Detail publikace

Analysis of Droplet Motion in Cavity Zone of Rotating Packed Bed

HÁJEK, O. MALÝ, M. CEJPEK, O. BLATKIEWICZ, M. JEDELSKÝ, J. HÁJEK, J. MAJDZIK, M. JASKULSKI, M. JÍCHA, M.

Originální název

Analysis of Droplet Motion in Cavity Zone of Rotating Packed Bed

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Droplet motion in outer cavity zone of rotating packed bed is a complex phenomenon that requires analysis of liquid and gas flow to clarify influences of factors such as rotation speed, liquid flow rate, or gas flow rate. In this study, hydrodynamics is described using laser Doppler velocimetry and high-resolution visualization for droplet motion characterization. The results reveal that droplet motion initially depends on the peripheral velocity of the packing, while further from the packing, it loses kinetic energy mainly due to the drag force caused by the surrounding gas. Two-way coupling is investigated as both phases interact with each other. Rankine vortex theory is applied to simulate gas flow in the outer cavity zone. A model, based on Newton's second law, is developed to predict droplet dynamics, including impingement velocity, trajectory length, and total residence time. Validation of the model shows that it can predict the liquid velocity in the outer cavity zone accurately. Upon impingement of droplets on the casing, part of the liquid rebounds as secondary droplets into the cavity, where they circulate with the gas flow. Overall, this study provides insights into droplet dynamics in the rotating packed bed and offers a basis for optimizing process efficiency and design in various applications, including chemical processing and environmental engineering.

Klíčová slova

Rotating packed bed, high-resolution visualisation, laser Doppler velocimetry, hydrodynamics, two-phase flow

Autoři

HÁJEK, O.; MALÝ, M.; CEJPEK, O.; BLATKIEWICZ, M.; JEDELSKÝ, J.; HÁJEK, J.; MAJDZIK, M.; JASKULSKI, M.; JÍCHA, M.

Vydáno

10. 10. 2024

Nakladatel

ELSEVIER

Místo

AMSTERDAM

ISSN

1873-3794

Periodikum

SEPARATION AND PURIFICATION TECHNOLOGY

Ročník

357

Číslo

B

Stát

Nizozemsko

Strany počet

12

URL

https://www.sciencedirect.com/science/article/pii/S1383586624038140

BibTex

@article{BUT189793,
  author="Ondřej {Hájek} and Milan {Malý} and Ondřej {Cejpek} and Michal {Blatkiewicz} and Jan {Jedelský} and Jiří {Hájek} and Małgorzata {Majdzik} and Maciej {Jaskulski} and Miroslav {Jícha}",
  title="Analysis of Droplet Motion in Cavity Zone of Rotating Packed Bed",
  journal="SEPARATION AND PURIFICATION TECHNOLOGY",
  year="2024",
  volume="357",
  number="B",
  pages="12",
  doi="10.1016/j.seppur.2024.130075",
  issn="1873-3794",
  url="https://www.sciencedirect.com/science/article/pii/S1383586624038140"
}