Solids motion in a Gas-Solid two-phase mixture flowing through a packed bed

Yulong Ding, Zhiliang Wang, Dongsheng Wen, Mojtaba Ghadiri

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

This paper reports the first study on solids motion at the single particle scale in a gas-solid two-phase mixture flowing through a packed bed, a process of great importance to a number of industrial processes. A solids circulating system and the non-intrusive Positron Emission Particle Tracking (PEPT) technique were used, which enabled steady-state measurements for a prolonged period thus also allowed the macroscopic solids behaviour to be analysed. The results show that the single particle scale velocity fluctuates with both radial and axial positions, but the average (macroscopic) solids velocity changes periodically with radial position, and the periodicity does not correspond exactly to the packed particle diameter. The residence time and tortuosity of the suspended particles show an approximately Gaussian distribution. The occupancy data suggest that particles spend more time in a region close to the wall.

Original languageEnglish
Title of host publication4th World Congress in Industrial Process Tomography
PublisherInternational Society for Industrial Process Tomography
Pages368-373
Number of pages6
ISBN (Electronic)9780853163206
StatePublished - 2005
Externally publishedYes
Event4th World Congress in Industrial Process Tomography - Aizu, Japan
Duration: 5 Sep 20055 Sep 2005

Publication series

Name4th World Congress in Industrial Process Tomography

Conference

Conference4th World Congress in Industrial Process Tomography
Country/TerritoryJapan
CityAizu
Period5/09/055/09/05

Keywords

  • Dilute gas-solid flows
  • Packed bed
  • Residence time and tortuosity
  • Solids motion

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