Discussion on the minimum water vapor ratio of Co-Mo series shift catalysts
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In practical industrial applications, we often observe a water vapor-to-Co-Mo ratio as low as around 0.25, yet the CO conversion rate in such cases is generally above 20%. In a scenario where the sulfur-containing raw gas at the inlet of the shift reactor has a pressure of 3.8 MPa and a temperature of 175°C, with a CO content of 15–16%, it is required that as much of this raw gas as possible pass through the shift reactor, and the CO content at the outlet should be 13%. Which type of catalyst is more suitable to use at this time, and what should be the appropriate level of water vapor ratio?
Has no one encountered this kind of problem, or is no one willing to discuss it? ? ? ?
What level of CO content in raw gas would result in such a low value? And it only changed by such a small amount – what does the downstream part do?