A newly developed modified Dynamic Radioactive Particle Tracking system (DRPT) was used to investigate the heavy metal contaminants deposition locations in different catalyst beds, sphere, cylinder, trilobe, and quadrilobed in Trickle Bed Reactors. In the present paper, Kernel Density Estimator (KDE) was used to estimate the probability density distributions of heavy metal contaminants depositions in terms of bed radius height. The result shows that the four cases have similar probability density distribution in terms of radius, while the spherical catalyst has the larger distribution range in terms of bed height. The heavy metal deposition is directly related to the pressure drops along the bed height which indicate the bed porosity and intricate bed structure in catalyst packed beds. Heavy metals have more chance to deposit at higher levels of packed beds with higher pressure drops.
B. Qi et al., "Tracking the Heavy Metal Contaminants Entrained with the Flow into a Trickle Bed Hydrotreating Reactor Packed with Different Catalyst Shapes using Newly Developed Noninvasive Dynamic Radioactive Particle Tracking," Chemical Engineering Journal, vol. 429, article no. 132277, Elsevier, Feb 2022.
The definitive version is available at https://doi.org/10.1016/j.cej.2021.132277
Chemical and Biochemical Engineering
Keywords and Phrases
Heavy metal contaminants; Kernel Density Estimation; RPT; Trickle Bed Reactors
International Standard Serial Number (ISSN)
Article - Journal
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01 Feb 2022