山东科学 ›› 2020, Vol. 33 ›› Issue (6): 118-125.doi: 10.3976/j.issn.1002-4026.2020.06.016

• 其他研究论文 • 上一篇    下一篇

双通道非分散红外SO2在线检测系统设计

刘志锋,罗学科,李文,刘鹏   

  1. 北方工业大学 机械与材料工程学院,北京 100144
  • 收稿日期:2020-03-30 出版日期:2020-12-09 发布日期:2020-12-11
  • 作者简介:刘志锋(1992—),男,硕士研究生,研究方向为远程气体检测与工程应用。E-mail:2193990804@qq.com

Design of dual-channel non-dispersive infrared SO2online detection system

LIU Zhi-feng, LUO Xue-ke, LI Wen, LIU Peng   

  1. School of Mechanical and Materials Engineering, North China University of Technology, Beijing 100144
  • Received:2020-03-30 Online:2020-12-09 Published:2020-12-11

摘要: 当前烟气检测中对低体积分数的SO2气体在线检测存在干扰因素多、响应时间慢等问题,针对此情况,利用特定波段红外光可以吸收SO2的特性,采用单光源双通道方法,设计了基于非分散红外吸收原理的SO2在线检测系统。实验结果显示零点漂移为0.4%,响应时间为3.86 s,线性误差为0.3%,重复性误差为0.52%。参数对比表明,该方法能够准确对SO2体积分数进行测量,更适用于目前烟气在线检测需求。

关键词: SO2, 非分散红外吸收, 单光源双通道, 响应时间

Abstract: The current problems of multiple interference factors and slow response time in online detection of low-volume-fraction SO2 gas in flue gas detection.In this case,an online SO2 detection system based on the non-dispersive infrared absorption principle was designed,which used the characteristic capability of SO2 to absorb infrared light in a specific band and adopted a single light source and dual channel method. Experiment results show that the zero drift is 0.4%, the response time is 3.86 s, the linear error is 0.3%, and the repeatability error is 0.52%. A comparison of parameters shows that this method can accurately measure SO2 concentration and is more suitable for the current demand of online flue gas detection.

Key words: SO2, nondispersive infrared absorption, single light source and dual channel, response time

中图分类号: 

  • O657.32