VALVE TRAYS IN EXTRACTION COLUMNS

VALVE TRAYS IN EXTRACTION COLUMNS

An extraction method and a countercurrent liquid-liquid extraction column extracts a hydrogen peroxide containing oxidized working solution of an anthraquinone process. The extraction column includes a plurality of sieve trays, wherein at least one of said sieve trays is a valve sieve tray including...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Ryll, Marco, Kamp, Johannes, Arévalo Saade, Eduardo Federico
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Beschreibung
Zusammenfassung:An extraction method and a countercurrent liquid-liquid extraction column extracts a hydrogen peroxide containing oxidized working solution of an anthraquinone process. The extraction column includes a plurality of sieve trays, wherein at least one of said sieve trays is a valve sieve tray including a downcomer and at least one floating valve that includes a liftable opening member covering a valve hole in the valve sieve tray and can be lifted by the light phase below the sieve tray. A more stable operation of sieve tray extraction columns is possible by using a floating valve so that the flow rate of the oxidized working solution of an AO process and the daily production of hydrogen peroxide can be increased.