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

XIE Zili; LU Zhimin; YAO Shunchun; LIU Zeming; HUANG Yongru; MO Juehui; YE Jianwei; LIN Yue

doi:10.19666/j.rlfd.202312176

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

更新时间：2025-09-28

- Overview of flue gas flow measurement methods in large-scale ducts
- Thermal Power Generation Vol. 53, Issue 4, Pages: 112-124(2024)
- 作者机构：
  
  1. 华南理工大学电力学院
  2. 佛山华谱测智能科技有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202312176
  CLC： X773
- Published：2024
- 稿件说明：
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XIE Zili, LU Zhimin, YAO Shunchun, et al. Overview of flue gas flow measurement methods in large-scale ducts[J]. Thermal power generation, 2024, 53(4): 112-124.
DOI：

XIE Zili, LU Zhimin, YAO Shunchun, et al. Overview of flue gas flow measurement methods in large-scale ducts[J]. Thermal power generation, 2024, 53(4): 112-124. DOI： 10.19666/j.rlfd.202312176.

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。

Abstract

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.

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