T/CNFPIA 2004-2024 The method for calculating carbon reserves of pitch

Scope

Scope: This document specifies the calculation method for the biogenic carbon storage in rosin and its conversion into biogenic carbon dioxide. This document is applicable to the calculation of biogenic carbon storage and its conversion into biogenic carbon dioxide in rosin; Main technical content: 4. Determination of the carbon content in rosin 4.1 Industry average value method: The carbon content in rosin is 0.793. Note: The carbon content determined by the industry average value method is referenced in Appendix A. 4.2 Gas chromatography determination method 4.2.1 Determination of the chemical components in rosin: Follow the provisions in Section 7.6 of LY/T 3157-2023. Use a gas chromatograph to conduct qualitative and quantitative analysis of the chemical components in rosin, and determine the chemical components and their relative content in rosin. 4.2.2 Determination of the carbon content in rosin: Calculate the carbon content in rosin according to Equation (1), with an accuracy of 0.001. (1) Where: WC – the carbon content in rosin; 12 – the relative atomic mass of carbon; NCi – the number of carbon atoms in each component i of rosin, in units of atoms; Qi – the relative molecular mass of each component i of rosin; Ci – the relative content of each component i of rosin. 5. Calculation of the biogenic carbon storage in rosin and its conversion into biogenic carbon dioxide 5.1 Calculation of the biogenic carbon storage in rosin: Calculate the biogenic carbon storage in rosin according to Equation (2), with an accuracy of 0.01. (2) Where: PC – the biogenic carbon storage in rosin, in units of kilograms (kg); WC – the carbon content in rosin; M0 – the absolute dry mass of rosin, in units of kilograms (kg). 5.2 Calculation of the biogenic carbon dioxide in rosin: Calculate the biogenic carbon dioxide in rosin according to Equation (3), with an accuracy of 0.01. (3) Where: PCO? – the biogenic carbon dioxide in rosin, in units o

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