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EP-4738234-A1 - CO2EQ EMISSION EVALUATION DEVICE, CO2EQ EMISSION EVALUATION SYSTEM, AND CO2EQ EMISSION EVALUATION METHOD

EP4738234A1EP 4738234 A1EP4738234 A1EP 4738234A1EP-4738234-A1

Abstract

To evaluate CO 2 emissions at the time hydrogen is traded. The present disclosures relates to a CO 2 eq emission evaluation device that communicates with a factory system and a certification system related to hydrogen production via a network, and the CO 2 eq emission evaluation device includes: a communication section configured to receive, from the factory system, CO 2 emissions generated during production of hydrogen and hydrogen identification information about the produced hydrogen; and a certification information acquirer configured to request the certification system to certify the CO 2 emissions associated with the hydrogen identification information and acquire certification information about the CO 2 emissions associated with the hydrogen identification information.

Inventors

  • MINODA, Ai
  • INOUE, JUN
  • NEGISHI, YOSHINORI
  • MAEDA, SEIJI
  • MACHII, KENJI
  • SEIKE, TADASHI

Assignees

  • ENEOS CORPORATION

Dates

Publication Date
20260506
Application Date
20240618

Claims (14)

  1. A CO 2 eq emission evaluation device that communicates with a factory system and a certification system related to hydrogen production via a network, the CO 2 eq emission evaluation device comprising: a communication section configured to receive, from the factory system, CO 2 emissions generated during production of hydrogen and hydrogen identification information about the produced hydrogen; and a certification information acquirer configured to request the certification system to certify the CO 2 emissions associated with the hydrogen identification information and acquire certification information about the CO 2 emissions associated with the hydrogen identification information.
  2. The CO 2 eq emission evaluation device according to claim 1, wherein the communication section is configured to receive, from the factory system, CO 2 emissions generated during extraction of hydrogen from a hydrogen carrier and hydrogen identification information about the extracted hydrogen, the certification information acquirer is configured to request the certification system to certify the CO 2 emissions generated during the extraction of the hydrogen and the hydrogen identification information, and acquire certification information of the CO 2 emissions generated during the extraction of the hydrogen and the hydrogen identification information, and the CO 2 eq emission evaluation device further comprises a provider configured to provide the certification information to a trading partner of the extracted hydrogen.
  3. The CO 2 eq emission evaluation device according to claim 2, wherein the communication section is configured to receive, from a plurality of factory systems, CO 2 emissions generated during production of hydrogen and hydrogen identification information about the produced hydrogen, the plurality of factory systems being the factory system, the CO 2 eq emission evaluation device further comprises a carbon intensity calculator configured to calculate a carbon intensity based on the CO 2 emissions and an amount of the produced hydrogen included in the hydrogen identification information received from the plurality of factory systems, the carbon intensity being used to calculate the CO 2 emissions generated by the plurality of factory systems during the production of the hydrogen, the certification information acquirer is configured to request the certification system to certify the carbon intensity and the hydrogen identification information, and acquire the certification information of the carbon intensity and the hydrogen identification information, and the provider is configured to provide the certification information to a trading partner of a hydrogen carrier containing the produced hydrogen.
  4. The CO 2 eq emission evaluation device according to claim 2 or 3, wherein the communication section is configured to receive, from the plurality of factory systems, CO 2 emissions generated during extraction of hydrogen from a hydrogen carrier and the hydrogen identification information about the extracted hydrogen, the CO 2 eq emission evaluation device further comprises a carbon intensity calculator configured to calculate a carbon intensity based on the CO 2 emissions and an amount of the hydrogen included in the hydrogen identification information received from the plurality of factory systems, the carbon intensity being used to calculate the CO 2 emissions generated by the plurality of factory systems during the extraction of the hydrogen, the certification information acquirer is configured to request the certification system to certify the carbon intensity and the hydrogen identification information, and acquire the certification information of the carbon intensity and the hydrogen identification information, and the provider is configured to provide the certification information to a trading partner of the extracted hydrogen.
  5. The CO 2 eq emission evaluation device according to claim 3, wherein the certification information acquirer is configured to request the certification system to certify, in addition to the carbon intensity and the hydrogen identification information, an evaluation result obtained by comparing the carbon intensity with a threshold value, and acquire the certification information of the carbon intensity, the hydrogen identification information, and the evaluation result, and the provider is configured to provide the certification information to a trading partner of the extracted hydrogen.
  6. The CO 2 eq emission evaluation device according to claim 4, wherein the carbon intensity calculator is configured to calculate CO 2 emissions generated at a time the extracted hydrogen is produced, based on the carbon intensity included in the certification information and an amount of CO 2 -free hydrogen extracted from the hydrogen carrier, the amount of the CO 2 -free hydrogen being obtained from the factory system.
  7. The CO 2 eq emission evaluation device according to claim 3, wherein in a case where the factory system extracts hydrogen from the hydrogen carrier and produces hydrogen by an existing process, the carbon intensity calculator calculates CO 2 emissions generated during production of the extracted hydrogen, based on the carbon intensity included in the certification information and an amount of CO 2 -free hydrogen extracted from the hydrogen carrier, the amount of the CO 2 -free hydrogen being calculated by a simulator.
  8. The CO 2 eq emission evaluation device according to claim 7, wherein the communication section is configured to receive, from the factory system, an amount of the hydrogen extracted from the hydrogen carrier and CO 2 emissions generated during the extraction of the hydrogen, and an amount of the hydrogen produced by the existing process and CO 2 emissions generated during the production of the hydrogen by the existing process, the carbon intensity calculator is configured to calculate the carbon intensity related to the CO 2 emissions generated during the extraction of the hydrogen, based on the CO 2 emissions generated during the extraction of the hydrogen, the amount of hydrogen extracted from the hydrogen carrier, and the amount and the CO 2 emissions of hydrogen extracted by the existing process, the certification information acquirer is configured to request the certification system to certify the carbon intensity and the hydrogen identification information about a total amount of the extracted hydrogen, and acquire the certification information of the carbon intensity and the hydrogen identification information, and the provider is configured to provide the certification information to a trading partner of the hydrogen extracted.
  9. The CO 2 eq emission evaluation device according to claim 3, further comprising a generated electricity amount calculator configured to calculate CO 2 emissions generated during generation of electricity using the hydrogen extracted from the hydrogen carrier, based on an amount of CO 2 -free hydrogen used for the generation of the electricity, the certified carbon intensity, and an amount of the electricity generated; and calculate an amount of electricity generated using the CO 2 -free hydrogen, based on a total amount of the electricity generated, CO 2 emissions before introduction of the CO 2 -free hydrogen, and CO 2 emissions after introduction of the CO 2 -free hydrogen.
  10. The CO 2 eq emission evaluation device according to claim 3, further comprising an incentive calculator configured to calculate an amount of CO 2 emissions reduction achieved during the production or extraction of the hydrogen, based on the CO 2 emissions when electricity is generated using the hydrogen as a benchmark and the certified carbon intensity; and convert the amount of CO 2 emissions reduction into a monetary amount based on a price of CO 2 .
  11. The CO 2 eq emission evaluation device according to claim 3, wherein the communication section is configured to receive information necessary for carbon intensity calculation from the factory system, the information including CO 2 emissions generated during production of fuel or electricity used for production of a hydrogen carrier and CO 2 emissions generated by the consumption of the fuel and the electricity, and the carbon intensity calculator is configured to calculate the carbon intensity in the production of the hydrogen carrier using the information necessary for carbon intensity calculation.
  12. The CO 2 eq emission evaluation device according to claim 3, wherein the communication section is configured to receive information necessary for carbon intensity calculation from the factory system, the information including CO 2 emissions generated during production of fuel or electricity used for transportation of a hydrogen carrier and CO 2 emissions generated by consumption of the fuel or the electricity, and the carbon intensity calculator is configured to calculate the carbon intensity in the transportation of the hydrogen carrier using the information necessary for carbon intensity calculation.
  13. A CO 2 eq emission evaluation system in which a factory system and a certification system related to hydrogen production and a CO 2 eq emission evaluation device communicate via a network, wherein the factory system is configured to transmit to the CO 2 eq emission evaluation device CO 2 emissions generated during production of hydrogen and hydrogen identification information about the produced hydrogen, the CO 2 eq emission evaluation device comprises: a communication section configured to receive, from the factory system, the CO 2 emissions generated during the production of the hydrogen and hydrogen identification information about the produced hydrogen; a communication section configured to receive, from the factory system the CO 2 emissions generated during the production of the hydrogen and the hydrogen identification information about the produced hydrogen; and a certification information acquirer configured to request the certification system to certify the CO 2 emissions associated with the hydrogen identification information, and acquire certification information of the CO 2 emissions associated with the hydrogen identification information.
  14. A CO 2 eq emission evaluation method performed by a CO 2 eq emission evaluation device that communicates with a factory system and a certification system related to hydrogen production via a network, the CO 2 eq emission evaluation method comprising: receiving, from the factory system, CO 2 emissions generated during production of hydrogen and hydrogen identification information about the produced hydrogen; and requesting the certification system to certify the CO 2 emissions associated with the hydrogen identification information and acquiring certification information of the CO 2 emissions associated with the hydrogen identification information.

Description

TECHNICAL FIELD The present disclosure relates to a CO2eq emission evaluation device, a CO2eq emission evaluation system, and a CO2eq emission evaluation method. BACKGROUND ART Hydrogen, which emits no CO2 when combusted, is expected to be an energy that contributes to suppression of global warming. Although hydrogens can be produced from various resources, a small amount of CO2 may be emitted during the production process or when hydrogen is extracted from a hydrogen carrier. Technologies devised for external charging using renewable energy are known (for example, see Patent Document 1). Patent Document 1 discloses a server configured to issue, upon CO2-free charging of a vehicle, a coupon usable at a store located near the power supply facility to the user of the vehicle. RELATED ART DOCUMENTS PATENT DOCUMENT Patent Document 1: Japanese Unexamined Patent Application Publication No. 2020-102024 SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION However, there has been a problem that an amount of CO2eq emitted is not evaluated at the time hydrogen is traded. In view of the above problem, the present disclosure provides a technology capable of evaluating CO2eq emissions at the time hydrogen is traded. MEANS FOR SOLVING THE PROBLEM The present disclosure provides a CO2eq emission evaluation device that communicates with a factory system and a certification system related to hydrogen production via a network. The CO2eq emission evaluation device includes a communication section configured to receive, from the factory system, CO2 emissions generated during production of hydrogen and hydrogen identification information about the produced hydrogen; and a certification information acquirer configured to request the certification system to certify the CO2 emissions associated with the hydrogen identification information and acquire certification information about the CO2 emissions associated with the hydrogen identification information. EFFECTS OF THE INVENTION The present disclosure can provide a technology for evaluating CO2eq emissions at the time hydrogen is traded. BRIEF DESCRIPTION OF THE DRAWINGS [FIG. 1] FIG. 1 is a schematic diagram illustrating a flow of production of a hydrogen carrier and extraction of hydrogen from the hydrogen carrier.[FIG. 2] FIG. 2 is a diagram illustrating a system configuration example of a CO2 emission evaluation system.[FIG. 3] FIG. 3 is a diagram illustrating hardware configuration examples of a CO2 emission evaluation device, a certification system, and a factory system.[FIG. 4] FIG. 4 is a diagram illustrating a functional configuration example of a CO2 emission evaluation system.[FIG. 5] FIG. 5 is a diagram explaining a certification method using an electronic signature.[FIG. 6] FIG. 6 is a diagram explaining phases of certification for a hydrogen source, a hydrogen carrier, and extraction of hydrogen.[FIG. 7] FIG. 7 is a diagram explaining a case where hydrogen extracted from a hydrogen carrier is blended with hydrogen produced from other raw materials.[FIG. 8] FIG. 8 is an exemplary flowchart illustrating a flow in which a simulator estimates an amount of hydrogen extracted.[FIG. 9] FIG. 9 is an exemplary flowchart illustrating an overall flow of processing performed by a certification system, a CO2 emission evaluation device, and a factory system.[FIG. 10] FIG. 10 is an exemplary flowchart illustrating a flow of carbon intensity calculation and certification in the case where there is one hydrogen source.[FIG. 11] FIG. 11 is an exemplary flowchart illustrating a flow of carbon intensity calculation and certification in the case where there are two hydrogen sources.[FIG. 12] FIG. 12 is an exemplary flowchart illustrating a flow of carbon intensity calculation and certification in the case where there are two hydrogen carriers.[FIG. 13] FIG. 13 is an exemplary flowchart illustrating a flow of carbon intensity calculation and certification in the case where hydrogen is extracted from a hydrogen carrier and hydrogen is produced by an existing process.[FIG. 14A] FIG. 14A is a diagram explaining a case where production of hydrogen extracted from methylcyclohexane (MCH) is increased in addition to hydrogen produced from conventional raw materials.[FIG. 14B] FIG. 14B is a diagram explaining a case where a production rate of hydrogen produced from conventional raw materials is reduced to make room for hydrogen extracted from MCH. DESCRIPTION OF EMBODIMENTS Hereinafter, as an example of the embodiment of the present invention, a CO2 emission evaluation system and a CO2 emission evaluation method performed by the CO2 emission evaluation system will be described with reference to the drawings. <Outline of CO2 Emission Evaluation System> Hydrogen emits CO2 corresponding to each process of production of renewable energy, production of a low-carbon hydrogen, production of hydrogen using renewable energy, production of a hydrogen carrier, and extraction of hydrogen from a hy