Greenhouse gas emission accounting method, device, equipment and medium in iron and steel industry

Abstract

The invention relates to a steel industry greenhouse gas emission accounting method, device, equipment and medium, and belongs to the technical field of greenhouse gas emission accounting, and the steel industry greenhouse gas emission accounting method comprises the steps: determining the accounting boundary of greenhouse gas emission, and obtaining corresponding emission source statistical data, the accounting boundary comprises a fossil fuel combustion process and an industrial production process; the fossil fuel combustion process comprises a boiler combustion process, a coking process, a sintering process, an ironmaking process and other combustion processes, and the industrial production process comprises a flux decomposition process, a steelmaking carbon reduction process and an electric furnace steelmaking process; obtaining activity level data which are counted in the emission source statistical data, and calculating activity level data which are not independently counted in the emission source statistical data based on an energy balance principle; and calculating the greenhouse gas emission amount of each process in the accounting boundary based on an emission factor method. According to the invention, the integrity of data in the accounting process is ensured, so that the accounting precision is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of greenhouse gas emission accounting, and specifically relates to a method, device, equipment and medium for greenhouse gas emission accounting in the steel industry. Background Art

[0002] As an energy, mineral and other resource-intensive industry, the steel industry's carbon dioxide emissions account for a large proportion of the country's total emissions. As an important tool for quantifying emission levels and data support for policy making, the quality and accuracy requirements of emission inventories are gradually increasing. At the same time, it is required to accelerate the establishment of a unified and standardized carbon emission statistical accounting system.

[0003] The current method for calculating greenhouse gas emissions in the domestic steel industry usually combines coking, sintering, and ironmaking into energy activities, which makes it difficult to reflect the emission characteristics of different production links, and the data source is not unified and clear enough. At the same time, the data required for carbon verification of steel enterprises is relatively high. In the existing environmental management data, emission source statistical data are routinely reported by enterprises, and the data accuracy covers annual reports, quarterly reports and monthly reports. There are also special statistical tables for coking, sintering / pelletizing and other processes, and a complete quality control system is in place to ensure the accuracy and reliability of the data. Therefore, there is an urgent need for a method to fully utilize the existing normalized environmental management data to carry out greenhouse gas emission accounting in the steel industry to solve the technical problem of low accounting accuracy in existing technologies. Summary of the invention

[0004] In view of the above analysis, the embodiments of the present invention aim to provide a method, device, equipment and medium for calculating greenhouse gas emissions in the steel industry, so as to solve the technical problem of low calculation accuracy existing in the prior art.

[0005] The object of the present invention is achieved in that: The first embodiment of the present invention provides a method for calculating greenhouse gas emissions in the steel industry, comprising: Determine the accounting boundary of greenhouse gas emissions and obtain corresponding emission source statistical data, the accounting boundary includes fossil fuel combustion processes and industrial production processes; The fossil fuel combustion process includes boiler combustion process, coking process, sintering process, ironmaking process and other combustion processes, and the industrial production process includes flux decomposition process, steelmaking carbon reduction process and electric furnace steelmaking process; Obtain the activity level data that have been counted in the statistical data of the emission source, and calculate the activity level data that have not been independently counted in the statistical data of the emission source based on the energy balance principle; Calculate greenhouse gas emissions from each process in the accounting boundary based on the emission factor method.

[0006] Furthermore, the activity level data counted in the emission source statistical data include energy consumption and product output in boiler combustion process, coking process, sintering process, flux decomposition process, steelmaking process and electric furnace steelmaking process.

[0007] Furthermore, the emission source statistical data also include the total coal consumption of the whole plant, the total fuel coal consumption of the whole plant, the total fuel oil consumption of the whole plant, the total natural gas consumption of the whole plant and the total coke consumption of the whole plant.

[0008] Furthermore, the activity level data that are not independently counted in the emission source statistical data calculated based on the energy balance principle include: calculating the coal consumption of the ironmaking process based on the total coal consumption of the whole plant, the total fuel coal consumption of the whole plant and the coal consumption of the coking process; calculating the coke consumption of the ironmaking process based on the total coke consumption of the whole plant and the coke consumption of the sintering process; calculating the fuel coal consumption of other combustion processes based on the total fuel coal consumption of the whole plant, the fuel coal consumption of the boiler combustion process and the fuel coal consumption of the sintering process; calculating the fuel oil consumption of other combustion processes based on the total fuel oil consumption of the whole plant and the fuel oil consumption of the boiler combustion process; calculating the natural gas consumption of other combustion processes based on the total natural gas consumption of the whole plant and the natural gas consumption of the boiler combustion process.

[0009] Furthermore, the greenhouse gas emissions of each process in the accounting boundary are calculated based on the emission factor method, including: Based on the statistical activity data and the unindependent statistical activity data, as well as the emission factors of each process in the fossil fuel combustion process and the industrial production process, the greenhouse gas emissions of each process are calculated as follows: Greenhouse gas emissions from boiler combustion are expressed as: in, p Represents greenhouse gas types, including carbon dioxide, methane and nitrous oxide, i Indicates the type of fossil fuel, i =0 means fuel coal, i =1 means fuel oil and i =2 means natural gas, Indicates k Boiler for fossil fuels i The consumption of Indicates k boilers burning fossil fuels i When receiving the base low heat, Indicates k boilers burning fossil fuels i Greenhouse gases produced p Emission factors; The greenhouse gas emissions from the coking process are expressed as: in, Indicates n Coal consumption per coke oven, Indicates n The basic low calorific value received when a coke oven consumes coal. Indicates n The emission factor of carbon dioxide produced when a coke oven consumes coal is Indicates n Coke production per coke oven, Indicates n The minimum calorific value received when a coke oven produces coke. Indicates n Emission factor of carbon dioxide produced during the production of coke in coke ovens; The greenhouse gas emissions from the sintering process are expressed as: in, Indicates q Coal consumption of sintering machines, Indicates q The sintering machine receives the lowest calorific value when burning coal. Indicates q The emission factor of carbon dioxide produced by burning coal in a sintering machine is Indicates q Coke consumption of a sintering machine, Indicates q The sintering machine receives the lowest calorific value when burning coke. Indicates q Emission factor for carbon dioxide produced when burning coke in a sintering machine; Greenhouse gas emissions from the ironmaking process are expressed as: in, represents the total coal consumption of the whole plant, It represents the total fuel coal consumption of the whole plant. represents the coal consumption of all coke ovens, It indicates the minimum calorific value received when coal is consumed in the ironmaking process. It represents the emission factor of carbon dioxide produced when coal is consumed in the ironmaking process. Indicates the total coke consumption of the whole plant, Indicates the coke consumption of all sintering machines, It indicates the minimum calorific value received when consuming coke in the ironmaking process. The emission factor for carbon dioxide produced by the consumption of coke in the ironmaking process, represents the output of pig iron in the ironmaking process, Indicates the average carbon content of the produced pig iron; Greenhouse gas emissions from other combustion processes are expressed as: Among them, it means the first i The total fuel consumption, Indicates other combustion processes i The received basic low calorific value of this fuel, Represents emission factors for other combustion processes; The greenhouse gas emissions from the flux decomposition process are expressed as: in, Indicates the consumption of limestone as flux, represents the emission factor for limestone as flux, Indicates the consumption of dolomite as flux, represents the emission factor for dolomite as flux, Indicates the consumption of magnesite as flux, represents the emission factor for magnesite as flux; The greenhouse gas emissions from the steelmaking carbon reduction process are expressed as: in, represents crude steel production, Indicates the average carbon content of crude steel; The greenhouse gas emissions from the electric furnace steelmaking process are expressed as: in, Indicates the amount of scrap steel used in the electric furnace, Indicates the amount of electrode used per unit of scrap steel, represents the CO2 emission factor of the electrode.

[0010] Furthermore, it also includes: checking the data integrity, energy indicator accuracy, and plant-wide energy balance logic of the activity level data in the emission source statistical data, and checking the rationality of the greenhouse gas emission calculation results.

[0011] The second embodiment of the present invention provides a greenhouse gas emission accounting device for the steel industry, comprising: An accounting boundary determination module is used to determine the accounting boundary of greenhouse gas emissions and obtain corresponding emission source statistical data, wherein the accounting boundary includes fossil fuel combustion processes and industrial production processes; An activity level data acquisition and calculation module, used to acquire the activity level data that has been counted in the emission source statistical data, and calculate the activity level data that has not been independently counted in the emission source statistical data based on the energy balance principle; The greenhouse gas emissions accounting module is used to calculate the greenhouse gas emissions of each process in the accounting boundary based on the emission factor method.

[0012] A third aspect of the present invention provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the method for calculating greenhouse gas emissions in the steel industry described in any embodiment is implemented.

[0013] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the greenhouse gas emission accounting method for the steel industry as described in any one of the embodiments.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: The greenhouse gas emission accounting method for the steel industry provided by the present invention calculates the activity level data that are not independently counted in the emission source statistical data through the energy balance principle, and then calculates the greenhouse gas emissions of each process in the accounting boundary based on the emission factor method, thereby ensuring the integrity of the data in the accounting process, thereby improving the accounting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A flow chart of a method for calculating greenhouse gas emissions in the steel industry provided in Example 1 of the present invention; Figure 2 A schematic diagram of a greenhouse gas emission accounting device for the steel industry provided in Example 2 of the present invention; Figure 3 This is a schematic diagram of the electronic device architecture provided in Example 3 of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments disclosed in this disclosure can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] Example 1 A specific embodiment of the present invention, as Figure 1 As shown, a method for calculating greenhouse gas emissions in the steel industry is disclosed, comprising the following steps: S1. Determine the accounting boundary of greenhouse gas emissions and obtain corresponding emission source statistical data, where the accounting boundary includes fossil fuel combustion processes and industrial production processes; In this embodiment, the fossil fuel combustion process includes boiler combustion process, coking process, sintering process, ironmaking process and other combustion processes, and the industrial production process includes flux decomposition process, steelmaking carbon reduction process and electric furnace steelmaking process.

[0019] Specifically, the boiler combustion process involves the combustion of raw coal, natural gas and other fuels, which produces carbon dioxide, methane and nitrous oxide greenhouse gases; the coking process refers to the dry distillation of coal in a coke oven to produce coke, which produces carbon dioxide; the sintering process refers to the use of fuel coal and coke in the sintering of iron ore or the preparation of pellets, which produces carbon dioxide; the ironmaking process refers to the burning of coal and coke when smelting pig iron in a blast furnace, which produces carbon dioxide; other combustion processes refer to fuel combustion links that are not separately counted (such as auxiliary equipment in the plant area), which produce carbon dioxide; the flux decomposition process refers to the decomposition of fluxes such as limestone and dolomite, which produces carbon dioxide; the steelmaking carbon reduction process refers to the oxidation of carbon elements during the decarbonization of pig iron and steelmaking, which produces carbon dioxide; the electric furnace steelmaking process refers to the consumption of electrodes in an electric arc furnace, which produces carbon dioxide.

[0020] S2. Obtain the activity level data that have been counted in the statistical data of the emission source, and calculate the activity level data that have not been independently counted in the statistical data of the emission source based on the energy balance principle; In this embodiment, the activity level data in the emission source statistical data include energy consumption and product output in the boiler combustion process, coking process, sintering process, flux decomposition process, steelmaking process and electric furnace steelmaking process. The emission source statistical data also includes the total coal consumption of the whole plant, the total fuel coal consumption of the whole plant, the total fuel oil consumption of the whole plant, the total natural gas consumption of the whole plant and the total coke consumption of the whole plant.

[0021] Specifically, the activity level data of the boiler combustion process include "fuel type", "fuel consumption", "low calorific value", "carbon content per unit calorific value" and "carbon oxidation rate"; the activity level data of the coking process include "coal consumption" and "coke output"; the activity level data of the sintering process include "coal consumption", "coal low calorific value", "coke consumption" and "coke low calorific value"; the activity level data of the flux decomposition process include "dolomite consumption", "limestone consumption" and "magnesite consumption"; the activity level data of the steelmaking process include "pig iron consumption" and "crude steel output"; the activity level data of the electric furnace steelmaking process include "main raw and auxiliary materials".

[0022] As for the activity level data of ironmaking and other combustion processes that are not independently counted in the emission source statistics, it is necessary to calculate based on the energy balance principle, including: (1) The coal consumption of the ironmaking process is calculated based on the total coal consumption of the whole plant, the total fuel coal consumption of the whole plant and the coal consumption of the coking process; the coke consumption of the ironmaking process is calculated based on the total coke consumption of the whole plant and the coke consumption of the sintering process; Specifically, the coal consumption in the iron-making process is equal to the total coal consumption of the whole plant minus the total fuel coal consumption of the whole plant and the coal consumption of the coking process; the coke consumption in the iron-making process is equal to the total coke consumption of the whole plant minus the coke consumption of the sintering process.

[0023] (2) The coal consumption of other combustion processes is calculated based on the total coal consumption of the whole plant, the coal consumption of boiler combustion process and the coal consumption of sintering process; the oil consumption of other combustion processes is calculated based on the total oil consumption of the whole plant and the oil consumption of boiler combustion process; the natural gas consumption of other combustion processes is calculated based on the total natural gas consumption of the whole plant and the natural gas consumption of boiler combustion process.

[0024] Specifically, the fuel coal consumption of other combustion processes is equal to the total fuel coal consumption of the whole plant minus the fuel coal consumption of the boiler combustion process and the fuel coal consumption of the sintering process; the fuel oil consumption of other combustion processes is equal to the total fuel oil consumption of the whole plant minus the fuel oil consumption of the boiler combustion process; the natural gas consumption of other combustion processes is equal to the total natural gas consumption of the whole plant minus the natural gas consumption of the boiler combustion process.

[0025] S3. Calculate the greenhouse gas emissions of each process in the accounting boundary based on the emission factor method.

[0026] Step S3 specifically includes: Based on the statistical activity data and the unindependent statistical activity data, as well as the emission factors of each process in the fossil fuel combustion process and the industrial production process, the greenhouse gas emissions of each process are calculated as follows: (1) Greenhouse gas emissions from boiler combustion are expressed as: in, p Represents greenhouse gas types, including carbon dioxide, methane and nitrous oxide, i Indicates the type of fossil fuel, i =0 means fuel coal, i =1 means fuel oil and i =2 means natural gas, Indicates k Boiler for fossil fuels i The consumption of Indicates k boilers burning fossil fuels i When receiving the base low heat, Indicates k boilers burning fossil fuels i Greenhouse gases produced p Emission factors; (2) Greenhouse gas emissions from the coking process are expressed as: in, Indicates n Coal consumption per coke oven, Indicates n The basic low calorific value received when a coke oven consumes coal. Indicates n The emission factor of carbon dioxide produced when a coke oven consumes coal is Indicates n Coke production per coke oven, Indicates n The minimum calorific value received when a coke oven produces coke. Indicates n Emission factor of carbon dioxide produced during the production of coke in coke ovens; (3) Greenhouse gas emissions from the sintering process are expressed as: in, Indicates q Coal consumption of sintering machines, Indicates q The sintering machine receives the lowest calorific value when burning coal. Indicatesq The emission factor of carbon dioxide produced by burning coal in a sintering machine is Indicates q Coke consumption of a sintering machine, Indicates q The sintering machine receives the lowest calorific value when burning coke. Indicates q Emission factor for carbon dioxide produced when burning coke in a sintering machine; (4) Greenhouse gas emissions from the ironmaking process are expressed as: in, represents the total coal consumption of the whole plant, It represents the total fuel coal consumption of the whole plant. represents the coal consumption of all coke ovens, It indicates the minimum calorific value received when coal is consumed in the ironmaking process. It represents the emission factor of carbon dioxide produced when coal is consumed in the ironmaking process. Indicates the total coke consumption of the whole plant, Indicates the coke consumption of all sintering machines, It indicates the minimum calorific value received when consuming coke in the ironmaking process. The emission factor for carbon dioxide produced by the consumption of coke in the ironmaking process, represents the output of pig iron in the ironmaking process, Indicates the average carbon content of the produced pig iron; (5) Greenhouse gas emissions from other combustion processes are expressed as: Among them, it means the first i The total fuel consumption, Indicates other combustion processes i The received basic low calorific value of this fuel, Represents emission factors for other combustion processes; (6) Greenhouse gas emissions from the flux decomposition process are expressed as: in, Indicates the consumption of limestone as flux, represents the emission factor for limestone as flux, Indicates the consumption of dolomite as flux, represents the emission factor for dolomite as flux, Indicates the consumption of magnesite as flux, represents the emission factor for magnesite as flux; (7) Greenhouse gas emissions from the steelmaking carbon reduction process are expressed as: in, represents crude steel production, Indicates the average carbon content of crude steel; (8) Greenhouse gas emissions from the electric furnace steelmaking process are expressed as: in, Indicates the amount of scrap steel used in the electric furnace, Indicates the amount of electrode used per unit of scrap steel, represents the CO2 emission factor of the electrode.

[0027] In this embodiment, the greenhouse gas emission accounting method of the steel industry also includes: S4. Check the activity level data in the statistical data of the emission sources for data integrity, energy index accuracy, and plant-wide energy balance logic, as well as the rationality of the greenhouse gas emission calculation results.

[0028] Specifically, data integrity aims to check whether there are missing items in the emission source statistical data; energy indicator accuracy aims to check whether the fuel consumption should not include the energy consumption used as raw materials and materials. For example, coal is burned as fuel and also participates in production as raw materials, so the coal consumption of the whole plant should be greater than the fuel coal consumption of the whole plant; the logical verification process of the whole plant energy balance is: to balance the energy consumption data reported by the enterprise for the whole plant, and to balance the energy such as coal, fuel oil and natural gas reported by the enterprise for the whole plant. In the emission source statistics, in addition to reporting the total coal consumption of the whole plant, steel enterprises should also report the total fuel coal consumption, where the total fuel coal consumption includes boiler combustion and sintering processes, while the coal consumption of processes such as coking and ironmaking does not belong to fuel coal consumption. If it is found that the total fuel coal consumption of the whole plant reported by the enterprise is significantly higher than the total fuel coal consumption of boiler combustion and sintering processes, a specific analysis should be conducted, and the enterprise's fuel coal consumption can be recalculated if necessary; the rationality verification of the calculation results of greenhouse gas emissions aims to verify whether there is fuel consumption without exhaust gas pollutant emissions.

[0029] In some embodiments, it also includes verifying the statistical summary data of emission sources in a certain area using the energy balance sheet and macro data such as energy extraction, energy consumption and product output published by statistical units and statistical yearbooks. According to the energy balance sheet in the regional statistical yearbook, the energy use data is verified, and the raw and auxiliary materials and product output are verified using the main product data such as pig iron and crude steel output. If there is a large difference with the macro data, the reasons should be specifically analyzed and supplemented when necessary.

[0030] In certain embodiments, the greenhouse gas emission accounting method for the steel industry further includes: using the Monte Carlo method to perform uncertainty analysis using the total coal consumption of the entire plant, the activity level data of each process, and each emission factor.

[0031] Compared with the prior art, the greenhouse gas emission accounting method for the steel industry provided in this embodiment calculates the activity level data that are not independently counted in the emission source statistical data through the energy balance principle, and then calculates the greenhouse gas emissions of each process in the accounting boundary based on the emission factor method, thereby ensuring the integrity of the data in the accounting process and improving the accounting accuracy.

[0032] Example 2 This embodiment provides a greenhouse gas emission accounting device for the steel industry, such as Figure 2 As shown, including: An accounting boundary determination module is used to determine the accounting boundary of greenhouse gas emissions and obtain corresponding emission source statistical data, wherein the accounting boundary includes fossil fuel combustion processes and industrial production processes; An activity level data acquisition and calculation module, used to acquire the activity level data that has been counted in the emission source statistical data, and calculate the activity level data that has not been independently counted in the emission source statistical data based on the energy balance principle; The greenhouse gas emissions accounting module is used to calculate the greenhouse gas emissions of each process in the accounting boundary based on the emission factor method.

[0033] In certain embodiments, the greenhouse gas emission accounting device for the steel industry further includes: A verification module, used to verify the activity level data in the emission source statistical data for data integrity, energy index accuracy, and plant-wide energy balance logic, as well as to verify the rationality of greenhouse gas emission calculation results; The uncertainty analysis module is used to perform uncertainty analysis using the Monte Carlo method using the total coal consumption of the entire plant, the activity level data of each process, and each emission factor.

[0034] Example 3 This embodiment provides an electronic device, such as Figure 3 As shown, it includes a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the greenhouse gas emission accounting method for the steel industry as described in any of the above embodiments is implemented.

[0035] Example 4 This embodiment provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the method for calculating greenhouse gas emissions in the steel industry as described in any of the above embodiments is implemented.

[0036] Computer readable storage media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0037] The professionals should further realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to the function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0038] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0039] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for calculating greenhouse gas emissions in the steel industry, characterized in that: include: Determine the accounting boundary of greenhouse gas emissions and obtain corresponding emission source statistical data, the accounting boundary includes fossil fuel combustion processes and industrial production processes; The fossil fuel combustion process includes boiler combustion process, coking process, sintering process, ironmaking process and other combustion processes, and the industrial production process includes flux decomposition process, steelmaking carbon reduction process and electric furnace steelmaking process; Obtain the activity level data that have been counted in the statistical data of the emission source, and calculate the activity level data that have not been independently counted in the statistical data of the emission source based on the energy balance principle; Calculate greenhouse gas emissions from each process in the accounting boundary based on the emission factor method.

2. The greenhouse gas emission accounting method for the steel industry according to claim 1 is characterized in that: The activity level data included in the emission source statistical data include energy consumption and product output in boiler combustion process, coking process, sintering process, flux decomposition process, steelmaking process and electric furnace steelmaking process.

3. The greenhouse gas emission accounting method for the steel industry according to claim 1, characterized in that: The emission source statistical data also include the total coal consumption of the whole plant, the total fuel coal consumption of the whole plant, the total fuel oil consumption of the whole plant, the total natural gas consumption of the whole plant and the total coke consumption of the whole plant.

4. The greenhouse gas emission accounting method for the steel industry according to claim 3 is characterized in that: The activity level data that are not independently counted in the emission source statistics calculated based on the energy balance principle include: The coal consumption of the ironmaking process is calculated based on the total coal consumption of the whole plant, the total fuel coal consumption of the whole plant and the coal consumption of the coking process; the coke consumption of the ironmaking process is calculated based on the total coke consumption of the whole plant and the coke consumption of the sintering process; The fuel coal consumption of other combustion processes is calculated based on the total fuel coal consumption of the whole plant, the fuel coal consumption of the boiler combustion process and the fuel coal consumption of the sintering process; the fuel oil consumption of other combustion processes is calculated based on the total fuel oil consumption of the whole plant and the fuel oil consumption of the boiler combustion process; the natural gas consumption of other combustion processes is calculated based on the total natural gas consumption of the whole plant and the natural gas consumption of the boiler combustion process.

5. The greenhouse gas emission accounting method for the steel industry according to claim 4 is characterized in that: Calculate greenhouse gas emissions from each process in the accounting boundary based on the emission factor method, including: Based on the statistical activity data and the unindependent statistical activity data, as well as the emission factors of each process in the fossil fuel combustion process and the industrial production process, the greenhouse gas emissions of each process are calculated as follows: Greenhouse gas emissions from boiler combustion are expressed as: in, p Represents greenhouse gas types, including carbon dioxide, methane and nitrous oxide, i Indicates the type of fossil fuel, i =0 means fuel coal, i =1 means fuel oil and i =2 means natural gas, Indicates k Boiler for fossil fuels i The consumption of Indicates k boilers burning fossil fuels i When receiving the base low heat, Indicates k boilers burning fossil fuels i Greenhouse gases produced p Emission factors; The greenhouse gas emissions from the coking process are expressed as: in, Indicates n Coal consumption per coke oven, Indicates n The basic low calorific value received when a coke oven consumes coal. Indicates n The emission factor of carbon dioxide produced when a coke oven consumes coal is Indicates n Coke production per coke oven, Indicates n The minimum calorific value received when a coke oven produces coke. Indicates n Emission factor of carbon dioxide produced during the production of coke in coke ovens; The greenhouse gas emissions from the sintering process are expressed as: in, Indicates q Coal consumption of sintering machines, Indicates q The sintering machine receives the lowest calorific value when burning coal. Indicates q The emission factor of carbon dioxide produced by burning coal in a sintering machine is Indicates q Coke consumption of a sintering machine, Indicates q The sintering machine receives the lowest calorific value when burning coke. Indicates q Emission factor for carbon dioxide produced when burning coke in a sintering machine; Greenhouse gas emissions from the ironmaking process are expressed as: in, represents the total coal consumption of the whole plant, It represents the total fuel coal consumption of the whole plant. represents the coal consumption of all coke ovens, It indicates the minimum calorific value received when coal is consumed in the ironmaking process. It represents the emission factor of carbon dioxide produced when coal is consumed in the ironmaking process. Indicates the total coke consumption of the whole plant, Indicates the coke consumption of all sintering machines, It indicates the minimum calorific value received when consuming coke in the ironmaking process. The emission factor for carbon dioxide produced by the consumption of coke in the ironmaking process, represents the output of pig iron in the ironmaking process, Indicates the average carbon content of the produced pig iron; Greenhouse gas emissions from other combustion processes are expressed as: Among them, it means the first i The total fuel consumption, Indicates other combustion processes i The received basic low calorific value of this fuel, Represents emission factors for other combustion processes; The greenhouse gas emissions from the flux decomposition process are expressed as: in, Indicates the consumption of limestone as flux, represents the emission factor for limestone as flux, Indicates the consumption of dolomite as flux, represents the emission factor for dolomite as flux, Indicates the consumption of magnesite as flux, represents the emission factor for magnesite as flux; The greenhouse gas emissions from the steelmaking carbon reduction process are expressed as: in, represents crude steel production, Indicates the average carbon content of crude steel; The greenhouse gas emissions from the electric furnace steelmaking process are expressed as: in, Indicates the amount of scrap steel used in the electric furnace, Indicates the amount of electrode used per unit of scrap steel, represents the CO2 emission factor of the electrode.

6. The greenhouse gas emission accounting method for the steel industry according to any one of claims 1 to 5, characterized in that: Also includes: The activity level data in the statistical data of the emission sources are checked for data integrity, energy indicator accuracy, and plant-wide energy balance logic, as well as the rationality of the greenhouse gas emission calculation results.

7. A greenhouse gas emission accounting device for the steel industry, characterized in that: The device comprises: An accounting boundary determination module is used to determine the accounting boundary of greenhouse gas emissions and obtain corresponding emission source statistical data, wherein the accounting boundary includes fossil fuel combustion processes and industrial production processes; An activity level data acquisition and calculation module, used to acquire the activity level data that has been counted in the emission source statistical data, and calculate the activity level data that has not been independently counted in the emission source statistical data based on the energy balance principle; The greenhouse gas emissions accounting module is used to calculate the greenhouse gas emissions of each process in the accounting boundary based on the emission factor method.

8. An electronic device, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the greenhouse gas emission accounting method for the steel industry as described in any one of claims 1 to 6 is implemented.

9. A storage medium, characterized in that: A computer program is stored thereon, and when the program is executed by a processor, the method for calculating greenhouse gas emissions in the steel industry as described in any one of claims 1 to 6 is implemented.

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