Global patent index - EP 1009525 A1

EP 1009525 A1 2000-06-21 - METHOD FOR REGENERATING USED INFUSORIAL EARTH AND USES FOR FILTERING BEER

Title (en)

METHOD FOR REGENERATING USED INFUSORIAL EARTH AND USES FOR FILTERING BEER

Title (de)

VERFAHREN ZUR REGENERIERUNG VON VERBRAUCHTEM KIESELGUHR UND SEINE ANWENDUNGEN ZUR BIERFILTRATION

Title (fr)

PROCEDE DE REGENERATION D'UNE TERRE D'INFUSOIRES EPUISEE ET SES APPLICATIONS A LA FILTRATION DE BIERE

Publication

EP 1009525 A1 (FR)

Application

EP 99925084 A

Priority

  • FR 9901413 W
  • FR 9807552 A

Abstract (en)

[origin: FR2779665A1] The invention mainly concerns a method for regenerating used infusorial earth, said infusorial earth being used as filtering auxiliary and being retained in a filter chamber (1), said method comprising a step which consists in introducing an alkaline solution inside the filter chamber, while contacting said solution with the infusorial earth to be regenerated. The invention is characterised in that said method is followed by a step which consists in recuperating, outside the filter chamber, regenerated infusorial earth for reuse when subsequently filtering beer, as filtering auxiliary, said regenerated infusorial earth being introduced in the filter chamber in the form of a mixture with the beer to be filtered. The invention also concerns a beer filtering method using infusorial earth as filtering auxiliary and a beer filtering device.

IPC 1-7 (main, further and additional classification)

B01J 20/14; B01D 37/02; B01J 20/34

IPC 8 full level (invention and additional information)

B01J 20/14 (2006.01); B01J 20/34 (2006.01); C12H 1/07 (2006.01)

CPC (invention and additional information)

C12H 1/063 (2013.01); B01J 20/14 (2013.01); B01J 20/3433 (2013.01); B01J 20/3475 (2013.01)

Citation (search report)

See references of WO 9965603A1

Designated contracting state (EPC)

AT BE DE DK ES FR GB IT NL PT

EPO simple patent family

FR 2779665 A1 19991217; FR 2779665 B1 20000818; AU 4149299 A 20000105; AU 755787 B2 20021219; CA 2302812 A1 19991223; EP 1009525 A1 20000621; WO 9965603 A1 19991223; ZA 200000598 B 20010531

INPADOC legal status

2003-12-03 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030528

2003-03-05 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030117

2000-06-21 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000313

2000-06-21 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE DE DK ES FR GB IT NL PT