Transcription of Ejector system troubleshooting - Graham Corporation
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Ejector system troubleshooting - Graham Corporation
First published in The International Journal of Hydrocarbon Engineering, UK, 1997 IntroductionWhether for lube oil, fuel oil, or general fractionation,vacuum columns utilize Ejector systems to maintaindesign vacuum levels within the , cracked gases, hydrocarbon vaporsand steam are removed from the column by the ejectorsystem. Extraction of these fluids from the column is key toa proper vacuum level within the column and consequently,design charge rates and specification quality product do have lengthy operating experience with ejectorsystems. Ejector systems have been the mainstay forrefinery vacuum distillation. Whether a crude vacuum toweroperates as a wet , damp or dry tower, an ejectorsystem is the vacuum producer. Different tower operatingpressures and overhead load characteristics of wet, dampor dry operation affect only the configuration of an ejectorsystem but the basic operating principle with lengthy operating experience, refiners viewejector systems with hesitation and uncertainty.
Motive steam Minimum motive steam pressure is important and is also shown on a performance curve. The manufacturer has designed the system to maintain stable operation with steam
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