| 摘要 |
<p>A modified Claus process and system for treating an acid gas stream may involve, in one illustrative embodiment, controlling gas stream temperatures to operate a second Claus stage reactor in above-dewpoint mode while operating a third Claus stage reactor in sub-dewpoint mode, and then, controlling gas stream temperatures to operate the second stage reactor in sub-dewpoint mode while operating the third stage reactor in above-dewpoint mode to regenerate its catalyst bed, without the need to use switching valves to divert the gas flow to effectively reorder the second and third stage reactors for such regeneration.</p> |
