Zentrifugalabscheider und Verfahren zu dessen Steuerung

Details

Veröffentlichungs-Nr.

EP3797872

Aktenzeichen

EP19199430

Anmeldetag

25. September 2019

Veröffentlichung

10. April 2024

Erteilung

10. April 2024

Rechtsraum

EP

IPC

B04B1/08B04B11/02B04B13/00

Abstract

A centrifugal separator for clarification of a liquid mixture into a heavy phase and a light phase, having a centrifugal separator bowl rotatable around an axis X and encasing a separation space 106, and a sludge space 12 radially outward of said separation space. The centrifugal separator bowl comprises a hermetic inlet 4 for feeding a liquid mixture to said separation space 106; a first hermetic outlet 1 for a separated clarified light phase; a second hermetic outlet 2 for a separated heavy phase; a plurality of outlet conduits 5 extending from an outer position in said sludge space 12 to said second hermetic outlet 2; wherein each of the outlet conduits 5 has a flow restriction in the form of a nozzle 20 or vortex diode 7. A method to control such a centrifugal separator, in order to provide a stable flow through said outlet conduits 5, combinations of values of flow rate and density of the heavy phase is established where a stable flow through said outlet conduits 5 are maintained, the flow rate and density of the heavy phase in said second hermetic outlet 2 are measured continuously or intermittently and compared to said combinations of values by said PLC 52, the flow rate in said second hermetic outlet 2 and/or said first hermetic outlet is regulated so a stable flow is maintained.

Anmelder

Firma

Alfa Laval Corporate AB

Land

🇸🇪 Schweden

Fachgebiete