Ultra-low flue gas emission monitoring based on differential optical absorption spectroscopy

Jinbao Zhao; Jie Guo; Jiatong Shi; Zhiwei Yu; Han Zhang

doi:10.1117/12.2537517

18 November 2019 Ultra-low flue gas emission monitoring based on differential optical absorption spectroscopy

Jinbao Zhao, Jie Guo, Jiatong Shi, Zhiwei Yu, Han Zhang

Proceedings Volume 11189, Optical Metrology and Inspection for Industrial Applications VI; 111891E (2019) https://doi.org/10.1117/12.2537517
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

This paper describes a set of ultra-low smoke emission monitoring optical devices based on differential absorption spectroscopy (DOAS), which mainly includes a xenon lamp source, a sample cell, a spectrometer for light detection, and a Y-type optical fiber. The device utilizes a newly developed ultraviolet long path gas chamber, the energy of the ultraviolet spectrum is high, and the energy of the xenon lamp in the experiment is only enough to meet the application requirements. As well, based on DOAS optical device it has the advantages of high ultraviolet energy, small volume and high measurement accuracy. Therefore, the system solves the difficult problem of low concentration flue gas emission monitoring. The lower limit of detection of SO₂, NO and NO₂ concentration was 0.21 mg/m³, 0.13 mg/m³ and 0.61 mg/m³, respectively. Comparison of on-site field monitoring with high temperature FTIR (Fourier Transform Infrared Spectroscopy) flue gas emission monitor, the average concentrations of SO₂, NO and NO₂ measured by the two instruments were less than 14 mg/m³, 39 mg/m³ and 25 mg/m³ respectively, and the correlations were all above 0.995.

Citation Download Citation

Jinbao Zhao, Jie Guo, Jiatong Shi, Zhiwei Yu, and Han Zhang "Ultra-low flue gas emission monitoring based on differential optical absorption spectroscopy", Proc. SPIE 11189, Optical Metrology and Inspection for Industrial Applications VI, 111891E (18 November 2019); https://doi.org/10.1117/12.2537517

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available