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Simultaneous quantitative measurement of gaseous species composition and solids volume fraction in a gas/solid flow
Author(s) -
Laviolette JeanPhilippe,
Patience Gregory S.,
Chaouki Jamal
Publication year - 2010
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.12210
Subject(s) - absorbance , mole fraction , analytical chemistry (journal) , chemistry , fraction (chemistry) , tracer , volume fraction , alkane , bubble , volume (thermodynamics) , nitrogen , fiber , gas composition , thermodynamics , chromatography , hydrocarbon , mechanics , organic chemistry , physics , nuclear physics
A novel spectroscopic method was developed to measure quantitatively and simultaneously solids volume fraction (1−ε) and gaseous species composition ( Y i ) in a gas/solid system. The method was comprised of an FT‐IR coupled to a fiber‐optic probe that could perform real‐time and in situ measurements of absorbance. The effect of (1−ε) and Y i on the absorbance spectra were additive and could be independently calibrated. Experiments were conducted with alkane/nitrogen mixtures and two types of particles: sand and FCC. Fuel mole fractions and (1−ε) were varied between 1.8–10.1 mol % and 0–0.45, respectively. The relative errors for Y i time‐averaged measurements were below 6% and the error increased significantly with decreasing beam intensity. A proof of concept for a novel application in fluidized beds was also completed: the fiber‐optic probe was used to measure the molar fraction of a tracer gas inside the emulsion and bubble phases during gas tracer experiments. © 2010 American Institute of Chemical Engineers AIChE J, 2010