Weekly Question: What are the methods to determine a decline in catalyst activity?
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This post was last edited by 654262293 on 2011-1-5 10:01. What are the methods to determine a decline in the activity of conversion catalysts? (December 25, 2010)
This post was last edited by 654262293 on 2011-1-5 10:02: 1. The system resistance has increased relatively； 2. Steam consumption increases relatively ； 3. The conversion rate can be ensured only by correspondingly increasing the temperature of the catalyst layer ； 4. The conversion rate has decreased significantly.
This post was last edited by 654262293 on 2011-1-5 at 10:02: 1. The pressure difference in the conversion furnace has increased. 2. The conversion rate decreases. 3. Steam consumption increases. 4. The bed temperature at the hot spot decreases. 5. The temperature difference between import and export decreases.
This post was last edited by 654262293 on 2011-1-5 10:03. 1. Has the production of sulfur decreased? 2. Does the temperature rise of the bed in the first pass decrease, and does it increase in the second pass? 3. Has the temperature of the exhaust furnace increased? 4. Has the amount of exhaust gas emitted increased?
This post was last edited by 654262293 on 2011-1-5 10:03. The main aspects include: 1. Conversion rate; 2. Critical temperature
Reply to 5# lugs66: I haven’t studied this issue in depth yet; I’m just replying here to see what experts think
I don’t understand. I’d dare to say that a decrease in the conversion rate is to blame
This post was last edited by 654262293 on 2011-1-5 10:06: CO at the converter outlet, furnace temperature
This post was last edited by 654262293 on 2011-1-5 at 10:07. The hot spot moves downward; the difference between entering and exiting CO decreases, which means the conversion rate drops and more steam is used
This post was last edited by 654262293 on 2011-1-5 10:07: sudden rise in temperature
The last edit to this post was made by 654262293 on 2011-1-5 at 10:07. I think it’s just the decrease in the export conversion rate and the increase in furnace temperature – those are the two factors