HYDRODYNAMICS OF TRICKLING FLOW IN PACKED BEDS. PART II: EXPERIMENTAL OBSERVATIONS.

J. Levec, Avelino E Saez, R. G. Carbonell

Research output: Contribution to journalArticle

119 Citations (Scopus)

Abstract

The liquid holdup and the pressure drop for two-phase trickling flow in a packed bed were measured experimentally. Different values of those parameters were obtained as the liquid flow rate was increased and then decreased, indicating a multiplicity in hydrodynamic states. This behavior was observed even when the gas flow rate was zero in the bed. It was determined that the hysteresis exhibited by the process is due to imperfect wetting of the packing and to the difference between advancing and receding contact angles at the gas-liquid-solid contact lines. A new correlation for predicting liquid holdups and pressure drops for trickling flow in packed beds is proposed for the decreasing liquid flow rate operating mode.

Original languageEnglish (US)
Pages (from-to)369-380
Number of pages12
JournalAICHE Journal
Volume32
Issue number3
StatePublished - Mar 1986
Externally publishedYes

Fingerprint

Packed beds
Hydrodynamics
Gases
Pressure
Liquids
Flow rate
Pressure drop
Contacts (fluid mechanics)
Contact angle
Flow of gases
Hysteresis
Wetting

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Mechanical Engineering
  • Environmental Engineering
  • Polymers and Plastics

Cite this

HYDRODYNAMICS OF TRICKLING FLOW IN PACKED BEDS. PART II : EXPERIMENTAL OBSERVATIONS. / Levec, J.; Saez, Avelino E; Carbonell, R. G.

In: AICHE Journal, Vol. 32, No. 3, 03.1986, p. 369-380.

Research output: Contribution to journalArticle

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