大口径管道烟气流量测量方法综述  

Overview of flue gas flow measurement methods in large-scale ducts

作　　者：谢子立 卢志民[1] 姚顺春[1] 刘泽明 黄泳如 莫爵徽 叶建威 林玥[1] XIE Zili;LU Zhimin;YAO Shunchun;LIU Zeming;HUANG Yongru;MO Juehui;YE Jianwei;LIN Yue(School of Electric Power Engineering,South China University of Technology,Guangzhou 510641,China;Cntest Intelligent Scien-Tech Co.,Ltd.,Foshan 528313,China)

机构地区：[1]华南理工大学电力学院,广东广州510641 [2]佛山华谱测智能科技有限公司,广东佛山528313

出　　处：《热力发电》2024年第4期112-124,共13页Thermal Power Generation

基　　金：国家自然科学基金项目(U22B20119);广东省自然科学基金杰出青年项目(2021B1515020071);广东省能源高效清洁利用重点实验室(2013A061401005);佛山市科技创新项目(1920001000052)。

摘　　要：2021年全国碳市场开启,为了提高碳交易的准确性,需要做到碳排放数据的可测量、可报告、可核查。在这种背景下,烟气在线监测系统作为一种碳排放量化方法得到了重视。其有效工作的基础是烟气流量的准确测量。但电厂烟囱尺寸大,内部烟气流动特性复杂,烟气流量难以准确测量。重点分析了皮托管流量计和气体超声波流量计在大口径管道流量测量中的研究现状,详细介绍了大口径管道气体流量测量技术。此外,还介绍了一种独立的流量测量方法—示踪气体稀释法,探讨其发展现状及作为一种流量标定方法的潜力。In 2021,China launched its national carbon market.To enhance the accuracy of carbon trading,it is essential that carbon emission data are measurable,reportable,and verifiable.Against this backdrop,online monitoring systems for flue gas have gained significant attentions as a method of quantifying carbon emissions.The basis for the effective work of continuous emission monitoring systems is the accurate measurement of flue gas flow.However,the challenge in accurately measuring flue gas flow rates is significantly heightened by the large size of power plant chimneys and the complexity of the gas flow characteristics within them.This paper focuses on analyzing the current research status of Pitot tube flowmeters and ultrasonic flowmeters in large-scale duct flow measurement,and provides a detailed introduction to gas flow measurement technologies for large-scale ducts.Additionally,it introduces an independent flow measurement method,namely the tracer gas dilution method,and discusses its current development and potential as a flow calibration method.

关 键 词：大口径管道 流量测量 烟气流场 示踪气体稀释法 

分 类 号：X773[环境科学与工程—环境工程]