Carbon emissions assessment method and equipment for steel gas production and consumption

Abstract

The present invention provides a method and device for evaluating carbon emissions in the production and consumption of steel gas. The method comprises: step 1, collecting steel gas samples; step 2, analyzing the components of the collected steel gas; step 3, calculating and obtaining the carbon emission factor of steel gas; step 4, calculating and obtaining the carbon emission factor of steel gas power generation; step 5, evaluating the carbon emissions corresponding to the production and consumption of steel gas in all processes based on the steel gas carbon emission factor and the steel gas power generation carbon emission factor. The present invention distinguishes the process carbon emission properties and carbon sequestration properties of gas, fully considers the gas production and consumption in each production process, and improves the accuracy of carbon emission calculation in the steel industry. The proposed gas process carbon emission factor and gas power generation carbon emission factor can be used for horizontal comparison of the steel smelting technology level and gas resource utilization level between different steel companies, which helps guide companies to improve their professional and technical level.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of carbon emission control technology, and in particular to a method and device for evaluating carbon emissions in steel gas production and consumption. Background Art

[0002] Currently, steel production is one of the important industrial activities in major countries around the world. Accurately assessing the carbon emissions of the entire process and each production process of steel production enterprises is an important basis for issuing, verifying, clearing and trading carbon quotas for key enterprises in the steel industry. However, there are many problems with the current carbon emission assessment of the steel industry. For example, the carbon emission factor of metallurgical gas includes all carbon-containing substances, and uniformly defines the properties of metallurgical gas as "fossil energy", artificially raising the carbon emission factor of gas, and failing to distinguish well between the carbon emission properties and carbon sequestration properties of gas in the production process. In the process of calculating process carbon emissions, the metallurgical gas generated by the process production is not calculated when it is used in other processes. When the gas consumed by the process generates self-generated electricity, its carbon emission factor is set to 0. Although the above processing method greatly simplifies the workload of carbon emission accounting in the steel industry and improves work efficiency, it is not conducive to a detailed analysis of the actual carbon emissions of each process of steel enterprises, nor is it conducive to grasping the actual smelting level and gas resource utilization efficiency of steel enterprises.

[0003] Based on this, the present invention develops a method and equipment for evaluating carbon emissions in steel gas production and consumption, which can effectively solve related problems in the existing carbon emission calculation process in the steel industry. Summary of the Invention

[0004] In response to the above-mentioned problems existing in the prior art, an embodiment of the present invention provides a method and device for evaluating carbon emissions in steel gas production and consumption.

[0005] In a first aspect, an embodiment of the present invention provides a method for assessing carbon emissions in steel gas production and consumption, comprising: step 1, collecting steel gas samples; step 2, analyzing the components of the collected steel gas; step 3, calculating and obtaining the steel gas carbon emission factor; step 4, calculating and obtaining the steel gas power generation carbon emission factor; step 5, evaluating the carbon emissions corresponding to the steel gas production and consumption in all processes based on the steel gas carbon emission factor and the steel gas power generation carbon emission factor.

[0006] Based on the contents of the above method embodiments, the method for assessing carbon emissions in steel gas production and consumption provided in the embodiments of the present invention, step 1 specifically includes: systematically collecting gas resources generated during the steel smelting process of coke ovens, blast furnaces and converters, including coke oven gas, blast furnace gas and converter gas; each sampling interval is 3 hours, the number of sampling times is not less than 3 times, and the volume of each sampling is not less than 1 liter.

[0007] Based on the contents of the above method embodiments, the carbon emissions assessment method for steel gas production and consumption provided in the embodiments of the present invention, step 2 specifically includes: analyzing the proportions of all carbon-containing substances in coke oven gas, blast furnace gas and converter gas, including carbon dioxide, carbon monoxide and methane, under normal temperature and pressure conditions; the final proportion of gas components is taken as the average value of the test results of multiple samples.

[0008] Based on the contents of the above method embodiments, the method for assessing carbon emissions in steel gas production and consumption provided in the embodiments of the present invention, step 3 specifically includes: using the element balance method to create a real gas carbon emission factor; considering the process carbon emission properties and carbon fixation properties of the gas respectively, wherein the carbon dioxide in the gas is attributed to the carbon emissions generated by the gas production process, and is included in the gas process carbon emission factor; the total amount of carbon dioxide converted from the carbon-containing combustible components in the gas by the element balance method is used as the gas carbon fixation carbon emission factor, which is used to calculate the carbon emissions generated by related production processes that consume gas for incineration for heating.

[0009] Based on the contents of the above method embodiments, the carbon emissions assessment method for steel gas production and consumption provided in the embodiments of the present invention, step 4 specifically includes: calculating the actual gas power generation carbon emission factor of each steel enterprise based on the actual production data of the steel enterprise; using the total gas power generation of the steel enterprise as the denominator and the total carbon emissions of all types of gas consumed as the numerator, to obtain the average carbon emission factor of gas power generation for each steel enterprise.

[0010] Based on the contents of the above method embodiments, the method for evaluating carbon emissions in steel gas production and consumption provided in the embodiments of the present invention, step 5 specifically includes: the carbon emissions corresponding to steel gas production and consumption in all processes include three parts, namely, the carbon emissions corresponding to gas production, the carbon emissions corresponding to gas incineration and use, and the carbon emissions corresponding to gas power generation electricity consumption.

[0011] Based on the content of the above method embodiment, the carbon emissions assessment method for steel gas production and consumption provided in the embodiment of the present invention includes the carbon emissions corresponding to gas production, the carbon emissions corresponding to gas incineration, and the carbon emissions corresponding to gas power generation, including:

[0012]

[0013] Among them, E 煤气 V is the total carbon emission corresponding to the production and consumption of process gas; i-过程 is the production output of the i-th type of gas; EF i-过程 is the process carbon emission factor of the i-th coal gas; V i-焚烧 is the amount of gas used in combustion of type i; EF i-固碳 is the carbon emission factor of the i-th coal gas; AD 电 The amount of gas power generation consumed in the process; EF发电 is the carbon emission factor of gas-fired power generation; n is the total number of gas types.

[0014] In the second aspect, an embodiment of the present invention provides a device for evaluating carbon emissions in steel gas production and consumption, including: a first main module, used to implement step 1, collecting steel gas samples; a second main module, used to implement step 2, analyzing the components of the collected steel gas; a third main module, used to implement step 3, calculating and obtaining the steel gas carbon emission factor; a fourth main module, used to implement step 4, calculating and obtaining the steel gas power generation carbon emission factor; a fifth main module, used to implement step 5, evaluating the carbon emissions corresponding to the steel gas production and consumption in all processes based on the steel gas carbon emission factor and the steel gas power generation carbon emission factor.

[0015] In a third aspect, an embodiment of the present invention provides an electronic device, including:

[0016] at least one processor; and

[0017] at least one memory communicatively coupled to the processor, wherein:

[0018] The memory stores program instructions that can be executed by the processor, and the processor calls the program instructions to execute the carbon emission assessment method in steel gas production and consumption provided by any one of the various implementation methods of the first aspect.

[0019] In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, which stores computer instructions, and the computer instructions enable a computer to execute the carbon emissions assessment method in steel gas production and consumption provided by any one of the various implementation methods of the first aspect.

[0020] The carbon emission assessment method and equipment for steel gas production and consumption provided in the embodiments of the present invention distinguish between the process carbon emission properties and carbon fixation properties of gas, fully consider the gas production and consumption in each production process, and improve the accuracy of carbon emission calculations in the steel industry. The proposed gas process carbon emission factor and gas power generation carbon emission factor can be used for horizontal comparison of the steel smelting technology levels and gas resource utilization levels among different steel companies, which helps guide companies to improve their professional and technical levels. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A flow chart of a method for assessing carbon emissions from steel gas production and consumption provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of a device for assessing carbon emissions in steel gas production and consumption provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the physical structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0025] 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. Based on the embodiments of 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. In addition, the technical features in the various embodiments or single embodiments provided by the present invention can be arbitrarily combined with each other to form a feasible technical solution. This combination is not restricted by the sequence of steps and / or structural composition mode, but must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0026] Develop a method for evaluating the carbon emissions corresponding to the production and consumption of steel gas. By collecting steel gas samples on site and conducting gas composition analysis, the proportions of various carbon-containing substances in steel gas, such as carbon dioxide, carbon monoxide, and methane, are mastered. Based on the element balance method, the process carbon emission properties and carbon fixation properties of steel gas are separated to obtain an accurate carbon emission factor for steel gas. At the same time, based on the total self-generated electricity of steel plant gas, the carbon emission factor for power generation of steel gas is introduced and obtained. Through the above operations, an accurate evaluation of the carbon emissions corresponding to the production and consumption of steel gas is achieved. Based on this idea, an embodiment of the present invention provides a method for evaluating carbon emissions in the production and consumption of steel gas, see Figure 1 The method includes: step 1, collecting steel gas samples; step 2, analyzing the components of the collected steel gas; step 3, calculating and obtaining the steel gas carbon emission factor (including the gas process carbon emission factor and the gas carbon sequestration carbon emission factor); step 4, calculating and obtaining the steel gas power generation carbon emission factor; step 5, evaluating the carbon emissions corresponding to the steel gas production and consumption in all processes based on the steel gas carbon emission factor and the steel gas power generation carbon emission factor.

[0027] Based on the content of the above method embodiment, as an optional embodiment, the carbon emissions assessment method for steel gas production and consumption provided in the embodiment of the present invention, step 1 specifically includes: systematically collecting gas resources generated during the steel smelting process of coke ovens, blast furnaces and converters, including coke oven gas, blast furnace gas and converter gas; each sampling interval is 3 hours, the number of sampling times is not less than 3 times, and the volume of each sampling is not less than 1 liter.

[0028] Based on the content of the above method embodiment, as an optional embodiment, the carbon emissions assessment method for steel gas production and consumption provided in the embodiment of the present invention, step 2 specifically includes: analyzing the proportion of all carbon-containing substances in coke oven gas, blast furnace gas and converter gas under normal temperature and pressure conditions, including carbon dioxide, carbon monoxide and methane; the final proportion of gas components is taken as the average value of the test results of multiple samples.

[0029] Based on the content of the above method embodiment, as an optional embodiment, the carbon emissions assessment method for steel gas production and consumption provided in the embodiment of the present invention, step 3 specifically includes: using the element balance method to create a real gas carbon emission factor; considering the process carbon emission properties and carbon fixation properties of the gas respectively, wherein the carbon dioxide in the gas is attributed to the carbon emissions generated by the gas production process and is no longer included in the gas carbon emission factor; the total amount of carbon dioxide converted from the carbon-containing combustible components in the gas by the element balance method is used as the real carbon emission factor corresponding to the gas, which is used to calculate the carbon emissions generated by the relevant production processes that consume gas for incineration for heating.

[0030] Specifically, the carbon emission factor of the coal gas process is:

[0031]

[0032] Among them, EF 过程 is the carbon emission factor of the gas production process; V co2 It is the volume percentage of carbon dioxide in coal gas at normal temperature and pressure.

[0033] According to formula (1), the process carbon emission factors of coke oven gas, blast furnace gas and converter gas are evaluated respectively. The process carbon emission factor of gas is used to reflect the technological level of gas production process. The more advanced the smelting level, the lower the process carbon emission factor of gas.

[0034] Carbon emission factor of coal gas carbon sequestration:

[0035]

[0036] Among them, EF 固碳 is the carbon emission factor of coal gas carbon sequestration; V co V is the volume percentage of carbon monoxide in coal gas at normal temperature and pressure; CH4is the volume fraction of CH4 in coal gas at room temperature and pressure. Evaluate the carbon sequestration emission factors of coke oven gas, blast furnace gas, and converter gas according to formula (2). The evaluation of the carbon sequestration emission factor of coal gas is based on the carbon-containing components carbon monoxide and methane. If other combustible carbon-containing components are produced due to different smelting processes, refer to formula (2) and add the corresponding component ratio.

[0037] Based on the content of the above method embodiment, as an optional embodiment, the carbon emissions assessment method for steel gas production and consumption provided in the embodiment of the present invention, step 4 specifically includes: calculating the actual gas power generation carbon emission factor of each steel enterprise based on the actual production data of the steel enterprise; using the total gas power generation of the steel enterprise as the denominator and the total carbon emissions of all types of gas consumed as the numerator, to obtain the average carbon emission factor of gas power generation for each steel enterprise.

[0038] Specifically, the carbon emission factors for gas-fired power generation include:

[0039]

[0040] EF 发电 is the carbon emission factor of gas power generation; E 发电 The self-generated electricity generated by all coal gas in the steel enterprise's self-owned power plant. Since all coal gas resources in the self-owned power plant are mixed before power generation, it is impossible to evaluate the carbon emission factor corresponding to the self-generated electricity of each type of coal gas. i is the consumption of type i gas used in self-provided power plants; EF i-固碳 is the carbon sequestration emission factor of the i-th coal gas; n is the total number of coal gas types.

[0041] Based on the content of the above method embodiment, as an optional embodiment, the carbon emissions assessment method for steel gas production and consumption provided in the embodiment of the present invention, step 5 specifically includes: the carbon emissions corresponding to the steel gas production and consumption in all processes include three parts, namely, the carbon emissions corresponding to gas production, the carbon emissions corresponding to gas incineration and use, and the carbon emissions corresponding to gas power generation electricity consumption.

[0042] Based on the content of the above method embodiment, as an optional embodiment, the method for assessing carbon emissions from steel gas production and consumption provided in the embodiment of the present invention includes the following: carbon emissions corresponding to gas production, carbon emissions corresponding to gas incineration, and carbon emissions corresponding to gas power generation.

[0043]

[0044] Among them, E 煤气 V is the total carbon emission corresponding to the production and consumption of process gas; i-过程 is the production output of the i-th type of gas; EF i-过程 is the process carbon emission factor of the i-th coal gas; Vi-焚烧 is the amount of gas used in combustion of type i; EF i-固碳 is the carbon emission factor of the i-th coal gas; AD 电 The amount of gas power generation consumed in the process; EF 发电 is the carbon emission factor of gas-fired power generation; n is the total number of gas types.

[0045] The carbon emission assessment method for steel gas production and consumption provided by the embodiment of the present invention distinguishes the process carbon emission properties from the carbon fixation properties of gas, fully considers the gas production and consumption in each production process, and improves the accuracy of carbon emission calculations in the steel industry. The proposed gas process carbon emission factor and gas power generation carbon emission factor can be used for horizontal comparison of the steel smelting technology levels and gas resource utilization levels among different steel companies, which helps guide companies to improve their professional and technical levels.

[0046] In another example, taking a large steel plant with an annual output of approximately 10 million tons as an example, samples of coke oven gas, blast furnace gas, and converter gas were collected from the steel plant three times, each sampled 3 hours apart, and 2 L was sampled each time. The carbon content of the collected samples was analyzed by GC-MS, and the average value was taken. The analysis results are shown in Table 1:

[0047] Table 1

[0048] category CO <![CDATA[CO2]]> <![CDATA[CH4]]> coke oven gas 7.0％ 2.5％ 26.0％ blast furnace gas 24.0％ 18.0％ 0 converter gas 47.5％ 17.5％ 0

[0049] Based on the chemical composition of steel gas and the included evaluation formula, the carbon emission factor of steel gas is evaluated and shown in Table 2:

[0050] Table 2

[0051] category <![CDATA[Process carbon emission factor (tCO2 / 10,000 Nm 3 )]]> <![CDATA[Carbon sequestration carbon emission factor (tCO2 / 10,000 Nm 3 )]]> coke oven gas 0.4911 6.4821 blast furnace gas 3.5357 4.7143 converter gas 3.4375 9.3304

[0052] According to statistics, the steel plant generates 3,752,100 MW·h of electricity annually through coal gas consumption, of which 770.18 million Nm of coke oven gas is consumed. 3 , blast furnace gas 410571 million Nm 3 , converter gas 894.04 million Nm 3 According to the evaluation formula, the carbon emission factor of the steel plant's coal gas power generation is EF 发电 =0.87tCO2 / MW·h.

[0053] Table 3 shows the material input and output of coal gas resources and coal gas power generation consumption of steel enterprises. The carbon emissions corresponding to the coal gas production and consumption in each process are evaluated according to formula (4);

[0054] Table 3

[0055]

[0056] The assessment results show that ironmaking, coking and steel rolling are the three process links with the largest carbon emissions from coal gas production and consumption, with carbon emissions of 10.54 million, 2.47 million and 2.41 million tons respectively; the blast furnace gas produced in the ironmaking link generates more carbon emissions during the coal gas production process, and most of the blast furnace gas is recycled for incineration and heating in the blast furnace system, resulting in carbon emissions from the use of coal gas; the steel rolling link consumes more blast furnace gas and gas-fired power generation, resulting in higher carbon emissions, and the traditional assessment method does not include the carbon emissions corresponding to coal gas consumption, resulting in a significantly lower carbon emission assessment for the steel rolling link; the coking link has higher carbon emissions corresponding to coal gas production and consumption due to the production and consumption of coke oven gas, the consumption of other coal gases, and the consumption of coal gas-fired power generation.

[0057] The implementation basis of each embodiment of the present invention is to implement programmed processing through a device with processor functions. Therefore, in engineering practice, the technical solutions and functions of each embodiment of the present invention can be encapsulated into various modules. Based on this reality, on the basis of the above embodiments, an embodiment of the present invention provides a device for evaluating carbon emissions in steel gas production and consumption, which is used to execute the method for evaluating carbon emissions in steel gas production and consumption in the above method embodiments. Figure 2 The device includes: a first main module, used to implement step 1, collecting steel gas samples; a second main module, used to implement step 2, analyzing the components of the collected steel gas; a third main module, used to implement step 3, calculating and obtaining the steel gas carbon emission factor; a fourth main module, used to implement step 4, calculating and obtaining the steel gas power generation carbon emission factor; a fifth main module, used to implement step 5, evaluating the carbon emissions corresponding to the steel gas production and consumption in all processes based on the steel gas carbon emission factor and the steel gas power generation carbon emission factor.

[0058] The carbon emission assessment device for steel gas production and consumption provided by the embodiment of the present invention adopts Figure 2 Several modules in it distinguish the process carbon emission properties and carbon fixation properties of coal gas, fully consider the coal gas production and consumption in each production process, and improve the accuracy of carbon emission calculations in the steel industry. The proposed coal gas process carbon emission factor and coal gas power generation carbon emission factor can be used for horizontal comparison of the steel smelting technology level and coal gas resource utilization level among different steel companies, which helps to guide enterprises to improve their professional and technical level.

[0059] It should be noted that the device in the device embodiment provided by the present invention can be used to implement the method in the above-mentioned method embodiment as well as the method in other method embodiments provided by the present invention. The only difference is that the corresponding functional modules are set. The principle is basically the same as the principle of the above-mentioned device embodiment provided by the present invention. As long as those skilled in the art refer to the specific technical solutions in other method embodiments on the basis of the above-mentioned device embodiment, obtain the corresponding technical means and the technical solutions composed of these technical means by combining technical features, and ensure the practicality of the technical solutions, they can improve the device in the above-mentioned device embodiment to obtain the corresponding device class embodiment, thereby obtaining the corresponding device class embodiment for implementing the methods in other method class embodiments. For example:

[0060] Based on the contents of the above-mentioned device embodiment, as an optional embodiment, the carbon emissions assessment device for steel gas production and consumption provided in the embodiment of the present invention also includes: a first submodule, used to implement step 1 specifically including: systematically collecting gas resources generated during the steel smelting process of coke ovens, blast furnaces and converters, including coke oven gas, blast furnace gas and converter gas; each sampling interval is 3 hours, the number of sampling times is not less than 3 times, and the volume of each sampling is not less than 1 liter.

[0061] Based on the contents of the above-mentioned device embodiment, as an optional embodiment, the carbon emissions assessment device for steel gas production and consumption provided in the embodiment of the present invention further includes: a second submodule, which is used to implement step 2, specifically including: analyzing the proportion of all carbon-containing substances in coke oven gas, blast furnace gas and converter gas, including carbon dioxide, carbon monoxide and methane, under normal temperature and pressure conditions; the final proportion of gas components is the average value of the test results of multiple samples.

[0062] Based on the content of the above-mentioned device embodiment, as an optional embodiment, the carbon emission assessment device for steel gas production and consumption provided in the embodiment of the present invention further includes: a third submodule, which is used to implement step 3, specifically including: using the element balance method to create a real gas carbon emission factor; considering the process carbon emission properties and carbon fixation properties of the gas respectively, wherein the carbon dioxide in the gas is attributed to the carbon emissions generated by the gas production process, and is included in the gas process carbon emission factor; the total amount of carbon dioxide converted from the carbon-containing combustible components in the gas by the element balance method is used as the carbon fixation carbon emission factor of the gas, which is used to calculate the carbon emissions generated by the relevant production processes that consume gas for incineration for heating.

[0063] Based on the contents of the above-mentioned device embodiment, as an optional embodiment, the carbon emission assessment device for steel gas production and consumption provided in the embodiment of the present invention further includes: a fourth submodule, which is used to implement step 4, specifically including: calculating the actual gas power generation carbon emission factor of each steel enterprise based on the actual production data of the steel enterprise; using the total gas power generation of the steel enterprise as the denominator and the total carbon emissions of all types of gas consumed as the numerator to obtain the average carbon emission factor of gas power generation for each steel enterprise.

[0064] Based on the content of the above-mentioned device embodiment, as an optional embodiment, the carbon emissions assessment device for steel gas production and consumption provided in the embodiment of the present invention also includes: a fifth submodule, which is used to implement step 5, specifically including: the carbon emissions corresponding to steel gas production and consumption in all processes include three parts, namely, the carbon emissions corresponding to gas production, the carbon emissions corresponding to gas incineration and use, and the carbon emissions corresponding to gas power generation electricity consumption.

[0065] Based on the content of the above device embodiment, as an optional embodiment, the carbon emissions assessment device for steel gas production and consumption provided in the embodiment of the present invention further includes: a sixth submodule for realizing the carbon emissions corresponding to the gas production, the carbon emissions corresponding to the gas incineration, and the carbon emissions corresponding to the gas power generation, including:

[0066]

[0067] Among them, E 煤气 V is the total carbon emission corresponding to the production and consumption of process gas; i-过程 is the production output of the i-th type of gas; EF i-过程 is the process carbon emission factor of the i-th coal gas; V i-焚烧 is the amount of gas used in combustion of type i; EF i-固碳 is the carbon emission factor of the i-th coal gas; AD 电 The amount of gas power generation consumed in the process; EF 发电 is the carbon emission factor of gas-fired power generation; n is the total number of gas types.

[0068] The method of the embodiment of the present invention is implemented by electronic devices, so it is necessary to introduce the relevant electronic devices. Based on this purpose, the embodiment of the present invention provides an electronic device, such as Figure 3As shown, the electronic device includes: at least one processor, a communications interface, at least one memory, and a communications bus, wherein the at least one processor, the communications interface, and the at least one memory communicate with each other via the communications bus. The at least one processor can call logic instructions in the at least one memory to execute all or part of the steps of the methods provided in the aforementioned method embodiments.

[0069] In addition, the logic instructions in the at least one memory mentioned above can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each method embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0070] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0071] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiment.

[0072] The flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions and operations of the systems, methods and computer program products according to multiple embodiments of the present invention. Based on this understanding, each box in the flowchart or block diagram can represent a module, program segment or part of the code, and the module, program segment or part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, or sometimes in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0073] It should be noted that the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the elements defined by the phrase "comprise..." do not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the elements.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for assessing carbon emissions from steel gas production and consumption, characterized in that: include: Step 1, collecting steel gas samples; Step 2: Analyze the components of the collected steel gas; Step 3, calculate and obtain the carbon emission factor of steel gas; Step 3 specifically includes: creating a realistic coal gas carbon emission factor using the element balance method; considering the process carbon emission properties and carbon sequestration properties of the coal gas respectively, wherein the carbon dioxide in the coal gas is classified as carbon emissions generated by the coal gas production process and included in the coal gas process carbon emission factor; the total amount of carbon dioxide converted from the carbon-containing combustible components in the coal gas using the element balance method is used as the coal gas carbon sequestration carbon emission factor, which is used to calculate the carbon emissions generated by related production processes that consume coal gas for incineration and heating; Step 4: Calculate and obtain the carbon emission factor of steel coal gas power generation; Step 4 specifically includes: calculating the actual carbon emission factor of coal gas power generation for each steel enterprise based on the actual production data of the steel enterprise; using the total coal gas power generation of the steel enterprise as the denominator and the total carbon emissions of all types of coal gas consumed as the numerator to obtain the average carbon emission factor of coal gas power generation for each steel enterprise; Step 5: Evaluate the carbon emissions corresponding to the production and consumption of steel gas in all processes based on the steel gas carbon emission factor and the steel gas power generation carbon emission factor. The carbon emissions corresponding to the production and consumption of steel gas in all processes include three parts: carbon emissions corresponding to gas production, carbon emissions corresponding to gas incineration, and carbon emissions corresponding to gas power generation. The carbon emissions corresponding to coal gas production, coal gas incineration, and coal gas power generation include: in, is the total carbon emissions corresponding to the production and consumption of process gas; is the production output of type i gas; is the process carbon emission factor of the i-th coal gas; is the amount of gas used in combustion of type i; is the carbon emission factor for the carbon sequestration of the i-th coal gas; The amount of gas-generated electricity consumed by the process; is the carbon emission factor of gas-fired power generation; n is the total number of gas types.

2. The carbon emission assessment method for steel gas production and consumption according to claim 1 is characterized in that: Step 1 specifically includes: systematically collecting gas resources generated during the steel smelting process of coke ovens, blast furnaces and converters, including coke oven gas, blast furnace gas and converter gas; each sampling interval is 3 hours, the number of sampling times is not less than 3 times, and the volume of each sampling is not less than 1 liter.

3. The carbon emission assessment method for steel gas production and consumption according to claim 2 is characterized in that: Step 2 specifically includes: analyzing the proportion of all carbon-containing substances in coke oven gas, blast furnace gas and converter gas under normal temperature and pressure, including carbon dioxide, carbon monoxide and methane; the final proportion of gas components is taken as the average value of the test results of multiple samples.

4. A device for evaluating carbon emissions in steel gas production and consumption, characterized in that: The method for implementing the method according to claim 1 comprises: a first main module for implementing step 1, collecting steel gas samples; a second main module for implementing step 2, analyzing the components of the collected steel gas; a third main module for implementing step 3, calculating and obtaining the carbon emission factor of steel gas; a fourth main module for implementing step 4, calculating and obtaining the carbon emission factor of steel gas power generation; and a fifth main module for implementing step 5, evaluating the carbon emissions corresponding to the production and consumption of steel gas in all processes based on the steel gas carbon emission factor and the steel gas power generation carbon emission factor.

5. An electronic device, characterized in that: include: At least one processor, at least one memory, and a communication interface; wherein the processor, memory, and communication interface communicate with each other; The memory stores program instructions that can be executed by the processor, and the processor calls the program instructions to execute the method according to any one of claims 1 to 3.

6. A non-transitory computer-readable storage medium, characterized in that The non-transitory computer-readable storage medium stores computer instructions, which cause the computer to execute the method of any one of claims 1 to 3.

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