Characterization of liquid trickle flow in poor-wetting packed bed

Shungo Natsui, Tatsuya Kikuchi, Ryosuke O. Suzuki, Tatsuya Kon, Shigeru Ueda, Hiroshi Nogami

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A low coke rate operation of a blast furnace tends to cause deterioration of the gas permeability. The liquid iron and molten slag dripping under the melting zone influences the gas flow and permeability in the lower part of the furnace. A computational fluid dynamic model, using a particle-based simulation, is presented for characterization of the melt dripping behavior in a packed bed. In this work, the validity of the liquid passing conditions based on the gravity to surface tension ratio was confirmed. The melt shape produces an "icicle," "droplet," and "dome" forms based on the change of the surface tension and density absolute values. Even with an identical liquid volume passage, the form of the liquid flow changed by the pressure from the liquid's upper portion. Even if it has identical gravity and surface tension ratios, the liquid flow changes with the volume of the liquid phase and its form.

Original languageEnglish
Pages (from-to)1259-1266
Number of pages8
JournalIsij International
Volume55
Issue number6
DOIs
Publication statusPublished - 2015 Jan 1

Keywords

  • Ironmaking
  • Molten iron
  • Packed bed
  • Particle simulation
  • Trickle flow

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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