Open Access

ARTICLE

Angle Scattering Method for Soot Concentration Measurement under Ultra-Low Emissions Condition

Bin Yang^1,*, Xingchen Zhu¹, Jie Deng¹, Xiaoxu Guo¹, Jinke Han², Xiaowei Liu²

1 School of Energy and Power Engineering, Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
2 State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan, 430074, China

* Corresponding Author: Bin Yang. Email:

(This article belongs to the Special Issue: Advancement of Understanding of PM_2.5 and Hg Emissions and Their Control Technologies for Cleaner Combustion)

Energy Engineering 2022, 119(2), 511-522. https://doi.org/10.32604/ee.2022.016079

Received 04 February 2021; Accepted 26 August 2021; Issue published 24 January 2022

Abstract

Aiming at the problem of soot concentration measurement under ultra-low emission conditions, a forward small angle soot concentration measurement method is proposed. Taking a typical boiler emission of 0.1 μm–3.0 μm bimodal distribution soot as an object, the particle scatter simulation calculation under different parameters is carried out, and the influence of detection angle and particle size on the angular scattering measurement of ultra-low emission soot is analyzed. The influence of detection angle and particle size on the angular scattering measurement of ultra-low emission soot is analyzed. Preferably, the wavelength of incident light is 650 nm, and the forward detection angle parameter is 15° for the design of forward small angle soot concentration measurement system. An experimental system for measuring soot with standard concentration is built. Experiments of particle concentration measurement of 1.0 μm and 3.0 μm under ultra-low emission conditions are carried out. The results show that the average deviation of soot concentration measurement is less than 0.10 mg/m³ under the condition of ultra-low emission by using 15° of forward detection, which provides an effective way for monitoring ultra-low emission soot concentration in coal-fired power plants.

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Keywords

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