Catalysis in Industry

, Volume 11, Issue 3, pp 243–250 | Cite as

Behavior of a Two-Phase Gas–Liquid Flow at the Inlet into a Catalytic Reactor

  • O. P. KlenovEmail author
  • A. S. NoskovEmail author


The behavior of a two-phase flow inside the inlet pipeline of a catalytic reactor is investigated. In addition to the classical approach using familiar flow diagrams, means of computational fluid dynamics are used for three-dimensional modeling of the spatial distribution of phases in the pipeline during operation. Results show a nonuniform distribution of the liquid phase over the over the pipeline outlet cross section surface, plus a mass flow of the liquid phase that is not stable over time. The maximum peak flow rates exceed the average values by ~300%. Compared to data from flow diagrams, CFD modeling shows that a change in the gas flow in the investigated range does not alter the nature of a two-phase flow, but an increase in the gas flow reduces the irregularity of the distribution of the liquid phase over the pipeline outlet cross section. Data on the behavior of a flow are needed to design catalytic reactor structures that ensure the uniform distribution of a two-phase flow to the catalyst bed for, e.g., hydrotreating reactors in the oil refining industry.


two-phase gas-liquid flow hydrotreating processes two-phase flow pattern maps computational fluid dynamics (CFD) spatial flow distribution 



This work was performed as a part of the state task for the Boreskov Institute of Catalysis, project no. АААА-А17-117041710077-4.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of SciencesNovosibirskRussia

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