Carbon dioxide emission calculation system, method, and program

Abstract

To provide a carbon dioxide emission calculation system, method and program which can consider a CO2 emission for each process when there is a difference between the amount of raw materials and the amount of products.SOLUTION: The carbon dioxide emission calculation system obtains a CO2 emission in a prescribed period in a factory which can manufacture a plurality of kinds of products to be manufactured through a plurality of processes in which a raw material is regarded as one process and is included, and for each of the products, the system calculates a first loss material emission in each of the plurality of processes through which the product is manufactured. In this calculation. with respect to each of the plurality of processes through which the product is manufactured, a difference between an input amount of the product in the process and a product amount of the product is obtained as a first differential amount of the product in the process, and a first loss material emission of the product in the process is obtained by multiplying a CO2 emission in the process of the product by a ratio of the first differential amount of the product in the process to the input amount of the product in the process.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 amount of CO2 emitted from a product manufactured through a plurality of processes. [Background technology]

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

[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 received hot and cold energy, the operation record of the private power generation facility, and the operation record of the hot and cold energy facility; a materials management means for recording and managing the use 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 in the utility management means, materials management means, facility management means, and manufacturing execution management means; and a manufacturing execution management means for calculating the greenhouse gas emission amount calculated by the emission calculation means based on the production amount of one unit of the product. The carbon traceability management system includes an emission allocation means for allocating greenhouse gas emissions to each production lot. For primary power equipment, such as boilers, power receiving equipment, private power generation equipment, and waterworks, power equipment that operates using energy from the primary power equipment is classified as secondary power equipment, and non-power equipment that operates using energy from the primary and secondary power equipment is classified as tertiary equipment. The emission allocation means allocates greenhouse gas emissions for each production lot based on the usage status of the tertiary equipment corresponding to the product lot and the usage status of the secondary equipment corresponding to the product lot. The carbon traceability management system also includes an emission management means for managing the greenhouse gas emissions allocated to each production lot as data specific to the production lot. This carbon traceability management system allocates greenhouse gas emissions associated with discarded production lots and cleaning operations as product lot emissions according to certain rules. More specifically, greenhouse gas emissions generated by related cleaning operations and the production of discarded lots are apportioned based on an allocation policy. Under this allocation policy, a discarded lot is allocated proportionally to each production lot of the same item produced within 60 hours, regardless of the manufacturing process of the item, at a rate of one-third. Furthermore, 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 passed will be allocated to the first production lot of the same item produced after that time has passed. [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 when there is a difference between the amount of raw materials and the amount of finished product, it cannot take into account CO2 emissions for each process that 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 take into account CO2 emissions for each process when there is a difference between the amount of raw materials and the amount of product. [Means for solving the problem]

[0007] After extensive investigation, the inventors 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 the amount of CO2 emissions in a predetermined period in a factory capable of manufacturing a plurality of types of products through a plurality of processes, wherein the plurality of processes include raw materials for manufacturing the products as one of the processes, and the system includes a first emission calculation unit that calculates, for each of the products, the amount of first loss material emissions in each of the plurality of processes that are performed in manufacturing the product, and the first emission calculation unit calculates, for each of the plurality of processes that are performed in manufacturing the product, the amount of first loss material emissions in that process of the product by calculating, as a first difference amount for that process of the product, the difference amount between the amount of input into that process of the product and the amount of product produced, and multiplying the CO2 emissions generated in the process of the product by the ratio of the first difference amount for that process of the product to the amount of input into that process of the product. Preferably, in the above-mentioned carbon dioxide emission calculation system, the first emission calculation unit calculates the amount of CO2 emissions generated in the execution of the process by multiplying the amount of CO2 emissions per unit amount generated in the execution of the process by the input amount of the process.

[0008] Such a carbon dioxide emission calculation system calculates the amount of first loss material emitted for each product in each of the multiple processes that are involved in manufacturing that product, so that if there is a difference between the amount of raw materials and the amount of product, the CO2 emissions can be taken into account for each process.

[0009] In another aspect, the above-mentioned carbon dioxide emission calculation system further includes a first total emission calculation unit that calculates the total amount of first loss material emission for each of a plurality of process types by totaling the amount of first loss material emission calculated for each product by the first emission calculation unit for each process type.

[0010] Such a carbon dioxide emission calculation system can determine the CO2 emission amount (total emission amount of first loss materials) for a predetermined period for each process type.

[0011] In another aspect, the carbon dioxide emission calculation system described above includes a second emission calculation unit that calculates, for each of the products, the amount of second loss material emission in each of a plurality of processes that are passed through when the product is manufactured, and a first contribution calculation unit that calculates, for each of the products, the amount of first contribution in each of the plurality of processes that are passed through when the product is manufactured, and the second emission calculation unit calculates, for each of the plurality of processes that are passed through when the product is manufactured, the amount of difference between the amount of product input into that process and the amount of product that has passed through that process as the second difference amount for that process of the product, and for each upstream process that is upstream from the process of the product, calculates a third multiplication result by multiplying the CO2 emissions generated in the upstream process by the ratio of the second difference amount for that process to the amount of CO2 emitted in the upstream process, and totals the calculated third multiplication results. The first contribution calculation unit calculates the amount of second loss material emission for the product in that process by dividing the first addition result obtained by multiplying the amount of first loss material emission for the product in that process calculated by the first emission calculation unit by α and the second addition result obtained by multiplying the amount of second loss material emission for the product in that process calculated by the second emission calculation unit by the subtraction result obtained by subtracting α from 1, for each of the multiple processes that the product goes through in manufacturing the product, where α is a predetermined first allocation rate for the product type, by the first contribution calculation unit by the first total amount of first loss material emission for each process of the product calculated by the first emission calculation unit or the second total amount of second loss material emission for each process of the product calculated by the second emission calculation unit. Preferably, the carbon dioxide emission calculation system described above further includes a second total emission calculation unit that calculates the total amount of second loss material emission for each of a plurality of process types by totaling the amount of second loss material emission calculated for each product by the second emission calculation unit for each process type.

[0012] Such a carbon dioxide emission amount calculation system can determine the first contribution degree for each of a plurality of steps that are performed when manufacturing a product.

[0013] In another aspect, the above-mentioned carbon dioxide emission calculation system further includes a weighted average contribution calculation unit that calculates a weighted average contribution of each of the plurality of process types by weighting and averaging the first contributions calculated for each product by the first contribution calculation unit for that process type with the CO2 emissions generated in the production of the product.

[0014] Such a carbon dioxide emission calculation system can determine the weighted average contribution of each of a plurality of process types.

[0015] In another aspect, the carbon dioxide emission calculation system includes a second emission calculation unit that calculates, for each of the plurality of product types, an amount of second loss material emission in each of a plurality of processes that are passed through when manufacturing a product of the product type; a first total emission calculation unit that calculates, for each process type, a total amount of first loss material emission in each of the plurality of process types by summing, for each process type, the amounts of first loss material emissions calculated for each product by the first emission calculation unit; a second total emission calculation unit that calculates, for each of the plurality of process types, a total amount of second loss material emission in each of the plurality of process types by summing, for each process type, the amounts of second loss material emissions calculated for each product by the second emission calculation unit; and a second contribution calculation unit that calculates, for each of the plurality of process types, a second contribution, and a third multiplication result is obtained by multiplying the ratio of the second difference amount for the process by the ratio of the second difference amount for the process in which the product is produced, and the amount of second loss material emission for the process for the product is obtained by totaling each of the third multiplication results obtained. The second contribution calculation unit calculates, for each of the plurality of products, a first total amount of the product in the amount of first loss material emission for each process for the product calculated by the first emission calculation unit or a second total amount of the product in the amount of second loss material emission for each process for the product calculated by the second emission calculation unit, and further totals each of the first total amounts calculated for the plurality of products. A third total amount or a fourth total amount is calculated by further adding up each of the second total amounts calculated for each of the plurality of products, and when a predetermined second distribution ratio is β, a second addition result is calculated by adding a first multiplication result obtained by multiplying the first total amount of loss material calculated in the first total amount of loss material calculation unit by β and a second multiplication result obtained by multiplying the second total amount of loss material calculation unit by the subtraction result obtained by subtracting β from 1, and each of the second addition results calculated is divided by the third total amount or the fourth total amount to calculate the second contribution of the process type.

[0016] Such a carbon dioxide emission amount calculation system can determine the second contribution rate for each of a plurality of process types.

[0017] Another aspect of the present invention is a carbon dioxide emission calculation method for calculating the amount of CO2 emissions over a specified period in a factory capable of manufacturing multiple types of products through multiple processes, wherein the multiple processes include raw materials for manufacturing the products, which are considered to be one of the processes, and the method includes a first emission calculation step for calculating, for each product, the amount of first loss material emissions in each of the multiple processes that are undergone when manufacturing the product, and the first emission calculation step calculates, for each of the multiple processes that are undergone when manufacturing the product, the amount of difference between the amount of input into that process of the product and the amount of product produced of that product as a first difference amount for that process of the product, and calculates the first loss material emissions for that process of the product by multiplying the CO2 emissions generated in the execution of that process of the product by the ratio of the first difference amount for that process of the product to the amount of input into that process of the product.

[0018] This carbon dioxide emission calculation method calculates the amount of first loss material emitted for each product in each of the multiple processes that are involved in manufacturing the product, so that if there is a difference between the amount of raw materials and the amount of product, the CO2 emissions can be taken into account for each process.

[0019] Another aspect of the present invention is a carbon dioxide emission calculation program that calculates the amount of CO2 emissions over a specified period in a factory that can manufacture multiple product types through multiple processes, and causes a computer to function as any of the carbon dioxide emission calculation systems described above.

[0020] This makes it possible to provide a carbon dioxide emission calculation program, which has the same effects as the carbon dioxide emission calculation system described above. [Effects of the Invention]

[0021] The carbon dioxide emission amount calculation system, carbon dioxide emission amount calculation method, and carbon dioxide emission amount calculation program according to the present invention can take into account the CO2 emission amount for each process when there is a difference between the amount of raw material and the amount of product. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a diagram showing a configuration of a carbon dioxide emission amount calculation system according to an embodiment. [Figure 2] FIG. 10 is a diagram showing an example of a production volume information table of product information. [Figure 3] FIG. 10 is a diagram showing an example of a process throughput information table of product information. [Figure 4] FIG. 10 is a diagram showing an example of a unit discharge amount information table. [Figure 5] As an example, this is a diagram for explaining the CO2 emission amount of the first loss item of product number "P001." [Figure 6] As an example, this is a diagram for explaining the CO2 emission amount of the first loss item of product number "P002." [Figure 7] As an example, this is a diagram for explaining the CO2 emission amount of the first loss item of product number "P006." [Figure 8] FIG. 10 is a diagram illustrating the total amount of first loss material discharged, as an example. [Figure 9] As an example, this is a diagram for explaining the amount of CO2 emissions for the second loss item of product number "P001." [Figure 10] As an example, this is a diagram for explaining the amount of CO2 emissions for the second loss item of product number "P002." [Figure 11] As an example, this is a diagram for explaining the amount of CO2 emissions for the second loss item of product number "P006." [Figure 12] FIG. 10 is a diagram illustrating the total amount of second loss material discharged, as an example. [Figure 13] As an example, this is a diagram for explaining the first contribution of product number "P001." [Figure 14]As an example, this is a diagram for explaining the first contribution of product number "P002." [Figure 15] As an example, this is a diagram for explaining the first contribution degree of product number "P006". [Figure 16] FIG. 10 is a diagram illustrating the total contribution degree as an example. [Figure 17] FIG. 10 is a diagram illustrating a second contribution rate as an example. [Figure 18] 4 is a flowchart showing the operation of the carbon dioxide emission calculation system. DETAILED DESCRIPTION OF THE INVENTION

[0023] 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, components with the same reference numerals in each drawing indicate the same components, 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 component, a reference numeral with a subscript is used.

[0024] A carbon dioxide emission calculation system according to an embodiment calculates the amount of CO2 emissions over a predetermined period in a factory (plant) capable of producing a plurality of types of products through a plurality of processes. In this carbon dioxide emission calculation system, the plurality of processes include raw materials for producing the products, which are considered to be one of the processes. The carbon dioxide emission calculation system includes a first emission calculation unit that calculates, for each product, the amount of first loss material emissions in each of the plurality of processes that are performed when producing the product. For each of the plurality of processes that are performed when producing the product, the first emission calculation unit calculates the difference between the input amount of the product input into that process and the output amount of the product as a first difference amount for that process of the product, and calculates the first loss material emissions for that process of the product by multiplying the CO2 emissions generated in the process of the product by the ratio of the first difference amount for that process of the product to the input amount of the product.

[0025] Below, such a carbon dioxide emission calculation system, as well as a carbon dioxide emission calculation method and a carbon dioxide emission calculation program implemented therein, will be described in more detail. Here, as an example, a factory (plant) capable of producing a variety of rolled steel plates will be described, but the factory (plant) may be any type as long as it is capable of producing multiple types of products manufactured through multiple processes. The carbon dioxide emission calculation system may be configured by interconnecting an input / output terminal device that inputs and outputs data, one or more arithmetic processing devices (e.g., server devices) that perform various arithmetic processing, and one or more database devices that store (manage) various data, and at least some of these input / output terminal devices, one or more arithmetic processing devices, and one or more database devices may be integrated and interconnected for communication with the remainder. However, here, the carbon dioxide emission calculation system will be described using an example of an integrated carbon dioxide emission calculation device.

[0026] Fig. 1 is a diagram showing the configuration of a carbon dioxide emission calculation system in an embodiment. Fig. 2 is a diagram showing, as an example, a production volume information table for product information. Fig. 3 is a diagram showing, as an example, a process processing volume information table for product information. Fig. 3A shows the process processing information table for product number "P001", Fig. 3B shows the process processing information table for product number "P002", and Fig. 3C shows the process processing information table for product number "P006". Fig. 4 is a diagram showing, as an example, a unit emission amount information table.

[0027] The carbon dioxide emission calculation system (carbon dioxide emission calculation device as an example) 1000 in the embodiment includes, for example, an input unit 1, an output unit 2, an interface unit (IF unit) 3, a control processing unit 4, and a memory unit 5, as shown in FIG.

[0028] The input unit 1 is connected to the control processing unit 4 and is a device that inputs various commands, such as a command to start calculating CO2 emissions, and various data necessary for operating the carbon dioxide emission calculation device 1000, such as product information and unit emission information, to the carbon dioxide emission calculation device 1000, and is, for example, a plurality of input switches to which predetermined functions are assigned, a keyboard, a mouse, etc. The output unit 2 is connected to the control processing unit 4 and is a device that outputs the commands, data, calculation results, etc. input from the input unit 1 under the control of the control processing unit 4, and is, for example, a display device such as a CRT display, LCD (liquid crystal display), or organic EL display, or a printing device such as a printer.

[0029] The input unit 1 and the output unit 2 may be configured as a touch panel. In the case of configuring this touch panel, the input unit 1 is a position input device that detects an operation position and inputs, for example, a resistive film type or a capacitive type, and the output unit 2 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 are displayed on the display device. When a user touches the display position showing the input content they want 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. With 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 use is provided.

[0030] The IF unit 3 is connected to the control processing unit 4 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 4, and is, for example, an interface circuit for 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 3 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.

[0031] The storage unit 5 is connected to the control processing unit 4 and is a circuit that stores various predetermined programs and various predetermined data under the control of the control processing unit 4.

[0032] 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 first total emission amount calculation program, a second total emission amount calculation program, a first contribution calculation program, a weighted average contribution calculation program, and a second contribution calculation program. The control program controls each of the units 1 to 3, 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 for calculating, for each product, the amount of first loss material emission in each of multiple processes that are performed when manufacturing the product. The second emission amount calculation program is a program for calculating, for each product, the amount of second loss material emission in each of multiple processes that are performed when manufacturing the product. The first total emission amount calculation program is a program for calculating the total amount of first loss material emission in each of multiple process types by summing up the amounts of first loss material emissions calculated for each product by the first emission amount calculation program for each process type. The second total emission calculation program is a program that calculates the total emission of each second loss item for each of a plurality of process types by totaling, for each process type, the emission of each second loss item calculated for each product by the second emission calculation program. The first contribution calculation program is a program that calculates, for each product, the first contribution of each of a plurality of processes that are performed in manufacturing the product. The weighted average contribution calculation program is a program that calculates the weighted average contribution of each of the plurality of process types by weighting and averaging, for each of the plurality of process types, the first contributions calculated for each product by the first contribution calculation program, with the CO2 emissions generated in the manufacture of the product. The second contribution calculation program is a program that calculates the second contribution for each of a plurality of process types.

[0033] The various types of predetermined data include, for example, product information, unit discharge amount information, various intermediate calculation results, and final calculation results, which are necessary for executing each of these programs.

[0034] The 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 working memory for the control processing unit 4 and stores data generated during execution of the predetermined program, etc. The storage unit 5 may also be configured to include a hard disk device or a solid state drive (SSD) with a relatively large storage capacity.

[0035] The storage unit 5 functionally comprises a product information storage unit 51 and a unit discharge amount information storage unit 52 in order to store product information and unit discharge amount information, respectively.

[0036] The product information storage unit 51 stores product information. The product information is information about a product required to calculate CO2 emissions. More specifically, the product information includes production volume information (product volume information) representing the production volume (product volume) of each product during a predetermined period, and process throughput information representing a plurality of processes for manufacturing the product, the input amount (input amount, processed amount) input to each process during the predetermined period (input amount, processed amount in each process), and the CO2 emissions emitted during the execution of each process during the predetermined period. In this embodiment, multiple products of the same product type are manufactured during the predetermined period, so the product information is information for each of the multiple products, the production volume information is information for each of the multiple products, and the process processing information is information for each of the multiple products. The predetermined period may be set arbitrarily by the user of the carbon dioxide emission calculation system 1000, and may be, for example, a quarter (3 months) or a half year (6 months). The processing amount (input amount) is expressed, for example, by weight and volume (capacity). Although raw materials for manufacturing a product are not a process, the multiple processes include raw materials for manufacturing the product as one of the processes.

[0037] In this embodiment, the production volume information is stored in table format in the product information storage unit 51. The production volume information table PT, which registers this production volume information, includes, for example, a product number (product No.) field 511 for registering a product number as an example of a product ID, which is an identifier for specifying and identifying a product, a product type name field 512 for registering the name of the product type (product type name) of the product with the product number registered in the product number field 511, and a production volume field 513 for registering the production volume [tons] of the product with the product number registered in the product number field 511, as shown in FIG. 2 , and has a record for each product. The product type name is an example of a product type ID, which is an identifier for specifying and identifying the product type. The way in which products are classified into types may be arbitrarily set by the user of the carbon dioxide emission calculation system 1000; for example, in the case of steel plates, they are classified by steel type (composition of the steel plate). The way in which products are classified may be arbitrarily set by the user of the carbon dioxide emission calculation system 1000; for example, they may be classified by order, etc.

[0038] In this embodiment, the process throughput information is stored in table form for each product in the product information storage unit 51. The process throughput information table ST (ST-1, ST-2, ..., ST-6) in which this process throughput information is registered includes, for example, as shown in Fig. 3, a process number field 514 in which a process number is registered as an example of a process ID which is an identifier for specifying and identifying a process, a process type name field 515 in which a process type name which is the name of the type of process for the process number registered in the process number field 514, an input amount field 516 in which an input amount (input amount, throughput amount) [ton] for the process for the process number registered in the process number field 514, a unit CO2 emission field 517 in which a CO2 emission per unit amount [tCO2 / ton] for the process for the process number registered in the process number field 514, and an emission amount field 518 in which a CO2 emission [tCO2] for the process for the process number registered in the process number field 514 is registered. In this embodiment, as described above, the raw material is considered to be one of the processes, and therefore the raw material is treated as the process with process number "1." The CO2 emissions of a process are calculated by multiplying the input amount (input amount, processing amount) of the process by the CO2 emissions per unit amount in the process. In the example shown in FIG. 3, the input amount (input amount, processing amount) in the final process "shipment" matches the production amount of the product (product amount). The CO2 emissions per unit amount in a process are the CO2 emissions per unit amount emitted in the execution of the process.

[0039] In the example shown in FIG. 2, there are six products manufactured during the specified period: a product of product type "H1" and product number "P001", a product of product type "H1" and product number "P002", a product of product type "H1" and product number "P003", a product of product type "H2" and product number "P004", a product of product type "H2" and product number "P005", and a product of product type "H2" and product number "P006". Therefore, process production volume information corresponding to each of these products is stored in six tables in the product information storage unit 51, but for convenience of illustration, FIG. 3 shows the process production volume information for products with product numbers "P001", "P002", and "P006", and omits the process production volume information for products with product numbers "P003", "P004", and "P005".

[0040] The product information may be, for example, past actual values ​​for a predetermined period (e.g., a quarter or a year) to examine the actual situation, or may be expected values ​​for a predetermined period to simulate a forecast.

[0041] The unit emission amount information storage section 52 stores unit emission amount information. The unit emission amount information is the amount of CO2 emitted in the process by carrying out the process, and in this embodiment, it is expressed, for example, as unit CO2 emission, which is the amount of CO2 emitted per unit amount. In this embodiment, the unit amount is the weight of the material to be processed (material to be processed) to be processed by carrying out the process, but is not limited to this and may be, for example, the volume of the material to be processed.

[0042] In this embodiment, the unit emission information is stored in table format in the unit emission information storage unit 52. The unit emission information table UT, which registers this unit emission information, includes, for example, a process type name field 521 for registering a process type name, which is the name of the process given to each process type, and a unit CO2 emission field 522 for registering the unit CO2 emission [tCO2 / ton] of the process corresponding to the process type name registered in the process type name field 521, as shown in FIG. 4 , and has a record for each process type name. The process type name is an example of a process type ID, which is an identifier for specifying and identifying the process type. In this embodiment, as described above, raw materials are considered to be one of the processes, and therefore the unit CO2 emission amount of the raw materials is registered in the unit emission information table UT. The unit CO2 emission amount of the raw material is the amount of CO2 emission per unit amount emitted in relation to the raw material, for example, the amount of CO2 emission per unit amount emitted in the production of the raw material.

[0043] As described above, such product information and unit emission information may be input to carbon dioxide emission calculation system 1000 from input unit 1. Alternatively, for example, the product information and unit emission information may be input to carbon dioxide emission calculation system 1000 from a storage medium (e.g., a USB memory or an SD card (registered trademark)) that stores the information via IF unit 3, or may be input to carbon dioxide emission calculation system 1000 from a storage medium (e.g., a CD-R or a DVD-R) that records the information via its drive device and IF unit 3, or may be input to carbon dioxide emission calculation system 1000 from a management server device that manages the information via a communication network and IF unit 3. The control processing program and the like may also be input to carbon dioxide emission calculation system 1000 and stored in memory unit 5.

[0044] Returning to Fig. 1, the control processing unit 4 is a circuit that controls each of the units 1 to 3, and 5 of the carbon dioxide emission calculation device 1000 according to the function of each unit, and calculates the amount of CO2 emission during the predetermined period. The control processing unit 4 is configured to include, for example, a CPU (Central Processing Unit) and its peripheral circuits. When the control processing program is executed, the control processing unit 4 is functionally configured to include a control unit 41, a first emission amount calculation unit 42, a second emission amount calculation unit 43, a first total emission amount calculation unit 44, a second total emission amount calculation unit 45, a first contribution calculation unit 46, a weighted average contribution calculation unit 47, and a second contribution calculation unit 48.

[0045] These sections 41 to 48 will be described with reference to FIGS. 5 to 17. FIG. 5 is a diagram illustrating, as an example, the CO2 emissions of the first loss item for product number "P001." FIG. 6 is a diagram illustrating, as an example, the CO2 emissions of the first loss item for product number "P002." FIG. 7 is a diagram illustrating, as an example, the CO2 emissions of the first loss item for product number "P006." FIG. 8 is a diagram illustrating, as an example, the total emissions of the first loss item. FIG. 9 is a diagram illustrating, as an example, the CO2 emissions of the second loss item for product number "P001." FIG. 10 is a diagram illustrating, as an example, the CO2 emissions of the second loss item for product number "P002." FIG. 11 is a diagram illustrating, as an example, the CO2 emissions of the second loss item for product number "P006." FIG. 12 is a diagram illustrating, as an example, the total emissions of the second loss item. FIG. 13 is a diagram illustrating, as an example, the first contribution of product number "P001." Fig. 14 is a diagram illustrating the first contribution of product number "P002" as an example. Fig. 15 is a diagram illustrating the first contribution of product number "P006" as an example. Fig. 16 is a diagram illustrating the total contribution as an example. Fig. 17 is a diagram illustrating the second contribution as an example.

[0046] The control unit 41 controls each of the units 1 to 3 and 5 of the carbon dioxide emission calculation device 1000 according to the function of each unit, and is in charge of overall control of the carbon dioxide emission calculation device 1000.

[0047] The first emission calculation unit 42 calculates, for each product, the amount of first loss material emission in each of the multiple processes that are passed through when manufacturing the product. For each of the multiple processes that are passed through when manufacturing the product, the first emission calculation unit 42 calculates the difference between the input amount of the product input into that process and the output amount of the product as the first difference amount for that process of the product, and calculates the amount of first loss material emission in that process of the product by multiplying the CO2 emissions generated in the implementation of that process of the product by the ratio of the first difference amount for that process of the product to the input amount of the product in that process.

[0048] In the examples shown in FIGS. 2 to 4, for each of the products with product numbers "P001" to "P006", the amount of first waste material discharged is calculated for each of the multiple processes that are performed when manufacturing the product.

[0049] For example, the amount of first loss material discharged in each of the multiple processes that are performed when manufacturing a product with product number "P001" can be calculated as follows.

[0050] As shown in Figure 3A, the product with product number "P001" is manufactured through the following steps: raw material process number "1", melting and casting process number "2", rolling 1 process number "3", rolling 2 process number "4", heat treatment process number "5", cutting process number "6", and shipping process number "7". The first loss CO2 emissions in the raw material process with process number "1" are calculated as follows: the processing volume of this process is "26" [tons], and the product volume (production volume) of product number "P001" is "18" [tons]. Therefore, as shown in Figure 5, the first difference volume of this process is "8" (= 26 - 18) [tons]. The CO2 emissions resulting from carrying out this process are 104 (= 26 [tons] × 4 [tCO2 / ton]) [tCO2]. Therefore, by multiplying the CO2 emissions of this process "104" [tCO2] by "8 / 26", which is the ratio of the first difference volume "8" [tons] to the input volume of this process "26" [tons], the CO2 emissions can be calculated as "32" (= 104 × 8 / 26) [tCO2]. Similarly, the amounts of primary waste emissions for the melting and casting process (process number "2"), the rolling 1 process (process number "3"), the rolling 2 process (process number "4"), the heat treatment process (process number "5"), the cutting process (process number "6"), and the shipping process (process number "7") can be calculated as "12" (= 39 × 8 / 26) [tCO2], "4.8" (= 19.2 × 6 / 24) [tCO2], "2.4" (= 13.2 × 4 / 22) [tCO2], "4" (= 22 × 4 / 22) [tCO2], "0.4" (= 4 × 2 / 20) [tCO2], and "0" (= 0.9 × 0 / 18) [tCO2], as shown in Figure 5.

[0051] Similarly, for product number "P002," as shown in Figures 3B and 6, the first loss emissions for each of the processes, process number "1" (raw material process), process number "2" (melting and casting process), process number "3" (rolling 1 process), process number "4" (rolling 2 process), process number "5" (heat treatment process), process number "6" (cutting process), and process number "7" (shipping process), are calculated as "40" [tCO2], "12" [tCO2], "4.8" [tCO2], "2.4" [tCO2], "4" [tCO2], "0.4" [tCO2], and "0" [tCO2]. Although not shown, the first loss emissions for each process can also be calculated for product number "P003."

[0052] The first loss material product type discharge amount (not shown) for each process for the product type "H1" can be calculated by totaling the first loss material discharge amount for each process calculated for each of the products with product numbers "P001," "P002," and "P003" for each process.

[0053] Similarly, for product type "H2," the amount of first loss material discharged (not shown) for each process in the product with product number "P004" is determined, the amount of first loss material discharged (not shown) for each process in the product with product number "P005" is determined, and the amount of first loss material discharged for each process in the product with product number "P006" is determined, as shown in Figures 3C and 7. The amount of first loss material discharged (not shown) for each process in the product type "H2" can be determined by totaling the amount of first loss material discharged for each process determined for each of the products with product numbers "P004," "P005," and "P006," for each process.

[0054] The first loss emission amount of a process determined in this way represents the influence that the first difference amount in a process has on the downstream side of the process in terms of CO2 emission.

[0055] The first total emission amount calculation unit 44 calculates the total emission amount of each of the first loss materials for each of the plurality of process types by totaling, for each process type, the emission amounts of each of the first loss materials calculated for each product by the first emission amount calculation unit 42. In the example shown in Figures 2 to 7, the total emission amounts of each of the first loss materials for the raw material process, the melting and casting process, the rolling 1 process, the rolling 2 process, the heat treatment process, the surface treatment process, the cutting process, and the shipping process are calculated as shown in Figure 8. For example, the total emissions of first loss materials in the melting and casting process for product type "H1" is the sum of the emissions of first loss materials in the melting and casting process for product number "P001" (12 tCO2), the emissions of first loss materials in the melting and casting process for product number "P002" (12 tCO2), and the emissions of first loss materials in the melting and casting process for product number "P003" (12 tCO2). The total of the first loss emissions of "4.5" [tCO2] in the melting and casting process for product number "P004", the first loss emissions of "13.5" [tCO2] in the melting and casting process for product number "P005", and the first loss emissions of "12" [tCO2] in the melting and casting process for product number "P006" is added together with the first loss emissions of "30" [tCO2] in the melting and casting process for product type "H2", resulting in the figure of "66" [tCO2].

[0056] The second emission calculation unit 43 calculates, for each product, the amount of second loss material emitted in each of the multiple processes that are passed through when manufacturing the product. For each of the multiple processes that are passed through when manufacturing the product, the second emission calculation unit 43 calculates the difference between the input amount of the product input to the process and the amount of the product that has passed through the process as the second difference amount for the process of the product, calculates a third multiplication result for each upstream process upstream from the process of the product by multiplying the CO2 emissions generated in the upstream process by the ratio of the second difference amount for the process to the input amount for the upstream process, and calculates the amount of second loss material emitted in the process of the product by summing up the third multiplication results.

[0057] In the examples shown in FIGS. 2 to 4, for each of the products with product numbers "P001" to "P006", the amount of second waste material discharged is calculated for each of the multiple processes that are performed when manufacturing the product.

[0058] For example, the amount of second loss material discharged in each of the multiple processes that are performed when manufacturing a product with product number "P001" can be calculated as follows.

[0059] Since the amount passing through a process is the input amount of the next process, the second difference amount of a process is calculated as the difference amount between the input amount of the process and the input amount of the process next to the process (the amount passing through the process). The amount passing through the final process is the product amount (production amount). As shown in Figure 9, for the product with product number "P001", the second differential amounts in the raw material process with process number "1", the melting and casting process with process number "2", the rolling 1 process with process number "3", the rolling 2 process with process number "4", the heat treatment process with process number "5", the cutting process with process number "6", and the shipping process with process number "7" are "0" (= 26 - 26) [tons], "2" (= 26 - 24) [tons], "2" (= 24 - 22) [tons], "0" (= 22 - 22) [tons], "2" (= 22 - 20) [tons], "2" (= 20 - 18) [tons], and "0" (= 18 - 18) [tons]. In the material process with process number "1", there is no upstream process upstream of this process, and the CO2 emissions of this process are "104" (= 26 [ton] × 4 [tCO2 / ton]) [tCO2], so the third multiplication result of the process with process number "1" is "0" (= 104 × 0 / 26) [tCO2], and the second loss emissions of this process are "0" [tCO2]. In the melting and casting process with process number "2," the upstream process of this process is process number "1," and the CO2 emissions of this process are "39" (= 26 [tons] × 1.5 [tCO2 / ton]) [tCO2], so the third multiplication result of this process is "3" (= 39 × 2 / 26) [tCO2], and the third multiplication result of the process upstream of process number "1" is "8" (= 104 × 2 / 26) [tCO2], and the second loss emissions of this process, when added together, are "11" (= 3 + 8) [tCO2].In the rolling 1 process with process number "3," the upstream processes upstream of this process are process number "2" and process number "1," and the CO2 emissions of this process are "19.2" (=24 [tons] x 0.8 [tCO2 / ton]) [tCO2], so the third multiplication result of this process is "1.6" (=19.2 x 2 / 24) [tCO2], the third multiplication result of the upstream process of process number "2" is "3" (=39 x 2 / 26) [tCO2], and the third multiplication result of the upstream process of process number "1" is "8" (=104 x 2 / 26) [tCO2], and the second loss emissions of this process, calculated by adding these up, is "12.6" (=1.6 + 3 + 8) [tCO2]. In the rolling 2 process with process number "4", the upstream processes on the upstream side of this process are process number "3", process number "2", and process number "1", and the CO2 emissions of this process are "13.2" (= 22 [tons] × 0.6 [tCO2 / ton]) [tCO2], but since the second difference amount of this process is "0" [ton], the third multiplication result of this process is "0" (= 13.2 × 0 / 22) [tCO2], The third multiplication result for the upstream process of process number "3" is "0" (= 19.2 × 0 / 24) [tCO2], the third multiplication result for the upstream process of process number "2" is "0" (= 39 × 0 / 26) [tCO2], and the third multiplication result for the upstream process of process number "1" is "0" (= 104 × 0 / 26) [tCO2], and the second loss emissions for this process are calculated by adding these up to "0" (= 0 + 0 + 0 + 0) [tCO2]. Similarly, the amounts of secondary waste emissions in the heat treatment process with process number "5", the cutting process with process number "6", and the shipping process with process number "7" can be calculated as "15.8" (= 22 × 2 / 22 + 13.2 × 2 / 22 + 19.2 × 2 / 24 + 39 × 2 / 26 + 104 × 2 / 26) [tCO2], "16.2" = 4 × 2 / 20 + 22 × 2 / 22 + 13.2 × 2 / 22 + 19.2 × 2 / 24 + 39 × 2 / 26 + 104 × 2 / 26), and "0" (= 0.9 × 0 / 18 + 4 × 0 / 20 + 22 × 0 / 22 + 13.2 × 0 / 22 + 19.2 × 0 / 24 + 39 × 0 / 26 + 104 × 0 / 26) [tCO2], as shown in Figure 9.

[0060] Similarly, for product number "P002," as shown in Figures 3B and 10, the secondary loss emissions for each of the processes, including raw material process number "1," melting and casting process number "2," rolling 1 process number "3," rolling 2 process number "4," heat treatment process number "5," cutting process number "6," and shipping process number "7," are calculated as "8" [tCO2], "11" [tCO2], "12.6" [tCO2], "0" [tCO2], "15.8" [tCO2], "16.2" [tCO2], and "0" [tCO2], respectively. Although not shown, the secondary loss emissions for each process of product number "P003" are also calculated.

[0061] The amount of second-loss material product type discharge (not shown) for each process in the product type "H1" can be calculated by totaling the amount of second-loss material discharge for each process calculated for each of the products with product numbers "P001," "P002," and "P003" for each process.

[0062] Similarly, for product type "H2," the amount of second loss material discharged (not shown) for each process in the product with product number "P004" is determined, the amount of second loss material discharged (not shown) for each process in the product with product number "P005" is determined, and the amount of second loss material discharged (not shown) for each process in the product with product number "P006" is determined, as shown in Figures 3C and 11. The amount of second loss material discharged (not shown) for each process in the product type "H2" can be determined by totaling the amount of second loss material discharged for each process determined for each of the products with product numbers "P004," "P005," and "P006," for each process.

[0063] The second loss emission amount of the process obtained in this way represents the influence that the second difference amount in the process has on the upstream side of the process in terms of CO2 emission.

[0064] The second total emission amount calculation unit 45 calculates the total emission amount of each second loss material for each of the plurality of process types by totaling, for each process type, the emission amounts of each second loss material calculated for each product by the second emission amount calculation unit 43. In the example shown in Figures 2 to 4 and 9 to 11, the total emission amount of each second loss material for the raw material process, melting and casting process, rolling 1 process, rolling 2 process, heat treatment process, surface treatment process, cutting process, and shipping process is calculated as shown in Figure 12. For example, the total amount of secondary loss emissions in the melting and casting process for product type "H1" is "33" [tCO2], which is the sum of the amount of secondary loss emissions in the melting and casting process for product number "P001" (11) [tCO2], the amount of secondary loss emissions in the melting and casting process for product number "P002" (11) [tCO2], and the amount of first loss emissions in the melting and casting process for product number "P003" (11) [tCO2]. The total of the second loss emissions of "0" [tCO2] in the melting and casting process for product number "P004", the second loss emissions of "0" [tCO2] in the melting and casting process for product number "P005", and the second loss emissions of "0" [tCO2] in the melting and casting process for product number "P006" is added together with the first loss emissions of "0" [tCO2] in the melting and casting process for product type "H2", and the result is "33" [tCO2].

[0065] 8 is "364.9" (=224+66+26.4+21+22+3.5+2+0) [tCO2], and the total amount of second loss material emissions in each process shown in FIG. 12 is "364.9" (=48+33+66.2+39.8+78.2+16.4+83.3+0) [tCO2], which naturally match. Therefore, in this embodiment, the carbon dioxide emission calculation device 1000 is equipped with first and second total emission calculation units 44, 45 to calculate the second contribution rate described below. However, if the second contribution rate is not calculated, either one of the first and second total emission calculation units 44, 45 may be provided.

[0066] The first contribution calculation unit 46 calculates, for each product, a first contribution for each of a plurality of processes that are passed through in manufacturing the product. When a predetermined first allocation rate for the product type of the product is α, the first contribution calculation unit 46 calculates, for each of a plurality of processes that are passed through in manufacturing the product, a first addition result obtained by multiplying the first loss material emission amount for the product in that process calculated by the first emission calculation unit 42 by α, and a second addition result obtained by multiplying the second loss material emission amount for the product in that process calculated by the second emission calculation unit 43 by the subtraction result obtained by subtracting α from 1, and dividing the result by the first total amount of first loss material emission for each process of the product calculated by the first emission calculation unit 42 or the second total amount of second loss material emission for each process of the product calculated by the second emission calculation unit 43, thereby calculating the first contribution of the product in that process.

[0067] In calculating the first contribution rate, the user of the carbon dioxide emission calculation device 1000 can set the first allocation rate α for each product type, and the first allocation rate α for each product type may be different from each other (all different values) or may include the same value (all the same values ​​or some the same values ​​(some the same values ​​and the rest different values)). In the example shown in Figures 2 to 4, for example, the first allocation rate α1 for products of product type "H1" is set to "0.5", and the first allocation rate α2 for products of product type "H2" is set to "0.8".

[0068] In the example shown in Figures 2 to 4, the amounts of first loss material emissions in each process for a product of product type "H1" and product number "P001" are the values ​​shown in Figures 5 and 13, which were determined as described above, and the amounts of first loss material emissions in each process for this product are the values ​​shown in Figures 9 and 13, which were determined as described above. For this product, in the raw material process with process number "1," the first A multiplication result is "α1 × 32" [tCO2], the second A multiplication result is "(1 - α1) × 0" [tCO2], and α1 = 0.5, so the first addition result is "16" (= 16 + 0) [tCO2], and the first total amount is "55.6" (= 32 + 12 + 4.8 + 2.4 + 4 + 0.4 + 0), so the first contribution is "0.288" (= 16 / 55.6 rounded to two decimal places). Similarly, the first contributions of the melting and casting process with process number "2", the rolling 1 process with process number "3", the rolling 2 process with process number "4", the heat treatment process with process number "5", the cutting process with process number "6", and the shipping process with process number "7" are "0.207", "0.156", "0.022", "0.178", "0.149", and "0", respectively, as shown in Figure 13.

[0069] Similarly, for the product with product number "P002," as shown in Figures 6, 10, and 14, the respective first contribution degrees of the raw material process with process number "1," the melting and casting process with process number "2," the rolling 1 process with process number "3," the rolling 2 process with process number "4," the heat treatment process with process number "5," the cutting process with process number "6," and the shipping process with process number "7" are calculated to be "0.377," "0.181," "0.137," "0.019," "0.156," "0.131," and "0." Although not shown, the respective first contribution degrees of each process are also calculated for the product with product number "P003."

[0070] Similarly, for product type "H2", the first contribution degree (not shown) of each process in the product with product number "P004" is calculated, the first contribution degree (not shown) of each process in the product with product number "P005" is calculated, and the first contribution degree of each process in the product with product number "P006" is calculated, as shown in Figures 7, 11 and 15.

[0071] The weighted average contribution calculation unit 47 calculates the weighted average contribution of each of the plurality of process types by weighting and averaging the first contributions calculated for each product by the first contribution calculation unit 46 in that process type by the amount of CO2 emissions generated in the manufacture of the product. In the example shown in Figures 2 to 15, the weighted average contributions of the raw material process, the melting and casting process, the rolling 1 process, the rolling 2 process, the heat treatment process, the surface treatment process, the cutting process, and the shipping process are calculated as shown in Figure 16. For example, the weighted average contribution of the melting and casting process is as follows: the first contribution of the melting and casting process for product number "P001" is "0.207", and the CO2 emissions generated in the manufacture of product number "P001" is "55.6" [tCO2]; the first contribution of the melting and casting process for product number "P002" is "0.181", and the CO2 emissions generated in the manufacture of product number "P002" is "63.6" [tCO2]; the first contribution of the melting and casting process for product number "P003" is "0.177", and the CO2 emissions generated in the manufacture of product number "P003" is "65" [tCO2]; the first contribution of the melting and casting process for product number "P004" is "0.028", and the CO2 emissions generated in the manufacture of product number "P005" is "65" [tCO2]; The CO2 emissions generated in the manufacture of product "P004" are "31.8" [tCO2], the primary contribution of the melting and casting process for product number "P005" is "0.037", the CO2 emissions generated in the manufacture of product number "P005" are "72.1" [tCO2], and the primary contribution of the melting and casting process for product number "P006" is "0.031". " and the CO2 emissions resulting from the production of product number "P006" are "76.8" [tCO2], so the result is "0.111" (= (0.207 x 55.6 + 0.181 x 63.6 + 0.117 x 65 + 0.028 x 31.8 + 0.037 x 72.1 + 0.031 x 76.8) / (55.6 + 63.6 + 65 + 31.8 + 72.1 + 76.8)).

[0072] The second contribution calculation unit 48 calculates a second contribution for each of a plurality of process types. For each of the plurality of products, the second contribution calculation unit 48 calculates a first total amount of the product in the first loss amount of each process of the product calculated by the first emission calculation unit 42, or a second total amount of the product in the second loss amount of each process of the product calculated by the second emission calculation unit 43. The second contribution calculation unit 48 calculates a third total amount by further totaling the first total amounts calculated for each of the plurality of products, or a fourth total amount by further totaling the second total amounts calculated for each of the plurality of products. When a predetermined second allocation ratio is β, the second contribution calculation unit 48 calculates a second addition result by adding a first multiplication result obtained by multiplying the first total discharge amount of lost material calculated by the first total discharge calculation unit 44 by β, and a second multiplication result obtained by multiplying the second total discharge amount of lost material calculated by the second total discharge calculation unit 45 by the subtraction result obtained by subtracting β from 1, and divides each of the calculated second addition results by the third total amount or the fourth total amount to calculate the second contribution of the process type.

[0073] In the example shown in Figures 2 to 4, the amount of first loss material discharged in each process for each product is calculated as shown in Figures 5 to 7, the amount of second loss material discharged in each process for each product is calculated as shown in Figures 9 to 11, the first total weight and the second total weight for each product are calculated as shown in Figures 13 to 15, the total amount of first loss material discharged for each process type is calculated as shown in Figure 8, and the total amount of first loss material discharged for each process type is calculated as shown in Figure 12. From these, the second contribution of each process type is calculated as shown in Figure 17. For example, when β = 0.5, the second contribution of melting and casting is "0.136" (= (33 x 0.5 + 66 x 0.5) / 364.9) because the third total weight is "364.9" (= 55.6 + 63.6 + 65 + 31.8 + 72.1 + 76.8 = fourth total weight).

[0074] The input unit 1, output unit 2, IF unit 3, control processing unit 4, and storage unit 5 in the carbon dioxide emission calculation device 1000, which is 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 that they can communicate with each other.

[0075] Next, the operation of this embodiment will be described below: Fig. 18 is a flowchart showing the operation of the carbon dioxide emission amount calculation system (one example of the carbon dioxide emission amount calculation device).

[0076] When the carbon dioxide emission calculation device 1000 configured as described above is powered on, it initializes the necessary parts and starts operation. By executing the control processing program, the control processing unit 4 functionally configures a control unit 41, a first emission amount calculation unit 42, a second emission amount calculation unit 43, a first total emission amount calculation unit 44, a second total emission amount calculation unit 45, a first contribution calculation unit 46, a weighted average contribution calculation unit 47, and a second contribution calculation unit 48.

[0077] In Figure 18, the carbon dioxide emission amount calculation device 1000 first calculates, for each product, the amount of first waste material emitted in each of the multiple processes that are passed through when manufacturing the product using the first emission amount calculation unit 42 of the control processing unit 4, and stores this in the memory unit 5 (S1).

[0078] Next, the carbon dioxide emission amount calculation device 1000 determines the first total emission amount of each loss material for each of the plurality of process types by the first total emission amount calculation unit 44 of the control processing unit 4, and stores the amount in the storage unit 5 (S2).

[0079] Next, the carbon dioxide emission calculation device 1000 calculates, for each product, the amount of second waste material emitted in each of the multiple processes that are passed through when manufacturing the product using the second emission calculation unit 43 of the control processing unit 4, and stores the amount of second waste material emitted in the memory unit 5 (S3).

[0080] Next, the carbon dioxide emission amount calculation device 1000 determines the second total emission amount of each loss material for each of the plurality of process types by the second total emission amount calculation unit 45 of the control processing unit 4, and stores the amount in the storage unit 5 (S4).

[0081] Next, the carbon dioxide emission calculation device 1000 uses the first contribution calculation unit 46 of the control processing unit 4 to calculate the first contribution for each of the multiple processes that are performed to manufacture the product, and stores the calculated first contribution in the memory unit 5 (S5).

[0082] Next, the carbon dioxide emission calculation device 1000 calculates the weighted average contribution of each of the plurality of process types by the weighted average contribution calculation unit 47 of the control processing unit 4, and stores the weighted average contribution of the process type in the storage unit 5 (S6).

[0083] Next, the carbon dioxide emission amount calculation device 1000 causes the first contribution calculation section 46 of the control processing section 4 to calculate the second contribution for each of the plurality of process types, and stores the calculated second contribution in the storage section 5 (S7).

[0084] Then, the carbon dioxide emission calculation device 1000 causes the control unit 41 of the control processing unit 4 to output each calculation result from the output unit 2 (S8), and ends this process. Note that the control unit 41 may output each calculation result to an external device via the IF unit 3 as necessary.

[0085] As described above, the carbon dioxide emission calculation system (one example of a carbon dioxide emission calculation device) 1000 in the embodiment, and the carbon dioxide emission calculation method and carbon dioxide emission calculation program implemented therein, calculate the amount of first loss material emitted for each product in each of the multiple processes that are involved in manufacturing the product, so that if there is a difference between the amount of raw materials and the amount of product, the CO2 emissions can be taken into account for each process.

[0086] 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 determine the CO2 emission amount (total first loss amount) for a predetermined period for each process type.

[0087] 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 determine the first contribution degree for each of a plurality of steps that are passed through when manufacturing a product.

[0088] 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 determine the weighted average contribution of each of a plurality of process types.

[0089] 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 determine the second contribution degree for each of a plurality of process types.

[0090] 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 calculate the first and second contribution rates, so that the impact on the upstream and downstream sides of process waste (for example, scraps generated during the process that do not become products) can be recognized, and the process waste can be appropriately evaluated.

[0091] In order to express the present invention, the present invention has been properly and sufficiently described above through the embodiments with reference to the drawings, 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 causes departure from the scope of the claims described in the claims, such changes or improvements are interpreted as being included in the scope of the claims. [Explanation of symbols]

[0092] 1000 Carbon dioxide emission calculation system (one example of a carbon dioxide emission calculation device) 1 Input section 2 Output section 3 Interface section (IF section) 4 Control processing section 5 Storage section 41 Control Unit 42 1st emission calculation section 43 Second emission calculation section 44 First total discharge calculation unit 45 Second total discharge calculation unit 46 First contribution calculation unit 47 Weighted average contribution calculation unit 48 Second contribution calculation unit 51 Product information storage section 52 Unit emission amount information storage section

Claims

1. In a factory that can manufacture multiple types of products through multiple processes, ２ A carbon dioxide emission calculation system for calculating an emission amount, The plurality of steps includes a raw material for producing the product as one of the steps; a first emission calculation unit that calculates, for each of the products, an amount of first loss material emitted in each of a plurality of processes that are performed when manufacturing the product; The first emission calculation unit calculates, for each of a plurality of processes that are performed in manufacturing the product, a difference between an input amount of the product input into the process and a product amount of the product as a first difference amount for the process of the product, and calculates a CO emission amount generated in the process of the product. ２ The first loss material emission amount of the process of the product is calculated by multiplying the emission amount by the ratio of the first difference amount of the process of the product to the input amount of the process of the product. Carbon dioxide emissions calculation system.

2. The apparatus further includes a first total emission calculation unit that calculates a total amount of first loss material emission for each of a plurality of process types by summing up the amounts of first loss material emission calculated for each product by the first emission calculation unit for each process type. The carbon dioxide emission calculation system according to claim 1 .

3. a second emission calculation unit that calculates, for each of the products, an amount of second loss material emitted in each of a plurality of processes that are performed when manufacturing the product; a first contribution calculation unit that calculates, for each of the products, a first contribution in each of a plurality of processes that are performed when manufacturing the product; The second discharge amount calculation unit For each of the multiple processes that are involved in manufacturing the product, The difference between the input amount of the product into the process and the amount of the product that has passed through the process is calculated as a second difference amount for the process of the product, and for each upstream process upstream from the process of the product, the CO generated in the upstream process is calculated. ２ The discharge amount is multiplied by the ratio of the second difference amount of the process to the input amount of the upstream process to obtain a third multiplication result, and the obtained third multiplication results are summed up to obtain: Calculate the amount of secondary waste material discharged in the process for the product in question, The first contribution calculation unit When the predetermined first allocation rate for the product type of the product is α, For each of the multiple processes that are involved in manufacturing the product, In the process, a first addition result is obtained by adding a first multiplication result A obtained by multiplying the first loss material emission amount of the product in the process calculated by the first emission calculation unit by the α, and a second multiplication result A obtained by multiplying the second loss material emission amount of the product in the process calculated by the second emission calculation unit by the subtraction result obtained by subtracting the α from 1, and dividing the result by a first total amount of first loss material emission in each process of the product calculated by the first emission calculation unit or a second total amount of second loss material emission in each process of the product calculated by the second emission calculation unit, Determine the first contribution of the relevant process to the relevant product. The carbon dioxide emission calculation system according to claim 1 .

4. For each of the plurality of process types, each first contribution calculated for each product by the first contribution calculation unit is calculated based on the CO ２ a weighted average contribution calculation unit that calculates a weighted average contribution of the process type by calculating a weighted average by the amount of discharged material; The carbon dioxide emission calculation system according to claim 3 .

5. a second emission calculation unit that calculates, for each of the plurality of product types, an amount of second loss material emitted in each of a plurality of processes that are performed when manufacturing a product of the product type; a first total emission calculation unit that calculates a total emission amount of each first loss material for each of a plurality of process types by summing up the emission amounts of each first loss material calculated for each product by the first emission calculation unit for each process type; a second total emission calculation unit that calculates a total amount of second loss material emission for each of a plurality of process types by summing up the amounts of second loss material emission calculated for each product by the second emission calculation unit for each process type; a second contribution calculation unit that calculates a second contribution for each of a plurality of process types; The second discharge amount calculation unit For each of the multiple processes that are involved in manufacturing the product, The difference between the input amount of the product into the process and the amount of the product that has passed through the process is calculated as a second difference amount for the process of the product, and for each upstream process upstream from the process of the product, the CO generated in the upstream process is calculated. ２ The discharge amount is multiplied by the ratio of the second difference amount of the process to the input amount of the upstream process to obtain a third multiplication result, and the obtained third multiplication results are summed up to obtain: Calculate the amount of secondary waste material discharged in the process for the product in question, The second contribution calculation unit For each of the plurality of products, a first total amount of the product in the first amount of loss material discharged in each process of the product calculated by the first emission amount calculation unit or a second total amount of the product in the second amount of loss material discharged in each process of the product calculated by the second emission amount calculation unit is calculated; determining a third total weight by further summing the first total weights determined for each of the plurality of products, or a fourth total weight by further summing the second total weights determined for each of the plurality of products; When a predetermined second distribution ratio is β, a first multiplication result is obtained by multiplying the first total discharge amount of loss materials calculated by the first total discharge calculation unit by β, and a second multiplication result is obtained by multiplying the second total discharge amount of loss materials calculated by the second total discharge calculation unit by the subtraction result obtained by subtracting β from 1, thereby obtaining a second addition result, and dividing each of the obtained second addition results by the third total amount or the fourth total amount, Calculating the second contribution of the process type; The carbon dioxide emission calculation system according to claim 1 .

6. In a factory that can manufacture multiple types of products through multiple processes, ２ A carbon dioxide emission calculation method for calculating an emission amount, The plurality of steps includes a raw material for producing the product as one of the steps; a first emission calculation step of calculating, for each of the products, an amount of first loss material emitted in each of a plurality of processes that are performed when manufacturing the product; The first emission calculation step calculates, for each of a plurality of processes that are performed in manufacturing the product, a difference between an input amount of the product input into the process and a product amount of the product as a first difference amount for the process of the product, and calculates a CO emission amount generated in the process of the product. ２ The first loss material emission amount of the process of the product is calculated by multiplying the emission amount by the ratio of the first difference amount of the process of the product to the input amount of the process of the product. Carbon dioxide emissions calculation method.

7. In a factory that can manufacture multiple types of products through multiple processes, ２ A carbon dioxide emission calculation program for determining an emission amount, the carbon dioxide emission calculation program causing a computer to function as the carbon dioxide emission calculation system according to any one of claims 1 to 5.

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