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\begin{document}

\title{Fluidized bed hydrodynamic modelling of CO\textsubscript{2} in syngas:
Distorted RTD curves due to adsorption on FCC}



\author[1]{Ariane Berard}%
\author[1]{Bruno Blais}%
\author[1]{Gregory Patience}%
\affil[1]{Polytechnique Montreal}%


\vspace{-1em}



  
  \date{May 21, 2024}


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\selectlanguage{english}
\begin{abstract}
The hydrodynamics of gas-phase fluidized beds is non-ideal due to high
velocity. Micro-fluidized beds have distinct flow patterns because of
the wall and the diameter constrains bubble velocity. We measured the
gas phase RTD in a 8 mm ID quartz tube loaded with fluid catalytic
cracking catalyst (FCC). We devised a feed manifold to introduce a
4-component tracer gas as a bolus pulse. The FCC separated the gases
based on diffusivity like chromatography. At ambient temperature, the
trailing edge of CO, CH\textsubscript{4}, and CO\textsubscript{2} have
extended tails and an axial dispersion model accounts only for 92 \% of
the variance. We developed a model to characterize the tailing that
includes diffusion from the bulk gas to the FCC pores and
adsorption-desorption of the gas on the catalyst. This model accounted
for 98.6 \% of the variance in the RTD. At 300\selectlanguage{ngerman}°C the tailing disappeared
consistent with expectations in chromatography.%
\end{abstract}\selectlanguage{ngerman}%



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\textbf{Hosted file}

\verb`main-AiChE.tex`  available at \url{https://authorea.com/users/368178/articles/487407-fluidized-bed-hydrodynamic-modelling-of-co2-in-syngas-distorted-rtd-curves-due-to-adsorption-on-fcc}

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