Abstract
The influence of mass transfer on the H 2/CO ratio in the liquid phase of a slurry reactor used for Fischer-Tropsch synthesis has been analyzed theoretically. It is determined that even under circumstances where the gas-liquid mass-transfer resistance is a small fraction of the overall resistance, differences in the solubilities and diffusivities of H 2 and CO can give rise to liquid-phase H 2/CO ratios which differ substantially from that of the gas fed to the reactor. The direction and magnitude of the change in the liquid-phase H 2/CO ratio is dependent on the H 2-CO consumption ratio, the interfacial area for mass transfer from the bubble phase, the Damkohler number, and the space velocity of the feed gas.
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