Industry Article
Keep Surge in Check
CCC Diagnoses a Surge Event at a Urea Plant
Operating centrifugal CO2 compressors can be a complicated affair. Read along as CCC examines the surge event experienced by one such compressor at a urea plant, and offers recommendations on how to hold back the surge in the future.
Excerpt:
“Compressor Control Corp. (CCC) have studied a number of CO2 compressors. Findings from this enquiry … show that for a variable speed compressor at moderate to low speeds, the fourth stage may limit the flow through the entire compressor because it is in choke. This increases the danger of damage from a surge in stage 1 of the compressor. Alternatively, at higher speeds stage 4 is running dangerously close to surge, whereas other stages are entirely safe.”
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