How to determine the sulfation phenomenon of a catalyst? How to deal with it?
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This post was last edited by liaifeng on 2018-9-10 20:49. How to identify catalyst sulfation and how to deal with it
The catalyst’s reaction efficiency has declined; reduce the air supply to reduce the catalyst’s activity
A typical characteristic of catalyst sulfation is the decrease in catalyst activity, resulting in a reduced temperature rise. If catalyst sulfation is confirmed to have occurred, the reactor inlet temperature can be increased slightly, while simultaneously increasing the ratio of hydrogen sulfide to sulfur dioxide. However, thanks to the improvements in various properties of modern catalysts, sulfation rarely occurs.
If sulfation has occurred, there should be corrosion inside the pipes, in my opinion
Judgment: Simple sulfation cannot be used for direct judgment. The deactivation of catalysts involves various aspects, including thermal aging, sulfation, reduction in surface area (carbon deposition, sulfur deposition, sintering), and a decrease in mechanical strength, among others. Treatment: For catalyst-based fireworks, heat immersion and reduction methods can be used for treatment, which can reduce the sulfate content by about 35-45%.