CFD Simulation of Microchannel Reactor Block for Fischer-Tropsch Synthesis: Effect of Coolant Type and Wall Boiling Condition on Reactor Temperature

Krishnadash S. Kshetrimayum, Ikhwan Jung, Jonggeol Na, Seongho Park, Yongkyu Lee, Seongeon Park, Chul Jin Lee, Chonghun Han

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Computational fluid dynamic (CFD) simulation of heat transfer in a microchannel reactor block for low temperature Fischer-Tropsch (FT) synthesis was considered. Heat generation profiles for different operating conditions (GHSV 5000 h-1; catalyst loading 60%-120%, where 100% loading equals 1060 kg/m3 of cobalt based catalyst from Oxford Catalyst Ltd.) were obtained from a single channel model. Simulations on a reactor block quantified the effects of three coolant types: cooling oil (Merlotherm SH), subcooled water and saturated water, on reactor temperature, and also evaluated the effect of wall boiling conditions. At process conditions of GHSV 5000 h-1 and catalyst loading of 120%, predicted temperature gradients along channel length were 32, 17 and 12 K for cooling oil, subcooled water and saturated water, respectively. A modified reactor block showed improved thermal performance as well as heat transfer enhancement due to wall boiling conditions.

Original languageEnglish
Pages (from-to)543-554
Number of pages12
JournalIndustrial and Engineering Chemistry Research
Volume55
Issue number3
DOIs
StatePublished - 27 Jan 2016

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