Technical analysis of continuous monitoring of CO2 emissions from stationary sources within the framework of carbon verification and trading requirements
The CO2 emissions from large stationary sources constitute the primary global source of carbon emissions.Real-time and high-precision monitoring of these emissions is essential for implementing carbon trading,conducting product carbon footprint assessments,and levying carbon taxes.By analyzing the technical characteristics of CO2 emission monitoring,including flue gas temperature,pressure,humidity,flow rate,and gas volume fraction monitoring,we evaluated the impact of monitoring errors on the accuracy of CO2 emission monitoring.We discussed the performance requirements for each monitoring indicator in line with precision targets of 1.5 or 2.0 level carbon emission accuracy.Our findings indicate that flue gas temperature,pressure,and humidity have a minor impact on the accuracy of CO2 emission monitoring.Therefore,appropriate monitoring instruments with suitable accuracy and range can readily achieve the 1.5 or 2.0 level accuracy in CO2 emission monitoring.The accuracy of CO2 volume fraction and flue gas flow rate monitoring is crucial for meeting the 1.5 or 2.0 level accuracy targets for CO2 emission.Concerning CO2 volume fraction monitoring,gas analyzers with a precision of 1.0 level and appropriate range,sometimes with multi-range capability if necessary,should be employed.In terms of flue gas flow rate monitoring,the current methods based on Pitot tube flow rate monitoring are inadequate to meet the precision requirements.In is necessary to enhance the current Pitot tube-based flow rate monitoring technology and standards,while simultaneously conducting research on multi-channel ultrasonic flow rate monitoring,the impact of flue gas turbulence,and new technologies for flow rate monitoring.
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