Global Patent Index - EP 0547946 B2

EP 0547946 B2 2000-03-22 - Process for the production of impure oxygen

Title (en)

Process for the production of impure oxygen

Title (de)

Verfahren zur Herstellung unreinen Sauerstoffs

Title (fr)

Procédé de production d'oxygène impur

Publication

EP 0547946 B2 (FR)

Application

EP 92403330 A

Priority

FR 9115705 A

Abstract (en)

[origin: EP0547946A1] According to this process: - the intermediate pressure column (2) is operated at a pressure higher than 6 bars and preferably of at least approximately 9 bars absolute; - a first vaporization gas which is less volatile than nitrogen from the top of the intermediate pressure column (2) is condensed in the vessel condenser (8) of the low pressure column (3); and - nitrogen from the top of the intermediate pressure column is condensed and is then conveyed as reflux to the top of the intermediate pressure column, at a level of the low pressure column (3) which is situated above the said vessel condenser (8). Application to twin-column air distillation plants coupled to a gas turbine. <IMAGE>

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

F25J 3/04

IPC 8 full level (invention and additional information)

F25J 3/04 (2006.01)

CPC (invention and additional information)

F25J 3/04206 (2013.01); F25J 3/0409 (2013.01); F25J 3/04303 (2013.01); F25J 3/04351 (2013.01); F25J 3/04418 (2013.01); F25J 2200/20 (2013.01); F25J 2200/52 (2013.01); F25J 2200/54 (2013.01); F25J 2200/90 (2013.01); F25J 2210/42 (2013.01); F25J 2215/50 (2013.01); F25J 2250/10 (2013.01); F25J 2250/20 (2013.01); F25J 2250/40 (2013.01); F25J 2250/50 (2013.01); Y10S 62/939 (2013.01)

Designated contracting state (EPC)

BE DE ES FR GB IT NL SE

EPO simple patent family

EP 0547946 A1 19930623; EP 0547946 B1 19961009; EP 0547946 B2 20000322; AU 3022192 A 19930624; AU 654601 B2 19941110; BR 9205050 A 19930810; CA 2085561 A1 19930619; CN 1068428 C 20010711; CN 1088301 A 19940622; DE 69214409 D1 19961114; DE 69214409 T2 19970522; DE 69214409 T3 20000713; DE 69230975 D1 20000531; DE 69230975 T2 20001005; EP 0713069 A1 19960522; EP 0713069 B1 20000426; ES 2092661 T3 19961201; ES 2145967 T3 20000716; FR 2685459 A1 19930625; FR 2685459 B1 19940211; US 5392609 A 19950228

INPADOC legal status


2005-12-09 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2003-10-10 [REG FR ST] NOTIFICATION OF LAPSE

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2001-06-30 [BERE] BE: LAPSED

- Owner name: S.A. L' AIR LIQUIDE POUR L'ETUDE ET L'EXPLOITATION

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- Effective date: 20001230

2000-09-01 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2000-07-03 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2000-06-05 [NLR2] NL: DECISION OF OPPOSITION

2000-05-24 [GBTA] GB: TRANSLATION OF AMENDED EP PATENT FILED (GB SECTION 77(6)(B)/1977)

2000-03-22 [27A] MAINTAINED AS AMENDED

- Effective date: 20000322

2000-03-22 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B2

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1999-11-10 [RTI2] TITLE (CORRECTION)

- Free text: PROCESS FOR THE PRODUCTION OF IMPURE OXYGEN

1997-11-03 [NLR1] NL: OPPOSITION HAS BEEN FILED WITH THE EPO

- Opponent name: LINDE AKTIENGESELLSCHAFT

1997-08-27 [26] OPPOSITION FILED

- Opponent name: LINDE AKTIENGESELLSCHAFT

- Effective date: 19970707

1996-12-01 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2092661 T3

1996-11-14 [REF] CORRESPONDS TO:

- Document: DE 69214409 19961114

1996-10-31 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: ING. A. GIAMBROCONO & C. S.R.L.

1996-10-23 [DX] MISCELLANEOUS: (DELETED)

1996-10-16 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 19960925

1996-10-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

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1996-10-09 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

- Effective date: 19961009

1996-10-09 [XX] MISCELLANEOUS:

- Free text: TEILANMELDUNG 96200235.8 EINGEREICHT AM 02/02/96.

1994-06-22 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19940509

1993-06-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19921215

1993-06-23 [AK] DESIGNATED CONTRACTING STATES:

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