Global Patent Index - EP 2475269 A1

EP 2475269 A1 20120718 - METHOD FOR CONCENTRATING MATERIAL SOLUTIONS

Title (en)

METHOD FOR CONCENTRATING MATERIAL SOLUTIONS

Title (de)

VERFAHREN ZUR AUFKONZENTRIERUNG VON WERTSTOFFLÖSUNGEN

Title (fr)

PROCÉDÉ DESTINÉ À CONCENTRER DES SOLUTIONS DE MATIÈRE

Publication

EP 2475269 A1 20120718 (DE)

Application

EP 10768853 A 20100908

Priority

  • AT 14462009 A 20090911
  • AT 2010000320 W 20100908

Abstract (en)

[origin: WO2011029110A1] The invention relates to a method for concentrating a material solution using at least two consecutive membrane separating stages, each for separating the material solution into a retentate and a permeate, the cut-off of the membranes used in the separating stages being higher than that of the membrane used in the previous stage. The retentate of each separating stage, with the exception of the last stage, is fed to the following separating stage as a feed, and the permeate from at least one separating stage is fed back to a previous separating stage and introduced into the feed thereof. The method is characterized in that the fed back permeate has a concentration and viscosity that substantially correspond to the concentration and viscosity of the feed of the previous separating stage into which said permeate is introduced.

IPC 8 full level

A23L 2/08 (2006.01); C07H 1/00 (2006.01); C07H 1/06 (2006.01)

CPC (source: EP)

A23L 2/082 (2013.01); C13B 20/165 (2013.01)

Citation (search report)

See references of WO 2011029110A1

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 SE SI SK SM TR

DOCDB simple family (publication)

AT 508549 A4 20110215; AT 508549 B1 20110215; BR 112012008378 A2 20150825; CU 20120043 A7 20120731; EP 2475269 A1 20120718; US 2012238777 A1 20120920; WO 2011029110 A1 20110317

DOCDB simple family (application)

AT 14462009 A 20090911; AT 2010000320 W 20100908; BR 112012008378 A 20100908; CU 20120043 A 20120312; EP 10768853 A 20100908; US 201013394859 A 20100908