... for the Measurement of Highly Viscous Coker and Visbreaker FeedIn a typical complex refinery operation, VAC tower residue or other high viscosity liquid streams are fed into cokers and/or visbreakers for further processing. The flow of these hot liquids (> 390 °F) is traditionally measured with differential pressure devices (orifice or wedge meters) or vortex meters. Under very severe process conditions, impulse line clogging and vortex shedders breakdown frequently. In these cases, increased maintenance costs or even process shut down can be required. In a North American refinery, a differential pressure measurement was replaced without any process interruption with the non-intrusive WaveInjector®, eliminating daily maintenance tasks. Furthermore, the wide dynamic range of the FLUXUS turned out to be of additional advantage. Previously four orifice plates were necessary to cover the entire measuring range. Now a single instrument does the job. |
Identified Benefits:Reliable, non-intrusive measurementEasy upgrading without intrusion into the pipe system and without process interruptionNo risk of clogging of impulse piping (unlike the former measuring system)No production interruption for installation or maintenance workReliable, maintenance free flow measurementWide dynamic measurement range |
