. 6. Fig. 6 is a diagram illustrating the phase of authentication for the hydrogen source, hydrogen carrier, and hydrogen extraction. In Fig. 6, two hydrogen 71 are produced. First, CO ２ The emission evaluation device can certify (A) the carbon intensity at the time of production. A hydrogen carrier production facility 72 produces hydrogen carriers from two hydrogen sources (the hydrogen source may be single or multiple). The hydrogen carriers are stored in a storage facility 73. As an example, the carbon intensity etc. of the hydrogen contained in this storage facility 73 is certified (B). That is, CO ２ The emission assessment device 10 causes the certification system 30 to certify the carbon intensity of a hydrogen carrier (liquid water, MCH, etc.) that is a mixture of hydrogen produced from one or more hydrogen sources.

[0056] The hydrogen carriers in storage facility 73 are transported and stored in storage facility 75 together with hydrogen carriers in another storage facility 74. The hydrogen carriers stored in storage facility 74 are ２ The hydrogen may or may not be free hydrogen. The hydrogen carrier may be a single carrier or multiple carriers. Hydrogen is extracted from the hydrogen carrier in the storage facility 75 by a hydrogen extraction device 76. When extracting hydrogen, CO ２ The emission assessment device 10 causes the certification system 30 to certify (C) the carbon intensity of the hydrogen extracted from the storage facility 75. ２ If not free hydrogen, some of the hydrogen removed from storage facility 75 may be CO ２ Not free hydrogen, but some CO ２ In this case, the extracted CO ２ The amount of free hydrogen is calculated from the mixture ratio of the hydrogen carrier in the storage facility 75. The amount of free hydrogen is calculated from the mixture ratio of the hydrogen carrier in the storage facility 74. ２ If it is free hydrogen, all of the hydrogen removed from storage facility 75 will be CO ２Although it is free hydrogen, CO ２ The reduction amount is different for each storage facility 73 and 74. ２ It is preferable to estimate the amount of reduction.

[0057] CO ２ The emission evaluation device 10 ２ The mixture ratio of free hydrogen and non-free hydrogen, or if all hydrogen sources are CO ２ Free hydrogen but CO ２ CO2 reductions vary depending on the amount of CO2 reduction. ２ Calculate the amount of CO reduction. ２ The emission evaluation device 10 calculates the CO ２ It is also possible to communicate the reduction amount, and to show that hydrogen for a specific destination is 100% CO ２ It can also be communicated as free hydrogen.

[0058] 7 is a diagram illustrating a case where hydrogen extracted from a hydrogen carrier is mixed with hydrogen produced from other raw materials. ２ A hydrogen carrier containing free hydrogen is transported and stored in a storage facility 81. Hydrogen is extracted from the hydrogen carrier in the storage facility 81 by a hydrogen extraction facility 82. After hydrogen is extracted from the hydrogen carrier, toluene is recovered in a toluene recovery device 83, and CO ２ It is transported to the production site of free hydrogen.

[0059] On the other hand, hydrogen is also produced from various raw materials within the refinery (this is called the existing process 84), and when hydrogen is extracted, CO ２ Free hydrogen is mixed with hydrogen from an existing process. The hydrogen produced by the existing process 84 is CO ２ In such cases, the CO2 content of the total hydrogen consumed within the refinery is ２ Based on the percentage of hydrogen certified as CO2-free, ２ Evaluate whether emissions have been reduced.

[0060] The sales company produces hydrogen and CO ２ When selling to customers as free hydrogen, the hydrogen from existing processes and CO ２Based on the percentage of free hydrogen, CO ２ Only free hydrogen is considered to have been sold, and the certification for that amount can be passed on to the business partner. In addition, if the hydrogen is used on-site, the CO ２ Subtract the trading volume of free hydrogen.

[0061] <Calculation Example of Carbon Intensity> Next, a method for calculating the carbon intensity will be described.

[0062] (1) Carbon Intensity During Hydrogen Production The carbon intensity calculation unit 12 calculates the carbon intensity during hydrogen production in the following procedure. ２ The carbon intensity during the production of the hydrogen carrier is calculated assuming that the amount of emissions is zero. ２ The method for calculating the carbon intensity of hydrogen with different emissions is explained below. When there is one hydrogen source, the carbon intensity is calculated by the CO ２ It is the amount of CO emitted. ２ Emissions are relative values ​​per unit volume to the benchmark hydrogen production method.

[0063] Hydrogen Source 1: By-product Hydrogen CO ２ Emissions 1 Hydrogen source 2: Water electrolysis hydrogen CO ２ Emissions 0.1 Let's assume that hydrogen carriers are produced using these hydrogens and that the volume ratio is "1:1". Carbon intensity = 1 x 0.5 + 0.1 x 0.5 = 0.55 ... (1) This carbon intensity is calculated by dividing the CO ２ If the threshold for determining whether or not something is CO2-free is set to, for example, 0.6, then the total amount is CO2-free because it is below the threshold. ２ By authenticating the carbon intensity and evaluation results in relation to the produced hydrogen, it is possible to verify that the hydrogen source is CO2-free when trading hydrogen carriers. ２ It is possible to track whether hydrogen can be considered free. The value of hydrogen may be determined by agreement between the parties in the transaction.

[0064] (2) Carbon Intensity at the Time of Hydrogen Extraction The carbon intensity calculation unit 12 calculates the carbon intensity at the time of hydrogen extraction in the following procedure. ２The method for calculating the carbon intensity when hydrogen is extracted from hydrogen carriers with different emissions is explained below. When there is one hydrogen carrier, the carbon intensity is calculated by multiplying the CO ２ It is the emissions themselves.

[0065] Hydrogen Carrier 1: Australian CO ２ Free MCH-derived hydrogen CO ２ Emissions 0.1 Hydrogen carrier 2: Middle Eastern CO ２ Free MCH-derived hydrogen CO ２ Emissions 0.5 Let's assume that hydrogen is extracted from these hydrogen carriers and the volume ratio is "1:1". Carbon intensity = 0.1 x 0.5 + 0.5 x 0.5 = 0.30 ... (2) This carbon intensity is CO ２ If the threshold for determining whether or not something is CO2-free is set to, for example, 0.6, then the total amount is CO2-free because it is below the threshold. ２ By authenticating the carbon intensity and evaluation results in relation to the extracted hydrogen, it is possible to ensure that the hydrogen is CO2-free when trading or using hydrogen. ２ It is possible to track whether hydrogen can be considered free. The value of hydrogen may be determined by agreement between the parties in the transaction.

[0066] Alternatively, total CO ２ Calculate the total CO emissions up to the time of hydrogen use. ２ Total CO emissions ２ The degree to which emissions have been reduced may be evaluated. The value of hydrogen may also be determined by an agreement between the trading parties.

[0067] <CO ２ Calculating the amount of CO emissions reduction ２ The method for calculating the amount of CO emissions reduction is explained below. ２ The emission evaluation device 10 ２ Emissions reductions can also be included in the certification.

[0068] (1) In the case of self-consumption at the refinery, the reduction amount calculation unit 15 calculates the CO ２ Free Hydrogen CO ２The calculation method for calculating the amount of emission reduction is as follows: "t-CO2" means the amount of carbon dioxide in tons, and "t-H2" means the amount of hydrogen in tons. ２ Free hydrogen CO ２ Emissions (t-CO2) = CO ２ Free hydrogen amount (t-H2) x carbon intensity (t-CO2 / t-H2) (3) CO ２ Reduction amount (t-CO2) = CO ２ CO before replacing with free hydrogen ２ Emissions (t-CO2) - (CO from refinery hydrogen) ２ Emissions (t-CO2) + CO ２ Free hydrogen CO ２ Emissions (t-CO2)}...(4) ・CO ２ Reduction rate (%) = {CO from refinery hydrogen ２ Emissions (t-CO2) + CO ２ Free hydrogen CO ２ Emissions (t-CO2)} / CO ２ CO before replacing with free hydrogen ２ Emissions (t-CO2)...(5) The benchmark CO2 used to calculate carbon intensity ２ CO emissions from the production of hydrogen produced by refineries ２ In the case of emissions, CO ２ The reduction rate can be calculated as follows: ２ Reduction rate (%) = (CO ２ CO before replacing with free hydrogen ２ Emissions - CO ２ Free hydrogen CO ２ Emissions (t-CO2)) / CO ２ CO before replacing with free hydrogen ２ Emissions (t-CO2) ... (6) (2) When hydrogen is used for private power generation at refineries, etc., the reduction calculation unit 15 calculates the CO ２ CO when generating electricity using free hydrogen ２ The calculation method for the amount of reduced emissions is as follows: CO during power generation ２ Emissions (t-CO2 / MWh) = CO used for power generation ２Amount of free hydrogen (t-H2) x carbon intensity (t-CO2 / t-H2) / power generation (MWh) ... (7) When selling electricity, the CO ２ CO emissions after introduction ２ The difference in emissions is CO ２ The reduction in CO emissions is ２ This means that free hydrogen has already been introduced as a power generation fuel.

[0069] The power generation amount calculation unit 16 also calculates the carbon intensity of the CO ２ When generating electricity using free hydrogen, the amount of CO ２ Calculate the amount of electricity generated using free hydrogen. ２ The emission evaluation device 10 ２ The amount of electricity generated using free hydrogen can also be included in the certification. ２ Free power generation (MWh) = Total power generation (MWh) x {CO before introduction ２ Emissions (t-CO2 / MWh) - CO after installation ２ Emissions (t-CO2 / MWh) / CO before introduction ２ Emissions (t-CO2 / MWh) ... (8) When a refinery sells electricity, it sells it as "electricity with a carbon intensity of XX%." Alternatively, the 100% CO calculated using equation (8) ２ Only the free power generation (MWh) is "100% CO ２ The electricity is sold under the name "free electricity."

[0070] <Incentive Calculation Method> The incentive calculation unit 17 calculates the CO ２ Incentives (CO ２ The incentive calculation unit 17 can also include the incentive in the authentication target.

[0071] CO according to the hydrogen produced or supplied ２ The calculation method for free incentives is as follows: ２Reduction (t-CO2) = (1 - carbon intensity) x CO2 of benchmark hydrogen (during production or extraction) ２ Emissions (t-CO2) ...(9) ・CO ２ Free incentive (yen) = CO ２ Reduction amount (t-CO2) × CO ２ Price (yen / t-CO2) <Calculation of extracted amount of hydrogen by simulation> Figure 8 is a flowchart explaining the flow of estimating the extracted amount of hydrogen by the simulation unit 44. Estimation of the extracted amount of hydrogen by simulation is effective in cases such as when hydrogen extracted from the hydrogen carrier and hydrogen produced from raw materials are mixed, as shown in Figure 7.

[0072] The simulation unit 44 analyzes the composition of the raw material in the tank (S501). It is assumed that the composition of the raw material in the tank is known.

[0073] The simulation unit 44 estimates the amount of hydrogen produced according to the feedstock composition and the operating conditions (S502). The amount of hydrogen produced according to the feedstock composition and the operating conditions is estimated using a database, an estimation model generated by machine learning, or the like.

[0074] The simulation unit 44 calculates the amount of hydrogen produced by the existing process and the amount of CO extracted from the MCH. ２ The amount of free hydrogen is calculated (S503). The amount of hydrogen produced from the existing process and MCH depending on the raw material composition and operating conditions is estimated using a database or an estimation model generated by machine learning.

[0075] <Flow of hydrogen production, hydrogen extraction, and authentication> FIG. 9 shows the flow of the authentication system 30, CO ２ FIG. 2 is a flowchart illustrating the overall flow of processing performed by the emission evaluation device 10 and the factory system 40.

[0076] S1: First, the factory system 40 generates renewable energy (electricity generated by solar power, hydraulic power, wind power, etc.). The factory system 40 collects information necessary for calculating the renewable energy production location, production period, production volume, and emission coefficient, and stores it in the CO ２The information is transmitted to the emission assessment device 10. The information required for calculating the emission coefficient is the fuel and electricity consumed in producing the renewable energy.

[0077] S2: CO ２ The emission assessment device 10 calculates an emission coefficient (CO relative to a benchmark) using information necessary for calculating the emission coefficient (carbon intensity calculation). ２ The carbon intensity is calculated by the emission factor. ２ The emission assessment device 10 transmits the production location, production period, production amount, and carbon intensity of the renewable energy to the authentication system 30. ２ If it is not free hydrogen (not green hydrogen), CO emissions from upstream hydrogen production (thermal power plants, etc.) ２ Emissions may be counted towards carbon intensity.

[0078] S3: The authentication system 30 registers the renewable energy production location, production period, production amount, and carbon intensity in association with each other.

[0079] S4: The authentication system 30 authenticates the production location, production period, production amount, and carbon intensity of the renewable energy, and creates authentication information. The authentication information is made public. The authentication system 30 then publishes the authentication information to the CO ２ The data is transmitted to the emission evaluation device 10 .

[0080] S5:CO ２ The emission assessment device 10 registers authentication information related to the production of renewable energy.

[0081] S6: Next, the factory system 40 consumes renewable energy to produce hydrogen. The factory system 40 then calculates the CO ２ The information is transmitted to the emission assessment device 10. The information required for calculating the emission coefficient is the fuel and electricity consumed in producing hydrogen.

[0082] S7:CO ２ The emission assessment device 10 calculates an emission coefficient (CO relative to a benchmark) using information necessary for calculating the emission coefficient. ２ The emission factor corresponds to the carbon intensity. ２ The emission evaluation device 10 compares the emission coefficient with a threshold value to calculate CO２ We will also evaluate whether it can be considered free hydrogen. ２ The emission evaluation device 10 transmits the hydrogen identification information A, the process name (when hydrogen is produced), the carbon intensity, and the evaluation result to the authentication system 30 .

[0083] S8: The authentication system 30 registers the hydrogen identification information A, the process name (when hydrogen is produced), the carbon intensity, and the evaluation result.

[0084] S9: The certification system 30 certifies the hydrogen identification information A, the process name (when hydrogen is produced), the carbon intensity, and the evaluation results, and creates certification information. The certification information is made public. This certification information is sometimes called a clean hydrogen certificate. The certification system 30 then creates the certification information. ２ The data is transmitted to the emission evaluation device 10 .

[0085] S10:CO ２ The emission amount evaluation device 10 registers authentication information relating to the production of hydrogen.

[0086] S11: Next, the factory system 40 converts the hydrogen into a hydrogen carrier (MCH, liquid hydrogen, etc.). The factory system 40 converts the hydrogen carrier into a CO ２ The information required for calculating the emission coefficient is the amount of CO2 consumed in producing the fuel and electricity used in producing the hydrogen carrier. ２ Emissions and CO generated by their consumption ２ Emissions.

[0087] S12:CO ２ The carbon intensity calculation unit of the emission assessment device 10 calculates the emission coefficient (CO relative to the benchmark) using the information necessary for calculating the emission coefficient. ２ The carbon intensity is calculated by the emission factor. ２ The emission evaluation device 10 registers authentication information related to the production of the hydrogen carrier.

[0088] S13: The hydrogen carrier produced in the factory system 40 is transported to a business partner, etc. The factory system 40 stores the information necessary for calculating the hydrogen carrier production location (transport source and destination), production period, production volume, and emission coefficient in the CO ２The information required for calculating the emission coefficient is the amount of CO2 consumed in the production of fuel and electricity for transportation. ２ Emissions and CO generated by their consumption ２ is the amount of emissions.

[0089] S14:CO ２ The carbon intensity calculation unit of the emission assessment device 10 calculates the emission coefficient (CO relative to the benchmark) using the information necessary for calculating the emission coefficient. ２ The carbon intensity is calculated by the emission factor. ２ The emission evaluation device 10 registers authentication information related to the transportation of the hydrogen carrier.

[0090] S15: The factory system 40 extracts hydrogen from the hydrogen carrier. The factory system 40 collects information on the hydrogen extraction production location, production period, production amount, and information required for calculating the emission coefficient from the CO ２ The information required for calculating the emission coefficient is transmitted to the emission evaluation device 10. The information required for calculating the emission coefficient is the CO2 emissions during the production of fuel and electricity consumed to extract hydrogen. ２ Emissions and CO generated by their consumption ２ Emissions.

[0091] S16:CO ２ The emission assessment device 10 calculates an emission coefficient (CO relative to a benchmark) using information necessary for calculating the emission coefficient. ２ The emission factor corresponds to the carbon intensity. ２ The emission evaluation device 10 compares the emission coefficient with a threshold value to calculate CO ２ We will also evaluate whether it can be considered free hydrogen. ２ The emission evaluation device 10 transmits the hydrogen identification information B, the process name (when hydrogen is extracted), the carbon intensity, and the evaluation result to the authentication system 30 .

[0092] In step S16, CO ２ The emission evaluation device 10 measures CO ２ Emissions and CO during transportation ２ The certification of the amount of CO emissions may be requested individually from the certification system 30, or the amount of CO emissions may be calculated based on the amount of CO emissions during conversion to a hydrogen carrier, during transportation, and during extraction. ２The certification of the emissions may be requested collectively from the certification system 30 .

[0093] S17: The authentication system 30 registers the hydrogen identification information B, the process name (when hydrogen is extracted), the carbon intensity, and the evaluation result.

[0094] S18: The authentication system 30 authenticates the hydrogen identification information B, the process name (when hydrogen is extracted), the carbon intensity, and the evaluation results, and creates authentication information. The authentication information is made public. This authentication information is sometimes called a clean hydrogen certificate. The authentication system 30 then creates the authentication information. ２ The data is transmitted to the emission evaluation device 10 .

[0095] S19:CO ２ The emission amount evaluation device 10 registers authentication information relating to the time of hydrogen extraction.

[0096] In addition, in FIG. 9, CO generated in each phase of renewable energy production, hydrogen production, conversion to hydrogen carriers, transportation, and extraction is shown. ２ Emissions are certified. However, CO emissions up to that point are ２ Calculate the CO emissions from the previous phases ２ CO emissions ２ Emissions may be certified.

[0097] <Some Examples of Use of Calculation and Authentication of Carbon Intensity> FIG. 10 is a flowchart illustrating the flow of calculation and authentication of carbon intensity in the case where there is one hydrogen source.

[0098] The factory system 40 ２ Free hydrogen is produced and CO ２ The communication unit 41 of the factory system 40 calculates the amount of CO emissions by inputting the production location, production period, production amount, ２ CO emissions ２ For simplicity, the factory system 40 transmits the CO ２ The amount of emissions is calculated.

[0099] CO ２ The carbon intensity calculation unit 12 of the emission assessment device 10 calculates the CO ２CO2 emissions during manufacturing ２ The relative value of the amount of emissions is calculated as the carbon intensity (S102). For example, the carbon intensity calculation unit 12 calculates the relative value of the amount of CO ２ CO in step S101 relative to emissions ２ The carbon intensity is the ratio of the amount of emitted carbon dioxide to the amount of carbon dioxide emitted. The carbon intensity calculation unit 12 compares the carbon intensity with a threshold value to determine the evaluation result.

[0100] CO ２ The certification information acquisition unit 13 of the emission assessment device 10 receives, via the communication unit 11, the certification target (carbon intensity, CO ２ The authentication processing unit 32 of the authentication system 30 authenticates the authentication target and creates authentication information (S103). The communication unit 31 of the authentication system 30 sends the authentication information to the CO ２ The hydrogen carrier sales company receives the hydrogen carrier and manages it together with the authentication information. In this case, the hydrogen carrier sales company ２ The company that manages the emission evaluation device 10 or a related company.

[0101] FIG. 10 shows the authentication process when hydrogen is produced, but the authentication process when hydrogen is extracted may follow a similar flow.

[0102] FIG. 11 is a flowchart illustrating the flow of calculation and authentication of carbon intensity in the case where there are two hydrogen sources.

[0103] The factory system 40 generates by-product hydrogen and CO ２ Free hydrogen is produced, and a hydrogen carrier is also produced. ２ The communication unit 41 of the factory system 40 calculates the amount of CO emissions by using the information of each production location, production period, production amount, and CO ２ CO emissions ２ The data is transmitted to the emission evaluation device 10 .

[0104] CO ２ The carbon intensity calculation unit 12 of the emission assessment device 10 calculates the mixing ratio of hydrogen from different hydrogen sources and the CO ２CO in step S201 relative to emissions ２ The carbon intensity is calculated based on the relative value with respect to the emission amount (S202). The method for calculating this carbon intensity is shown in Equation (1). The carbon intensity calculation unit 12 compares the carbon intensity with a threshold value to determine the evaluation result.

[0105] CO ２ The certification information acquisition unit 13 of the emission assessment device 10 receives, via the communication unit 11, the certification target (carbon intensity, CO ２ The authentication processing unit 32 of the authentication system 30 authenticates the authentication target and creates authentication information (S203). The communication unit 31 of the authentication system 30 sends the authentication information to the CO ２ The information is transmitted to the emission evaluation device 10. The authentication information is acquired by the authentication information acquisition unit 13. The hydrogen sales company receives the hydrogen carrier and manages it together with the authentication information.

[0106] Figure 12 is a flowchart illustrating the flow of calculation and authentication of carbon intensity in the case of two hydrogen carriers. The explanation of Figure 12 mainly focuses on the differences from Figure 10. Steps S301 to S303 in Figure 12 may be the same as steps S201 to S203 in Figure 11.

[0107] The hydrogen sales company extracts the hydrogen and sells it to its business partners. In a situation where hydrogen carriers from multiple suppliers are mixed and used (see FIG. 6), when hydrogen is extracted, the CO reduction calculation unit 15 calculates the CO reduction amount based on the authentication information. ２ Calculate the CO emissions during hydrogen production for multiple hydrogen carriers. ２ The emissions are summed up (S304).

[0108] Therefore, the reduction amount calculation unit 15 calculates the carbon intensity included in the authentication information and the amount of CO extracted from the hydrogen carrier. ２ Free hydrogen amount (MCH, etc., CO ２ (a mixture of the same hydrogen carriers containing free hydrogen) into equation (3), and CO ２ If there are multiple hydrogen carriers, there are multiple pieces of authentication information, so the reduction amount calculation unit 15 calculates the CO emissions for each hydrogen carrier. ２Calculate the CO emissions of hydrogen as the benchmark in equation (3). ２ The emissions are known.

[0109] The communication unit 11 also detects the amount of CO ２ The CO reduction calculation unit 15 receives the CO reduction amount when extracting hydrogen from the factory system 40. ２ The CO emissions calculated in step S404 ２ Combined with CO emissions. ２ The authentication information acquisition unit 13 of the emission evaluation device 10 calculates the CO ２ The amount of emissions can be authenticated by the authentication system 30. Furthermore, the providing unit 14 can provide the authentication information to the business partner.

[0110] In this way, even if hydrogen is extracted from multiple hydrogen carriers, the CO ２ Emissions can be calculated.

[0111] Figure 13 is a flowchart illustrating the flow of calculation and authentication of carbon intensity in the case where hydrogen is extracted from a hydrogen carrier and produced by an existing process. The explanation of Figure 13 mainly focuses on the differences from Figure 10. Steps S401 to S403 in Figure 13 may be the same as steps S201 to S203 in Figure 11.

[0112] In a situation where hydrogen is produced not only from the MCH but also from existing processes (see FIG. 7), the simulation unit 44 estimates the amount of hydrogen extracted from the MCH and calculates the CO ２ The amount of hydrogen discharged is calculated (S404). When hydrogen is also produced from the existing process, the amount of hydrogen extracted from the MCH cannot be measured, so the simulation unit 44 estimates the amount of hydrogen extracted. The amount of hydrogen obtained by subtracting the amount of hydrogen calculated by the simulation unit 44 from the total amount of hydrogen extracted is the amount of hydrogen in the existing process.

[0113] The reduction amount calculation unit 15 calculates the carbon intensity included in the authentication information and the CO ２The amount of free hydrogen was substituted into equation (3), and the CO ２ Calculate emissions.

[0114] Next, the carbon intensity calculation unit 12 calculates the CO ２ Emissions and CO in step S404 ２ Based on the amount of CO2 emitted, the carbon intensity of the total amount of hydrogen is calculated (S405). ２ The communication unit 11 acquires the amount of hydrogen discharged from the factory system 40. The communication unit 11 also acquires the amount of hydrogen discharged from the MCH (calculated by simulation) and the amount of CO discharged when hydrogen is discharged. ２ The CO emissions from the hydrogen production process contained in the MCH are also obtained from the factory system 40. ２ CO emissions when extracting hydrogen from MCH ２ This is to add up the emissions. The carbon intensity calculation unit 12 can calculate the carbon intensity using formula (2).

[0115] Also, CO ２ The certification information acquisition unit 13 of the emission assessment device 10 acquires the certification target (carbon intensity, CO ２ The evaluation result of whether the hydrogen can be called free, the hydrogen identification information B, and the process name are transmitted to the authentication system 30, and authentication information for the hydrogen extraction is obtained. The providing unit 14 can also provide the authentication information to the business partner.

[0116] In addition, if there are multiple destinations for hydrogen, only hydrogen destined for a specific destination out of the total amount of hydrogen will be CO ２ It can be evaluated as free hydrogen or CO relative to the total amount of hydrogen ２ The ratio of free hydrogen to CO ２ It may be considered to be free hydrogen.

[0117] <CO at refineries ２ Refinery operation when supplying free hydrogen (MCH) > Only hydrogen in a steady state is CO ２ With free hydrogen, for example, only 9.5 tons of 10 tons are used in a steady state, resulting in 0.5 tons of waste. This waste during the transition from the steady state to the supply state poses an issue.

[0118] 14A and 14B are diagrams showing the relationship between time and the amount of extracted hydrogen. FIG. 14A shows a case where hydrogen extracted from the MCH is increased in addition to hydrogen produced from existing raw materials. t1: After the start of increased hydrogen production, hydrogen extraction from the MCH is stopped. t2: CO2 is removed until hydrogen returns to the normal amount. ２ Free hydrogen is produced (supplied to other companies) and CO is measured by a flow meter. ２ Figure 14B shows a case where the production rate of hydrogen produced from existing raw materials is slowed down to create room (free space) for hydrogen extracted from the MCH. t1: Start extracting hydrogen from the MCH and wait for the pre-measured time lag to elapse. t2: CO2 from the start of feed + time lag time to the stop of feed + time lag time. ２ Free hydrogen is produced (supplied to other companies). In Figure 14B, CO ２ The amount of free hydrogen is calculated. ２ The emission evaluation device 10 can supply hydrogen corresponding to the carbon intensity calculated as described above to other companies.

[0119] <Major Effects> In this embodiment, the carbon intensity is associated with the hydrogen being traded and has been certified, so that fair trading that reflects the value according to the carbon intensity can be realized even for hydrogen produced overseas or in remote locations.

[0120] This application claims priority based on Japanese Patent Application No. 2023-106802, filed with the Japan Patent Office on June 29, 2023, the entire contents of which are incorporated herein by reference.

[0121] 10 CO ２ Emission evaluation device 30 Certification system 40 Factory system 100 CO ２ Emissions Assessment System

Claims

1. A CO that communicates with the hydrogen production factory system and certification system via a network ２ An eq emission evaluation device, ２ A communication unit that receives hydrogen identification information of the discharged hydrogen and the produced hydrogen, and ２ A request is made to the authentication system for authentication of the amount of CO emission associated with the hydrogen identification information. ２ A certification information acquisition unit that acquires certification information of a CO emission amount; ２ eq emission evaluation device.

2. The communication unit detects the amount of CO ２ The hydrogen identification information of the discharged hydrogen and the extracted hydrogen is received from the factory system, and the authentication information acquisition unit detects the amount of CO ２ The certification system is requested to certify the emission amount and the hydrogen specific information, and the CO ２ The CO2 emission control method according to claim 1, further comprising: a providing unit that obtains the emission amount and authentication information of the hydrogen identification information and provides the authentication information to a trading partner of the extracted hydrogen. ２ eq emission evaluation device.

3. The communication unit receives CO2 during hydrogen production from a plurality of the factory systems. ２ receiving hydrogen specific information of emissions and produced hydrogen from a plurality of said factory systems; ２ Based on the amount of CO emitted during hydrogen production by the multiple factory systems and the amount of hydrogen included in the hydrogen identification information, ２ The CO2 emission control system according to claim 2, further comprising a carbon intensity calculation unit that calculates a carbon intensity that can calculate a carbon emission amount, the authentication information acquisition unit requests the authentication system to authenticate the carbon intensity and the hydrogen specific information, and acquires authentication information of the carbon intensity and the hydrogen specific information, and the provision unit provides the authentication information to a business partner of the hydrogen carrier that contains the produced hydrogen. ２ eq emission evaluation device.

4. The communication unit receives, from a plurality of the factory systems, CO ２ receiving hydrogen specific information of the discharged hydrogen and the extracted hydrogen from the plurality of the factory systems; ２ Based on the amount of CO emitted when the hydrogen is extracted from the multiple factory systems, and the amount of hydrogen included in the hydrogen identification information, ２ The CO2 emission control system according to claim 2 or 3, further comprising a carbon intensity calculation unit that calculates a carbon intensity from which an amount of emission can be calculated, wherein the authentication information acquisition unit requests the authentication system to authenticate the carbon intensity and the hydrogen identification information and acquires authentication information of the carbon intensity and the hydrogen identification information, and the provision unit provides the authentication information to a trading partner of the extracted hydrogen. ２ eq emission evaluation device.

5. The method according to claim 3, wherein the authentication information acquisition unit requests the authentication system to authenticate an evaluation result of comparing the carbon intensity with a threshold in addition to the carbon intensity and the hydrogen identification information, and acquires authentication information of the carbon intensity, the hydrogen identification information, and the evaluation result, and the provision unit provides the authentication information to a business partner of the extracted hydrogen. ２ eq emission evaluation device.

6. The carbon intensity calculation unit calculates the carbon intensity included in the authentication information and the CO extracted from the hydrogen carrier obtained from the factory system. ２ Based on the amount of free hydrogen, CO ２ 5. The method according to claim 4, wherein the CO emission is calculated. ２ eq emission evaluation device.

7. When the factory system extracts hydrogen from the hydrogen carrier and produces hydrogen by an existing process, the carbon intensity calculation unit calculates the carbon intensity included in the authentication information and the CO extracted from the hydrogen carrier calculated by the simulation unit. ２ Based on the amount of free hydrogen, CO ２ 5. The method according to claim 3, wherein the CO emission is calculated. ２ eq emission evaluation device.

8. The communication unit receives from the factory system the amount of hydrogen extracted from the hydrogen carrier and the CO ２ Emissions, and the amount of hydrogen and CO extracted by the existing process ２ The carbon intensity calculation unit receives a CO ２ CO emissions during removal ２ The amount of hydrogen extracted from the hydrogen carrier, and the amount of hydrogen extracted by the existing process and CO ２ Based on the emissions, the CO emitted during hydrogen extraction ２ The CO2 emission control method according to claim 7, wherein the carbon intensity is calculated based on the amount of hydrogen emitted, the certification information acquisition unit requests the certification system to certify the carbon intensity and hydrogen identification information of the total amount of hydrogen extracted, and acquires certification information of the carbon intensity and the hydrogen identification information, and the provision unit provides the certification information to a business partner of the extracted hydrogen. ２ eq emission evaluation device.

9. CO emitted when generating electricity using hydrogen extracted from a hydrogen carrier ２ CO emissions from power generation ２ Calculated based on the amount of free hydrogen, the certified carbon intensity, and the amount of electricity generated. Total electricity generation, CO ２ CO before the introduction of free hydrogen ２ Emissions and CO after introduction ２ CO based on emissions ２ 4. The CO2 analyzer according to claim 3, further comprising an electricity generation calculation unit for calculating an amount of electricity generated by free hydrogen. ２ eq emission evaluation device.

10. CO emissions reduced during hydrogen production or extraction ２ Emissions are compared to the CO emissions when generating electricity using benchmark hydrogen. ２ Calculated based on the emissions and the certified carbon intensity, and ２ Emissions, CO ２ The CO according to claim 3, further comprising an incentive calculation unit for converting the price into a monetary amount. ２ eq emission evaluation device.

11. The communication unit is configured to receive a signal from the CO2 sensor during the production of fuel or electricity consumed in the production of the hydrogen carrier. ２ Emissions and CO generated by their consumption ２ 4. The method according to claim 3, wherein information necessary for calculating a carbon intensity, including a carbon emission amount, is received from the factory system, and the carbon intensity calculation unit calculates the carbon intensity in the production of the hydrogen carrier using the information necessary for calculating the carbon intensity. ２ eq emission evaluation device.

12. The communication unit is configured to receive a signal from the hydrogen carrier when the fuel or electricity is produced. ２ Emissions and CO generated by their consumption ２ 4. The method according to claim 3, wherein information necessary for calculating carbon intensity, including a carbon emission amount, is received from the factory system, and the carbon intensity calculation unit calculates the carbon intensity in the transportation of the hydrogen carrier using the information necessary for calculating the carbon intensity. ２ eq emission evaluation device.

13. Factory system and certification system for hydrogen production and CO ２ The CO emission evaluation device communicates via a network. ２ An eq emission evaluation system, ２ The hydrogen specific information of the emissions and the produced hydrogen is ２ eq emission evaluation device, ２ The eq emission evaluation device is a CO ２ A communication unit that receives hydrogen identification information of the discharged hydrogen and the produced hydrogen, and ２ A request is made to the authentication system for authentication of the amount of CO emission associated with the hydrogen identification information. ２ A certification information acquisition unit that acquires certification information of a CO emission amount; ２ eq emissions rating system.

14. A CO that communicates with the factory system and certification system related to hydrogen production via a network ２ CO emission evaluation device ２ A method for evaluating CO eq emissions during production of hydrogen from the factory system, ２ receiving hydrogen identification information of the discharged hydrogen and the produced hydrogen; ２ A request is made to the authentication system for authentication of the amount of CO emission associated with the hydrogen identification information. ２ A process for obtaining certification information of the emission amount; ２ eq emissions evaluation method.

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