CN-121998478-A - Method for evaluating global warming influence potential value of electrode product for metallurgy

CN121998478ACN 121998478 ACN121998478 ACN 121998478ACN-121998478-A

Abstract

The invention discloses an evaluation method of global warming influence potential values of electrode products for metallurgy, which comprises the steps of S1, defining a target and an evaluation range, S2, constructing a life cycle list, S3, processing a multi-output flow by a physical distribution method, distributing generated environmental loads according to the physical attribute proportion of quality, energy or heat value and the like between a main product and byproducts aiming at a unit process with the multi-output condition, and forming the life cycle list of the electrode products for metallurgy taking a functional unit as a reference, S4, evaluating the environmental influence, S5, and interpreting and optimizing results. The invention has the advantages of comprehensively and objectively quantifying the full life cycle environmental influence of the electrode product for metallurgy, providing a firm theoretical support for upgrading the production process and reducing carbon and emission in the whole process, and providing a powerful basis for green attribute authentication and marketing of the product.

Inventors

YU WENBIN
LIU CHANGLIANG
PAN ZHIQIANG
WANG XINYAO
LI XU

Assignees

南京钢铁股份有限公司

Dates

Publication Date: 20260508
Application Date: 20251226

Claims (10)

1. A method for evaluating global warming potential of an electrode product for metallurgy, characterized by comprising the steps of: s1, defining a target and an evaluation range, namely defining an evaluation main body and a core object, defining functional units of the evaluation object, defining a boundary range of a metallurgical electrode product system, and constructing a basic frame for subsequent evaluation work; S2, constructing a life cycle list, namely disassembling the production process of the electrode product for metallurgy into a group of unit processes with definite boundaries according to the logic association relation among the production processes, collecting input and output data of each unit process by a system, supplementing and tracing the data by combining a professional background database, and forming a process-level life cycle list which is not subjected to distribution processing; S3, processing the multi-output flow by a physical distribution method, namely distributing the generated environmental load according to the quality, energy or heat value and other physical attribute proportions between the main product and the byproducts aiming at the unit process with the multi-output condition to form a life cycle list of the metallurgical electrode product taking the functional unit as a reference; s4, environmental impact evaluation, namely carrying out global warming impact potential value evaluation on a life cycle list of the electrode products for metallurgy after physical distribution based on a life cycle evaluation method system to obtain global warming impact potential values of the electrode products for metallurgy; S5, interpretation and optimization suggestion of results, namely systematically interpreting the global warming influence potential value influence evaluation results and providing emission reduction suggestion based on process optimization and energy structure adjustment.
2. The method for evaluating global warming potential of an electrode product for metallurgy according to claim 1, characterized in that: In step S3, for the unit process with multiple output conditions, an environmental load distribution mode is determined according to the actual physical output characteristics of the main product and the byproducts in the unit process, and the environmental load distributed to the metallurgical electrode product is counted into a life cycle list by preferentially distributing according to the mass ratio in combination with the recycling mode and the physical form difference of the byproducts in the metallurgical electrode production process, so as to form the life cycle list of the metallurgical electrode product taking the functional unit as a reference.
3. The method for evaluating global warming potential of an electrode product for metallurgy according to claim 2, characterized in that: in the step S1, the evaluation object is to systematically collect input and output related to resource consumption, energy input, pollutant emission and the like at each stage of the life cycle of the metallurgical electrode product produced by adopting a roasting and dipping process, and to perform accurate quantitative evaluation on the carbon footprint of the product produced by the system.
4. A method for evaluating global warming potential of an electrode product for metallurgy according to claim 2 or 3, characterized in that: in the step S1, the functional unit is 1 ton of electrode product for metallurgy produced by adopting a roasting-dipping method, and standardized measurement of evaluation data is realized based on the electrode product for metallurgy.
5. A method for evaluating global warming potential of an electrode product for metallurgy according to claim 2 or 3, characterized in that: in the step S1, the boundary range is a production stage of raw and auxiliary materials and energy, a transportation stage of the raw and auxiliary materials and a production and manufacturing stage of electrode products for metallurgy.
6. A method for evaluating global warming potential of an electrode product for metallurgy according to claim 2 or 3, characterized in that: In the step S2, the input/output data includes primary and secondary material consumption, energy consumption, product/byproduct output and pollutant discharge, and meanwhile, the process-level lifecycle list is used for reflecting the input and output conditions of elementary streams of each unit process within the defined lifecycle boundary, the elementary streams are natural substances or energy which are not processed artificially, and are the minimum characterization units for quantifying environmental load in the lifecycle evaluation method, wherein the accumulated quantity of the elementary streams g is calculated according to the following formula: ; Where b T, F, g is used to characterize the cumulative amount of elementary stream g over the entire life cycle under the functional unit F, b F, g is the direct discharge or consumption of elementary stream g in the production phase of the product, a T, i is the direct consumption of primary and secondary materials or energy in unit process i, S a T, i b i, g is the cumulative amount of elementary stream g in the relevant upstream and downstream unit process.
7. A method for evaluating global warming potential of an electrode product for metallurgy according to claim 2 or 3, characterized in that: in the step S4, the global warming potential evaluation is performed by using the life cycle list of the physically distributed metallurgical electrode products as input data according to the following procedures: S41, model selection and data classification, namely selecting an environmental impact evaluation model which is matched with the global warming impact type according to the emission characteristics of electrode products for metallurgy, and classifying and sorting basic flows in a product life cycle list according to the environmental impact type; S42, characteristic quantitative analysis, namely analyzing the damage degree of different elementary streams to various environmental influences based on the classified life cycle list data, converting the different elementary streams into uniform-dimension equivalent values, and summarizing the characteristic results of the elementary streams to obtain a characteristic calculation result of the influence of the carbon footprint of the electrode product for metallurgy; S43, normalization and weighting calculation, namely performing normalization treatment on the characterization result, eliminating dimension difference, and performing weighting calculation by combining with a weight coefficient with industry representativeness to finally obtain the global warming influence potential value of the electrode product for metallurgy.
8. The method for evaluating global warming potential of an electrode product for metallurgy according to claim 7, characterized in that: In step S42, classification of the inventory data takes the environmental impact type as a core basis, the elementary streams belonging to the same environmental impact type are collected, unified index conversion is realized through a characterization model, and characterization calculation of the environmental impact result is performed according to the following formula: ; Wherein C j represents the characterization calculation result of the environmental impact type j, m i represents the manifest statistics of the elementary stream i, and Q ji represents the characterization factor of the elementary stream i on the environmental impact type j.
9. The method for evaluating global warming potential of an electrode product for metallurgy according to claim 7, characterized in that: in the step S43, the normalization processing is performed on the characterization result to eliminate the dimension difference between different environmental impact types, and the normalization calculation is performed according to the following formula: ; Where N j represents the normalized result of the environmental impact type j, C j represents the characterization result of the environmental impact type j, and S j represents the normalized coefficient corresponding to the environmental impact type j.
10. A method for evaluating global warming potential of an electrode product for metallurgy according to claim 2 or 3, characterized in that: In the step S5, the result interpretation link needs to strictly follow the specification requirements of the ISO14040 and ISO14044 standards, and a professional interpretation conclusion is formed by carrying out system analysis on key information in the list analysis and environmental impact evaluation results and combining with the evaluation targets.

Description

Method for evaluating global warming influence potential value of electrode product for metallurgy Technical Field The invention belongs to the technical field of crossing of electrode production and environmental impact evaluation, and particularly relates to an evaluation method of global warming impact potential of an electrode product for metallurgy. Background At present, the evaluation of the exhaust emission reduction effect of industrial enterprises is mostly based on indexes such as exhaust treatment rate, emission reduction proportion and the like, but the method is difficult to reflect the influence of the emission reduction measures on the whole level of greenhouse gas emission from the environmental effect angle system. The LCA method for evaluating the life cycle is an evaluation method for performing system analysis and quantification on environmental impact in the whole life cycle stages from production, manufacturing, use, scrapping, recycling and the like of products, and is widely applied to the field of product environmental performance evaluation. However, for the subdivision field of metallurgical electrode products, the prior art has not formed a life cycle carbon emission evaluation method suitable for the production process, enterprises have difficulty in quantitatively analyzing the environmental influence of the production process through the global warming influence potential value, and the scientific evaluation of the carbon emission management and emission reduction measures of the enterprises is limited to a certain extent. Disclosure of Invention The invention aims to solve the problem that the existing metallurgical electrode lacks a corresponding evaluation method, provides an evaluation method for global warming influence potential values of metallurgical electrode products, quantifies greenhouse gas emission of products obtained from raw materials and auxiliary materials and transported to a production and manufacturing stage, and provides technical support for process optimization, emission reduction strategy formulation and product green authentication. In order to achieve the above purpose, the present invention adopts the following technical scheme: The method for evaluating global warming influence potential of electrode products for metallurgy is based on process life cycle evaluation, a full life cycle data list of the products is established by definitely evaluating objects, functional units and system boundaries, and greenhouse gas emission is quantitatively calculated by combining an adaptive characterization model, so that the global warming influence potential of the electrode products for metallurgy is obtained, and the method comprises the following specific implementation steps: s1, defining a target and an evaluation range, namely defining an evaluation main body and a core object, defining functional units of the evaluation object, defining a boundary range of a metallurgical electrode product system, and constructing a basic frame for subsequent evaluation work; S2, constructing a life cycle list, namely disassembling the production process of the electrode product for metallurgy into a group of unit processes with definite boundaries according to the logic association relation among the production processes, collecting input and output data of each unit process by a system, supplementing and tracing the data by combining a professional background database, and forming a process-level life cycle list which is not subjected to distribution processing; S3, processing the multi-output flow by a physical distribution method, namely distributing the generated environmental load according to the quality, energy or heat value and other physical attribute proportions between the main product and the byproducts aiming at the unit process with the multi-output condition to form a life cycle list of the metallurgical electrode product taking the functional unit as a reference; s4, environmental impact evaluation, namely carrying out global warming impact potential value evaluation on a life cycle list of the electrode products for metallurgy after physical distribution based on a life cycle evaluation method system to obtain global warming impact potential values of the electrode products for metallurgy; S5, interpretation and optimization suggestion of results, namely systematically interpreting the global warming influence potential value influence evaluation results and providing emission reduction suggestion based on process optimization and energy structure adjustment. Further, in the step S3, for the unit process with multiple production conditions, an environmental load distribution mode is determined according to the actual physical output characteristics of the main product and the byproducts in the unit process, and the environmental load distributed to the metallurgical electrode product is counted into a life cycle list by preferentially distributing ac