Energy and water recovery from pressure oxidation flash vessel steam

The invention relates to a method of recovering energy and water from pressure oxidation flash steam comprising a step wherein a first flash steam directly obtained from a flash vessel is contacted with a first recirculating condensate having a first low condensate temperature to con- dense at least...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	O'CALLAGHAN, JOHN, HAAKANA, TIMO, PIEVILAINEN, RISTO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The invention relates to a method of recovering energy and water from pressure oxidation flash steam comprising a step wherein a first flash steam directly obtained from a flash vessel is contacted with a first recirculating condensate having a first low condensate temperature to con- dense at least part of the water vapour comprised in the said first dirty flash steam on the first recirculating condensate and simultaneously to heat the said first recirculating condensate to obtain a first recirculating condensate having a first high condensate temperature and a first vent steam. The invention further relates to a pressure oxidation arrangement adapted for recovering energy from pressure oxidation flash steam and to a use of high temperature condensate and to a use of a direct contact condenser for recovery of energy and water from a pressure oxidation flash steam.