Identification system and identification method

Abstract

An identification system according to one aspect of the present disclosure comprises: a converter that uses a feedstock material containing carbon to produce a product containing carbon; and a comparison device that compares a first measurement result, which is the measurement result of the isotope ratio of carbon contained in the feedstock material, with a second measurement result, which is the measurement result of the isotope ratio of carbon contained in the product.

Description

Identification system and method

[0001] The present disclosure relates to an identification system and an identification method.

[0002] Carbon atoms that exist in nature exist as three isotopes of carbon-12 ( １２ C), carbon-13 ( １３ C), and carbon-14 ( １４ It is known that carbon isotopes are contained in the sample. Patent Document 1 discloses a technique for measuring the amount of carbon isotopes contained in a sample and identifying the source of the isotopes. Patent Document 2 discloses the following: １２ C and １３ A technique for synthesizing diamond from carbon containing a C isotope has been disclosed.

[0003] Non-patent documents 1 to 3 describe carbon isotopes １４ Non-Patent Document 1 discloses a technique for evaluating biomass-derived carbon using the concentration of C. １４ Non-Patent Document 2 discloses a technique for determining the proportion of carbon ( １４ Non-patent document 3 discloses a technique for measuring the biomass content of a product by measuring the carbon content of the product by accelerator mass spectrometry. １４ A technique for evaluating the degree of biomass origin using C concentration measurement is described.

[0004] JP 2014-211451 A U.S. Pat. No. 1,1760,643

[0005] "Biomass Degree Measurement," [online] Retrieved June 10, 2024, Internet <URL: https: / / iaa-ams.co.jp / biomass-degree / >; "How do you measure 'biomass degree'?", [online] Retrieved June 10, 2024, Internet <URL: https: / / www.jora.jp / faq / 7074 / >; "Assessing the Biomass Degree of Biomass Plastics by Measuring Carbon-14 Using AMS," Funabashi Masahiro, Kunioka Masao, [online] Retrieved June 10, 2024, Internet <URL: https: / / www.netsu.org / JSCTANetsuSokutei / pdfs / 39 / 39-4-143.pdf>

[0006] Carbon dioxide in the air or carbon dioxide generated at power plants, etc. (CO ２ Efforts are being made to manufacture products using CO ２ The amount of electricity or fuel consumed during the collection and manufacturing processes is measured, and CO ２ By deriving the CO emissions, ２ Free of CO2 during manufacturing ２ However, it was not possible to prove that a product was made from a specific raw material.

[0007] This disclosure describes techniques to ensure that a particular product is made from a particular raw material.

[0008] An identification system according to one aspect of the present disclosure includes a converter that uses a raw material containing carbon to produce a product containing carbon, and a comparison device that compares a first measurement result, which is a measurement result of the isotope ratio of carbon contained in the raw material, with a second measurement result, which is a measurement result of the isotope ratio of carbon contained in the product.

[0009] According to the present disclosure, it is possible to provide a technology that can guarantee that a specific product is produced from specific raw materials.

[0010] Fig. 1 is a diagram illustrating an example of the configuration of an identification system, and Fig. 2 is a flowchart illustrating an example of the operation of the identification system.

[0011] An identification system according to one aspect of the present disclosure includes a converter that uses a raw material containing carbon to produce a product containing carbon, and a comparison device that compares a first measurement result, which is a measurement result of the isotope ratio of carbon contained in the raw material, with a second measurement result, which is a measurement result of the isotope ratio of carbon contained in the product.

[0012] An identification method according to one aspect of the present disclosure is performed by an identification system including a converter and a verification device. The identification method includes the steps of: producing a carbon-containing product using a carbon-containing raw material by the converter; and verifying, by the verification device, a first measurement result that is a measurement result of the isotope ratio of carbon contained in the raw material with a second measurement result that is a measurement result of the carbon isotope ratio of the product.

[0013] In an identification system and an identification method according to one aspect of the present disclosure, a first measurement result of the carbon isotope ratio contained in a raw material is compared with a second measurement result of the carbon isotope ratio contained in a product produced from the raw material. The carbon isotope ratios contained in the raw material and the carbon isotope ratios contained in the product do not change during the production process. Therefore, if the results of the comparison between the first measurement result and the second measurement result match, it is possible to guarantee (or prove) that a specific product was produced from a specific raw material.

[0014] The collation device is １２ C. １３ C and １４ The ratio of C and the second measurement result １２ C. １３ C and １４ The matching may be performed using the ratio of C and １２ C. １３ C and １４ The proportion of C varies depending on the carbon source (e.g., air, biomass, or fossil sources). １２ C. １３ C and １４ By performing matching using each proportion of C, the accuracy of matching is improved.

[0015] The collation device is １２ C. １３C and １４ The ratio of C and the second measurement result １２ C. １３ C and １４ The comparison may be performed based on whether the difference between the ratio of C and the ratio of the other is equal to or less than a predetermined threshold. １２ C. １３ C and １４ By performing matching using the difference in the proportions of C and a predetermined threshold, the accuracy of matching is improved.

[0016] The verification device may store the location information where the raw material was acquired in association with the first measurement result, and further verify the location information where the raw material was acquired. If the verification result between the first measurement result and the second measurement result matches, it can be guaranteed that the raw material was acquired from specific location information (e.g., latitude and longitude, an area such as a continent, a country, or a city, or a facility such as a power plant). Furthermore, consumers (potential purchasers) of the product can select products based on their desire to contribute to reducing carbon emissions from the specific location information.

[0017] The verification device may store the time information of the acquisition of the raw material in association with the first measurement result, and further verify the time information of the acquisition of the raw material. If the verification result of the first measurement result and the second measurement result matches, it can be guaranteed that the raw material was acquired at a specific time information. Furthermore, a consumer (potential purchaser) of the product can select a product based on whether it corresponds to specific time information (e.g., date of birth or year of birth).

[0018] The raw material is CO obtained from the air. ２ or CO obtained from gas obtained by burning biomass fuel. ２ If the first measurement result and the second measurement result are matched, the raw material CO ２ It can be guaranteed that the CO2 is obtained based on the combustion of air or biomass fuels, i.e. the product is obtained based on the captured CO2 ２ It can be proven that the product was manufactured using only CO. ２ Products can be selected based on factors such as wanting to contribute to reducing waste.

[0019] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicated description will be omitted.

[0020] 1 is a diagram schematically illustrating an example of the configuration of an identification system 1 according to an embodiment. The identification system 1 includes a supplying device 2, an acquiring device 3, a converter 4, a first measuring instrument 5, a second measuring instrument 6, and a matching device 7. In the identification system 1, the installation location of each device is not limited.

[0021] The supply device 2 is a device that supplies a carbon-free raw material (first raw material) to the converter 4. The configuration of the supply device 2 is not limited. For example, the supply device 2 may include a water electrolysis device that produces hydrogen by electrolysis of water and a storage device that stores the produced hydrogen. In this case, the supply device 2 generates hydrogen as the first raw material from water and supplies the hydrogen to the converter 4. The water electrolysis device may perform water electrolysis using power supplied from a solar power generation facility, a wind power generation facility, or the like.

[0022] The acquisition device 3 is a device that supplies a carbon-containing raw material (second raw material) to the converter 4. The configuration of the acquisition device 3 is not limited. For example, the acquisition device 3 may be a DAC (Direct Air Capture). In this case, the acquisition device 3 extracts CO 2 , which is the second raw material, from the air in a predetermined area where the acquisition device 3 is installed. ２ and converts it into CO ２ The acquisition device 3 extracts CO from gas obtained by burning biomass fuel (including biogas). ２ and converts it into CO ２ The second raw material may be CO ２ For example, the second raw material may be methane or the like.

[0023] The converter 4 produces a product containing carbon using the first feedstock and the second feedstock. The converter 4 may produce a product from only the second feedstock. In this case, the supply device 2 may be omitted. The supply paths of the first feedstock and the second feedstock are not limited. For example, at least one of the first feedstock and the second feedstock does not have to be supplied directly to the converter 4. In one example, at least one of the first feedstock and the second feedstock may be transported in a state filled in a bottle, a tank, or the like, and then supplied to the converter 4.

[0024] The product is a second feedstock (e.g., CO ２ The scope of the present invention may include all products that can be produced from carbon dioxide. Examples of products include, but are not limited to, methane, carbon monoxide, olefins, sustainable aviation fuel (SAF), graphite, carbon black, and diamonds. Products are not limited to primary products, but may also be secondary products that have been further processed. For example, products may be pharmaceuticals, plastics, etc.

[0025] The first measuring instrument 5 measures (first measurement) the isotope ratio of carbon contained in the second raw material acquired by the acquisition device 3. For example, the first measuring instrument 5 is a mass spectrometer that performs batch analysis or in-line analysis. １２ C. １３ C and １４ The first measuring instrument 5 measures the proportion of C. The first measuring instrument 5 outputs the carbon isotope ratio obtained by the first measurement to the collation device 7.

[0026] The second measuring instrument 6 measures (second measurement) the isotope ratio of carbon contained in the product produced by the converter 4. For example, the second measuring instrument 6 is a mass spectrometer that performs batch analysis or in-line analysis. １２ C. １３ C and １４ The second measuring instrument 6 measures the proportion of C. The second measuring instrument 6 outputs the carbon isotope ratio obtained by the second measurement to the collation device 7.

[0027] The collation device 7 is a device that collates the carbon isotope ratio obtained by the first measurement with the carbon isotope ratio obtained by the second measurement. That is, the collation device 7 collates the carbon isotope ratio contained in the raw material with the carbon isotope ratio contained in the product. For example, the collation device 7 is a computer configured with hardware such as a CPU (Central Processing Unit), ROM (Read Only Memory), and RAM (Random Access Memory), and software such as a program stored in the ROM.

[0028] The verification device 7 verifies whether the carbon contained in the product is the carbon contained in the second raw material. If the verification results are consistent, the verification device 7 guarantees that the carbon contained in the product and the carbon contained in the second raw material are the same. In other words, the verification device 7 certifies that the product was produced from the second raw material. Furthermore, if it is certified that the product was produced from the second raw material, it is indirectly certified that the raw material of the product that is secondarily converted using the product as a raw material is also the second raw material.

[0029] The carbon isotope ratio contained in the product does not change during the manufacturing process such as refining or chemical conversion. That is, the carbon isotope ratio contained in the product inherits the carbon isotope ratio of the second raw material. １２ C and １３ C is a stable isotope, １４ C is a radioactive isotope. When carbon comes from fossil resources, it takes a long time to １４ As the decay of C progresses, １４ The concentration of C becomes very low, １２ C and １３ The concentration of carbon becomes relatively high. If carbon comes from the air, it is absorbed by cosmic rays. １４ Since C is generated, １４ The concentration of C increases.

[0030] For example, depending on whether the carbon comes from air, biomass, or fossil resources (oil, etc.), １２ C. １３ C and １４ The proportion of C varies as follows: Air:１２ C "small", １３ C "many", １４ C "More" Biomass: １２ C "Medium", １３ C "small", １４ C "Many" Fossil resources: １２ C "many", １３ C "small", １４ C “Nothing”

[0031] in the air １４ The concentration of C can vary depending on various factors. １４ The concentration of radioactive carbon varies. For example, there can be a difference of about 1% between the equator and the poles. Another example is the change in the strength of the Earth's magnetic field. When the Earth's magnetic field weakens, the amount of cosmic rays entering the atmosphere increases. As the amount of cosmic rays increases, the amount of radioactive carbon increases. １４ The production of C increases, １４ For example, the strength of the Earth's magnetic field has decreased by 60% over the past 2000 years, １４ In another example, the concentration of C has increased by about 2% due to fluctuations in solar activity, with an 11-year cycle. １４ In another example, the concentration of CO in seawater fluctuates by about 0.2% as sea levels rise and fall due to global warming. ２ Another example is the amount of CO absorbed underground due to volcanic activity. ２ By the eruption of １４ As another example, the concentration of CO from the combustion of fossil fuels decreases. ２ With the release of １４ The concentration of C decreases (Suess effect). Another example is the large amount of neutrons released during atomic and hydrogen bomb tests. １４ The C concentration increases.

[0032] 2 is a flowchart showing an example of the operation of the identification system 1. In FIG. 2, flow M shows an example of the operation method (identification method) of the identification system 1.

[0033] In step S1, the supply device 2 supplies a carbon-free first feedstock to the converter 4. In one example, the supply device 2 may generate hydrogen, which serves as the first feedstock, from water and supply the hydrogen to the converter 4. Step S1 can be rephrased as a step of preparing the first feedstock.

[0034] In step S2, the capture device 3 supplies a second raw material containing carbon to the converter 4. In one example, the capture device 3 extracts CO 2 , which is the second raw material, from the air in a predetermined area where the capture device 3 is installed. ２ and converts it into CO ２ In another example, the capture device 3 may extract CO from gas obtained by burning biomass fuel. ２ and converts it into CO ２ Step S2 can be rephrased as a step of preparing the second raw material.

[0035] In step S3, the first measuring instrument 5 measures the isotope ratio of carbon contained in the second raw material (first measurement). １２ C. １３ C and １４ The first measuring instrument 5 measures the proportion of C. The first measuring instrument 5 outputs the carbon isotope ratio obtained by the first measurement to the collation device 7.

[0036] The order of steps S1, S2, and S3 is not limited. Steps S1, S2, and S3 may be performed in parallel or serially. Steps S2 and S3 may be performed first.

[0037] In step S4, the converter 4 uses the first raw material supplied from the supply device 2 and the second raw material supplied from the acquisition device 3 to produce a product containing carbon.

[0038] In step S5, the second measuring instrument 6 measures the isotope ratio of carbon contained in the product (second measurement). １２ C. １３ C and １４ The second measuring instrument 6 measures the proportion of C. The second measuring instrument 6 outputs the carbon isotope ratio obtained by the second measurement to the collation device 7.

[0039] In step S6, the collation device 7 collates the carbon isotope ratio obtained by the first measurement (first measurement result) with the carbon isotope ratio obtained by the second measurement (second measurement result).

[0040] The collation device 7 １２ C. １３ C and １４ For example, in the second measurement result, １４ C is a concentration above a certain level, and in the first measurement result １４ C and the second measurement result １４ If the first measurement result is equal to the second measurement result, the matching device 7 may determine that the matching result is a "match." １４ C and the second measurement result １４ The density difference from C may be equal to or less than a predetermined threshold value.

[0041] The collation device 7 １２ C. １３ C and １４ The collation may be performed by comprehensively determining the proportion or composition ratio of C. For example, the collation device 7 may １２ C. １３ C and １４ The ratio of C and the second measurement result １２ C. １３ C and １４ The matching device 7 may perform matching using the ratio of C. １２ C. １３ C and １４ For example, the collation device 7 may perform the collation using a threshold value corresponding to each of the ratios of C in the first measurement result. １２ C. １３ C and １４ The ratio of C and the second measurement result １２ C. １３ C and １４ The comparison may be performed based on whether the difference between the ratio of C and the ratio of C is equal to or less than a predetermined threshold. １２ C. １３ C and １４ The ratio of C and the second measurement result １２ C.１３ C and １４ The collation may be performed based on whether the difference between the proportion of C and the proportion of C is within x% (x≧0). １２ C. １３ C and １４ The matching may be performed based on whether the proportion of C is equal to or greater than a threshold value of y% (y≧0).

[0042] The verification device 7 may store the location information where the second raw material was acquired in association with the first measurement result. The location information may be, for example, information about the location where the acquisition device 3 is installed (e.g., latitude and longitude, an area such as a continent, country, or city, or a facility such as a power plant). The verification device 7 may further verify the location information where the second raw material was acquired. For example, if the result of the verification of the first measurement result and the second measurement result is a "match," the verification device 7 may guarantee (or certify) the location information where the second raw material was acquired.

[0043] The verification device 7 may store time information when the second raw material was acquired in association with the first measurement result. The time information may be, for example, year and month, year and month, day, or year and month, day, hour, minute, and second. The verification device 7 may further verify the time information when the second raw material was acquired. For example, if the result of the verification of the first measurement result and the second measurement result is a "match," the verification device 7 may guarantee (or certify) the time information when the second raw material was acquired.

[0044] As described above, the identification system 1 according to one aspect of the present disclosure includes the converter 4 that uses a raw material containing carbon to produce a product containing carbon, and the verification device 7 that verifies a first measurement result, which is a measurement result of the isotope ratio of carbon contained in the raw material, with a second measurement result, which is a measurement result of the isotope ratio of carbon contained in the product.

[0045] An identification method according to one aspect of the present disclosure is performed by an identification system 1 including a converter 4 and a verification device 7. The identification method includes the steps of: using the converter 4 to produce a carbon-containing product from a raw material containing carbon; and using the verification device 7 to verify a first measurement result, which is a measurement result of the isotope ratio of carbon contained in the raw material, with a second measurement result, which is a measurement result of the isotope ratio of carbon contained in the product.

[0046] In an identification system 1 and an identification method according to one aspect of the present disclosure, a first measurement result of the carbon isotope ratio contained in a raw material is compared with a second measurement result of the carbon isotope ratio contained in a product manufactured from the raw material. The carbon isotope ratios contained in the raw material and the product do not change during the manufacturing process. Therefore, if the results of comparing the first measurement result and the second measurement result are consistent, it can be guaranteed (or proven) that a specific product was manufactured from a specific raw material.

[0047] The collation device 7 determines whether the first measurement result is １２ C. １３ C and １４ The ratio of C and the second measurement result １２ C. １３ C and １４ Matching is performed using the ratio of C and . １２ C. １３ C and １４ The proportion of C varies depending on the carbon source (e.g., air, biomass, or fossil sources). １２ C. １３ C and １４ By performing matching using each proportion of C, the accuracy of matching is improved.

[0048] The collation device 7 determines whether the first measurement result is １２ C. １３ C and １４ The ratio of C and the second measurement result １２ C. １３ C and １４ The comparison is performed based on whether the difference between the ratio of C and the ratio of the other is equal to or less than a predetermined threshold. １２ C. １３ C and １４By performing matching using the difference in the proportions of C and a predetermined threshold, the accuracy of matching is improved.

[0049] The verification device 7 stores the location information where the raw material was obtained in association with the first measurement result, and further verifies the location information where the raw material was obtained. If the verification result between the first measurement result and the second measurement result matches, it can be guaranteed that the raw material was obtained from specific location information (e.g., latitude and longitude, an area such as a continent, country, or city, or a facility such as a power plant). Furthermore, consumers (potential purchasers) of the product can select products based on their desire to contribute to reducing carbon emissions from the specific location information.

[0050] The verification device 7 stores the time information of the acquisition of the raw material in association with the first measurement result, and further verifies the time information of the acquisition of the raw material. If the verification result between the first measurement result and the second measurement result matches, it can be guaranteed that the raw material was acquired at a specific time information. Furthermore, a consumer (potential purchaser) of the product can select a product based on whether it corresponds to specific time information (e.g., date of birth or year of birth).

[0051] The raw material is CO obtained from the air. ２ or CO obtained from gas obtained by burning biomass fuel. ２ If the first measurement result and the second measurement result are in agreement, the raw material CO ２ It can be guaranteed that the CO2 is obtained based on the combustion of air or biomass fuels, i.e. the product is obtained based on the captured CO2 ２ It can be proven that the product was manufactured using only CO. ２ Products can be selected based on factors such as wanting to contribute to reducing waste.

[0052] The present disclosure is not necessarily limited to the above-described embodiments, and various modifications are possible without departing from the spirit of the present disclosure.

[0053] [Notes] The gist of the present disclosure is as follows: [1] An identification system comprising: a converter that uses a raw material containing carbon to produce a product containing carbon; and a collation device that compares a first measurement result that is a measurement result of the isotope ratio of carbon contained in the raw material with a second measurement result that is a measurement result of the isotope ratio of carbon contained in the product. [2] The collation device compares the first measurement result with a second measurement result that is a measurement result of the isotope ratio of carbon contained in the product. １２ C. １３ C and １４ The ratio of C and the second measurement result １２ C. １３ C and １４ [3] The identification system according to [1], wherein the matching device performs matching using a ratio of C in the first measurement result. １２ C. １３ C and １４ The ratio of C and the second measurement result １２ C. １３ C and １４ [4] The identification system according to any one of [1] to [3], wherein the verification device stores location information at which the raw material was acquired and the first measurement result in association with each other, and further verifies the location information at which the raw material was acquired. [5] The identification system according to any one of [1] to [4], wherein the verification device stores time information at which the raw material was acquired and the first measurement result in association with each other, and further verifies the time information at which the raw material was acquired. [6] The raw material is CO2 obtained from the air ２ or CO obtained from gas obtained by burning biomass fuel. ２ [7] An identification method executed by an identification system including a converter and a verification device, the method comprising: a step of producing a carbon-containing product using a raw material containing carbon by the converter; and a step of verifying, by the verification device, a first measurement result that is a measurement result of the isotope ratio of carbon contained in the raw material, with a second measurement result that is a measurement result of the isotope ratio of carbon contained in the product.

[0054] REFERENCE SIGNS LIST 1 Identification system 2 Supply device 3 Acquisition device 4 Converter 5 First measuring device 6 Second measuring device 7 Verification device

Claims

1. An identification system comprising: a converter that uses a raw material containing carbon to produce a product containing carbon; and a verification device that verifies a first measurement result, which is a measurement result of the isotope ratio of carbon contained in the raw material, with a second measurement result, which is a measurement result of the isotope ratio of carbon contained in the product.

2. The collation device １２ C. １３ C and １４ The ratio of C and the second measurement result １２ C. １３ C and １４ The identification system according to claim 1 , wherein matching is performed using a ratio of C and 3. The collation device １２ C. １３ C and １４ The ratio of C and the second measurement result １２ C. １３ C and １４ The identification system according to claim 2 , wherein the matching is performed based on whether or not the difference between the ratio of each of the values ​​and the ratio of C is equal to or less than a predetermined threshold value.

4. The identification system according to claim 1, wherein the verification device stores the location information at which the raw material was acquired in association with the first measurement result, and further verifies the location information at which the raw material was acquired.

5. The identification system according to claim 1, wherein the verification device stores time information when the raw material was obtained in association with the first measurement result, and further verifies the time information when the raw material was obtained.

6. The raw material is CO obtained from the air ２ or CO obtained from gas obtained by burning biomass fuel ２ 2. The identification system of claim 1, wherein:

7. An identification method performed by an identification system including a converter and a verification device, the identification method comprising the steps of: using the converter to produce a carbon-containing product using a raw material containing carbon; and using the verification device to verify a first measurement result that is a measurement result of the isotope ratio of carbon contained in the raw material with a second measurement result that is a measurement result of the isotope ratio of carbon contained in the product.

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