A novel light fluctuation spectrum method for in-line particle sizing

2012, Volume 6, Issue 1

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Frontiers in Energy >> 2012, Volume 6, Issue 1 doi: 10.1007/s11708-012-0176-z

A novel light fluctuation spectrum method for in-line particle sizing

Institute of Particle and Two-phase Flow Measurement, University of Shanghai for Science & Technology, Shanghai 200093, China

Available online: 2012-03-05

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Abstract

This paper discusses two problems in in-line particle sizing when using light fluctuation method. First, by retrieving the ratio of particle concentrations at different time, the intensity of incident light is obtained. There exists narrow error between the calculated and pre-detected value of the intensity of incident light. Secondly, by combining spectrum analysis with Gregory’s theory, a multi-sub-size zone model is proposed, with which the relationship between the distribution of turbidity and the particle size distribution (PSD) can be established, and an algorithm developed to determine the distribution of turbidity. Experiments conducted in the laboratory indicate that the measured size distribution of pulverized coal conforms well with the imaging result.

Keywords

in-line measurement ; particle size distribution (PSD) ; incident light intensity ; particle concentration ; light fluctuation

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