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Catalyst Activity/age Operating At Lower Than Design Temperature

catalyst activity temperature

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#1 muzaffarumar3067


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Posted 02 April 2018 - 11:25 PM

We are trying to optimize our catalyst reactor by operating it at lower tempeature than it is designed for, this is being done with the consent of the catalyst manufacturer


However there is a concecrn from our side that by operating the catalyst at a lower temperature, are we loading the catalyst more. this is because it is giving almost same performance (Complete reaction) but now at a lower temperature meaning that the catalyst must be over performing to achieve the same performance as before. 


If above assumption is true, then the life of the catalyst would also get shorten due over stressing it?


Also what are the factors that reduce the catalyst age/activity apart from the thermal stress, pressure variations, coking and mechanical damages. 







#2 Technical Bard

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Posted 03 April 2018 - 07:30 AM

Would need far more detail.  What reaction?  What catalyst?  Exothermic or endothermic?  How is heat added/removed?  

#3 muzaffarumar3067


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Posted 03 April 2018 - 09:54 PM

Reaction in hydrogenation of COS/CS and SO2 to H2S i.e. COS + H2------> H2S + CO etc. The reaction is exothermic, the reactants are heated to ~ 280 degrees prior to be sent to the reactor catalyst for having the hydrgenation reaction


We optimized the temperature to 250 degrees and yet achieved the complete reaction 


So we are achieving same performance (Complete reaction) but at lower temperature, this means that the catalyst is overperforming and is under load.  Would this affect it life?

#4 rdcrags


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Posted 04 April 2018 - 08:16 PM

The lowest temp at which it achieves the target conversion will result in the longest life.

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