EP 0917489 A1 19990526 - IMPROVEMENTS IN OR RELATING TO FLUID FILTRATION
Title (en)
IMPROVEMENTS IN OR RELATING TO FLUID FILTRATION
Title (de)
VERBESSERUNGEN BEI ODER IM ZUSAMMENHANG MIT EINER FLÜSSIGFILTRATION
Title (fr)
PERFECTIONNEMENTS RELATIFS A LA FILTRATION DE FLUIDES
Publication
Application
Priority
- GB 9702109 W 19970805
- GB 9616558 A 19960806
- GB 9706100 A 19970324
Abstract (en)
[origin: WO9805407A1] Filtration apparatus has parallel filtration chambers (A, B, C, D) each of which has a filter screen and a cake of particulate material accumulated thereon for enhanced filtration. In normal use three chambers are in filtering operation, filtering fluid between an inflow conduit (100) and an outflow conduit (106); whilst one chamber, D as shown, is off-line. When another chamber, for example A, needs to have its filter screen de-caked it is taken out of operation and chamber D is brought into operation. After de-caking it is necessary to prepare the filter screen of chamber A for subsequent filtration and this is achieved by switching a fan (114) on, so that fluid filtered through chamber A is drawn through a recirculation conduit (108) and back into the inflow conduit (100). It cannot leave the apparatus until it has undergone effective filtration in one of the other filtration chambers. After an interval the filter screen in chamber A will have an adequate cake and is ready to be brought on-line.
IPC 1-7
IPC 8 full level
B01D 35/12 (2006.01); B01D 46/00 (2006.01); B01D 46/02 (2006.01); B01D 46/04 (2006.01)
CPC (source: EP)
B01D 46/02 (2013.01); B01D 46/58 (2022.01); B01D 46/70 (2022.01); B01D 46/71 (2022.01); B01D 46/90 (2022.01)
Citation (search report)
See references of WO 9805407A1
Designated contracting state (EPC)
AT BE CH DE ES FR GB IE IT LI NL SE
DOCDB simple family (publication)
WO 9805407 A1 19980212; AU 3779597 A 19980225; CA 2262480 A1 19980212; CZ 9900200 A3 19990811; EP 0917489 A1 19990526; GB 9706100 D0 19970514; JP 2000516132 A 20001205
DOCDB simple family (application)
GB 9702109 W 19970805; AU 3779597 A 19970805; CA 2262480 A 19970805; CZ 20099 A 19970805; EP 97934653 A 19970805; GB 9706100 A 19970324; JP 50773198 A 19970805