Level Control of Column Trays
Accurate level control of column trays in many refinery units ensures product quality of the different cuts of hydrocarbon, but is made difficult due to flashing and other extreme process characteristics. Using a VEGAPASS 61 bridle chamber ensures that the trays are monitored reliably, and the online calibration features of the integral guided wave radar provide quick and easy access to the measurement. The technology is immune to product density changes and buildup, producing an accurate measurement through changes in the process.
This solution for level control of trays is applicable in many refinery applications, including distillation columns, vacuum towers, fractionators, debutanizers, depropanizers, and deethanizers.
Monitoring head space pressure at the upper end of refinery columns is important to ensure that the process is operating under ideal pressure conditions.
A VEGABAR 51 pressure transmitter operates effectively during temperature fluctuations caused by operational phases to report the column’s pressure to the unit operator. The operator can thus control the pressure to ensure efficiency and stability of the column’s process.