What are the main manifestations of the decline in methanation catalyst activity?
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What are the main manifestations of the decline in methanation catalyst activity?
The bed temperature decreases, while the outlet temperature rises slightly.
The use of methanation catalysts involves a plug flow regime, with the reaction hotspot moving downward layer by layer. Once the reaction hotspot reaches the last point in the furnace or the temperature at the exit of the furnace is significantly higher than that inside the furnace, and if trace amounts remain consistently above the acceptable level, it is time to consider replacing the catalyst.
It can operate normally for 8-10 years
Changes in outlet temperature Changes in the composition of the outlet material
The main issue is that the export amount is slightly above the limit.
Check the levels of carbon monoxide and carbon dioxide, as well as the temperature of the catalyst.
On the one hand, there was no change in the slight amounts of import and export; on the other hand, the bed temperature decreased, with no increase in temperature.
Reply to 3# wgonline: What’s your QQ number? I have a question for you. My QQ number is 406738618; please indicate \"Haichuan Catalyst\"
Reply to 1# wlq1970: The catalyst’s activity has decreased, as indicated by a drop in the conversion rates of CO and CO2； The hotspot temperature in the bed layer decreases, and the location of the hotspot in the bed layer changes.
1. The CO and CO2 contents at the methanation outlet increase. 2. The bed temperature drops. 3. The bed temperature of the zinc oxide desulfurizer will also decrease.