Velocys Fischer-Tropsch Synthesis Technology - Oxford Catalysts ...

Velocys Microchannel FT Reactor Score CardProperty Tubular Fixed Bed Slurry Bubble Column Velocys MicrochannelFlow Patterns Plug flow Well-mixed Plug flowReactor Scale-up Methodology Easy/known Not well-known Easy/knownHeat Transfer Limitations Very high Low LowMass Transfer Limitations High Low MediumThermal Stability Poor Excellent ExcellentCatalyst Reaction Rate Low Moderate Very HighReactor Volumetric Production Low Low HighDifferential Pressure Moderate Low ModerateGas Recycle Requirements High Moderate LowCatalyst Wax Separation Excellent Problematic/Difficult ExcellentCatalyst Strength Requirement Low High LowRegeneration Equipment Minimal Significant MinimalRegeneration Ease Difficult Complicated SimpleCatalyst Replacement Offline-slow On-stream Offline-rapidOn-stream Factor Low High HighFeed Poisoning Local Global Somewhat LocalUpset Robustness Low Generally Good HighShutdown Robustness Good Poor ExcellentModularization Low Low HighMass Manufacturing Economies Low-Medium Poor ExcellentBoiler Feed Water Quality Low Low ModerateCapital Cost per BPD High Low (large plants) Low (distributed plants)28