Hydrodynamic study of a Fischer-Tropsch bubble-column slurry reactor
Hydrodynamic studies were performed to simulate a Fischer-Tropsch reactor in a Plexiglas column 5.08-cm ID and 183-cm tall. Hexane was used in a batch-liquid operation; nitrogen was sparged through a fritted stainless-steel disc. Bubble size was affected by axial position in the column and pore size of the gas sparger. Within experimental error, bubble size was not dependent on gas velocity. Gas holdup was expressed as a function of gas velocity by: epsilon/sub g/ = 0.0694 U/sub g//sup 0/ /sup 976/. Four generalized correlations for predicting gas holdup were surveyed, but none were found to satisfactorily predict our data. However, data obtained from other Fischer-Tropsch systems were in good agreement with our experimental data. The presence of solids decreased gas holdup up to 50% for superficial gas velocities above 1.5 cm/s. At a gas velocity of 1.5 cm/s, the flow regime changed from bubbly flow to semiturbulent (swirling bubbly).
- Research Organization:
- Massachusetts Inst. of Tech., Oak Ridge, TN (USA). School of Chemical Engineering Practice
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6126670
- Report Number(s):
- ORNL/MIT-362; ON: DE83013714
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hydrodynamic and mass transfer characteristics in a large-scale slurry bubble column reactor
Hydrodynamic studies of Fischer-Tropsch bubble-column systems
Related Subjects
10 SYNTHETIC FUELS
BUBBLES
CHEMICAL REACTIONS
CHEMICAL REACTORS
CORRELATIONS
DATA
DISPERSIONS
EXPERIMENTAL DATA
FISCHER-TROPSCH SYNTHESIS
FLUID MECHANICS
FUNCTIONAL MODELS
INFORMATION
MASS TRANSFER
MECHANICS
MIXTURES
NUMERICAL DATA
SLURRIES
SUSPENSIONS
VELOCITY