ESP Reliability

To maintain acceptable performance of the ESP, it is necessary to understand the mechanisms responsible for performance degradation and how to mitigate via monitoring and design. The following are typical factors that contribute to performance degradation of the ESP  

FIGURE 18.16 ESP PM emission curves with NIT3 injection. 

FIGURE 18.17 ESP NO reduction with continuous NFij injection. 

Poor gas flow distribution High level of lines in hopper Improper control settings Rapping system degradation Process gas conditions PM fines electrical resistivity 

Supply two ESPs capable of 70% flue gas treatment that allows the FCC to be brought to a lower rate and one ESP can be taken out of service for any required maintenance. 

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