关键词: 碳排放, 碳减排, 碳排放连续监测, 火电厂, 低碳技术

Abstract: Reliably quantifying carbon dioxide emissions is the fundamental premise for the effective operation of carbon emission reduction initiatives. As a key measurement method for flue gas in thermal power plants, the Continuous Emission Monitoring System (CEMS) exhibits a higher level of automation and stronger real-time capability compared to the traditional emission factor calculation method. This paper focuses on reviewing the research status and development trends of flue gas CO₂ concentration monitoring technologies and flow rate monitoring technologies, explicitly identifying the accurate measurement of flue gas flow rate as one of the major challenges currently facing CEMS technology. The article comparatively analyzes the practical application status of continuous carbon emission monitoring technologies in coal-fired power plants in the United States, the European Union, and China. Regarding systematic comparative studies on the magnitude and accuracy of emissions derived from continuous carbon emission monitoring technology versus the calculation method, no consistent conclusion has been reached thus far. The paper discusses a pilot project for online carbon emission monitoring conducted on two 1000 MW units of the Datang Group Company, comparing the monitoring results with those from the calculation method. The results show that the cumulative deviation between the monitored and calculated carbon emissions for Unit No. 1 was 1.24%, and for Unit No. 2 was -2.69%. The carbon emission data derived from online monitoring technology and the calculation method demonstrate a certain level of consistency.

Key words: Carbon emission, Carbon Emission Reduction, Continuous Carbon Emission Monitoring and Calculation, Thermal power plant, Carbon reduction technology