EP 2822674 A4 20151216 - NANOFILTRATION PROCESS FOR ENHANCED BRINE RECOVERY AND SULFATE REMOVAL
Title (en)
NANOFILTRATION PROCESS FOR ENHANCED BRINE RECOVERY AND SULFATE REMOVAL
Title (de)
NANOFILTRATIONSVERFAHREN ZUR VERBESSERTEN SOLERÜCKGEWINNUNG UND SULFATBESEITIGUNG
Title (fr)
PROCÉDÉ DE NANOFILTRATION PERMETTANT D'AMÉLIORER LA RÉCUPÉRATION DE LA SAUMURE ET L'ÉLIMINATION DES SULFATES
Publication
Application
Priority
- US 201261607722 P 20120307
- CA 2013050131 W 20130220
Abstract (en)
[origin: WO2013131183A1] In a nanofiltration system for removing sulfate impurity from an aqueous brine stream and for recovering the brine, introducing a dilution stream upstream of the feed stream inlet of a nanofiltration module in the system dilutes the feed stream. This increases the amount of brine salt and water obtained in the permeate stream without substantially diluting the concentration of sulfate in the pass stream and hence results in enhanced recovery of brine while efficiently removing sulfate impurity. The system and process is especially suitable for recovering brine and removing sulfate impurity from a brine stream in a brine electrolysis plant. In a conventional system, the heat exchanger typically used to cool the feed stream can be omitted if the dilution stream is provided at a temperature suitably lower than that of the feed stream.
IPC 8 full level
B01D 61/14 (2006.01); C01D 3/06 (2006.01); C01D 3/08 (2006.01)
CPC (source: EP US)
B01D 61/027 (2013.01 - EP); B01D 61/0271 (2022.08 - EP US); B01D 61/04 (2013.01 - EP); C01D 3/06 (2013.01 - EP); C02F 1/442 (2013.01 - EP); C25B 1/34 (2013.01 - EP); B01D 2311/04 (2013.01 - EP); B01D 2317/022 (2013.01 - EP); C02F 2101/101 (2013.01 - EP); C02F 2103/34 (2013.01 - EP); C02F 2301/08 (2013.01 - EP)
C-Set (source: EP)
Citation (search report)
- [XY] EP 1586562 A1 20051019 - COUNCIL SCIENT IND RES [IN]
- [YD] US 5858240 A 19990112 - TWARDOWSKI ZBIGNIEW [CA], et al
- [A] CN 201144172 Y 20081105 - YAN ZHANG [CN]
- [A] US 2011198285 A1 20110818 - WALLACE PAUL STEVEN [US]
- [AD] US 2005269266 A1 20051208 - TWARDOWSKI ZBIGNIEW [CA], et al
- [A] BARR A: "Sulphate removal by nanofiltration", FILTRATION AND SEPARATION, ELSEVIER ADVANCED TECHNOLOGY, OXFORD, GB, vol. 38, no. 6, 1 July 2001 (2001-07-01), pages 18 - 20, XP004298417, ISSN: 0015-1882, DOI: 10.1016/S0015-1882(01)80376-1
- See also references of WO 2013131183A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2013131183 A1 20130912; CA 2864478 A1 20130912; EP 2822674 A1 20150114; EP 2822674 A4 20151216
DOCDB simple family (application)
CA 2013050131 W 20130220; CA 2864478 A 20130220; EP 13758618 A 20130220