Highly Viscous Coker and Visbreaker Feed
- Heavy Crude Oil flow measurement
- Overflash Mass Flow Measurement at 720°F
- Heat Transfer Oil at High Temperatures
- Heavy Gasoil in Vacuum Destillation Tower
- Fluidized Catalytic Cracker - FCC
- Highly Viscous Coker and Visbreaker Feed
- Hot Pitch During the Distillation of Coal Tar
- Measurement of Bitumen at 700°F
- Bitumen at Oil Sand Facility
- Portable Measurement of Different Media
- Gas Flow Measurement at the main Fuel Gas Header
- High temperature flow measurement for Coker control
In a typical complex refinery operation, residues or other high viscosity liquid streams (VTBs) from the Vacuum Distillation Columns are fed into Cokers and/or Visbreakers for further processing. The flow of these hot liquids (up to 700°F) is difficult to measure and together with their viscous and sticky nature, traditionally intrusive measurement technologies are often ill-suited.
Under these very severe process conditions, impulse line clogging and vortex shedder breakdowns are frequent. High maintenance costs or even process shut downs are the consequences.
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.
Noteworthy here is also the implementation of a redundant mechanism. As the coker feed isn't allowed to fall below a specific threshold, two measurement channels are connected to the FLUXUS ADM 8027, actively averaging the measured volume flow. If one of the channels were to fail, the flow meter will continue to operate on the other channel solely and thus, the measuring never stops. Additionaly, in such a case as when the coker feed falls below the limit, FLUXUS will ouput a binary alarm signal.
The need for a reliable flow measurement is critical to the refinery for the safe handling of the products and is essential for a better inventory and process control while assisting in maintaining the capacity to meet ever growing demands.
No risk of clogging of impulse piping (unlike the former measuring system)
No production interruption for installation or maintenance work
Reliable, maintenance free flow measurement
Wide dynamic measurement range