A Comparison of Co- Current and Counter- Current Modes of Operation for Dual- Type Industrial Fischer- Tropsch Reactor
Publish place: 12th National Iranian Chemical Engineering Congress
Publish Year: 1387
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
NICEC12_086
تاریخ نمایه سازی: 30 شهریور 1387
Abstract:
The present work investigates a dual catalyst bed concept for industrial Fischer- Tropsch synthesis at dynamic condition for the first time. In the dual-type reactor, two catalyst beds instead of one is developed for Fischer- Tropsch synthesis. For simulation purposed, a heterogeneous one-dimensional model is used to analyze and compare the effect of co- current and counter- current flow pattern on performance of reactor. In the co-current mode, feed gas is entered into the tubes of the second reactor in the same direction with the reacting gas stream in shell side while in the counter-current mode the gas streams are in the opposite direction. The proposed model was investigated against measured process data of Fischer- Tropsch plant and a good agreement was achieved. Simulation results for both modes have been compared in terms of temperature, activity and methane mole fraction and shown that co-current mode operates with lower conversion in comparison with counter-current.
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Authors
M. R. Rahimpour
Chemical Engineering Department, Shiraz University
M Tajmiri
Chemical Engineering Department, Shiraz University
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