Program and calcium carbonate production system

Abstract

We provide a program and a calcium carbonate manufacturing system that allows for the transfer of carbon credits generated from the production of calcium carbonate, according to customer requests. [Solution] Program 12a causes the processor of the control unit 11 to execute the following processes from the customer terminal 30 used by the customer: obtaining the amount of carbon credits to be purchased; obtaining the reaction amount, which is the amount of carbon dioxide reacted by a calcium carbonate production apparatus that produces calcium carbonate by reacting carbon dioxide in the exhaust from a calcination kiln that produces calcium oxide by calcining limestone with calcium hydroxide; and setting the amount of carbon credits to be purchased as the customer's carbon credits when the reaction amount is equal to or greater than the amount of carbon credits to be purchased.

Description

Technical Field

[0001] The present invention relates to a program and a calcium carbonate production system.

Background Art

[0002] The slaked lime particles (calcium hydroxide particles) of Patent Document 1 are produced by adding quicklime (calcium oxide) to water. Then, the slaked lime particles are slurried to produce a slaked lime slurry. Calcium carbonate is produced by blowing carbon dioxide gas into the slaked lime slurry.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the calcium carbonate described in Patent Document 1 is produced, since carbon dioxide gas is fixed as calcium carbonate, an enterprise that manufactures calcium carbonate can obtain "reduction amount of greenhouse gas". The reduction amount of greenhouse gas generated by the production of calcium carbonate may be transferred to other enterprises as carbon credits. There is a demand for the development of a program that can transfer carbon credits according to customer requests and a calcium carbonate production system.

[0005] This disclosure has been made to solve the above problems, and an object thereof is to provide a program that can transfer carbon credits generated by the production of calcium carbonate according to customer requests and a calcium carbonate production system.

Means for Solving the Problems

[0006] To achieve the above objectives, the program according to the first aspect of this disclosure, disclosed below, causes the processor of an information processing device to execute the following processes from a customer terminal used by the customer: obtaining the amount of carbon credits to be purchased; obtaining the amount of carbon dioxide reacted by a calcium carbonate production apparatus, which reacts carbon dioxide in the exhaust from a calcination kiln that calcines limestone to produce calcium oxide with calcium hydroxide to produce calcium carbonate; and setting the amount of carbon credits to be purchased as the customer's carbon credits when the amount of carbon credits to be purchased is equal to or greater than the amount of carbon credits to be purchased.

[0007] Furthermore, a calcium carbonate production system according to a second aspect of this disclosure includes: a purchase quantity acquisition unit that acquires the purchase quantity of carbon credits from a customer terminal used by the customer; a reaction quantity acquisition unit that acquires the reaction quantity, which is the amount of carbon dioxide reacted by a calcium carbonate production apparatus that produces calcium carbonate by reacting carbon dioxide in the exhaust from a calcination kiln that calcines limestone to produce calcium oxide with calcium hydroxide; and a control unit that sets the purchase quantity of carbon credits to the customer's carbon credits when the reaction quantity becomes the purchase quantity of carbon credits. [Effects of the Invention]

[0008] According to the above configuration, carbon credits generated by the production of calcium carbonate can be transferred upon customer request. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a block diagram showing the configuration of the calcium carbonate production system 100 in the first embodiment. [Figure 2] Figure 2 is a block diagram showing the configuration of the calcium carbonate production control device 20. [Figure 3] Figure 3 is a block diagram showing the configuration of the calcium carbonate production apparatus 50. [Figure 4]Figure 4 is a schematic diagram showing the configuration of the calcium carbonate production apparatus 50. [Figure 5] Figure 5 is a functional block diagram of the device control unit 21. [Figure 6] Figure 6 is a block diagram showing the configuration of the customer terminal 30. [Figure 7] Figure 7 is a block diagram showing the configuration of the administrator terminal 40. [Figure 8] Figure 8 is a functional block diagram of the control unit 11. [Figure 9] Figure 9 is a diagram illustrating the data stored in database 12b. [Figure 10] Figure 10 is a diagram illustrating the data stored in database 12b. [Figure 11] Figure 11 shows an example of a screen displayed on the display unit 33 of the customer terminal 30. [Figure 12] Figure 12 is a diagram illustrating the data stored in database 12b. [Figure 13] Figure 13 is a diagram illustrating the data stored in database 12b. [Figure 14] Figure 14 is a diagram illustrating the data stored in database 12b. [Figure 15] Figure 15 is a control flow diagram executed by the control unit 11. [Figure 16] Figure 16 shows the composition of calcium hydroxide product 90. [Figure 17] Figure 17 shows an example of an image displayed on the information terminal 30a. [Figure 18] Figure 18 shows an example of an image displayed on the information terminal 30a. [Figure 19] Figure 19 shows an example of an image displayed on the information terminal 30a. [Figure 20] Figure 20 is a diagram illustrating the data stored in database 12b. [Modes for carrying out the invention]

[0010] Hereinafter, embodiments of the present disclosure will be described based on the drawings. Note that the present disclosure is not limited to the following embodiments, and design changes can be appropriately made within the scope that satisfies the configuration of the present disclosure. In the following description, the same reference numerals are commonly used for the same parts or parts having the same functions among different drawings, and the repeated description thereof is omitted. In addition, the respective configurations described in the embodiments and modification examples may be combined or changed as appropriate. Further, in order to make the description easier to understand, in the drawings referred to below, the configurations are shown in a simplified or schematic manner, or some of the constituent members are omitted.

[0011] [First Embodiment] (Overall Configuration of Calcium Carbonate Production System) FIG. 1 is a block diagram showing the configuration of a calcium carbonate production system 100 (hereinafter referred to as "system 100") in the first embodiment. FIG. 2 is a block diagram showing the configuration of a calcium carbonate production control device 20 (hereinafter referred to as "control device 20"). FIG. 3 is a block diagram showing the configuration of a calcium carbonate production device 50. FIG. 4 is a diagram schematically showing the configuration of the calcium carbonate production device 50.

[0012] System 100 is a system that produces calcium carbonate so as to generate carbon credits in response to the purchase of carbon credits by customers.

[0013] A "customer" is a person who purchases at least one of carbon credits and calcium hydroxide from the person operating system 100. A "carbon credit" is something in which the reduction amount (or emission right) of greenhouse gas such as carbon dioxide fixed in a solid or liquid state is provably tradable. That is, a "carbon credit" is a credit for trading the reduction amount of greenhouse gas as an emission quota (emission right) of greenhouse gas.

[0014] [Configuration of Each Part of System 100] As shown in Figure 1, the system 100 includes a server device 10 (information processing device). The server device 10 is configured to communicate with a control device 20, a plurality of customer terminals 30, a plurality of information terminals 30a, and an administrator terminal 40 via a network N. The network N is, for example, the Internet and a Local Area Network (LAN), but other networks may also be used.

[0015] Server device 10 is an information processing device for managing the production of calcium carbonate in such a way that carbon credits are generated in response to carbon credit purchases by customers. Server device 10 may be an on-premise (stationary) server device or a server device configured on the cloud. Server device 10 may be configured to store data in a data structure that uses distributed ledger technology (e.g., blockchain technology). This prevents tampering with the data in server device 10. However, if the likelihood of data tampering is low, server device 10 may store each piece of data in a data structure that does not use distributed ledger technology.

[0016] As shown in Figure 1, the server device 10 comprises a control unit 11, a storage unit 12, and a communication unit 13. The control unit 11 includes a processor (control circuit) that executes control processing of the server device 10 by executing program 12a. The storage unit 12 includes, for example, at least one of an SSD (Solid State Drive) or an HDD (Hard Disk Drive). The storage unit 12 stores program 12a and a database 12b. The communication unit 13 is a communication interface and is connected to the network N.

[0017] Each of the multiple customer terminals 30, multiple information terminals 30a, and administrator terminal 40 has an application program 35a (see Figures 6 and 7) installed for accessing the server device 10. "Administrator" refers to the person who manages the server device 10, and is not limited to private businesses; it may also be a local government, a national government, or an international organization. Each of the multiple customer terminals 30, multiple information terminals 30a, and multiple administrator terminals 40 receives information and images transmitted by the server device 10 by accessing the server device 10. Note that the use of dedicated application software is not limited to this; browser software (e.g., a web browser) may be installed on each of the multiple customer terminals 30, multiple information terminals 30a, and multiple administrator terminals 40. In this case, the information and images provided by the server device 10 are displayed on the browser on each of the multiple customer terminals 30, multiple information terminals 30a, and multiple administrator terminals 40.

[0018] Customer terminal 30 is an information terminal used by the customer. Administrator terminal 40 is an information terminal used by the administrator. Information terminal 30a is an information terminal used by persons other than the customer and the administrator. Persons other than the customer and the administrator include, for example, someone who has purchased calcium hydroxide from the customer and wishes to check the customer's carbon credit purchase history. Examples of "information terminals" include smartphones, smartwatches, personal computers, or tablet devices.

[0019] As shown in Figure 2, the control device 20 includes a device control unit 21, a communication unit 22, and a storage unit 23. The device control unit 21 includes a processor that controls the operation of the calcium carbonate production apparatus 50 by executing program 23a. The communication unit 22 is a communication interface for communicating with the network N. The storage unit 23 includes, for example, at least one of an SSD (Solid State Drive) or an HDD (Hard Disk Drive). Program 23a is stored in the storage unit 23.

[0020] As shown in Figure 3, the calcium carbonate production apparatus 50 includes a calcination kiln 51, a reaction apparatus 60, a first watering apparatus 81, a second watering apparatus 82, and a water treatment apparatus 83. The calcination kiln 51 is, for example, a rotary kiln calcination furnace. The calcination kiln 51 burns limestone, which is mainly composed of calcium carbonate. This causes the reaction shown in formula (1) below to occur, and calcium oxide (quicklime) is produced in the calcination kiln 51. The gas emitted from the calcination kiln 51 also contains carbon dioxide. CaCO3 → CaO + CO2···(1)

[0021] Furthermore, as shown in Figure 4, a product containing calcium oxide, but with a low calcium oxide content (e.g., 60% or less), adheres to and accumulates on the inner surface of the firing kiln 51. This product with a low calcium oxide content is called the waste soil 51a. This waste soil 51a is conventionally discarded (waste), but according to the first embodiment, calcium carbonate is produced (carbon dioxide absorption) using this waste soil 51a as a raw material.

[0022] As shown in Figure 4, the calcium carbonate production apparatus 50 includes a chimney 51b that discharges exhaust gas from the calcination kiln 51 into the atmosphere, and a fan (not shown) that blows air into the chimney 51b. The chimney 51b is provided with a gas supply port 51c that supplies a portion of the exhaust gas to the reaction apparatus 60.

[0023] Furthermore, the first watering device 81 and the second watering device 82 are devices that supply water to calcium oxide to produce calcium hydroxide. That is, both the first watering device 81 and the second watering device 82 produce the reaction shown in the following equation (2). CaO + H2O → Ca(OH)2···(2)

[0024] Furthermore, the first watering device 81 is a device that produces calcium hydroxide (first calcium hydroxide) using calcium oxide other than the excavated soil 51a generated from the calcination kiln 51 as a raw material. The second watering device 82 is a device that produces calcium hydroxide using the excavated soil 51a (containing calcium oxide) generated from the calcination kiln 51 as a raw material. The calcium hydroxide produced by the first watering device 81 is sold to customers. Here, the calcium carbonate production device 50 is a device that, in order to produce the first calcium hydroxide, produces the first calcium hydroxide by calcining limestone (calcium carbonate) to produce the first calcium oxide (a raw material for which limestone (calcium carbonate) will be later hydrated to produce the first calcium hydroxide), using the carbon dioxide emitted from the calcination kiln 51 to hydrate the excavated soil 51a (containing 52% second calcium oxide) inside the calcination kiln 51 to produce second calcium hydroxide, and then reacts the carbon dioxide emitted from the calcination kiln 51 with the second calcium hydroxide to produce second calcium carbonate. The first calcium hydroxide may be shipped as "calcium hydroxide," or it may be shipped as the first calcium carbonate produced by reacting the first calcium hydroxide with carbon dioxide. Furthermore, the second calcium hydroxide produced by hydrating the second calcium oxide in the excavated soil 51a, and then reacting this calcium hydroxide with carbon dioxide, is used as a roadbed material or soil conditioner because it contains impurities present in the excavated soil 51a. The production of the second calcium carbonate contributes to carbon dioxide reduction.

[0025] Furthermore, within the calcium carbonate production apparatus 50, multiple reaction units 60 are arranged in a vertical configuration. In the example shown in Figure 4, five reaction units 60 (calcium carbonate production units 60a to 60e) are arranged.

[0026] The reaction apparatus 60 is a device that reacts carbon dioxide in the exhaust with calcium hydroxide produced from the excavated soil 51a (calcium hydroxide produced by the second watering device 82). In other words, the reaction apparatus 60 produces the reaction shown in the following equation (3). Ca(OH)2+ CO2→ CaCO3+ H2O ···(3)

[0027] As shown in Figure 4, each of the calcium carbonate production units 60a to 60e contains an aqueous solution of calcium hydroxide. The calcium carbonate production apparatus 50 includes a supply pipe 52 that supplies exhaust gas from a gas supply port 51c to each of the calcium carbonate production units 60a to 60e, a valve 53 positioned between each of the calcium carbonate production units 60a to 60e and the gas supply port 51c, and a drive device 54 that drives the valve 53. The drive device 54 includes a motor and opens and closes the valve 53 based on commands from the apparatus control unit 21. A portion of the supply pipe 52 is submerged in the aqueous calcium hydroxide solution in the calcium carbonate production units 60a to 60e, and exhaust gas containing carbon dioxide is released from the supply pipe 52 into the aqueous calcium hydroxide solution. This causes a chemical reaction between calcium hydroxide and carbon dioxide.

[0028] Furthermore, the calcium carbonate production apparatus 50 includes a sensor for detecting the carbon dioxide concentration of the exhaust gas before it is released into the calcium hydroxide aqueous solution, and a sensor for detecting the carbon dioxide concentration of the gas released from the calcium hydroxide aqueous solution. The calcium carbonate production apparatus 50 transmits the detection results from these sensors to the control device 20.

[0029] Figure 5 is a functional block diagram of the device control unit 21. By executing program 23a, the device control unit 21 functions as a gas supply control unit 21a, a gas concentration detection unit 21b, a fan control unit 21c, and a firing control unit 21d. The gas supply control unit 21a controls the operation of the drive unit 54 based on commands from the server device 10. The gas concentration detection unit 21b calculates the amount of carbon dioxide reacting with calcium hydroxide based on the sensor detection results (concentration of carbon dioxide before reaction) and the sensor detection results (concentration of carbon dioxide after reaction), and the gas supply amount. The gas supply amount can be calculated from the gas supply time and the gas supply amount per hour. The gas concentration detection unit 21b transmits the calculated amount of carbon dioxide reacting to the server device 10. The fan control unit 21c operates the fan during the period when the firing kiln 51 is operating. The firing control unit 21d controls the operation of the firing kiln 51.

[0030] Figure 6 is a block diagram showing the configuration of the customer terminal 30. Figure 7 is a block diagram showing the configuration of the administrator terminal 40. As shown in Figure 6, the customer terminal 30 includes a control unit 31, an operation unit 32, a display unit 33, a communication unit 34, a storage unit 35, and a camera 36. The control unit 31 includes a processor that executes control processing by running a program. The control unit 31 executes each control processing of the customer terminal 30. The operation unit 32 is a user interface such as a keyboard, mouse, or touch panel. The display unit 33 is, for example, a liquid crystal display or an organic EL display. If the display unit 33 is configured as a touch panel, the touch panel may also serve as the operation unit 32 and the display unit 33. The communication unit 34 is a communication interface and is connected to the network N. The storage unit 35 includes, for example, at least one of an SSD (Solid State Drive) or an HDD (Hard Disk Drive). An application program 35a is stored in the storage unit 35. The camera 36 takes pictures of the outside of the customer terminal 30. The control unit 31 is configured to acquire information from a two-dimensional code when the two-dimensional code is captured by the camera 36. The information terminal 30a has the same configuration as the customer terminal 30, so its description is omitted.

[0031] As shown in Figure 7, the administrator terminal 40 includes a control unit 41, an operation unit 42, a display unit 43, a communication unit 44, and a storage unit 45. The configuration of the control unit 41 to the storage unit 45 is the same as the configuration of the control unit 31 to the storage unit 35 described above, so its explanation is omitted.

[0032] Figure 8 is a functional block diagram of the control unit 11. As shown in Figure 8, the control unit 11 functions as a purchase quantity acquisition unit 11a, a reaction quantity acquisition unit 11b, a manufacturing command unit 11c, and an information transmission unit 11d by executing program 12a.

[0033] Figures 9 and 10 are diagrams illustrating the data stored in database 12b. As shown in Figure 9, database 12b stores the amount of calcium hydroxide purchased, associated with the amount of carbon dioxide emitted during the production of the calcium hydroxide. When calcium hydroxide is purchased by a customer, the purchase quantity acquisition unit 11a stores the customer's identification information (customer ID) and the amount of calcium hydroxide purchased by that customer in database 12b, associated with a transaction ID (which is assigned individually for each transaction), as shown in Figure 10. The purchase quantity acquisition unit 11a also stores the emission amount in database 12b, associated with the customer ID.

[0034] Figure 11 shows an example of a screen displayed on the display unit 33 of the customer terminal 30. As shown in Figure 11, the display unit 33 of the customer terminal 30 displays an input screen for the amount of carbon credits to be purchased. The input screen displays the amount of calcium hydroxide to be purchased transmitted from the server device 10, the amount of carbon dioxide emitted from the production of the calcium hydroxide, an input field for the amount of carbon credits to be purchased, and the price. This allows the customer to decide on the amount of carbon credits to purchase while being aware of the amount of carbon dioxide emitted from the production of the purchased calcium hydroxide. In the example in Figure 11, the amount of carbon credits to be purchased is entered to match the amount of carbon dioxide emitted, which is "50 kg".

[0035] Figures 12 to 14 are diagrams illustrating the data stored in database 12b. Figure 15 is a control flow diagram executed by the control unit 11. In step S1, the purchase quantity acquisition unit 11a acquires the purchase quantity of carbon credits (see Figure 11) from the customer terminal 30. The purchase quantity acquisition unit 11a stores the acquired purchase quantity of carbon credits in association with the customer ID and transaction ID.

[0036] In step S2, the manufacturing command unit 11c associates a customer ID with at least one of the calcium carbonate manufacturing units 60a to 60e, depending on the amount of carbon credits purchased. That is, it assigns a customer to at least one of the calcium carbonate manufacturing units 60a to 60e. For example, if the amount of carbon credits purchased is large, the customer may be assigned to two or more of the calcium carbonate manufacturing units 60a to 60e. Also in step S2, the manufacturing command unit 11c starts the production of calcium carbonate (the valve 53 is opened) using at least one of the calcium carbonate manufacturing units 60a to 60e to which the customer ID is associated. However, this is not an example, and a customer ID may be assigned to any calcium carbonate manufacturing unit 60a to 60e that is in operation (in the state of producing calcium carbonate).

[0037] In step S3, the reaction amount acquisition unit 11b acquires the amount of carbon dioxide produced. In step S4, it is determined whether the amount of carbon dioxide produced is equal to or greater than the amount of carbon credits purchased. This determination is repeated until the amount of carbon dioxide produced is equal to or greater than the amount of carbon credits purchased. If the amount of carbon dioxide produced is equal to or greater than the amount of carbon credits purchased, the process proceeds to step S5. As shown in Figures 13 and 14, in step S5, the amount of carbon credits purchased is associated with the customer ID as carbon credits and stored (set) in the database 12b. Figure 13 shows the state before setting, and Figure 14 shows the state after setting. As a result, carbon credits purchased by the customer are generated, and the carbon credits become the customer's property. Then, in step S6, the production of calcium carbonate by the calcium carbonate production unit associated with the customer ID is stopped (valve 53 is closed).

[0038] Figure 16 shows the configuration of the calcium hydroxide product 90. Figures 17 and 18 show examples of images displayed on the information terminal 30a. The operator of the system 100 sells the calcium hydroxide product 90 to customers as shown in Figure 16. The calcium hydroxide product 90 is configured, for example, as a carbon dioxide absorption filter. A two-dimensional code 91 is printed on the surface of the calcium hydroxide product 90. The two-dimensional code 91 stores information for accessing the server device 10 (URL: Uniform Resource Locator), a transaction ID, and a customer ID. As shown in Figure 17, the information terminal 30a reads the two-dimensional code 91 with the camera 36 and sends a signal to the server device 10 requesting the purchase amount of carbon credits corresponding to the transaction ID and customer ID. The information transmission unit 11d of the server device 10 transmits to the information terminal 30a, in response to the requested signal, the purchase amount of calcium hydroxide, the carbon dioxide emissions from the production of the calcium hydroxide, the purchase amount of carbon credits, and the difference between the emissions and the purchase amount of carbon credits. The information terminal 30a displays the information received from the information transmission unit 11d. This allows a third party who owns the information terminal 30a and has purchased the calcium hydroxide product 90 from the customer to verify the amount of carbon credits purchased by the customer.

[0039] The above example illustrates a case where carbon credits are purchased by a customer who has purchased calcium hydroxide, but this is not the only example. As shown in Figure 19, a person who does not purchase calcium hydroxide may also purchase carbon credits using the information terminal 30a. In this case, for example, the server device 10 assigns a customer ID to the person who does not purchase calcium hydroxide, and manages the amount of carbon credits purchased in the database 12b in association with the customer ID, as shown in Figure 20.

[0040] [Differentiation] The embodiments described above are merely illustrative examples for implementing this disclosure. Therefore, this disclosure is not limited to the embodiments described above, and it is possible to implement the embodiments described above by modifying them as appropriate without departing from the spirit of the disclosure.

[0041] (1) In the above embodiment, an example was shown in which the valve 53 is closed when the reaction amount exceeds the amount of carbon credits purchased, but the disclosure is not limited thereto. That is, even if the reaction amount of carbon dioxide exceeds the amount of carbon credits purchased, the production of calcium carbonate may be continued (for example, by associating it with a different customer ID) without stopping.

[0042] (2) In the above embodiment, an example was shown in which the calcium hydroxide used as the raw material for calcium carbonate produced by the calcium carbonate production apparatus was excavated soil containing calcium carbonate adhering to the inner surface of the calcination kiln. However, the disclosure is not limited to this example. Raw materials other than excavated soil may be used. For example, the calcium hydroxide used as the raw material for calcium carbonate produced by the calcium carbonate production apparatus may be rubble (fragments of the product or other similar unwanted materials), grid (impurities present in the process when preparing calcium oxide, calcium salts remaining after calcination, etc.), or it may not have to be waste.

[0043] (3) In the above embodiment, an example was shown in which the information processing device is configured as a server device, but the disclosure is not limited thereto. That is, some or all of the processing of the server device described above may be performed by the calcium carbonate production control device. For example, an example was shown in which the server device calculates the reaction amount, but the reaction amount may be calculated by the calcium carbonate production control device.

[0044] (4) In the above embodiment, an example was shown in which the server device and the calcium carbonate production control device are configured separately, but the disclosure is not limited thereto. That is, the server device and the calcium carbonate production control device may be configured as a single information processing device, or they may be configured as three or more information processing devices that perform a portion of the processing of the server device and a portion of the processing of the calcium carbonate production control device.

[0045] Furthermore, the above-described configuration can be explained as follows.

[0046] The program according to the first configuration causes the processor of the information processing device to execute the following processes from the customer terminal used by the customer: obtaining the amount of carbon credits to be purchased; obtaining the amount of carbon dioxide reacted by a calcium carbonate production device, which reacts carbon dioxide in the exhaust from a calcination kiln that produces calcium oxide by calcining limestone with calcium hydroxide to produce calcium carbonate; and setting the amount of carbon credits to be purchased as the customer's carbon credits when the amount of carbon credits to be purchased is equal to or greater than the amount of carbon credits to be purchased (first configuration).

[0047] According to the first configuration described above, calcium carbonate, which fixes carbon dioxide, is produced in proportion to the amount of carbon credits purchased by the customer, making it easy to generate carbon credits in proportion to the customer's purchase amount. This allows for the transfer of carbon credits generated by the production of calcium carbonate to be made according to the customer's request.

[0048] In the first configuration, the program may be configured to further cause the processor to perform the following process: obtain the amount of calcium hydroxide purchased by the customer, which is the amount of calcium hydroxide produced by a hydration device that reacts calcium oxide produced by the calcination kiln with water to produce calcium hydroxide; refer to a database that associates the amount of calcium hydroxide with the amount of carbon dioxide emitted from the calcination kiln to produce that amount of calcium hydroxide; and transmit the amount of carbon dioxide corresponding to the amount of calcium hydroxide purchased to the customer terminal (second configuration).

[0049] According to the second configuration described above, customers who purchase calcium hydroxide can recognize the carbon dioxide emissions corresponding to the calcium hydroxide they purchased. Furthermore, customers can offset the carbon dioxide emissions from the production of calcium hydroxide (carbon offset) by purchasing carbon credits equivalent to those emissions.

[0050] In the first or second configuration, the program may be configured to cause the processor to perform a process of transmitting the customer's carbon credits to the information terminal in response to a request from an information terminal other than the customer terminal (third configuration).

[0051] According to the third configuration described above, persons other than the customer will be able to verify the amount of carbon credits purchased by that customer.

[0052] In any one of the first to third configurations, the calcium carbonate production apparatus may include a plurality of calcium carbonate production units for producing calcium carbonate. The program may further cause the processor to execute a process to determine which of the plurality of calcium carbonate production units corresponds to the customer based on the amount of carbon credits purchased, and a process to stop the production of calcium carbonate by the calcium carbonate production unit determined in the determination process when the reaction amount exceeds the amount of carbon credits purchased (fourth configuration).

[0053] According to the fourth configuration described above, even when operating the calcium carbonate manufacturing equipment in response to requests from multiple customers, it is possible to manufacture calcium carbonate in accordance with the respective purchase quantities of each customer.

[0054] In any one of the first to fourth configurations, the calcium hydroxide used as a raw material for the calcium carbonate produced by the calcium carbonate production apparatus may include calcium hydroxide produced by reacting calcium oxide in waste containing calcium oxide with water (fifth configuration).

[0055] According to the fifth configuration described above, materials that would normally be discarded can be utilized. This allows for the effective use of resources.

[0056] In the fifth configuration, the waste may include residual soil containing calcium oxide that has adhered to the inner surface of the firing kiln (sixth configuration).

[0057] According to the sixth configuration described above, it is possible to utilize excavated soil that would normally be discarded. This allows for the effective use of resources.

[0058] The calcium carbonate production system according to the seventh configuration includes: a purchase quantity acquisition unit that acquires the purchase quantity of carbon credits from a customer terminal used by the customer; a reaction quantity acquisition unit that acquires the reaction quantity, which is the amount of carbon dioxide reacted by a calcium carbonate production apparatus that produces calcium carbonate by reacting carbon dioxide in the exhaust from a calcination kiln that produces calcium oxide by calcining limestone with calcium hydroxide; and a control unit that sets the purchase quantity of carbon credits to the customer's carbon credits when the reaction quantity becomes the purchase quantity of carbon credits (seventh configuration).

[0059] According to the seventh configuration described above, calcium carbonate, which fixes carbon dioxide, is produced in proportion to the amount of carbon credits purchased by the customer, making it easy to generate carbon credits in proportion to the customer's purchase amount. This allows for the transfer of carbon credits generated by the production of calcium carbonate to be made available to the customer upon request.

[0060] In the seventh configuration, the calcium carbonate production apparatus may include a plurality of calcium carbonate production units for producing calcium carbonate. The control unit may be configured to determine which of the plurality of calcium carbonate production units corresponds to the customer based on the amount of carbon credits purchased, and to stop the production of calcium carbonate by the calcium carbonate production unit determined by the determination process when the reaction amount exceeds the amount of carbon credits purchased (eighth configuration).

[0061] According to the eighth configuration described above, even when operating the calcium carbonate manufacturing equipment in response to requests from multiple customers, it is possible to manufacture calcium carbonate in accordance with the respective purchase quantities of each customer. [Explanation of Symbols]

[0062] 10: Server device, 11: Control unit, 11a: Purchase quantity acquisition unit, 11b: Reaction quantity acquisition unit, 11c: Manufacturing command unit, 11d: Information transmission unit, 12: Storage unit, 12a: Program, 12b: Database, 13: Communication unit, 20: Calcium carbonate manufacturing control device, 21: Device control unit, 21a: Gas supply control unit, 21b: Gas concentration detection unit, 21c: Fan control unit, 21d: Firing control unit, 22: Communication unit, 23: Storage unit, 23a: Program, 23a: Program, 30: Customer terminal, 30a: Information terminal, 30a: Information terminal, 31: Control unit, 32: Operation unit, 33: Display unit, 34: Communication unit, 35: Storage unit, 35a: Application program, 36: Camera, 40: Administrator terminal, 41: Control unit, 42: Operation unit, 43: Display unit, 44: Communication unit, 45: Memory unit, 50: Calcium carbonate production apparatus, 51: Firing kiln, 51a: Excavated soil, 51b: Chimney, 51c: Gas supply port, 52: Supply pipe, 53: Valve, 54: Drive unit, 60: Reaction apparatus, 60a: Calcium carbonate production unit, 60b: Calcium carbonate production unit, 60c: Calcium carbonate production unit, 60d: Calcium carbonate production unit, 60e: Calcium carbonate production unit, 81: First watering device, 82: Second watering device, 83: Water treatment device, 90: Calcium hydroxide product, 91: Two-dimensional code, 100: Calcium carbonate production system, N: Network

Claims

1. The process of obtaining the amount of carbon credits purchased from the customer's terminal, A process to obtain the reaction amount, which is the amount of carbon dioxide reacted in a calcium carbonate production apparatus, in which carbon dioxide in the exhaust from a calcination kiln that produces calcium oxide by calcining limestone is reacted with calcium hydroxide to produce calcium carbonate, A program that causes the processor of an information processing device to execute the following: when the reaction amount exceeds the amount of carbon credits to be purchased, the amount of carbon credits to be purchased is set to the customer's carbon credits.

2. The amount of calcium hydroxide produced by a hydration device that reacts calcium oxide generated in the aforementioned calcination kiln with water to produce calcium hydroxide is obtained as the amount of calcium hydroxide purchased by the customer. The program according to claim 1, further comprising causing the processor to perform a process of referring to a database that associates the amount of calcium hydroxide with the amount of carbon dioxide emitted from the calcination kiln to produce the said amount of calcium hydroxide, and transmitting the amount of carbon dioxide corresponding to the amount of calcium hydroxide purchased to the customer terminal.

3. The program according to claim 1, further causing the processor to execute a process of transmitting the customer's carbon credits to the information terminal in response to a request from an information terminal other than the customer terminal.

4. The aforementioned calcium carbonate production apparatus includes a plurality of calcium carbonate production units for producing calcium carbonate, A process to determine which calcium carbonate manufacturing unit to assign to the customer from among multiple calcium carbonate manufacturing units based on the amount of carbon credits purchased, The program according to claim 1, further comprising causing the processor to execute a process to stop the production of calcium carbonate by the calcium carbonate production unit determined by the determination process when the amount of reaction exceeds the amount of carbon credits to be purchased.

5. The program according to any one of claims 1 to 4, wherein the calcium hydroxide used as a raw material for calcium carbonate produced by the calcium carbonate production apparatus includes calcium hydroxide produced by reacting calcium oxide in waste containing calcium oxide with water.

6. The program according to claim 5, wherein the waste includes residual soil containing calcium oxide adhering to the inner surface of the firing kiln.

7. A purchase quantity acquisition unit that acquires the amount of carbon credits purchased from the customer's terminal used by the customer, A reaction amount acquisition unit acquires the amount of carbon dioxide reacted by a calcium carbonate production apparatus, which produces calcium carbonate by reacting carbon dioxide in the exhaust from a calcination kiln that calcines limestone to produce calcium oxide with calcium hydroxide, and A calcium carbonate production system comprising: a control unit that sets the amount of carbon credits to be purchased to the customer's carbon credits when the amount of reaction equals the amount of carbon credits to be purchased.

8. The aforementioned calcium carbonate production apparatus includes a plurality of calcium carbonate production units for producing calcium carbonate, The control unit, Based on the amount of carbon credits purchased, a calcium carbonate manufacturing unit to be assigned to the customer is determined from among several calcium carbonate manufacturing units. The calcium carbonate production system according to claim 7, wherein the production of calcium carbonate by the calcium carbonate production unit determined by the determination process is stopped when the amount of reaction exceeds the amount of carbon credits to be purchased.

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