Method and system for evaluating carbon emission reduction in recyclable material recycling process

Abstract

The invention discloses a method and system for evaluating carbon emission reduction in the recycling process of recoverable materials, and the method comprises the steps: determining the system boundary of the recycling process of various recoverable materials through a life cycle evaluation method, determining the carbon emission reduction factor of each sub-class object in various recoverable materials in the system boundary, and determining the carbon emission reduction factor of each sub-class object in various recoverable materials in the system boundary; then, according to the carbon emission reduction factor of each sub-class object in each recoverable object and the proportion weight of each sub-class object in each recoverable object, obtaining the comprehensive emission reduction factor of each recoverable object, and finally, according to the comprehensive emission reduction factor, the recovery quality and the recovery effective utilization rate of each recoverable object, obtaining the carbon emission reduction amount of each recoverable object. And adding the carbon emission reduction amounts of various recoverable materials to obtain the total emission reduction amount. According to the technical scheme, the carbon emission reduction factor in the recycling and reusing process of the recoverable materials can be dynamically calculated, and accurate evaluation of the carbon emission reduction is achieved based on the data such as the recovery rate, the effective utilization rate and the classification amount which are collected in real time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of carbon emission reduction, and more particularly to a method and system for evaluating carbon emission reduction of recyclable material recycling process. BACKGROUND

[0003] The existing carbon emission reduction evaluation method adopts static weight or fixed emission factor, which cannot reflect the dynamic changes of recyclable material categories, regional differences and technical updates. Moreover, the source of the emission factor of the existing technology for various sub-categories of recyclable materials is unclear, resulting in unreliable accounting results and untrustworthy data, which leads to a large deviation in the evaluation results.

[0004] Therefore, how to design a carbon emission reduction evaluation scheme for recyclable material recycling process and improve the evaluation accuracy has become a problem to be solved in the field. SUMMARY

[0005] Therefore, the present application proposes a method and system for evaluating carbon emission reduction of recyclable material recycling process to improve the evaluation accuracy.

[0006] To achieve the above-mentioned purpose, in a first aspect, the present application provides a method for evaluating carbon emission reduction of recyclable material recycling process, which comprises:

[0007] determining the system boundary of the recyclable material recycling process of each category by using life cycle assessment method;

[0008] determining the carbon emission reduction factor of each sub-category of recyclable material in the corresponding recyclable material within the system boundary of the recyclable material recycling process of each category;

[0009] obtaining the comprehensive emission reduction factor of the recyclable material recycling process according to the carbon emission reduction factor of each sub-category of recyclable material and the proportion weight of each renewable sub-category of recyclable material in the category;

[0010] obtaining the carbon emission reduction of the recyclable material recycling process according to the comprehensive emission reduction factor of the recyclable material recycling process, the recycling quality and the recycling effective utilization rate.

[0011] adding up the carbon emission reduction of each category of recyclable material to obtain the total carbon emission reduction of recyclable material.

[0012] Preferably,

[0013] The recyclable material categories include paper, plastic, PET bottle, metal, glass and old fabric;

[0014] The carbon emission reduction factor of each sub-category of recyclable material in the recyclable material recycling process is calculated according to the following formula:

[0015] △F i = F i原生 - F i再生 ;

[0016] wherein, △F i represents the carbon emission reduction factor of the i-th recyclable material in the recycling process, F i原生 represents the unit carbon emission factor of the i-th virgin recyclable material, F i再生 represents the unit carbon emission factor of the i-th recycled recyclable material.

[0017] Preferably,

[0018] The recyclable materials include paper, plastic, PET bottle, metal, glass, and old fabric.

[0019] When the recyclable materials are directly reused, the carbon emission reduction factor of each sub-class of recyclable materials in the recycling process is calculated according to the following formula:

[0020] △F i = ((CO 2原料i + CO 2能源i ) × R 折 + CO 2废弃物i ) / Q 原料i ;

[0021] wherein, △F i represents the carbon emission reduction factor of the i-th recyclable material in the recycling process, CO 2原料i represents the carbon emission value generated by the consumption of raw materials for producing the i-th recyclable material, CO 2能源i represents the carbon emission value generated by the consumption of energy for producing the i-th recyclable material, R 折 represents the age-adjusted rate of the raw materials, CO 2废弃物i represents the carbon emission value that can be reduced by avoiding the disposal of the i-th recyclable material, Q 原料i represents the mass of the i-th recyclable material.

[0022] Further preferably, the comprehensive emission reduction factor of the recyclable materials in the recycling process is obtained according to the carbon emission reduction factor of each sub-class of recyclable materials and the proportion weight of each recycled sub-class of recyclable materials, and the calculation formula is as follows:

[0023] ΔF 再生j = ∑ i (W i × ΔF i );

[0024] wherein, ΔF 再生j represents the comprehensive emission reduction factor of the recyclable material j in the recycling process, Wi represents the weight proportion of the i-th renewable sub-class of recyclable items in the recyclable item j.

[0025] Preferably, before obtaining the comprehensive carbon emission reduction factor of the recyclable item recycling process according to the carbon emission reduction factor of each sub-class of recyclable items and the weight proportion of each renewable sub-class of recyclable items in the recyclable item, the method further comprises:

[0026] obtaining the weight proportion of each renewable sub-class of recyclable items in the recyclable item by analyzing the literature using material flow analysis.

[0027] Preferably, the carbon emission reduction amount of the recyclable item recycling process is obtained according to the comprehensive carbon emission reduction factor of the recyclable item recycling process, the recycling quality and the recycling effective utilization rate, and the calculation formula is:

[0028] CO 2总体减排量j = n x M 回收质量 x ΔF 再生j ;

[0029] wherein, ΔF 再生j represents the comprehensive carbon emission reduction factor of the recyclable item j recycling process, n represents the recycling effective utilization rate of the recyclable item j, M 回收质量 represents the recycling quality of the recyclable item j; wherein,

[0030] M 回收质量 = R 回 x M 总体质量 , or

[0031] the value of M 回收质量 obtained through the intelligent recycling terminal;

[0032] wherein, R 回 represents the recycling rate of the recyclable item j, M 总体质量 represents the total mass of the recyclable item j.

[0033] Further preferably, the calculation formula of the recycling effective utilization rate of the recyclable item is:

[0034]

[0035] wherein, n represents the recycling effective utilization rate of the recyclable item.

[0036] Further preferably, the calculation formula of the recycling rate of the recyclable item is:

[0037]

[0038] wherein, R 回 represents the recycling rate of the recyclable item.

[0039] In a second aspect, the present application also provides a carbon emission reduction amount evaluation system for a recyclable material recycling process, comprising:

[0040] a system boundary determination module configured to determine the system boundary of each type of recyclable material recycling process by using a life cycle assessment method;

[0041] a sub-class carbon emission reduction factor calculation module configured to determine the carbon emission reduction factor of each sub-class of materials in the recyclable material within the system boundary of each type of recyclable material recycling process;

[0042] a comprehensive carbon emission reduction factor calculation module configured to obtain the comprehensive carbon emission reduction factor of the recyclable material recycling process according to the carbon emission reduction factor of each sub-class of materials in the recyclable material and the proportion weight of each renewable sub-class of materials in the recyclable material;

[0043] a carbon emission reduction amount calculation module configured to obtain the carbon emission reduction amount of the recyclable material recycling process according to the comprehensive carbon emission reduction factor, the recycling quality and the recycling effective utilization rate of the recyclable material;

[0044] a total carbon emission reduction amount calculation module configured to sum up the carbon emission reduction amount of each type of recyclable material to obtain the total carbon emission reduction amount of the recyclable material.

[0045] Preferably, the system comprises a central server and at least one intelligent recycling terminal connected to the central server;

[0046] The intelligent recycling terminal is deployed at a recycling point and comprises:

[0047] a weighing sensor for collecting the weight of the recyclable material;

[0048] an image recognition device for identifying the type of recyclable material;

[0049] a first communication unit for dynamic data interaction with the central server;

[0050] The central server comprises:

[0051] a database for storing data;

[0052] a data processing unit for processing data, comprising the system boundary determination module, the sub-class carbon emission reduction factor calculation module, the comprehensive carbon emission reduction factor calculation module, the carbon emission reduction amount calculation module and the total carbon emission reduction amount calculation module;

[0053] a second communication unit for dynamic data interaction with the intelligent recycling terminal, the visual display terminal and the garbage collection platform.

[0054] The carbon emission reduction assessment method for the recycling and reuse process of recyclables provided in this application uses the life cycle assessment method to determine the system boundary of the recycling and reuse process of various recyclables. Within the system boundary, the carbon emission reduction factor of each sub-category of recyclables is determined. Then, based on the carbon emission reduction factor of each sub-category of recyclables and its proportion weight, the comprehensive emission reduction factor of the recycling and reuse process of recyclables is obtained. Based on the comprehensive emission reduction factor, recycling quality and effective recycling rate of various recyclables, the carbon emission reduction of each recycling and reuse process of recyclables is obtained. Finally, the total carbon emission reduction of all categories of recyclables is calculated. This method can dynamically calculate the carbon emission reduction factor of the recycling and reuse process of recyclables and can achieve accurate assessment of carbon emission reduction based on real-time collected data such as recycling rate, effective utilization rate and sorting volume, providing data support for urban waste management and carbon policy formulation.

[0055] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0056] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application, and the illustrative embodiments and descriptions thereof are used to explain this application. In the drawings:

[0057] Figure 1 A flowchart for assessing the carbon emission reduction of a recyclable material recycling process according to a preferred embodiment of the application;

[0058] Figure 2 A schematic diagram of the system boundary for the preferred embodiment of paper recyclable materials;

[0059] Figure 3 A schematic diagram of the system boundary for recyclable old textiles in the preferred embodiment of the application;

[0060] Figure 4 A schematic diagram of the system boundaries for a preferred embodiment of PET bottles and recyclable plastics.

[0061] Figure 5 A schematic diagram of the system boundary for a preferred embodiment of a recyclable metal.

[0062] Figure 6 A schematic diagram of the full life-cycle material flow model for paper recyclables for the preferred implementation method;

[0063] Figure 7 A schematic diagram showing the relationship between paper recycling rate and effective recycling rate under different scenarios for applying for the preferred implementation method;

[0064] Figure 8 A schematic diagram illustrating the carbon emission reduction of paper recycling under different scenarios for applying for the preferred implementation method;

[0065] Figure 9 A schematic diagram illustrating the carbon emission reduction of the preferred embodiment of the recycling and reuse of old textiles;

[0066] Figure 10 A schematic diagram of the carbon emission reduction assessment system for the recyclable material recycling process according to the preferred embodiment of the application. Detailed Implementation

[0067] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments. To better understand this application, the terms and related background information involved in this application will first be explained:

[0068] Recyclable materials, also known as renewable resources, refer to items generated in daily life that have lost all or part of their original use value, but can be used as raw materials for production or reused after recycling, reprocessing or sorting.

[0069] Regarding the assessment of carbon emission reductions during the recycling and reuse of the aforementioned recyclable materials, this application first proposes a method for assessing carbon emission reductions under the above-mentioned scenario, including steps 110-150:

[0070] Step 110: Use life cycle assessment to determine the system boundaries of the recycling and reuse processes for various recyclable materials;

[0071] Specifically, recyclable materials include multiple categories, such as paper, plastics, PET bottles, metals, glass, and old textiles. Each category of recyclable materials includes multiple subcategories. For example, paper recyclable materials include newsprint, printing paper, writing paper, as well as mixed paper and cardboard (packaging paper, etc.).

[0072] Life Cycle Assessment (LCA) is a method for systematically evaluating the resource consumption and environmental impact of a product, process, or service throughout its entire life cycle, often referred to as a "cradle-to-grave" assessment approach. The life cycle of recyclables includes general disposal processes for recycling and reuse, which involve both direct and indirect carbon emission processes. Therefore, LCA can be used to map the system boundary of the recyclables recycling and reuse process. This system boundary encompasses the life cycle of recyclables' production (primarily the production and processing of recycled products), recycling, reuse, and disposal. Recycled products generally consider the cradle-to-door process, i.e., the production and transportation stages (input materials and waste disposal). Taking recycled plastics as an example, this includes waste plastic collection, transportation, pretreatment, processing / manufacturing of recycled plastic chips or granules, packaging, and delivery.

[0073] Preferably, when determining the system boundary of the recycling and reuse process of recyclables using the life cycle assessment method, it is necessary to base it on the regional characteristics and technological characteristics. For example, some regions have a higher level of technology, and the life cycle of their recyclables may include multiple recyclable links. In this case, the system boundary of the recycling and reuse process of recyclables in the region drawn using the life cycle assessment method will include more recyclable links.

[0074] In one specific implementation, a system boundary diagram illustrating the recycling and reuse process of recyclable materials such as paper, textiles, PET bottles and plastics, and metals and glass, drawn using the life cycle assessment method, is shown below. Figures 2-5 As shown.

[0075] Step 120: Within the system boundary of the recycling and reuse process of various recyclables, determine the carbon emission reduction factor of each sub-category of the corresponding recyclables;

[0076] Specifically, the carbon reduction effect of each subcategory within various recyclable materials is usually different. For example, in the paper category, newsprint, which is mainly made from waste paper, typically has a higher unit emission reduction factor than the other two paper subcategories. Furthermore, the proportion of these subcategories in the recyclable material also varies, affecting the final emission reduction. Therefore, this application separately analyzes the carbon reduction factors of each subcategory of recyclable materials.

[0077] The Carbon Emission Factor (CEF) is a core parameter that converts activity level data (such as energy consumption and material use) into greenhouse gas emissions. It represents the amount of greenhouse gas emissions per unit of activity level, usually expressed in kgCO2eq / kg, where kgCO2eq represents carbon dioxide equivalent.

[0078] Furthermore, this application aims to assess the carbon emission reductions during the recycling and reuse of recyclables. Therefore, when determining the carbon emission reduction factor, it is necessary to clarify the system boundaries of the recycling and reuse process. For example, if the disposal of recycled waste is not within the system boundaries of the recycling and reuse process throughout the entire life cycle of the recyclable, then the emissions involved in the disposal of such recycled waste are not within the scope of calculation in this application.

[0079] Regarding the carbon reduction factor within the system boundary of the recycling process, in a specific implementation, the carbon reduction from the recycling of recyclable materials mainly refers to the carbon reduction benefit of the recycled product compared to the virgin product, i.e., the unit carbon reduction coefficient of the recyclable material. Based on this, the calculation formula for the carbon reduction factor of each sub-category of recyclable materials in the recycling process is as shown in formula (1):

[0080] △Fi =F i原生 ―F i再生 (1)

[0081] Among them, △F i This represents the carbon emission reduction factor for the recycling and reuse process of the i-th type of recyclable material, expressed in kg CO2eq / kg, F. i原生 F represents the carbon emission factor per unit of the i-th type of primary recyclable material. i再生 The unit carbon emission factor of the i-th type of recyclable material is shown in the table.

[0082] Formula (1) applies to recyclable materials such as paper, plastics, PET bottles, metals, glass, and old textiles.

[0083] In another specific implementation, for recyclable materials such as paper, plastics, PET bottles, metals, glass, and old textiles that are directly reused, it can be considered that they directly extend the product life cycle, or that they save or replace the production of new products, at least saving the input of raw materials and the carbon emissions of the production and processing process. For example, donating clothes can be considered as reducing the carbon emissions of new clothes in the weaving, sewing, dyeing and finishing processes. Therefore, in this case, this application will consider the carbon emission reduction effect of recyclable materials that are recycled directly as equivalent to the input of raw materials and energy required to produce one piece of recyclable material, and the carbon emissions when avoiding the disposal of the recyclable material. That is, for recyclable materials that are recycled directly, the carbon emission reduction factor of each sub-category of items in the recycling process is calculated, and the calculation formula is as shown in formula (2):

[0084] △F i =((CO) 2原料i +CO 2能源i )×R 折 +CO 2废弃物i ) / Q 原料 i (2)

[0085] Among them, △F i This represents the carbon emission reduction factor (CO) of the i-th type of item during the recycling and reuse of recyclable materials. 2原料i CO represents the carbon emissions generated from the consumption of raw materials for producing the i-th type of recyclable material. 2能源i R represents the carbon emissions generated by energy consumption in the production of the i-th type of recyclable material. 折 Indicates the depreciation rate of raw materials, CO 2废弃物i Q represents the carbon emission reduction that can be achieved by avoiding the disposal of category i items in recyclables. 原料i This represents the mass of the raw materials of the i-th type of recyclable material.

[0086] Understandably, in some scenarios, it may be considered that other types of recyclable materials besides old fabrics have no direct utilization value, or that in the recycling mechanisms of some communities or professional recycling organizations, old fabrics are mostly directly recycled separately. In these scenarios, Equation (2) can be applied only to old fabrics that are directly recycled and reused. That is, in the process of recycling and directly reusing old fabrics, Equation (2) can be used as a preferred calculation method, and those skilled in the art can choose to use Equation (1) or Equation (2) for calculation as needed.

[0087] In addition, considering that recyclable materials may be reused multiple times, and that there may be situations such as reduced product lifespan or damage requiring repair, this application sets a lifespan rate R. 折 This indicates the loss of recyclable materials.

[0088] Considering that resale also involves packaging and transportation processes, for the sake of simplicity, these transportation and packaging processes can be considered equivalent to the corresponding processes in the initial production and sale. Additionally, the depreciation rate R... 折 The value range can be set to 0-1.0, which means that the average loss rate is set to 0.5 and the average lifespan is extended by 50%. The specific value can be set as needed.

[0089] Step 130: Based on the carbon emission reduction factor of each sub-category of recyclable materials and the proportion weight of each recycled sub-category of recyclable materials, obtain the comprehensive emission reduction factor of the recycling and reuse process of recyclable materials.

[0090] Specifically, as mentioned above, the different proportions of each subcategory in recyclables will affect the final amount of emission reduction. Therefore, this application sets the proportion weight of each recycled subcategory of recyclables to distinguish the contribution of different subcategories to emission reduction, thereby more accurately reflecting the actual emission reduction situation.

[0091] The proportion and weight of each recycled subcategory of recyclable materials can be obtained by analyzing the literature using Material Flow Analysis (MFA).

[0092] Compared to life cycle assessment, material flow analysis can more systematically and comprehensively depict the current status of the waste recycling system, as well as the material flow within and between each recycling process.

[0093] In one specific embodiment, material flow analysis was used to analyze data from the China Paper Industry Yearbook (2020) and documents from the Food and Agriculture Organization of the United Nations, etc., to analyze the material flow of the waste paper recycling system and the material values ​​of different product categories at each stage (raw materials-semi-finished products-finished products), resulting in a 2019 full life-cycle material flow model for recyclable paper products, as shown below. Figure 6As shown in the figure, the arrows represent the material flow direction of the product in each stage. The black values ​​represent the total mass of the material in that flow direction (input or output), and the blue values ​​represent the recycled mass of the material in that flow direction (input or output). Subscript 1 represents waste paper specifically used to make waste paper pulp, and subscripts 2-4 and "*" represent different references. That is, the data in the figure are all obtained from the literature through material flow analysis. In this figure, the input mass of newsprint in the finished product stage is 1.95 million tons, printing paper and writing paper is 22.91 million tons, and other paperboard is 82.18 million tons. The weights of newsprint are 1.8%, printing paper and writing paper is 21.4%, and other packaging paper is 76.8%.

[0094] After obtaining the carbon emission reduction factors of each sub-category of recyclables and the proportion weight of each recycled sub-category of recyclables, the comprehensive emission reduction factor of the recycling and reuse process of recyclables can be calculated as shown in equation (3):

[0095] ΔF 再生j =∑ i (W i ×ΔF i (3)

[0096] Where, ΔF 再生j W represents the comprehensive emission reduction factor of the recycling and reuse process of recyclable material j. i This represents the percentage (%) of the i-th type of recycled subcategory item within the total recyclable material j category.

[0097] In one specific embodiment, the comprehensive emission reduction factors for the recycling and reuse processes of various recyclable materials, calculated using life cycle assessment and material flow analysis, are shown in Table 1 below:

[0098] Table 1

[0099]

[0100] In the third column, the fluctuation range of the unit carbon emission reduction factor values ​​for various recyclable materials can be understood as the carbon emission reduction factor ΔF of all sub-categories of items during the recycling and reuse process of that recyclable material. i The range of values, the carbon emission reduction factor per unit for various recyclable materials in the second column can be understood as the range of ΔF values ​​within the data range of the third column. i After weighting, the comprehensive emission reduction factor ΔF for this type of recyclable material is obtained. 再生j Step 140: Based on the comprehensive emission reduction factor, recycling quality, and effective recycling rate of the recyclable material recycling and reuse process, obtain the carbon emission reduction of the recyclable material recycling and reuse process;

[0101] Specifically, based on the comprehensive emission reduction factor, recycling quality, and effective utilization rate of the recycling and reuse process of recyclable materials, the carbon emission reduction of the recycling and reuse process of various recyclable materials is obtained, and the calculation formula is as shown in formula (4):

[0102] CO 2总体减排量j =n×M 回收质量 ×ΔF 再生j (4)

[0103] Where, ΔF 再生j M represents the comprehensive emission reduction factor of the recycling and reuse process of recyclable material j, n represents the effective utilization rate of recyclable material j, and M represents the overall emission reduction factor of the recycling and reuse process. 回收质量 This indicates the recycling quality of recyclable material j.

[0104] Among them, the recovery quality M of recyclable materials 回收质量 It can be obtained in the following two ways:

[0105] In the first method, M can be calculated using the following formula (5). 回收质量 :

[0106] M 回收质量 =R 回 ×M 总体质量 (5)

[0107] Among them, R 回 M represents the recovery rate of recyclable material j, and this value can be set as needed. 总体质量 This represents the total mass of recyclable material j before recycling. This value can be the mass of the finished product and can be obtained from literature or other data sources.

[0108] In the second method, if smart recycling terminals are deployed in the area, M can be directly obtained through the smart recycling terminals. 回收质量 The value. Smart recycling terminals are distributed at various recycling points and include equipment such as cameras and weighing devices, which can directly collect various information about the recyclables put into the terminal.

[0109] In the above process, in order to evaluate the recycling and reuse situation, this application sets two indicators: recycling rate R 回 , where represents the recycling ratio, and n represents the effective recycling rate, which represents the standard recycling acceptance rate. Their calculation formulas are shown in equations (6) and (7), respectively:

[0110]

[0111] Calculate the recovery rate R 回 The value required for the effective recovery rate *n* can be obtained through material flow analysis. Additionally, the recovery rate *R* is calculated. 回The value of the effective recycling rate, n, can also be adjusted according to different development scenarios. For example, when assessing future years, it can be assumed that the level of recyclable management will be higher in the future than in previous years, then the recycling rate R relative to the current years can be adjusted. 回 The value of the effective recycling rate n can be used to appropriately increase the recycling rate R in future years. 回 And the effective utilization rate of recycling, n. Of course, if the recycling quality M of recyclables is obtained directly from the smart recycling terminal... 回收质量 Then there is no need to calculate the recovery rate R. 回 Step 150: Sum the carbon emission reductions of various recyclable materials to obtain the total carbon emission reduction of recyclable materials;

[0112] Specifically, after calculating the carbon emission reduction of each type of recyclable material separately, the carbon emission reduction of each type of recyclable material is added together to assess the total carbon emission reduction of the current recyclable materials.

[0113] In one specific approach, the carbon emission reduction value obtained from recyclables is determined by the calculated recovery rate R. 回 It is related to the effective utilization rate of recycling, n, and is used to assess the carbon emission reduction under different scenarios.

[0114] In one specific embodiment Figure 7 The recycling rate R set for paper in different scenarios 回 And the effective utilization rate of recycling, n. Figure 7 The study sets up different scenarios to calculate carbon emissions under different conditions. The recycling rate and effective recycling utilization rate in different scenarios are adjusted accordingly based on the recycling rate and effective recycling utilization rate of paper in 2019. The results can be obtained through calculation as follows: Figure 8 The diagram shows a report on carbon emission reductions from paper recycling and reuse. Figure 8 The figure illustrates the potential total carbon emission reductions from paper recycling under different scenarios. As shown in the baseline scenario, paper recycling can reduce emissions by approximately 45.54 million tons of CO2 equivalent, equivalent to saving about 44.21 million kilowatt-hours of electricity. With continuous standardization of recycling and sorting, and improvements in recycling technologies, the estimated future emission reductions from paper could reach up to approximately 83.23 million tons, equivalent to saving an additional 3,659 kilowatt-hours of electricity on top of the baseline scenario. Furthermore, for a more detailed representation of the carbon emission reductions for each subcategory of recyclable materials, a method such as... Figure 9 The diagram illustrates the carbon emission reduction report for the recycling and reuse of old textiles. Those skilled in the art may use different report presentation formats as needed; this application does not impose any limitations.

[0115] The carbon emission reduction assessment method for the recycling and reuse process of recyclable materials provided in this application utilizes the life cycle assessment method to determine the system boundary of various recyclable material recycling and reuse processes. Within the system boundary, the carbon emission reduction factor of each sub-category of recyclable materials is determined. Then, based on the carbon emission reduction factor of each sub-category of recyclable materials and its proportion and weight, the comprehensive emission reduction factor of the recycling and reuse process is obtained. Based on the comprehensive emission reduction factor, recycling quality, and effective recycling rate of various recyclable material recycling and reuse processes, the carbon emission reduction of each recyclable material recycling and reuse process is obtained. Finally, the total carbon emission reduction of all categories of recyclable materials is calculated. This method can dynamically calculate the carbon emission reduction factor of the recycling and reuse process of recyclable materials and can achieve accurate assessment of carbon emission reduction based on real-time collected data such as recycling rate, effective utilization rate, and sorting volume, providing data support for urban waste management and carbon policy formulation.

[0116] Accordingly, in a second aspect, the present invention also provides a system for assessing carbon emission reductions in the above-described recyclable material recycling process, comprising:

[0117] The system boundary determination module 121 is configured to determine the system boundary of the recycling and reuse process of various recyclables using the life cycle assessment method;

[0118] The sub-category carbon emission reduction factor calculation module 122 is configured within the system boundary of the recycling and reuse process of various recyclables to determine the carbon emission reduction factor of each sub-category of the corresponding recyclables.

[0119] The comprehensive carbon emission reduction factor calculation module 123 is configured to obtain the comprehensive emission reduction factor of the recycling and reuse process of recyclables based on the carbon emission reduction factor of each sub-category of recyclables and the proportion weight of each recycled sub-category of recyclables.

[0120] Various carbon emission reduction calculation modules 124 are configured to obtain the carbon emission reduction of the recycling process based on the comprehensive emission reduction factor, recycling quality and effective recycling rate of the recycling process.

[0121] The total carbon emission reduction calculation module 125 is configured to sum the carbon emission reductions of various recyclables to obtain the total carbon emission reduction of recyclables.

[0122] To better achieve dynamic interaction between the software and hardware in the above systems, such as Figure 9 As shown, the system includes: a central server 100, and at least one smart recycling terminal 200 connected to the central server 100.

[0123] The intelligent recycling terminal 200 can be understood as a device that uses technologies such as artificial intelligence, the Internet of Things, and big data to achieve self-service recycling, intelligent identification, automatic settlement, and data management. It can be used in recycling scenarios for items such as mobile phones, gold, garbage, and medical supplies. In this application, the intelligent recycling terminal 200 is deployed at a recycling point and includes: a weighing sensor 210 for collecting the weight of the recyclable materials deposited, an image recognition device 220 for identifying the types of recyclable materials, and a first communication unit 230 for dynamic data interaction with other terminals such as the central server 100. Through the first communication unit 230, the weight data of the recyclable materials collected by the weighing sensor 210 and the recyclable material category data collected by the image recognition device 220 can be uploaded to the central server 100.

[0124] The central server 100 includes at least: a database 110 for storing data, a data processing unit 120 for processing data, and a second communication unit 130 for dynamic data interaction. The database 110 stores carbon emission reduction factor data for each stage of the recyclable waste recycling process. The data processing unit 120 includes: a system boundary determination module 121, a sub-category carbon emission reduction factor calculation module 122, a comprehensive carbon emission reduction factor calculation module 123, various carbon emission reduction calculation modules 124, and a total carbon emission reduction calculation module 125. The second communication unit 130 enables dynamic data interaction between the central server 100 and terminals such as the intelligent recycling terminal 200, a visualization display terminal (not shown in the figure), and a waste collection platform (not shown in the figure).

[0125] In one specific implementation, the data processing unit 120's data processing and data interaction with other terminals includes:

[0126] a) Use life cycle assessment to determine the system boundary of the recyclable waste recycling process, and within this system boundary, determine the carbon emission reduction factor ΔF for each subcategory of recyclable waste. i The second communication unit 130 transmits the carbon reduction factor △F of the recyclables at each stage of the recycling process. i Store in database 110;

[0127] b) Acquire real-time data sent from the intelligent recycling terminal 200 through the second communication unit 130, and calculate the real-time recycling amount M of various recyclable materials. 总体质量 ;

[0128] c) Obtain the total waste volume data sent by the regional waste collection data platform through the second communication unit 130, and combine it with the recycling volume M. 总体质量 Calculate the real-time recovery rate R 回 ;

[0129] d) Utilize material flow analysis to dynamically update the recyclable material flow data within the region, and calculate the weight W accordingly. i ;

[0130] e) Retrieve the recyclable carbon reduction factor data ΔF from database 110 i Combined with weight W i Dynamic calculation of the comprehensive carbon emission reduction factor ΔF 再生j ;

[0131] f) Calculate the total carbon emission reduction (CO) using the carbon emission reduction accounting algorithm. 2总体减排量j Based on this, a carbon emission reduction assessment report is generated and sent to the visualization display terminal through the second communication unit 130.

[0132] Other preferred embodiments and technical effects of the carbon emission reduction assessment system for the recycling and reuse process of recyclable materials disclosed in this application are the same as the carbon emission reduction assessment method for the recycling and reuse process of recyclable materials described above, and will not be repeated here.

[0133] The preferred embodiments of this application have been described in detail above. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.

[0134] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

[0135] Furthermore, various different embodiments of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed by this invention.

Claims

1. A method for assessing carbon emission reductions in the recycling and reuse process of recyclable materials, characterized in that, The method includes: The life cycle assessment method is used to determine the system boundary of the recycling and reuse process of various recyclable materials; Within the system boundary of the recycling and reuse process of various recyclables, determine the carbon emission reduction factor of each sub-category of the corresponding recyclables; Based on the carbon emission reduction factor of each sub-category of recyclable materials and the proportion weight of each recycled sub-category of recyclable materials, the comprehensive emission reduction factor of the recycling and reuse process of recyclable materials is obtained. The carbon emission reduction of the recyclable material recycling process is obtained based on the comprehensive emission reduction factor, recycling quality, and effective recycling rate of the recyclable material recycling process. The total carbon emission reduction of recyclables is obtained by summing the carbon emission reductions of various recyclable materials.

2. The method according to claim 1, characterized in that: The types of recyclable materials include: paper, plastics, PET bottles, metals, glass, and old textiles; The carbon emission reduction factor for each subcategory of recyclable materials during the recycling and reuse process is calculated using the following formula: △F i =F i原生 ―F i再生 ; Among them, △F i F represents the carbon emission reduction factor for the recycling and reuse process of the i-th type of recyclable material. i原生 F represents the carbon emission factor per unit of the i-th type of primary recyclable material. i再生 The unit carbon emission factor of the i-th type of recyclable material is shown in the table.

3. The method according to claim 1, characterized in that: The types of recyclable materials include: paper, plastics, PET bottles, metals, glass, and old textiles; When the recyclable materials are recycled and reused directly, the carbon emission reduction factor of each sub-category of the recyclable materials during the recycling and reuse process is calculated using the following formula: △F i =((WHAT 2原料i +CO 2能源i )×R 折 +CO 2废弃物i ) / Q 原料i ; Among them, △F i This represents the carbon emission reduction factor (CO) of the i-th type of item during the recycling and reuse of recyclable materials. 2原料i CO represents the carbon emissions generated from the consumption of raw materials for producing the i-th type of recyclable material. 2能源i R represents the carbon emissions generated by energy consumption in the production of the i-th type of recyclable material. 折 Indicates the depreciation rate of raw materials, CO 2废弃物i Q represents the carbon emission reduction that can be achieved by avoiding the disposal of category i items in recyclables. 原料i This represents the mass of the raw materials of the i-th type of recyclable material.

4. The method according to claim 2 or 3, characterized in that, Based on the carbon emission reduction factors of each sub-category of recyclable materials and the proportion weight of each recycled sub-category of recyclable materials, the comprehensive emission reduction factor of the recycling and reuse process of the recyclable materials is obtained, and the calculation formula is as follows: ΔF 再生j =∑ i (W i ×ΔF i ); Where, ΔF 再生j W represents the comprehensive emission reduction factor of the recycling and reuse process of the recyclable material j. i This represents the weight ratio of the i-th type of recycled sub-category item in the total recyclable material j.

5. The method according to claim 1, characterized in that, Before obtaining the comprehensive emission reduction factor for the recycling and reuse process of the recyclables based on the carbon emission reduction factor of each sub-category of recyclables and the proportion weight of each recycled sub-category of recyclables, the method further includes: The literature was analyzed using material flow analysis to obtain the proportion and weight of each recycled sub-category of recyclable materials.

6. The method according to claim 1, characterized in that, Based on the comprehensive emission reduction factor, recycling quality, and effective utilization rate of the recyclable material recycling process, the carbon emission reduction of the recyclable material recycling process is obtained, and the calculation formula is as follows: CO 2总体减排量j =n×M 回收质量 ×ΔF 再生j ; Where, ΔF 再生j M represents the comprehensive emission reduction factor of the recycling and reuse process of recyclable material j, n represents the effective utilization rate of recyclable material j, and M represents the overall emission reduction factor of the recycling and reuse process. 回收质量 This represents the recovery quality of recyclable material j; where, M 回收质量 =R 回 ×M 总体质量 ,or M obtained through smart recycling terminals 回收质量 The value; Among them, R 回 M represents the recovery rate of recyclable material j. 总体质量 This represents the total mass of recyclable material j.

7. The method according to claim 6, characterized in that, The formula for calculating the effective utilization rate of recyclable materials is: Where n represents the effective utilization rate of recyclable materials.

8. The method according to claim 6, characterized in that, The formula for calculating the recovery rate of the recyclable material is: Among them, R 回 This indicates the recycling rate of recyclable materials.

9. A carbon emission reduction assessment system for the recycling and reuse process of recyclable materials, characterized in that, The system includes: The system boundary determination module is configured to determine the system boundary of the recycling and reuse process for various recyclables using the life cycle assessment method. The sub-category carbon emission reduction factor calculation module is configured within the system boundary of the recycling and reuse process of various recyclables to determine the carbon emission reduction factor of each sub-category of the corresponding recyclables. The comprehensive carbon emission reduction factor calculation module is configured to obtain the comprehensive emission reduction factor of the recycling and reuse process of the recyclable material based on the carbon emission reduction factor of each sub-category of the recyclable material and the proportion weight of each recycled sub-category of the recyclable material. Various carbon emission reduction calculation modules are configured to obtain the carbon emission reduction of the recyclable material recycling process based on the comprehensive emission reduction factor, recycling quality and effective recycling rate of the recyclable material recycling and reuse process. The total carbon emission reduction calculation module is configured to sum the carbon emission reductions of various recyclables to obtain the total carbon emission reduction of recyclables.

10. The system according to claim 9, characterized in that, The system includes: a central server, and at least one intelligent recycling terminal connected to the central server; The intelligent recycling terminal is deployed at the recycling point and includes: Weighing sensors are used to collect the weight of recyclable materials that are disposed of. Image recognition device for identifying types of recyclable materials; The first communication unit is used to perform dynamic data interaction with the central server; The central server includes: A database is used to store data; The data processing unit, used for processing data, includes: the system boundary determination module, the sub-category carbon emission reduction factor calculation module, the comprehensive carbon emission reduction factor calculation module, the various types of carbon emission reduction calculation modules, and the total carbon emission reduction calculation module; The second communication unit is used for dynamic data interaction with the intelligent recycling terminal, the visualization display terminal, and the waste collection and transportation platform.

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