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    Nitrogen+Syngas 396 Jul-Aug 2025

    Problem No. 75: Reverse rotation of the CO2 compressor


     

    Reverse rotation of an inline four-stage centrifugal CO2 compressor is an unwanted phenomenon which sometimes occurs in urea plants. Reverse rotation can lead to damage to the internals of the CO2 compressor and an expected outage. This discussion shares experiences and provides suggestion on how to avoid reverse rotation of the CO2 compressor.

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