Carbon Dioxide Emissions Monitoring and Analysis of Coal-Fired Units under Different Techniques

Accurate carbon emission monitoring is essential for enterprises to understand their emissions and effectively implement reduction measures. Using 300MW, 600MW, and 1000MW coal-fired power generation units as examples, this paper studies the differences between various carbon dioxide monitoring methods, including the carbon emission accounting method and the carbon emission online monitoring method. The results show that in carbon emission accounting, the mass balance method yields 14.4% to 15.84% lower results than the emission factor method. The online monitoring method results are higher than the accounting method, with a relative difference between 11.8% and 17.1%. The accounting methods are relatively mature and cost-effective, but they mainly rely on manual calculations, which can easily lead to data falsification issues. The online monitoring method is less affected by manual interference and offers high timeliness and automation. However, it comes with higher costs and equipment requirements. Therefore, it is essential to develop both types of carbon emission monitoring methods collaboratively, allowing for mutual verification and data validation.