Carbon dioxide emissions calculation system, and method and program thereof

Abstract

To provide a carbon dioxide emissions calculation system capable of calculating CO2 emissions even when separated material is generate; and to provide a method thereof and a program thereof.SOLUTION: Provided is a carbon dioxide emissions calculation system, and the system calculates CO2 emissions related to target products manufactured during a prescribed period at a factory where products of a plurality of types can be manufactured through a plurality of processes starting from treating raw materials. The plurality of processes includes a process in which separation from a body occurs during treatment. In the system, the sum of raw materials CO2 emissions and each process CO2 emissions calculated with regard to each of the plurality of processes for manufacturing the target products is calculated as overall process CO2 emissions α; the sum of product raw materials CO2 emissions and each product process CO2 emissions calculated with regard to each of the plurality of processes is calculated as total product CO2 emissions β; and separation CO2 emissions γ pertaining to the separation is obtained by subtracting the total product CO2 emissions β from the overall process CO2 emissions α.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a carbon dioxide emission calculation system, a carbon dioxide emission calculation method, and a carbon dioxide emission calculation program for determining the CO2 emission amount associated with a product manufactured through a plurality of processes including a process that produces a separated material that is separated from the main body during processing. [Background technology]

[0002] In recent years, carbon dioxide emissions have been of interest from the viewpoint of protecting the global environment, etc. Such technology relating to carbon dioxide emissions is disclosed in, for example, Patent Document 1.

[0003] The carbon traceability management system disclosed in Patent Document 1 includes a utility management means for recording and managing the power received from outside, the amount of hot and cold energy received, the operation record of the private power generation facility, and the operation record of the hot and cold energy facility, a material management means for recording and managing the usage record of materials and raw materials, a facility management means for managing and recording the energy used by the facility equipment during the manufacturing period, a manufacturing execution management means for managing the production record of the product, an emission calculation means for calculating the greenhouse gas emission amount from each of the records recorded and managed by the utility management means, the material management means, the facility management means, and the manufacturing execution management means, and a manufacturing control means for calculating the greenhouse gas emission amount calculated by the emission calculation means as one unit amount of the product. The carbon traceability management system has an emission allocation means for allocating the greenhouse gas emissions to the production lot, and classifies the power equipment that operates by receiving energy from the primary power equipment as secondary power equipment, and classifies non-power equipment that operates by receiving energy from the primary power equipment and secondary power equipment as tertiary equipment, with respect to the equipment classified as primary power equipment such as boilers, power receiving equipment, private power generation equipment, and water supply equipment. The emission allocation means allocates the greenhouse gas emissions of the product lot based on the usage status corresponding to the product lot of the tertiary equipment and the usage status corresponding to the product lot of the secondary equipment, and has an emission management means for managing the greenhouse gas emissions allocated to the production lot as unique data of the production lot. This carbon traceability management system allocates the greenhouse gas emissions associated with the discarded production lot and cleaning work as the emission amount of the product lot according to a certain rule. More specifically, the greenhouse gas emissions generated by the related cleaning work and the production of the discarded lot are apportioned based on the allocation policy. Under this allocation policy, a discarded lot is allocated pro rata to each production lot of the same item produced within 60 hours, regardless of the manufacturing process of the item, in the ratio of 1 / 3. Also, if three or more lots of the same item are not produced within that time, the greenhouse gas emissions from the discarded lot remaining at the time that the time has elapsed are allocated to the first production lot of the same item produced after that time has elapsed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5097728 (JP 2010-191832 A) Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, the carbon traceability management system disclosed in Patent Document 1 can manage CO2 emissions on a lot-by-lot basis, but cannot manage (calculate) the CO2 emissions of separated matter that is separated from the main body during processing in a process, which is not on a lot-by-lot basis.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and its purpose is to provide a carbon dioxide emission calculation system, a carbon dioxide emission calculation method, and a carbon dioxide emission calculation program that can calculate CO2 emissions even when separated matter is produced. [Means for solving the problem]

[0007] As a result of various investigations, the inventors of the present invention have found that the above object can be achieved by the present invention described below. That is, a carbon dioxide emission calculation system according to one aspect of the present invention is a system for calculating CO2 emissions relating to target products manufactured in a specified period in a factory capable of manufacturing a plurality of types of products manufactured from raw materials through a plurality of processes, the plurality of processes including a process in which a separated matter is generated during processing, the system including a first emission calculation unit for calculating raw material CO2 emissions relating to the target product from the raw material CO2 emissions of the raw materials, and a process CO2 emission calculation unit for calculating, for each of a plurality of processes for manufacturing the target product, the process CO2 emissions relating to the process, and among the calculated process CO2 emissions, The system is equipped with a second emission calculation unit that calculates a product process CO2 emission amount related to the target product in the process, a total emission calculation unit that calculates a total process CO2 emission amount by summing the raw material CO2 emission amount and each process CO2 emission amount calculated for each of the multiple processes for producing the target product, and calculates a total product CO2 emission amount by summing the product raw material CO2 emission amount and each product process CO2 emission amount calculated for each of the multiple processes for producing the target product, and a separated product emission calculation unit that calculates a separated product CO2 emission amount related to the separated product by subtracting the calculated total product CO2 emission amount from the calculated total process CO2 emission amount. Preferably, in the above-mentioned carbon dioxide emission calculation system, there are multiple target products, the first emission calculation unit calculates, for each of the multiple target products, the CO2 emission from the raw materials of the target products, the second emission calculation unit calculates, for each of the multiple target products, the CO2 emission from the production process of the target products, the total emission calculation unit calculates, for each of the multiple target products, the total product CO2 emission of the target products, and the separated product emission calculation unit calculates, for each of the multiple target products, the CO2 emission from the separated product of the target products.

[0008] This type of carbon dioxide emission calculation system calculates the CO2 emissions of separated products from the target product after the final process by subtracting the total product CO2 emissions related to the target product after the final process from the total process CO2 emissions when manufacturing the target product, so that it is possible to calculate CO2 emissions (for example, the total product CO2 emissions and separated product CO2 emissions, etc.) even if separated products are produced.

[0009] In another aspect, the above-mentioned carbon dioxide emission calculation system further includes an aggregation calculation unit that, when there are multiple target products that are classified as the same during the specified period, calculates the sum of the separated CO2 emissions calculated for each of the multiple target products as an aggregated separated CO2 emission amount. Preferably, in the above-mentioned carbon dioxide emission calculation system, when there are a plurality of target products, the system further includes a unit amount calculation unit that calculates the amount of separated matter (yield loss amount, yield loss amount, for example, separated matter weight (yield loss weight) or separated matter volume (yield loss volume)) of the separated matter in the target product by subtracting the product amount (for example, product weight or product volume) of the target product from the raw material amount (for example, raw material weight or raw material volume) of the target product for each of the plurality of target products, calculates the sum of each separated matter amount (yield loss amount) calculated for each of the plurality of target products as an aggregate separated matter amount (aggregated yield loss amount), and calculates the unit separated matter CO2 emission amount, which is the CO2 emission amount per unit amount of the separated matter, by dividing the calculated aggregate separated matter amount (aggregated yield loss amount). Preferably, in the above-mentioned carbon dioxide emission calculation system, the target product is a metal product and is classified by its component composition. Preferably, in the above-mentioned carbon dioxide emission calculation system, the target product is classified by its product type name. Preferably, in the carbon dioxide emission amount calculation system described above, the target products are classified by consumer name.

[0010] When there are multiple target products that are classified in the same way, such a carbon dioxide emission calculation system can calculate an aggregate separated CO2 emission amount by aggregating the CO2 emission amount of each separated product of the multiple target products.

[0011] In another aspect, the carbon dioxide emission calculation system further includes an allocation amount calculation unit that allocates the calculated aggregate separated CO2 emissions to each of the multiple target products so that the allocation amount per unit amount is the same. Preferably, in the carbon dioxide emission calculation system, the allocation amount calculation unit allocates the calculated aggregate separated CO2 emissions to each of the multiple target products in a ratio of product amounts in the target products. Preferably, in the carbon dioxide emission calculation system, the allocation amount calculation unit allocates the calculated aggregate separated CO2 emissions to each of the multiple target products by multiplying the calculated aggregate separated CO2 emissions by the ratio of product amounts in the target products to calculate a separated CO2 allocation amount, which is the CO2 emissions to be allocated to the target product among the calculated aggregate separated CO2 emissions, for each of the multiple target products. Preferably, the above-mentioned carbon dioxide emission calculation system further includes a unit amount calculation unit that calculates, for each of the plurality of target products, a unit separated CO2 allocation amount, which is the CO2 allocation amount per unit amount in the target product, by dividing the calculated separated CO2 allocation amount of the target product by the product amount of the target product.

[0012] Such a carbon dioxide emission calculation system can allocate the aggregated separated CO2 emission amount equally to each of multiple target products.

[0013] In another aspect, in the carbon dioxide emission calculation system described above, there are multiple target products, and the first emission calculation unit calculates, for each of the multiple target products, CO2 emissions from raw materials of the target products, the second emission calculation unit calculates, for each of the multiple target products, CO2 emissions from the product process of the target products, the total emission calculation unit calculates, for each of the multiple target products, total product CO2 emissions of the target products, the separated product emission calculation unit calculates, for each of the multiple target products, the separated product CO2 emission amount, which is calculated as the sum of the total product CO2 emissions calculated for each of the multiple target products, as an aggregated total product CO2 emission, the sum of the separated product CO2 allocation amounts allocated by the allocation amount calculation unit for each of the multiple target products, as an aggregated separated product CO2 allocation amount, and a period emission calculation unit calculates the sum of the calculated aggregated total product CO2 emission and the calculated aggregated separated product CO2 allocation amount as a period CO2 emission.

[0014] Such a carbon dioxide emission calculation system can calculate the amount of CO2 emission for a given period in the factory.

[0015] A carbon dioxide emission calculation method according to another aspect of the present invention is a method for calculating CO2 emissions relating to a target product manufactured in a specified period in a factory capable of manufacturing a plurality of types of products manufactured from raw materials through a plurality of processes, the plurality of processes including a process in which a separated matter is produced during processing, the method including a first emission calculation step of calculating raw material CO2 emissions of the raw materials relating to the target product, and a process CO2 emission calculation step of calculating process CO2 emissions relating to each of a plurality of processes for manufacturing the target product, the process CO2 emissions relating to each of the processes being calculated, and the process CO2 emissions calculated for each of the processes being calculated. The method includes a second emission calculation step of calculating a product process CO2 emission amount related to the target product, a total emission calculation step of calculating a total process CO2 emission amount by summing the raw material CO2 emission amount and each process CO2 emission amount calculated for each of the multiple processes for producing the target product, and calculating a total product CO2 emission amount by summing the product raw material CO2 emission amount and each product process CO2 emission amount calculated for each of the multiple processes for producing the target product, and a separated product emission calculation step of calculating a separated product CO2 emission amount related to the separated product by subtracting the calculated total product CO2 emission amount from the calculated total process CO2 emission amount.

[0016] This carbon dioxide emission calculation method calculates the separated CO2 emissions of the target product that did not constitute the target product after the final process by subtracting the total product CO2 emissions related to the target product after the final process from the total process CO2 emissions when manufacturing the target product, so that it is possible to calculate CO2 emissions (for example, the total product CO2 emissions and separated CO2 emissions, etc.) even if separated products are generated.

[0017] Another aspect of the present invention is a carbon dioxide emission calculation program that calculates CO2 emissions for a target product of a target type manufactured during a specified period in a factory capable of manufacturing multiple types of products that are manufactured from raw materials through multiple processes, and causes a computer to function as any of the carbon dioxide emission calculation systems described above.

[0018] This makes it possible to provide a carbon dioxide emission calculation program, which has the same effects as those of the above-mentioned carbon dioxide emission calculation systems. Effect of the Invention

[0019] The carbon dioxide emission calculation system, the carbon dioxide emission calculation method, and the carbon dioxide emission calculation program according to the present invention can determine the amount of CO2 emission even when separated substances are generated. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a diagram for explaining an overview of a carbon dioxide emission calculation system according to an embodiment. [Diagram 2] FIG. 2 is a diagram showing a configuration of the carbon dioxide emission calculation system. [Diagram 3] FIG. 13 is a diagram showing a product manufacturing performance information table, which is one example of product information. [Figure 4] FIG. 13 is a diagram showing an example of a unit CO2 emission amount information table. [Diagram 5] 4 is a flowchart showing an operation of the carbon dioxide emission calculation system. [Figure 6] As an example, this is a diagram for explaining a method of calculating process CO2 emissions for each of a product with a product name "P001" and a product with a product name "P002". [Figure 7] As an example, this is a diagram for explaining a method of calculating process CO2 emissions for each of a product with a product name "P003" and a product with a product name "P004". [Figure 8] As an example, this is a diagram for explaining a method of calculating process CO2 emissions for each of a product with a product name "P005" and a product with a product name "P006". [Figure 9] As an example, this is a diagram to explain how to calculate the product process CO2 emissions, total process CO2 emissions, total product CO2 emissions, and separated product CO2 emissions for a product with the product name "P001" and a product with the product name "P002". [Figure 10] As an example, this is a diagram to explain how to calculate the product process CO2 emissions, total process CO2 emissions, total product CO2 emissions, and separated product CO2 emissions for a product with the product name "P003" and a product with the product name "P004". [Figure 11] As an example, this is a diagram to explain how to calculate the product process CO2 emissions, total process CO2 emissions, total product CO2 emissions, and separated product CO2 emissions for a product with the product name "P005" and a product with the product name "P006". [Figure 12] As an example, this is a diagram showing a list of the CO2 emissions of each separated product for each product named "P001" to "P006". [Figure 13] FIG. 13 is a diagram for explaining a method for calculating the aggregate separated product CO2 emission amount and the unit aggregate separated product CO2 emission amount in a case where products are classified by product type name, as an example. [Figure 14] As an example, this is a diagram for explaining a method of calculating the separated CO2 distribution amount and the unit separated CO2 distribution amount for each product name when products are classified by type name. [Figure 15] As an example, this is a diagram for explaining a method of calculating period CO2 emissions for each product name when products are classified by type name. [Figure 16] FIG. 13 is a diagram for explaining a method for calculating aggregate separated CO2 emissions when products are classified by consumer name, as an example. [Figure 17] As an example, this is a diagram for explaining a method of calculating the separated product CO2 allocation amount and the unit separated product CO2 allocation amount when products are classified by consumer name. [Figure 18] As an example, this is a diagram for explaining a method of calculating period CO2 emissions for each product name in a case where the products are classified by consumer name. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, one or more embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the disclosed embodiments. In addition, configurations with the same reference numerals in each drawing indicate that they are the same configurations, and their description will be omitted as appropriate. In this specification, when referring to a general term, a reference numeral without a subscript is used, and when referring to an individual configuration, a reference numeral with a subscript is used.

[0022] FIG. 1 is a diagram for explaining an outline of a carbon dioxide emission calculation system in an embodiment. The carbon dioxide emission calculation system in the embodiment is a system for calculating the amount of carbon dioxide emission (CO2 emission) related to a target product manufactured in a predetermined period in a factory (plant) capable of manufacturing a plurality of types of products manufactured from raw materials through a plurality of processes. The carbon dioxide emission calculation system includes a process in which a separated matter is generated that is separated from a main body during processing in the plurality of processes, and is equipped with a first emission calculation unit, a second emission calculation unit, a total emission calculation unit, and a separated matter emission calculation unit. The first emission calculation unit calculates the product raw material CO2 emission related to the target product among the raw material CO2 emission of the given raw material. The second emission calculation unit calculates the process CO2 emission related to each of a plurality of processes for manufacturing the target product in the process, and calculates the product process CO2 emission related to the target product in the process among the calculated process CO2 emissions. The total emission calculation unit calculates the sum of the raw material CO2 emission amount and each process CO2 emission amount calculated for each of the multiple processes for manufacturing the target product as total process CO2 emission amount α, and calculates the sum of the product raw material CO2 emission amount and each product process CO2 emission amount calculated for each of the multiple processes for manufacturing the target product as total product CO2 emission amount β, as shown in Fig. 1. In Fig. 1, raw materials and shipment are each illustrated as being considered as one process, with process 1 representing raw materials and process 7 representing shipment. The separated product emission calculation unit calculates separated product CO2 emission amount γ related to the separated product by subtracting the calculated total product CO2 emission amount β from the calculated total process CO2 emission amount α.

[0023] The carbon dioxide emission calculation system and the carbon dioxide emission calculation method and carbon dioxide emission calculation program implemented therein will be described in more detail below. Here, a factory (plant) capable of manufacturing a wide variety of rolled steel plates will be used as an example, but the factory (plant) may be any as long as it is capable of manufacturing multiple types of products manufactured through multiple processes, including a process that generates separated material that is separated from the main body during processing. The separated material is material that is lost during the implementation of a process and does not constitute a product, such as scraps or offcuts generated by cutting parts that do not meet quality or dimensional standards, shavings generated by cutting, and polishing dust generated by polishing. The carbon dioxide emission calculation system may be configured by connecting an input / output terminal device that inputs and outputs data, one or more calculation processing devices (e.g., a server device) that executes various calculation processes, and one or more database devices that store (manage) various data so that they can communicate with each other, or at least some of these input / output terminal devices, one or more calculation processing devices, and one or more database devices may be configured as an integrated unit and connected to the remainder so that they can communicate with each other, but here we will explain the carbon dioxide emission calculation system using an example of a carbon dioxide emission calculation device that is all integrated.

[0024] Fig. 2 is a diagram showing a configuration of the carbon dioxide emission calculation system (a carbon dioxide emission calculation device as an example). Fig. 3 is a diagram showing a product manufacturing performance information table, which is one piece of product information, as an example. Fig. 4 is a diagram showing a unit CO2 emission information table as an example.

[0025] A carbon dioxide emission calculation system (a carbon dioxide emission calculation device as an example) 1000 in an embodiment includes, for example, a control processing unit 1, an input unit 2, an output unit 3, an interface unit (IF unit) 4, and a memory unit 5, as shown in FIG. 2.

[0026] The input unit 2 is connected to the control processing unit 1 and is a device that inputs various commands, such as a command to start calculation of CO2 emissions, and various data necessary for operating the carbon dioxide emission calculation device 1000, such as the product manufacturing process and product manufacturing history, to the carbon dioxide emission calculation device 1000, and is, for example, a keyboard, a mouse, or a plurality of input switches to which predetermined functions are assigned. The output unit 3 is connected to the control processing unit 1 and is a device that outputs the commands, data, and calculation results input from the input unit 2 under the control of the control processing unit 1, and is, for example, a display device such as a CRT display, LCD (liquid crystal display device), or organic EL display, or a printing device such as a printer.

[0027] The input unit 2 and the output unit 3 may be configured with a touch panel. In the case of configuring this touch panel, the input unit 2 is, for example, a resistive film type or capacitive type position input device that detects and inputs an operation position, and the output unit 3 is a display device. In this touch panel, a position input device is provided on the display surface of the display device, and one or more input content candidates that can be input to the display device are displayed. When a user touches a display position that displays the input content that the user wants to input, the position is detected by the position input device, and the display content displayed at the detected position is input to the carbon dioxide emission calculation device 1000 as the user's operation input content. In such a touch panel, the user can easily intuitively understand the input operation, and therefore a carbon dioxide emission calculation device 1000 that is easy for the user to handle is provided.

[0028] The IF unit 4 is connected to the control processing unit 1 and is a circuit that inputs and outputs data to and from, for example, an external device under the control of the control processing unit 1, and is, for example, an interface circuit of RS-232C, which is a serial communication method, an interface circuit using the Bluetooth (registered trademark) standard, an interface circuit using the USB standard, etc. The IF unit 4 may also be, for example, a communication interface circuit that transmits and receives communication signals to and from an external device, such as a data communication card or a communication interface circuit conforming to the IEEE802.11 standard, etc.

[0029] The storage unit 5 is connected to the control processing unit 1, and is a circuit that stores various predetermined programs and various predetermined data under the control of the control processing unit 1.

[0030] The various predetermined programs include, for example, a control processing program, and the control processing program includes, for example, a control program, a first emission amount calculation program, a second emission amount calculation program, a total emission amount calculation program, a separated product emission amount calculation program, a compilation calculation program, a unit amount calculation program, an allocation amount calculation program, and a period emission amount calculation program. The control program is a program that controls each of the units 2 to 5 of the carbon dioxide emission calculation device 1000 according to the function of each unit. The first emission amount calculation program is a program that calculates the product raw material CO2 emissions related to the target product from the raw material CO2 emissions of the raw materials. The second emission amount calculation program is a program that calculates the process CO2 emissions related to each of a plurality of processes for manufacturing the target product in each of the processes, and calculates the product process CO2 emissions related to the target product in each of the processes from the calculated process CO2 emissions. The total emission calculation program is a program for calculating the sum of the raw material CO2 emission and each process CO2 emission calculated for each of the multiple processes for producing the target product as total process CO2 emission, and for calculating the sum of the product raw material CO2 emission and each product process CO2 emission calculated for each of the multiple processes for producing the target product as total product CO2 emission. The separated product emission calculation program is a program for calculating separated product CO2 emission related to the separated product by subtracting the calculated total product CO2 emission from the calculated total process CO2 emission. The aggregation calculation program is a program for calculating the sum of each separated product CO2 emission calculated for each of the multiple target products in the specified period when there are multiple target products classified in the same category. The unit amount calculation program is a program for calculating, when there are multiple target products, the amount of separated product in each of the multiple target products, calculating the sum of the separated product amounts calculated for each of the multiple target products as an aggregated separated product amount, and dividing the calculated aggregated separated product CO2 emission amount by the calculated aggregated separated product amount, thereby calculating the unit separated product CO2 emission amount, which is the CO2 emission amount per unit amount related to the separated product.The allocation amount calculation program is a program for allocating the calculated aggregate separated product CO2 emissions to each of the target products so that the allocation amount per unit amount is the same when there are multiple target products. The period emission amount calculation program is a program for calculating the sum of the total product CO2 emissions calculated for each of the target products as an aggregate total product CO2 emissions, calculating the sum of the separated product CO2 allocation amounts allocated by the allocation amount calculation unit for each of the target products as an aggregate separated product CO2 allocation amount, and calculating the sum of the calculated aggregate total product CO2 emissions and the calculated aggregate separated product CO2 allocation amount as a period CO2 emission amount.

[0031] The various types of predetermined data include data necessary for executing each of these programs, such as product information, unit discharge amount information, various intermediate calculation results, and final calculation results.

[0032] Such a storage unit 5 includes, for example, a ROM (Read Only Memory) which is a nonvolatile storage element, an EEPROM (Electrically Erasable Programmable Read Only Memory) which is a rewritable nonvolatile storage element, etc. The storage unit 5 also includes a RAM (Random Access Memory) which serves as a so-called working memory of the control processing unit 1 for storing data generated during execution of the predetermined program, etc. The storage unit 5 may also be configured to include a hard disk device with a relatively large storage capacity.

[0033] The storage unit 5 functionally comprises a product information storage unit 51 and a unit emission amount information storage unit 52 in order to store the product information and the unit emission amount information, respectively.

[0034] The product information storage unit 51 stores product information. The product information is information about a product, and includes, for example, raw material information about raw materials used to manufacture the product, manufacturing process information about a plurality of processes used to manufacture the product, and product manufacturing performance information about products manufactured during a predetermined period.

[0035] The raw material information includes the raw material name (name of raw material) used to manufacture a product with a product name (name of product), and unit raw material CO2 emission, which is the CO2 emission per unit amount of the raw material with the raw material name, and these are stored in the product information storage unit 51 in association with the product name. The unit raw material CO2 emission is the emission of carbon dioxide emitted in relation to the raw material, for example, the CO2 emission emitted in the production of the raw material. In this embodiment, the raw material is regarded as one of the processes, and the unit raw material CO2 emission is stored in the unit emission information storage unit 52, as described below.

[0036] The manufacturing process information is information describing a plurality of processes for manufacturing a product having a product name in the order of processes, and the plurality of processes described in the order of processes are associated with the product name and stored in the product information storage unit 51. The process is represented by a process name, which is the name of the process.

[0037] The product manufacturing performance information includes the production volume (product volume, actual production volume, actual product volume) of the product of the product name produced in a predetermined period, and the production volume is stored in the product information storage unit 51 in association with the product name. The predetermined period is arbitrary and is appropriately set in advance, for example, to three months, six months (half a year), one year, etc. In this embodiment, the product manufacturing performance information is stored in the product information storage unit 51 in a table format. As shown in FIG. 3, the product manufacturing performance information table 100 for registering the product manufacturing performance information includes a product name field 101 for registering the product name, a type name field 102 for registering the type name which is the name of the type (product type) of the product of the product name registered in the product name field 101, a consumer name field 103 for registering the consumer name which is the name of the consumer of the product of the product name registered in the product name field 101, and a production volume field 104 for registering the production volume [ton] of the product of the product name registered in the product name field 101, and has a record for each product name. In this embodiment, the target products are classified and tabulated by product type, so that the product manufacturing performance information table 100 is provided with a type name field 102. In this embodiment, as described above, the product is a rolled steel plate, which is an example of a metal product, and the type (product type) of the rolled steel plate is classified, for example, by its composition. For this reason, the target product is, for example, a metal product, and is classified by its composition (in other words, by its type name (name of type) in this example). As described later, as a modified example, the target products may be classified and tabulated by customer name, so that the product manufacturing performance information table 100 is provided with a customer name field 103. The product manufacturing performance information also includes the amount of each processed material (for example, processed material weight, processed material volume, processing time, etc.) of each processed material in each process when the product of the production amount (product amount) is produced during the specified period, as shown in Figs. 6 to 8 as calculation examples.

[0038] The unit emission amount information storage section 52 stores unit emission amount information. The unit emission amount information is the CO2 emission amount emitted in the implementation of the process, and in this embodiment, it is expressed, for example, as unit CO2 emission amount which is the CO2 emission amount per unit amount. In this embodiment, the unit amount is the weight of the processing object (processing object, (processing object) = (main body) + (separated object)) processed in the implementation of the process, but is not limited thereto, and may be, for example, the volume of the processing object, or may be the processing time required for the implementation of the process.

[0039] In this embodiment, the unit emission information is stored in the unit emission information storage unit 52 in table format. The unit emission information table 200 for registering the unit emission information includes, for example, a process name field 201 for registering a process name, and a unit CO2 emission field 202 for registering a unit CO2 emission (unit process CO2 emission) [tCO2 / ton] in the process of the process name registered in the process name field 201, as shown in FIG. 4, and has a record for each process name. In this embodiment, as described above, since raw materials are considered to be one of the processes, unit raw material CO2 emission is registered in the unit emission information table 200. In this embodiment, although shipment is not directly related to the manufacture of the product, shipment is also included in one of the processes, and the unit CO2 emission of shipment (unit shipment CO2 emission) is registered in the unit emission information table 200 as unit process CO2 emission. It is not necessary for shipment to be included in one of the processes.

[0040] The control processing unit 1 is a circuit for controlling each of the units 2 to 5 of the carbon dioxide emission calculation device 1000 according to the function of each unit, and for determining the CO2 emission amount for a target product manufactured in a predetermined period. The control processing unit 1 is configured to include, for example, a CPU (Central Processing Unit) and its peripheral circuits. In the control processing unit 1, a control unit 11, a first emission amount calculation unit 12, a second emission amount calculation unit 13, a total emission amount calculation unit 14, a separated product emission amount calculation unit 15, a tallying calculation unit 16, a unit amount calculation unit 17, an allocation amount calculation unit 18, and a period emission amount calculation unit 19 are functionally configured by executing the control processing program.

[0041] The control unit 11 controls each of the units 2 to 5 of the carbon dioxide emission calculation device 1000 in accordance with the function of each unit, and is responsible for controlling the carbon dioxide emission calculation device 1000 as a whole.

[0042] The first emission calculation unit 12 calculates the raw material CO2 emission amount of the product related to the target product, out of the raw material CO2 emission amounts of the raw materials.

[0043] The second emission calculation unit 13 calculates, for each of a plurality of processes for manufacturing the target product, the process CO2 emissions associated with that process, and calculates the product process CO2 emissions associated with the target product at that process from the calculated process CO2 emissions.

[0044] The total emission calculation unit 14 calculates the sum of the raw material CO2 emission amount and the individual process CO2 emission amount calculated for each of the multiple processes for manufacturing the target product as the total process CO2 emission amount, and calculates the sum of the product raw material CO2 emission amount and the individual product process CO2 emission amount calculated for each of the multiple processes for manufacturing the target product as the total product CO2 emission amount.

[0045] The separated product emission amount calculation unit 15 calculates the separated product CO2 emission amount relating to the separated product by subtracting the calculated total product CO2 emission amount from the calculated total process CO2 emission amount.

[0046] When there are multiple target products, the first emission calculation unit 12 calculates the product raw material CO2 emission amount for each of the multiple target products, the second emission calculation unit 13 calculates the product process CO2 emission amount for each of the multiple target products, the total emission calculation unit 14 calculates the total product CO2 emission amount for each of the multiple target products, and the separated product emission calculation unit 15 calculates the separated product CO2 emission amount for each of the multiple target products.

[0047] When there are multiple target products classified in the same manner during the predetermined period, the tabulation calculation unit 16 calculates the sum of the separated CO2 emissions calculated for each of the multiple target products as the aggregated separated CO2 emissions. As described above, in this embodiment, the target products are metal products and are classified by their component composition. Note that the classification method is not limited to this, and an appropriate classification method depending on the target products may be used. For example, the target products may be classified by consumer name, as described later as a modified form.

[0048] When there are multiple target products, the unit amount calculation unit 17 calculates the separated product amount (yield loss amount, yield loss amount, for example, separated product weight (yield loss weight) or separated product volume (yield loss volume)) of the separated product for each of the multiple target products by subtracting the product amount (e.g., product weight or product volume) of the target product from the raw material amount (e.g., raw material weight or raw material volume) of the target product, calculates the sum of the separated product amounts (yield loss amounts) calculated for each of the multiple target products as an aggregated separated product amount (aggregated yield loss amount), and calculates the unit separated product CO2 emission, which is the CO2 emission per unit amount related to the separated product, by dividing the calculated aggregated separated product amount (aggregated yield loss amount). Yield is generally the ratio of the amount of finished product to the amount of raw materials input, while yield loss is the opposite of yield and is the ratio of the amount of loss that occurs from raw materials to the amount of product input.

[0049] When there are multiple target products, the allocation amount calculation unit 18 allocates the calculated aggregate separated product CO2 emissions to each of the multiple target products so that the allocation amount per unit amount is the same. More specifically, the allocation amount calculation unit 18 allocates the calculated aggregate separated product CO2 emissions to each of the multiple target products based on the product volume ratio in the target product. More specifically, the allocation amount calculation unit 18 allocates the calculated aggregate separated product CO2 emissions to each of the multiple target products by multiplying the calculated aggregate separated product CO2 emissions by the product volume ratio in the target product to calculate a separated product CO2 allocation amount, which is the CO2 emissions to be allocated to the target product, out of the calculated aggregate separated product CO2 emissions, for each of the multiple target products.

[0050] In this embodiment, the unit amount calculation unit 17 further calculates, for each of the multiple target products, the unit separated CO2 allocation amount, which is the CO2 allocation amount per unit amount in the target product, by dividing the calculated separated CO2 allocation amount of the target product by the product amount of the target product.

[0051] When there are multiple target products, the period emission amount calculation unit 19 calculates the sum of the total product CO2 emissions calculated for each of the multiple target products as an aggregated total product CO2 emission amount, calculates the sum of the separated product CO2 allocation amounts allocated by the allocation amount calculation unit for each of the multiple target products as an aggregated separated product CO2 allocation amount, and calculates the sum of the calculated aggregated total product CO2 emission amount and the calculated aggregated separated product CO2 allocation amount as the period CO2 emission amount.

[0052] The control processing unit 1, input unit 2, output unit 3, IF unit 4 and storage unit 5 in the carbon dioxide emission calculation device 1000 as an example of a carbon dioxide emission calculation system can be configured by, for example, a desktop computer, a notebook computer, etc. Of course, as described above, the carbon dioxide emission calculation system may be configured by a plurality of computers connected to each other so as to be able to communicate with each other.

[0053] Next, the operation of this embodiment will be described. FIG. 5 is a flowchart showing the operation of the carbon dioxide emission calculation system. FIG. 6 is a diagram for explaining, as an example, a method for calculating process CO2 emission for each of the product name "P001" and the product name "P002". FIG. 7 is a diagram for explaining, as an example, a method for calculating process CO2 emission for each of the product name "P003" and the product name "P004". FIG. 8 is a diagram for explaining, as an example, a method for calculating process CO2 emission for each of the product name "P005" and the product name "P006". FIG. 9 is a diagram for explaining, as an example, a method for calculating product process CO2 emission, total process CO2 emission, total product CO2 emission, and separated CO2 emission for each of the product name "P001" and the product name "P002". FIG. 10 is a diagram for explaining, as an example, a method for calculating the product process CO2 emissions, total process CO2 emissions, total product CO2 emissions, and separated CO2 emissions for a product named "P003" and a product named "P004". FIG. 11 is a diagram for explaining, as an example, a method for calculating the product process CO2 emissions, total process CO2 emissions, total product CO2 emissions, and separated CO2 emissions for a product named "P005" and a product named "P006". In FIG. 6 and FIG. 9, FIG. A shows the case of a product named "P001", and FIG. B shows the case of a product named "P001". In FIG. 7 and FIG. 10, FIG. A shows the case of a product named "P003", and FIG. B shows the case of a product named "P004". In Fig. 8 and Fig. 11, Fig. A shows the case of a product with the product name "P005", and Fig. B shows the case of a product with the product name "P006". Fig. 12 is a diagram showing, as an example, a list of the separated CO2 emissions for each product with the product names "P001" to "P006". Fig. 13 is a diagram for explaining, as an example, a method of calculating the aggregate separated CO2 emissions and the unit aggregate separated CO2 emissions when products are classified by product name. Fig. 14 is a diagram for explaining, as an example, a method of calculating the separated CO2 allocation amount and the unit separated CO2 allocation amount for each product name when products are classified by type name.Fig. 15 is a diagram for explaining a method of calculating the periodic CO2 emission amount for each product name when products are classified by type name, as an example. Fig. 15A shows the periodic CO2 emission amount based on the total product CO2 emission amount and the CO2 allocation amount for each separated product for each product, and Fig. 15B shows the periodic CO2 emission amount based on the total process CO2 allocation amount for each product.

[0054] When the carbon dioxide emission calculation device 1000 configured as described above is powered on, it initializes the necessary parts and starts its operation. By executing the control processing program, the control processing unit 1 functionally configures a control unit 11, a first emission amount calculation unit 12, a second emission amount calculation unit 13, a total emission amount calculation unit 14, a separated product emission amount calculation unit 15, a tallying calculation unit 16, a unit amount calculation unit 17, an allocation amount calculation unit 18 and a period emission amount calculation unit 19.

[0055] For example, when an operator (user) issues an instruction to start calculation from the input unit 2, the carbon dioxide emission calculation device 1000 uses the first emission calculation unit 12 of the control processing unit 1 to calculate the product raw material CO2 emission amount related to the target product among the raw material CO2 emission amount of the raw material in the target product (S1). More specifically, the first emission calculation unit 12 calculates the product raw material CO2 emission amount by multiplying the raw material CO2 emission amount of the raw material by the ratio (ratio) of the product amount to the raw material amount of the raw material ((product raw material CO2 emission amount)=(raw material CO2 emission amount)×(product amount) / (raw material amount of the raw material)). Alternatively, the first emission calculation unit 12 calculates the product raw material CO2 emission amount by multiplying the product amount by the unit raw material CO2 emission amount ((product raw material CO2 emission amount)=(product amount)×(unit raw material CO2 emission amount)). The raw material CO2 emission amount is calculated by multiplying the raw material amount of the raw material by the unit raw material CO2 emission amount.

[0056] Here, the operation will be specifically described for a case where there are multiple target products, more specifically, a case where there are multiple target products classified in the same category. More specifically, the product information storage unit 51 stores the product manufacturing performance information table 100 shown in FIG. 3 as one of the product manufacturing performance information, and the raw materials in each product are associated with the product name by raw material name and stored as the raw material information, and stores another one of the manufacturing process information and the product manufacturing performance information as shown in FIG. 6 to FIG. 8 as process order, process name, and weight. The weight of a process is the weight of the processed material processed in the implementation of this process, and the weight difference with the next process is the weight of the separated material in this process. For example, a product with a product name "P001" goes through each of the processes of the first process name "raw material", the second process name "melting and casting", the third process name "rolling 1", the fourth process name "rolling 2", the fifth process name "heat treatment", the sixth process name "cutting", and the seventh process name "shipping". The weights in each of the first to seventh steps are 26 tons, 26 tons, 24 tons, 22 tons, 22 tons, 20 tons, and 20 tons, respectively. For example, in the second step, the weight of the processed product in the second step is 26 tons, and the weight of the processed product in the next third step is 24 tons, so the weight of the separated product in the second step is the difference, 2 tons. There is no weight difference between the fourth step and the next fifth step, so there is no separated product in the fourth step. In the unit discharge amount information storage unit 52, the unit discharge amount information table 200 shown in FIG. 4 is stored as the unit discharge amount information.

[0057] In each of Figures 6 to 8, in the record for the first process of the process name "raw materials", the raw material CO2 emission calculated by multiplying the weight of the first process by the unit raw material CO2 emission of the raw material of the process name "raw materials" is entered in the process emission column. For example, in Figure 6A, in the record for the first process of the process name "raw materials", the raw material CO2 emission of "104" (=26 x 4) [tCO2] obtained by multiplying the weight of the first process "26" [tons] by the unit raw material CO2 emission of "4" [tCO2 / ton] is entered in the process emission column.

[0058] In such an example, in each of Figures 9 to 11, in the record for the first process of the process name "raw material", the product raw material CO2 emission amount "80" [tons] (=104 x (20 / 26)) is entered in the product process emission amount column in the record for the first process of the process name "raw material". For example, in Figure 9A, in the record for the first process of the process name "raw material", the product raw material CO2 emission amount "80" [tons] (=104 x (20 / 26)) is entered in the product process emission amount column, which is calculated by multiplying the raw material CO2 emission amount "104" [tCO2] by the ratio (ratio) of the product amount "20" [tons] to the raw material amount of the raw material "26" [tons]. The product raw material CO2 emission amount "80" [tons] (=20 x 4) may be calculated by multiplying the product amount "20" [tons] by the unit raw material CO2 emission amount "4" [tCO2 / ton].

[0059] Next, the carbon dioxide emission calculation device 1000, by using the second emission calculation unit 13 of the control processing unit 1, calculates the process CO2 emission amount related to each of the multiple processes for manufacturing the target product, and calculates the product process CO2 emission amount related to the target product in each of the multiple processes for manufacturing the target product by multiplying the processing amount of the processed material in each of the multiple processes by the unit process CO2 emission amount in each of the multiple processes for manufacturing the target product. Then, the second emission calculation unit 13 calculates the product process CO2 emission amount by multiplying the process CO2 emission amount of the process by the ratio (ratio) of the product amount to the processing amount of the processed material in each of the multiple processes for manufacturing the target product ((product process CO2 emission amount)=(process CO2 emission amount)×(product amount) / (process amount)). Alternatively, the second emission calculation unit 13 obtains the amount of CO2 emission in the production process by multiplying the production amount of the product by the amount of CO2 emission in the unit process ((CO2 emission in the production process)=(product amount of the product)×(CO2 emission in the unit process)).

[0060] In the above example, in each of the records in the second to seventh processes in each of Figs. 9 to 11, the CO2 emissions of each process are described in the column of each process emissions, and the CO2 emissions of each product process are described in the column of each product process emissions. For example, in Fig. 9A, the record in the second process of the process name "melting and casting" describes in the column of process emissions the process CO2 emissions of "39" [tons] (=26 x 1.5) calculated by multiplying the weight of the processed material in the second process "26" [tons] by the unit process CO2 emissions of "1.5" [tons]. And, in the record in the second process of the process name "melting and casting", the product process CO2 emissions of "30" [tons] (=39 x (20 / 26)) calculated by multiplying the process CO2 emissions of "39" [tCO2] of the second process by the ratio (ratio) of the product weight of "20" [tons] to the processed material weight of "26" [tons] in the second process are described in the column of product process emissions. The product process CO2 emissions of "30" [tons] (=20×1.5) may be obtained by multiplying the product amount of the product "20" [tons] by the unit process CO2 emissions of "1.5" [tCO2 / ton].

[0061] Next, the carbon dioxide emission calculation device 1000, via the total emission calculation unit 14 of the control processing unit 1, calculates the sum of the raw material CO2 emission amount and the CO2 emission amount for each of the multiple processes for manufacturing the target product as the total process CO2 emission amount (S3).

[0062] In the above example, the total process CO2 emissions are listed in the column for total process emissions in each of Figures 9 to 11. For example, the column for total process emissions in Figure 9 lists the total process CO2 emissions, which is the sum of the raw material CO2 emissions of "104" [tCO2] and the process CO2 emissions of "39" [tCO2], "19.2" [tCO2], "13.2" [tCO2], "22" [tCO2], "4" [tCO2], and "1" [tCO2] calculated for each of the second to seventh steps for manufacturing a product (target product) with the product name "P001", as "202.4" [tCO2].

[0063] Next, the carbon dioxide emission calculation device 1000 calculates, via the total emission calculation unit 14, the sum of the product raw material CO2 emission and the product process CO2 emission calculated for each of the multiple processes for manufacturing the target product as the total product CO2 emission (S4).

[0064] In the above example, the total product CO2 emissions are entered in the column for the total product process emissions in each of Figures 9 to 11. For example, the column for the total product process emissions in Figure 9 enters the sum of the product raw material CO2 emissions of "80" [tCO2] and the product process CO2 emissions of "30" [tCO2], "16" [tCO2], "12" [tCO2], "20" [tCO2], "4" [tCO2], and "1" [tCO2] calculated for each of the second to seventh steps for manufacturing the product (target product) with the product name "P001", resulting in a total product CO2 emissions of "163" [tCO2].

[0065] Next, the carbon dioxide emission calculation device 1000 calculates the separated product CO2 emission amount related to the separated product by subtracting the total product CO2 emission amount determined in the process S4 from the total process CO2 emission amount determined in the process S3 using the separated product emission calculation unit 15 of the control processing unit 1 (S5).

[0066] In the above example, the total separated product CO2 emissions are recorded in the separated product emissions column in each of Figures 9 to 11. For example, the separated product emissions column in Figure 9 records the separated product CO2 emissions of "39.4" [tCO2] (=202.4-163) calculated by subtracting the total product CO2 emissions of "163" [tCO2] from the total process CO2 emissions of "202.4" [tCO2] for the product with the product name "P001".

[0067] Next, the carbon dioxide emission calculation device 1000 judges whether or not each calculation in steps S1 to S5 has been performed for all target products by the control processing unit 1 (S6). If the result of this judgment is that each calculation has not been performed for all target products (No), the carbon dioxide emission calculation device 1000 returns the process to step S1 to perform the calculations for the target products that have not been performed. On the other hand, if the result of the judgment is that each calculation has been performed for all target products (Yes), the carbon dioxide emission calculation device 1000 next executes step S7.

[0068] In the above example, the calculations of steps S1 to S5 are performed for each product, namely, product name "P001", product name "P002", product name "P003", product name "P004", product name "P005", and product name "P006", and the calculation results shown in Figures 9 and 11 are obtained.

[0069] In process S7, when there are multiple target products that are classified as the same, the carbon dioxide emission calculation device 1000 calculates the sum of the separated CO2 emissions calculated for each of the multiple target products by the aggregation calculation unit 16 of the control processing unit 1 as the aggregated separated CO2 emission amount.

[0070] Figure 12, based on Figures 3 and 6 to 11, lists the product name, type name, customer name, amount of separated product (yield loss), and CO2 emissions from the separated product for each product. The amount of separated product (yield loss) is calculated by subtracting the product amount from the raw material amount of the product. For example, the amount of separated product (yield loss) for product "P001" is calculated as "6" [tons] by subtracting the product amount of the product "20" [tons] from the raw material amount of the raw material "26" [tons]. In this embodiment, as described above, the target products are classified by component composition, here by type name, so in the above example, the tabulation calculation unit 16 calculates the sum of the separated CO2 emissions of each product with the type name "H1" (39.4 tCO2), "63.6 tCO2", and "65 tCO2) (168 tCO2) (=39.4+63.6+65) as the aggregate separated CO2 emission of the product with the type name "H1", and the tabulation calculation unit 16 calculates the sum of the separated CO2 emissions of each product with the type name "H2" (23.4 tCO2), "64 tCO2", and "60 tCO2) (147.4 tCO2) (=23.4+64+60) as the aggregate separated CO2 emission of the product with the type name "H2". The calculation result is shown in FIG. 13. FIG. 13 shows a table with columns for type name, weight of separated product [ton], aggregate separated product CO2 emissions [tCO2], and unit separated product CO2 emissions [tCO2 / ton], and lists the type name, weight of each separated product, CO2 emissions of each separated product, and CO2 emissions of each unit separated product for each type.

[0071] Next, the carbon dioxide emission calculation device 1000, by using the unit amount calculation unit 17 of the control processing unit 1, calculates the separated product amount (yield drop amount) of the separated product in each of the multiple target products classified as the same by subtracting the product amount of the target product from the raw material amount of the target product, calculates the sum of the separated product amounts (yield drop amount) calculated for each of the multiple target products as the aggregated separated product amount (aggregated yield drop amount), and calculates the unit separated product CO2 emission, which is the CO2 emission amount per unit amount related to the separated product, by dividing the calculated aggregated separated product amount (aggregated yield drop amount) (S8).

[0072] In the above example, the unit amount calculation unit 17 calculates the aggregate separated amount of the type name "H1" by calculating the sum of the respective separated amounts of "6" [tons] (=26-20), "10" [tons] (=30-20), and "10" [tons] (=20-10) of each product with the type name "H1", namely "26" [tons] (=6+10+10), and calculates the unit separated amount CO2 emission of "6.46" [tCO2 / ton] for the type name "H1" by dividing the aggregate separated amount CO2 emission of "168" [tCO2] for the type name "H1" by the aggregate separated amount of "26" [tons] for this type name "H1". The unit amount calculation unit 17 calculates the total separated amount of the type name "H2" by dividing the total separated amount of the type name "H2" "147.4" [tCO2] by the total separated amount of the type name "H2" "24" [tCO2]. The calculation result is also shown in FIG. 13. The unit separated amount of the type name "H2" CO2 emission is rounded off to two decimal places and expressed to two decimal places.

[0073] Next, the carbon dioxide emission calculation device 1000 allocates the calculated aggregate separated product CO2 emission amount to each of the plurality of target products classified in the same manner, so that the allocation amount per unit amount is the same, by the allocation amount calculation unit 18 of the control processing unit 1 (S9). More specifically, the allocation amount calculation unit 18 allocates the calculated aggregate separated product CO2 emission amount to each of the plurality of target products classified in the same manner, based on the product amount ratio in the target product. More specifically, the allocation amount calculation unit 18 allocates the calculated aggregate separated product CO2 emission amount to each of the plurality of target products classified in the same manner, by multiplying the calculated aggregate separated product CO2 emission amount by the product amount ratio in the target product.

[0074] In the above example, the allocation amount calculation unit 18 calculates the total product amount of "50" [tons] (=20+20+10) for each product of type name "H1", and calculates, for example, the separated product CO2 allocation amount of the product name "P001", which is the CO2 emission amount of the separated product allocated to the product name "P001", as "67.2" [tCO2] (=168×0.4) by multiplying the aggregate separated product CO2 emission amount of the type name "H1" of "168" [tCO2] by the ratio of the product amount of the product name "P001" of "0.4" (=20 / 50). The allocation amount calculation unit 18 calculates the total product amount "64" [tons] (=16+18+30) for each product of the type name "H2", and calculates the separated CO2 allocation amount of the product name "P004" as "36.85" [tCO2] (=147.4×0.25) by multiplying the total separated CO2 emission amount "147.4" [tCO2] of the type name "H2" by the ratio of the product amount of the product name "P004" "0.25" (=16 / 64). The calculation result is shown in FIG. 14. FIG. 14 shows a list with columns for type name, product name, product weight [ton], separated CO2 allocation amount [tCO2], and unit separated CO2 allocation amount [tCO2 / ton], and lists each type name, each product name, each product weight, each separated CO2 allocation amount, and each unit separated CO2 allocation amount for each product. The unit separated CO2 allocation amount shown in FIG. 14 is rounded off to two decimal places and expressed to two decimal places.

[0075] Next, the carbon dioxide emission calculation device 1000 calculates the unit separated CO2 allocation amount for each of the multiple target products classified as the same, by dividing the calculated separated CO2 allocation amount for that target product by the product amount of that target product, using the unit amount calculation unit 17 of the control processing unit 1 (S10).

[0076] In the above example, the unit amount calculation unit 17 obtains a unit separated CO2 allocation amount of "3.36" [tCO2 / ton] (=7.2 / 20) by dividing the separated CO2 allocation amount of "67.2" [tCO2] of the product name "P001" by the product amount of the target product "20" [ton]. Alternatively, for example, the unit amount calculation unit 17 obtains a unit separated CO2 allocation amount of "2.3" [tCO2 / ton] (=7.2 / 20) by dividing the separated CO2 allocation amount of "36.85" [tCO2] of the product name "P004" by the product amount of the target product "16" [ton]. This calculation result is also shown in FIG. 14. Note that the unit separated CO2 allocation amount shown in FIG. 14 is rounded off to two decimal places and expressed to two decimal places.

[0077] Next, in the case where there are multiple target products, the carbon dioxide emission calculation device 1000, using the period emission calculation unit 19 of the control processing unit 1, calculates the sum of the total product CO2 emissions calculated for each of the multiple target products as an aggregated total product CO2 emission, calculates the sum of the separated product CO2 allocation amounts allocated by the allocation amount calculation unit 18 for each of the multiple target products as an aggregated separated product CO2 allocation amount, and calculates the sum of the calculated aggregated total product CO2 emission and the calculated aggregated separated product CO2 allocation amount as the period CO2 emission (S11).

[0078] In the above example, the period emission calculation unit 19 first calculates the aggregated total product CO2 emission amount "949.9" [tCO2] (= 163 + 163 + 88.5 + 135.2 + 146.7 + 253.5) as the sum of the total product CO2 emissions "163" [tCO2], "163" [tCO2], "88.5" [tCO2], "135.2" [tCO2], "146.7" [tCO2], and "253.5" [tCO2] calculated for each of the products with product names "P001" to "P006". Next, the period emission amount calculation unit 19 calculates the sum of the separated CO2 allocation amounts "67.2" [tCO2], "67.2" [tCO2], "33.6" [tCO2], "36.85" [tCO2], "41.46" [tCO2], and "69.09" [tCO2] for each product with the product names "P001" to "P006", "315.4" [tCO2] (=67.2+67.2+33.6+36.85+41.46+69.09) as the aggregate separated CO2 allocation amount. Then, the period emission amount calculation unit 19 calculates the sum of these "1265.3" [tCO2] (=949.9+315.4) as the period CO2 emission amount. The calculation result is shown in FIG. 15A. FIG. 15A shows a table with columns for product name, total product CO2 emissions [tCO2], separated CO2 allocation [tCO2], and total CO2 emissions [tCO2], and lists the product name, total product CO2 emissions, separated CO2 allocation, and total CO2 emissions for each product. The total CO2 emissions is the sum of the total product CO2 emissions and separated CO2 allocation for the target product. The aggregated total product CO2 emissions are listed in the column for total total product CO2 emissions, the aggregated separated CO2 allocation is listed in the column for total separated CO2 allocation, and the period CO2 emissions are listed in the column for total total CO2 emissions. In addition, Figure 15B lists the period CO2 emissions of "1265.3" [tCO2] (=202.4+226.6+153.5+158.6+210.7+313.5), calculated from the sum of the total process CO2 emissions of "202.4" [tCO2], "226.6" [tCO2], "153.5" [tCO2], "158.6" [tCO2], "210.7" [tCO2], and "313.5" [tCO2] for each of the products with product names "P001" to "P006".Of course, the period CO2 emission amount "1265.3" [tCO2] is consistent between FIG. 15A and FIG. 15B.

[0079] Then, the carbon dioxide emission calculation device 1000 causes the control unit 11 of the control processing unit 1 to output each calculation result, such as product raw material CO2 emission, process CO2 emission, product process CO2 emission, total process CO2 emission, total product CO2 emission, separated product CO2 emission, aggregate separated product CO2 emission, unit separated product CO2 emission, separated product CO2 allocation amount, unit separated product CO2 allocation amount, and period CO2 emission, to the output unit 3 (S12), and ends this process. Note that the control unit 11 may output each calculation result to an external device via the IF unit 4 as necessary.

[0080] As described above, the carbon dioxide emission calculation system (one example of a carbon dioxide emission calculation device) 1000 in an embodiment, and the carbon dioxide emission calculation method and carbon dioxide emission calculation program implemented therein, calculate the separated CO2 emissions of the target product that did not constitute the target product after the final process by subtracting the total product CO2 emissions related to the target product after the final process from the total process CO2 emissions when manufacturing the target product, so that even if separated products are generated, it is possible to calculate CO2 emissions (for example, the total product CO2 emissions and separated CO2 emissions, etc.).

[0081] The carbon dioxide emission calculation system (carbon dioxide emission calculation device) 1000, carbon dioxide emission calculation method, and carbon dioxide emission calculation program can, when there are multiple target products classified in the same way, calculate an aggregated separated CO2 emission by aggregating the CO2 emission of each separated product of each of the multiple target products.

[0082] The carbon dioxide emission amount calculation system (carbon dioxide emission amount calculation device) 1000, the carbon dioxide emission amount calculation method, and the carbon dioxide emission amount calculation program can equally allocate the aggregated separated CO2 emission amount to each of a plurality of target products.

[0083] The carbon dioxide emission calculation system (carbon dioxide emission calculation device) 1000, the carbon dioxide emission calculation method, and the carbon dioxide emission calculation program can obtain the amount of CO2 emission for a predetermined period in the factory.

[0084] In the above description, the target products are classified by their component compositions, but as described above, the classification method is not limited to this, and any appropriate classification method may be used depending on the target products. As another example, a case where the target products are classified by customer names will be described (variant form).

[0085] Fig. 16 is a diagram for explaining a method for calculating the aggregate separated CO2 emissions when products are classified by customer name, as an example. Fig. 17 is a diagram for explaining a method for calculating the separated CO2 allocation amount and the unit separated CO2 allocation amount when products are classified by customer name, as an example. Fig. 18 is a diagram for explaining a method for calculating the period CO2 emissions for each product name when products are classified by customer name, as an example.

[0086] In this case, in the above-mentioned process S7, the aggregation calculation unit 16 calculates the sum of the separated CO2 emissions of "39.4" [tCO2] and "23.4" [tCO2] for each product of the consumer name "U1" as "62.8" [tCO2] (= 39.4 + 23.4) as the aggregated separated CO2 emissions for the consumer name "U1". The tabulation calculation unit 16 obtains the sum of the separated CO2 emissions of each product of the consumer name "U2" (63.6 tCO2) and "64 tCO2), 127.6 tCO2 (=63.6+64), as the aggregate separated CO2 emission of the consumer name "U2". The tabulation calculation unit 16 obtains the sum of the separated CO2 emissions of each product of the consumer name "U3" (65 tCO2) and "60 tCO2), 125 tCO2 (=65+60), as the aggregate separated CO2 emission of the consumer name "U3". The calculation result is shown in FIG. 16. FIG. 16 shows a table with columns for consumer name, separated weight [ton], and aggregate separated CO2 emission [tCO2], and lists the type name, separated weight, and separated CO2 emission of each type.

[0087] In process S8, the unit amount calculation unit 17 calculates the aggregate separated amount for the consumer name "U1" as the sum of the respective separated amounts of "6" [tons] and "4" [tons] for each product of the consumer name "U1", which is "10" [tons] (=6+4), and calculates the unit separated amount CO2 emission of "6.28" [tCO2 / ton] for the consumer name "U1" by dividing the aggregate separated amount CO2 emission of "62.8" [tCO2] for the consumer name "U1" by the aggregate separated amount of "10" [tons] for this consumer name "U1". The unit amount calculation unit 17 calculates the aggregate separated amount for the consumer name "U2" as the sum of "10" [tons] and "10" [tons] of each separated amount for each product of the consumer name "U2", which is "20" [tons] (=10 + 10), and calculates the unit separated amount CO2 emission of "6.38" [tCO2 / ton] for the consumer name "U2" by dividing the aggregate separated amount CO2 emission of "127.6" [tCO2] for the consumer name "U2" by the aggregate separated amount of "20" [tons] for this consumer name "U2". Then, the unit amount calculation unit 17 calculates the aggregate separated amount for the consumer name "U3" as the sum of "10" [tons] and "10" [tons] of each separated amount for each product of the consumer name "U3", which is "20" [tons] (=10 + 10), and calculates the unit separated amount CO2 emission of "6.25" [tCO2 / ton] for the consumer name "U2" by dividing the aggregate separated amount CO2 emission of "125" [tCO2] for the consumer name "U3" by the aggregate separated amount of "20" [tons] for this consumer name "U3".

[0088] In process S9, the allocation amount calculation unit 18 calculates the total product amount of "36" [tons] (=20+16) for each product of the consumer name "U1", and calculates, for example, the separated product CO2 allocation amount of the product name "P001", which is the separated product CO2 emission amount allocated to the product name "P001", by multiplying the aggregate separated product CO2 emission amount of the consumer name "U1" of "62.8" [tCO2] by the product amount ratio of the product name "P001", "20 / 36", as "34.89" [tCO2] (≒62.8 x (20 / 36), rounded to three decimal places). The allocation amount calculation unit 18 calculates the total product amount of "38" [tons] (=20+18) for each product of the consumer name "U2", and calculates, for example, the separated product CO2 allocation amount of the product name "P002", which is the separated product CO2 emission amount allocated to the product name "P002", as "67.16" [tCO2] (≒127.6 × (20 / 38), rounded to three decimal places) by multiplying the aggregate separated product CO2 emission amount of the consumer name "U2" of "127.6" [tCO2] by the product amount ratio of the product name "P002", "20 / 38". The allocation amount calculation unit 18 calculates the total product amount "40" [tons] (=10+30) for each product of the consumer name "U3", and calculates the separated CO2 allocation amount of the product name "P003", which is the separated CO2 emission amount allocated to the product name "P003", by multiplying the aggregate separated CO2 emission amount "125" [tCO2] of the consumer name "U3" by the product amount ratio of the product name "P003", "10 / 40", to "31.25" [tCO2] (=125×(10 / 46)). The calculation result is shown in FIG. 17. Figure 17 shows a table with columns for consumer name, product name, product weight [ton], separated CO2 allocation amount [tCO2] and unit separated CO2 allocation amount [tCO2 / ton], and lists the type name, product name, product weight, separated CO2 allocation amount and unit separated CO2 allocation amount for each product.

[0089] In the process S10, the unit amount calculation unit 17 obtains a unit separated CO2 allocation amount of "1.74" [tCO2 / ton] (≒34.89 / 20, rounded off to the third decimal place) by dividing the separated CO2 allocation amount of "34.89" [tCO2] of the product name "P001" by the product amount of the target product "20" [ton]. Alternatively, the unit amount calculation unit 17 obtains a unit separated CO2 allocation amount of "3.36" [tCO2 / ton] (≒60.44 / 18, rounded off to the third decimal place) by dividing the separated CO2 allocation amount of "60.44" [tCO2] of the product name "P005" by the product amount of the target product "18" [ton]. Alternatively, for example, the unit amount calculation unit 17 divides the separated CO2 allocation amount "31.25" [tCO2] of the product name "P003" by the product amount "10" [ton] of the target product to obtain a unit separated CO2 allocation amount "3.13" [tCO2 / ton] (≒61.25 / 10, rounded off to two decimal places). This calculation result is also shown in FIG. 17.

[0090] In the process S11, the period emission calculation unit 19 first calculates the sum of the total product CO2 emissions calculated for each of the products with the product names "P001" to "P006", namely "949.9" [tCO2] (=163+163+88.5+135.2+146.7+253.5), as the aggregated total product CO2 emissions. Next, the period emission amount calculation unit 19 calculates the sum of the separated CO2 allocation amounts "34.89" [tCO2], "67.16" [tCO2], "31.25" [tCO2], "27.91" [tCO2], "60.44" [tCO2], and "93.75" [tCO2] calculated for each product with the product names "P001" to "P006", "315.4" [tCO2] (=34.89+67.16+31.25+27.91+60.44+93.75) as the aggregate separated CO2 allocation amount. Then, the period emission amount calculation unit 19 calculates the sum of these "1265.3" [tCO2] (=949.9+315.4) as the period CO2 emission amount. The calculation result is shown in FIG. 18. 18 shows a table with columns for product name, total product CO2 emissions [tCO2], separated CO2 allocation [tCO2], and total CO2 emissions [tCO2], and lists the product name, total product CO2 emissions, separated CO2 allocation, and total CO2 emissions for each product. The aggregated total product CO2 emissions are listed in the column for total total product CO2 emissions, the aggregated separated CO2 allocation amount is listed in the column for total separated CO2 allocation amount, and the period CO2 emissions are listed in the column for total total CO2 emissions.

[0091] In the above embodiment, the CO2 emissions are calculated based on the product manufacturing results of the products manufactured in a predetermined period, but the CO2 emissions may be calculated based on a product manufacturing plan that plans the manufacturing of the products in a predetermined period. This makes it possible to predict the CO2 emissions. In this case, the product information includes, for example, raw material information related to raw materials for manufacturing the products, manufacturing process information related to a plurality of processes for manufacturing the products, product manufacturing plan information related to the products planned to be manufactured in a predetermined period, etc.

[0092] In order to express the present invention, the present invention has been described adequately and sufficiently through the embodiments with reference to the drawings in the above description, but it should be recognized that those skilled in the art can easily change and / or improve the above-mentioned embodiments. Therefore, unless the changes or improvements made by those skilled in the art are at a level that departs from the scope of the claims described in the claims, the changes or improvements are interpreted as being included in the scope of the claims. [Explanation of symbols]

[0093] 1000 Carbon dioxide emission calculation system (one example of a carbon dioxide emission calculation device) 1 Control processing section 2 Input section 3. Output section 4. Interface section (IF section) 5 Storage section 11 Control section 12 1st emission calculation section 13 Second emission calculation section 14 Total discharge calculation unit 15 Separated material discharge amount calculation section 16 Aggregation and calculation section 17 Unit amount calculation section 18 Allocation amount calculation unit 19 Periodic emissions calculation section 51 Product information storage section 52 Unit emission amount information storage section

Claims

1. CO2 emissions related to target products manufactured in a specified period at a factory capable of manufacturing multiple types of products that are manufactured through multiple processes from raw materials. ２ A carbon dioxide emission calculation system for calculating an emission amount, The plurality of steps includes a step in which a separated object is generated during processing, the separated object being separated from the main body; The raw material CO ２ Of the emissions, CO2 emissions from raw materials related to the above-mentioned target products ２ A first emission amount calculation unit that calculates an emission amount; For each of a plurality of processes for manufacturing the target product, a process CO ２ The discharge amount of the process CO ２ Of the emissions, the product process CO2 related to the target product in the process ２ A second emission amount calculation unit that calculates an emission amount; The raw material CO ２ The CO emissions and each process CO calculated for each of the multiple processes for manufacturing the target product ２ The sum of the CO emissions and the total process CO ２ The product raw material CO ２ CO emissions from each of the multiple processes for manufacturing the target product ２ The sum of these emissions is the total product CO ２ A total emission calculation unit for calculating an emission amount; The total process CO ２ Total product CO calculated from the emissions ２ The separated CO2 emissions associated with the separated ２ A separated product discharge amount calculation unit for calculating a discharge amount, Carbon dioxide emissions calculation system.

2. In the case where there are a plurality of target products classified in the same manner during the specified period, each separated CO ２ The sum of emissions is calculated. ２ A calculation unit is further provided to calculate the amount of emission. The carbon dioxide emission calculation system according to claim 1 .

3. The calculated aggregate separated CO is added to each of the plurality of target products so that the distribution amount per unit amount is the same. ２ Further comprising an allocation amount calculation unit that allocates the emission amount. The carbon dioxide emission calculation system according to claim 2 .

4. The target products are multiple, The first emission calculation unit calculates, for each of the plurality of target products, a product raw material CO ２ Calculate the amount of emissions, The second emission calculation unit calculates, for each of the plurality of target products, a product process CO ２ Calculate the amount of emissions, The total emission calculation unit calculates, for each of the plurality of target products, a total product CO ２ Calculate the amount of emissions, The separated product discharge calculation unit calculates, for each of the plurality of target products, the separated product CO ２ Calculate the amount of emissions, The total product CO calculated for each of the plurality of target products ２ Total product CO emissions are calculated by adding up the total ２ The amount of each separated CO is calculated as an emission amount and allocated to each of the plurality of target products by the allocation amount calculation unit. ２ Total the total amount of the separated CO ２ The total product CO ２ Emissions and the aggregate separated CO ２ The sum of the allocation amount and the period CO ２ A periodic emission amount calculation unit is further provided to calculate the emission amount. The carbon dioxide emission calculation system according to claim 3 .

5. In a factory capable of manufacturing multiple types of products that are manufactured through multiple processes from raw materials, the CO2 emissions related to the target products manufactured during a specified period are calculated. ２ A carbon dioxide emission calculation method for calculating an emission amount, comprising the steps of: The plurality of steps includes a step in which a separated object is generated during processing, the separated object being separated from the main body; The raw material CO ２ Of the emissions, CO2 emissions from raw materials related to the above-mentioned target products ２ a first discharge amount calculation step for calculating a discharge amount; For each of a plurality of processes for manufacturing the target product, a process CO ２ The discharge amount of the process CO ２ Of the emissions, the product process CO2 related to the target product in the process ２ a second discharge amount calculation step for calculating a discharge amount; The raw material CO ２ The CO emissions and each process CO calculated for each of the multiple processes for manufacturing the target product ２ The sum of the CO emissions and the total process CO ２ The product raw material CO ２ CO emissions from each of the multiple processes for manufacturing the target product ２ The sum of these emissions is the total product CO ２ A total emission amount calculation step for calculating the emission amount; The total process CO ２ Total product CO calculated from the emissions ２ The separated CO2 emissions associated with the separated ２ A separation discharge amount calculation step for calculating a discharge amount; Carbon dioxide emissions calculation method.

6. CO2 emissions related to target products manufactured in a specified period at a factory capable of manufacturing multiple types of products that are manufactured through multiple processes from raw materials. ２ 5. A carbon dioxide emission calculation program for determining an amount of emission, the program causing a computer to function as the carbon dioxide emission calculation system according to claim 1.

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