Everyone is discussing the issue of catalysts
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After a few months of use, the conversion catalyst was taken out and found to be damaged in one-third of its volume; a new catalyst was then used. As for how to install the old and new catalysts, is it better to mix them together or to install them separately? Is it better to place the new catalyst at the gas outlet or at the inlet?
After a few months of use, the conversion catalyst becomes dull and needs to be replaced; one-third of it gets damaged in that process. A new catalyst is then used. When installing the old and new catalysts together, is it better to mix them or to install them separately? Is it better to place the new catalyst at the gas outlet or at the inlet?
Personally, I think it’s best not to store the new agent and the old agent together, as although the old agent has been reduced, it still differs from the new agent in terms of activity and mechanical strength. If they must be installed together, layered filling should be considered: the old agent is placed at the bottom of the reactor, while the new agent is placed at the top. This is the most reasonable approach, as under normal circumstances, the catalyst deactivates more rapidly in the upper part than in the lower part. If the old catalyst is placed in the upper part, it will become deactivated in a short period of time, forcing shutdown for maintenance. By placing the new reagent at the upper part, the production cycle lengthens; meanwhile, when the new reagent approaches its point of inactivation, the old reagent at the lower part has also reached its limit of inactivity. I’m not quite sure what device you’re referring to; I’ll just answer based on the device I work with.