基于光谱消光法的天然气管道内黑粉颗粒物在线检测研究
Research on online detection of black powder particles in natural gas pipelines based on spectral extinction method
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- 引用格式:
-
朱静东,王海宁,严志强,周小虎,张艺馨,王顺喜.基于光谱消光法的天然气管道内黑粉颗粒物在线检测研究[J].天然气与石油,2025,43(4):1-8.doi:10.3969/j.issn.1006-5539.2025.04.001
ZHU Jingdong, WANG Haining, YAN Zhiqiang, ZHOU Xiaohu, ZHANG Yixin, WANG Shunxi.Research on online detection of black powder particles in natural gas pipelines based on spectral extinction method[J].Natural Gas and Oil,2025,43(4):1-8.doi:10.3969/j.issn.1006-5539.2025.04.001
- DOI:
- 10.3969/j.issn.1006-5539.2025.04.001
- 作者:
- 朱静东 王海宁 严志强 周小虎 张艺馨 王顺喜
ZHU Jingdong, WANG Haining, YAN Zhiqiang, ZHOU Xiaohu, ZHANG Yixin, WANG Shunxi
- 作者单位:
- 长庆油田(榆林)油气有限公司, 陕西 榆林 719000
Changqing Oilfield(Yulin) Oil & Gas Co., Ltd., Yulin, Shaanxi, 719000, China
- 关键词:
- 黑粉颗粒物;天然气管道;光谱消光法;DOAS;在线检测
Black powder particles; Natural gas pipelines; Spectral extinction method; DOAS; Online detection
- 摘要:
- 天然气管道内存在的黑粉颗粒物会影响集输管网的安全、稳定运行,对管道内黑粉颗粒物的检测是天然气站场内部过滤分离装置选型的基础。基于光谱消光法原理,建立了一种用于天然气管道内黑粉颗粒物在线检测的装置和理论模型。模型基于米氏(Mie)散射原理建立,特别考虑了天然气介质消光作用,使用差分吸收光谱法(Differential Optical Absorption Spectroscopy,DOAS)数值计算95% CH4+5% CO2组分天然气介质的消光值。通过某天然气站场测试表明,光谱消光法能够准确有效地对集输管网内黑粉颗粒物进行在线检测,粒径反演结果误差＜10%,粒径分布满足于Rosin-Rammle函数分布;在线浓度结果同离线检测结果相比，浓度波动误差＜4.7%。研究首次将光谱消光法理论应用于天然气管道内黑粉颗粒物在线检测,未来有望实现对天然气管道内黑粉颗粒物的在线连续监测。
In recent years, the problem of black powder particles in natural gas pipelines has affected the safe and smooth operation of gas transmission pipelines. The detection of black powder particles in pipelines is the prerequisite and basis for the selection of filtration and separation devices in natural gas stations. In this paper, a unit and theoretical model for online detection of black powder particles in natural gas pipelines are proposed based on the principle of spectral extinction method. The model is based on the Mie scattering principle, with special consideration of the extinction effect of natural gas medium. The extinction coefficient of natural gas medium composed of 95% CH4+5% CO2 component is numerically calculated using Differential Optical Absorption Spectroscopy(DOAS). Field tests at natural gas stations show that the program can accurately and efficiently perform online detection of black powder particles in the gathering and transportation networks. The error in black powder particle size inversion is less than 10%, and the distribution of black powder particle size meets the Rosin-Rammle function distribution; the fluctuation error in online concentration results compared with the offline detection is within 4.7%. This study is the first to apply the spectral extinction method to online detection of natural gas black powder particles, and it holds promise for realizing continuous monitoring of black powder particles in natural gas pipelines in the future.
