CN-116452391-B - Calculation method of average carbon emission of recyclable material in full life cycle

CN116452391BCN 116452391 BCN116452391 BCN 116452391BCN-116452391-B

Abstract

The invention relates to a calculation method of average carbon emission of a recyclable material in a full life cycle, comprising the following steps of solving the net circulation times of the recyclable material according to the regeneration rate of the recyclable material; and calculating the carbon emission generated by each cycle of the recyclable material, summing the calculated carbon emission, and dividing the total carbon emission by the total available mass of the recyclable material to obtain the average carbon emission per unit mass. The calculation method of the invention represents the average carbon emission of all materials put into use after the recyclable materials are subjected to multiple cycles until the materials are lost, and the average carbon emission spans the average level of multiple cycles of material production, processing, use, recovery, regeneration, reprocessing, recycling and the like.

Inventors

OUYANG YUANWEN
YANG YUE
LI ZHIQIANG
LIU XIAOWEI
JIAO YUFENG
SUN GUANGYU

Assignees

上海通正铝结构建设科技有限公司

Dates

Publication Date: 20260505
Application Date: 20230328

Claims (5)

1. A method for calculating the average carbon emission of a recyclable material throughout its life cycle, comprising the steps of: solving the net cycle number of the recyclable material according to the regeneration rate of the recyclable material; Calculating the carbon emission amount generated by each cycle of the recyclable material, and summing the calculated carbon emission amounts to obtain a calculation formula of the obtained carbon emission amounts, wherein the calculation formula is as follows: , In the above-mentioned method, the step of, Represents the total amount of carbon emissions after n net cycles of recyclable material, M represents the mass of virgin material fed into the first cycle by the recyclable material, E v represents the carbon emission factor of the virgin material, E d denotes a waste treatment carbon emission factor, R represents the proportion of the component mass obtained by cyclic regeneration after the use period of the material is finished and the total amount of the material, namely r=pc, P represents the proportion of the mass of the material for cyclic regeneration after the use period of the material is finished to the total mass of the material, C represents the input-output ratio of the material regeneration process, Q represents the ratio of the carbon emissions produced by the mass regeneration to the carbon emissions initially produced; The average carbon emission amount per unit mass is calculated by dividing the total carbon emission amount by the total available mass of the recyclable material, and the calculation formula of the average carbon emission amount per unit mass is: ; the process of solving the net number of cycles of the recyclable material is: The total usable mass of recyclable material is expressed as: ; When the true cycle number n is taken to infinity, there are ; The net number of cycles is expressed as: 。
2. the method for calculating the average carbon emission amount of the full life cycle of the recyclable material as set forth in claim 1, wherein the calculation process of the total carbon emission amount is as follows: the carbon emission amount of each production investment is positively correlated with the mass of the substance obtained by each regeneration, and then: ; The total carbon emissions are expressed as: ; When n is infinity, get 。
3. The method of calculating the average carbon emission for the full life cycle of a recyclable material according to claim 1, wherein the carbon emission factor for producing the recyclable material and the waste treatment carbon emission factor are obtained by actual measurement.
4. The method for calculating the average carbon emission of the full life cycle of the recyclable material according to claim 1, wherein the carbon emission factor of the recyclable material and the waste treatment carbon emission factor are obtained by energy input measurement.
5. The method of calculating the average carbon emissions for a full life cycle of a recyclable material as in claim 1, wherein the carbon emissions produced per cycle of the recyclable material include the carbon emissions produced by producing the recyclable material and the carbon emissions produced by disposing of waste recyclable material.

Description

Calculation method of average carbon emission of recyclable material in full life cycle Technical Field The invention relates to the technical field of carbon emission calculation, in particular to a calculation method of average carbon emission of a recyclable material in a full life cycle. Background At present, the system for calculating the carbon footprint of the product in China is not perfect, and particularly, a carbon emission calculation method for recycling recyclable materials lacks unified standards, for example, the method only provides an approximate method for recycling the materials, lacks theoretical models and derivation processes, and is unfavorable for recycling the renewable materials in the construction field, namely GBT 51366-2019, the building carbon emission calculation standard is a building carbon emission calculation standard. GB/T51366-2019 "building carbon emission calculation Standard" 6.25 building materials production, when low value waste materials are used as raw materials, carbon emissions in the upstream process can be ignored. When other renewable raw materials are used, they should be calculated as 50% of the carbon emissions of the primary raw materials they replace, and renewable construction waste materials generated during the construction and demolition stages, which may be calculated as 50% of the carbon emissions of their alternative primary raw materials, should be subtracted from the construction carbon emissions. "convert this description to the formula: In formula 1, E v represents a raw material carbon emission factor, E d represents a waste treatment carbon emission factor, R represents a ratio of a regenerated component in a current material production process, c represents an input-output ratio in a material regeneration process, p represents a ratio of a material mass for cyclic regeneration after a current material use period is over to a total amount of the current material, and R represents a ratio of a component mass obtained by cyclic regeneration after the current material use period is over to the total amount of the current material, i.e., r=pc. The lack of carbon emission investment in the regeneration stage in the formula 1 has incomplete accounting boundary, and the coefficient 1/2 in the formula does not clearly show the physical meaning of the carbon emission, so that certain limitation is generated for use and popularization. Taking steel and aluminum materials commonly used in construction as an example, the carbon emissions of raw materials of the steel are lower than those of the aluminum materials, the average carbon emissions of the steel calculated by formula 1 are lower than those of the aluminum materials, and industrial policy guidelines based on the results should be that the steel materials are used in a large amount to avoid the use of the aluminum materials. However, in actual recycling, the regeneration loss of the steel material is higher than that of the aluminum material, and the carbon emission during recycling of the steel material is higher than that of the aluminum material, and the carbon emission in the regeneration stage is not considered in the above formula 1, so that the calculation of the carbon emission is not accurate enough, and it is difficult to provide guidance for industrial policies and researches. Disclosure of Invention The invention aims to overcome the defects of the prior art, provide a method for calculating the average carbon emission of the whole life cycle of a recyclable material, and solve the problems of lack of investment of carbon emission in a regeneration stage, incomplete calculation boundary, inaccurate calculation, certain limitation on the use and popularization of the recycled material, difficulty in providing guidance for industrial policies and researches and the like in the existing carbon emission calculation standard. The technical scheme for achieving the purpose is as follows: the invention provides a calculation method of average carbon emission of a recyclable material in a full life cycle, which comprises the following steps: solving the net cycle number of the recyclable material according to the regeneration rate of the recyclable material; Calculating the carbon emission amount generated by each cycle of the recyclable material, and summing the calculated carbon emission amounts to obtain a calculation formula of the obtained carbon emission amounts, wherein the calculation formula is as follows: In the above formula, Σe n represents the total amount of carbon emissions after n net cycles of recyclable materials, M represents the mass of virgin material fed into the first cycle by the recyclable material, E v represents the carbon emission factor of the virgin material, E d denotes a waste treatment carbon emission factor, R represents the proportion of the component mass obtained by cyclic regeneration after the use period of the material is finished and the total amou