Global Patent Index - EP 1528953 B8

EP 1528953 B8 20090610 - METHOD AND DEVICE FOR STRIPPING AMMONIA FROM LIQUIDS

Title (en)

METHOD AND DEVICE FOR STRIPPING AMMONIA FROM LIQUIDS

Title (de)

VERFAHREN UND VORRICHTUNG ZUM STRIPPEN VON AMMONIAK AUS FLÜSSIGKEITEN

Title (fr)

PROCEDE ET DISPOSITIF DESTINES A EXTRAIRE DE L'AMMONIAC A PARTIR DE LIQUIDES

Publication

EP 1528953 B8 20090610 (EN)

Application

EP 03740122 A 20030801

Priority

  • DK 0300520 W 20030801
  • DK PA200201172 A 20020801

Abstract (en)

[origin: WO2004012840A2] The present invention in a first aspect provides a method and a system for stripping volatile compounds such as ammonia from e.g. fermentation liquids. Part of the ammonia is stripped form the liquid in a stripper system comprising a shunt through which liquid such as e.g. fermentation medium comprising a biomass can be diverted in the form of a side stream in liquid contact with a main fermentor(s). The stripper system is connected to an evaporator. In the evaporator aqueous liquid is heated at a pressure below atmospheric pressure whereby vapour is developed at a temperature below 100°C. The vapour from the evaporator is directed to the liquid medium comprising ammonia and this results in ammonia being stripped from the liquid and transferred to the vapour phase. The vapour phase is condensed in first condenser at a low pressure, e.g. a pressure well below 1 bar, and the liquid thus obtained is further treated in a stripper unit at a higher pressure, such as e.g. a pressure at or above 1 bar, to obtain a more concentrated solution of ammonia. When stripped for at least part of the ammonia the liquid initially obtained from the biogas reactor and diverted to the shunt can be returned to the reactor.

IPC 8 full level

B01D 3/38 (2006.01); B01D 3/34 (2006.01); C02F 1/20 (2006.01); C02F 1/58 (2006.01); C02F 1/44 (2006.01); C02F 1/52 (2006.01)

CPC (source: EP US)

B01D 3/346 (2013.01 - EP US); C02F 1/20 (2013.01 - EP US); C12M 21/04 (2013.01 - EP US); C12M 23/36 (2013.01 - EP US); C12M 47/18 (2013.01 - EP US); C02F 1/441 (2013.01 - EP US); C02F 1/444 (2013.01 - EP US); C02F 1/5236 (2013.01 - EP US); C02F 2101/16 (2013.01 - EP US); C02F 2103/20 (2013.01 - EP US); C02F 2303/12 (2013.01 - EP US); Y02E 50/30 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

Designated extension state (EPC)

AL LT LV MK

DOCDB simple family (publication)

WO 2004012840 A2 20040212; WO 2004012840 A3 20040318; AT 426446 T 20090415; AU 2003281808 A1 20040223; CA 2533546 A1 20040212; CA 2533546 C 20101123; DE 60326853 D1 20090507; DK 1528953 T3 20090720; EP 1528953 A2 20050511; EP 1528953 B1 20090325; EP 1528953 B8 20090610; ES 2326029 T3 20090929; MY 143253 A 20110415; US 2006006055 A1 20060112; US 7416644 B2 20080826

DOCDB simple family (application)

DK 0300520 W 20030801; AT 03740122 T 20030801; AU 2003281808 A 20030801; CA 2533546 A 20030801; DE 60326853 T 20030801; DK 03740122 T 20030801; EP 03740122 A 20030801; ES 03740122 T 20030801; MY PI20032912 A 20030731; US 52288505 A 20050201