Global Patent Index - EP 0977919 A1

EP 0977919 A1 2000-02-09 - SEPARATING ALKALI METALS FROM GASIFIED BLACK LIQUOR

Title (en)

SEPARATING ALKALI METALS FROM GASIFIED BLACK LIQUOR

Title (de)

VERFAHREN ZUR ABTRENNUNG DER ALKALIMETALLE AUS VERGASTER SCHWARZLAUGE

Title (fr)

SEPARATION DES METAUX ALCALINS D'UNE LIQUEUR NOIRE GAZEIFIEE

Publication

EP 0977919 A1 (EN)

Application

EP 98919692 A

Priority

  • SE 9800637 W
  • SE 9701546 A

Abstract (en)

[origin: WO9848102A1] A process for separating alkali compounds entrained in a superheated gas which has been formed from partial combustion of spent liquor from a cellulose pulping process, where at least cooling medium is injected into a gas/salt smelt mixture in such an amount that the resulting mixture remains superheated and that salt particles are solidified or partially solidified, whereby the gas is lead away for separate cooling washing and the salt particles are dissolved in a receiving liquor.

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

D21C 11/12

IPC 8 full level (invention and additional information)

D21C 11/06 (2006.01); D21C 11/12 (2006.01)

CPC (invention and additional information)

D21C 11/125 (2013.01); D21C 11/066 (2013.01)

Citation (search report)

See references of WO 9848102A1

Designated contracting state (EPC)

AT DE FI SE

EPO simple patent family

WO 9848102 A1 19981029; AT 387536 T 20080315; DE 69839182 D1 20080410; DE 69839182 T2 20090219; EP 0977919 A1 20000209; EP 0977919 B1 20080227; SE 9701546 D0 19970424

INPADOC legal status


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2015-12-15 [REG SE EUG] EUROPEAN PATENT HAS LAPSED

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- Document: AT 387536 T

- Effective date: 20150407

2015-11-03 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

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2009-02-04 [26N] NO OPPOSITION FILED

- Effective date: 20081128

2008-06-03 [REG SE TRGR] TRANSLATION OF GRANTED EP PATENT

2008-04-10 [REF] CORRESPONDS TO:

- Document: DE 69839182 P 20080410

2008-02-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

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2006-11-15 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20031007

2004-01-28 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: CHEMREC AKTIEBOLAG

2003-11-19 [17Q] FIRST EXAMINATION REPORT

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2000-02-09 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991020

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