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Fischer‐tropsch synthesis in slurry phase: Effect of CO 2 inhibition on performance of bubble column slurry reactors
Author(s) -
Sanders Ernst,
Deckwer WolfDieter
Publication year - 1987
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450650119
Subject(s) - fischer–tropsch process , slurry , autoclave , bubble column reactor , syngas , bubble , sparging , chemistry , catalysis , chemical engineering , materials science , analytical chemistry (journal) , chromatography , thermodynamics , organic chemistry , mechanics , composite material , selectivity , gas bubble , physics , engineering
Fischer‐Tropsch Synthesis (FTS) was studied on a precipitated Fe/K catalyst in a bubble column slurry reactor (10 cm in diameter, suspension height ≤ 150 cm) with a perforated plate sparger. The rate data for syngas consumption obtained at low H 2 to CO inlet ratios ( < 0.8) cannot be described by first order kinetics. However, a multicomponent model which considers rate inhibition by CO 2 chemisorption gives an excellent description of the data. The optimized kinetic parameters are in agreement with recent findings from an autoclave unit. The multicomponent model and the kinetic parameters can be successfully applied to describe previous results from a bench‐scale pilot plant. The results indicate the importance of rate inhibition by CO 2 if syngases of low H 2 to CO ratio from advanced gasifiers are converted by FTS. Two‐stage processes with intermediate CO 2 absorption are recommended.