Destruction process
Abstract
Chemical waste is burned in oxygen using an electric plasma flame to heat a stream of gas which contains at least 70% by weight oxygen. Liquid waste in fine droplet form is introduced into the gas stream via a two-fluid atomiser using a carrier gas also preferably oxygen. The total amount of oxygen present is at least 30% more than required for complete combustion of the liquid waste. The reaction mixture is maintained at a temperature of at least 1450°C for a time of at least 2 milliseconds prior to cooling rapidly of the reaction products to a temperature below 300° C
Term
Term ended
Projected expiry passed 15 July 2011, 15.2 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
Every citation, both ways
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| GB2113815A | Cites | United Kingdom | A | Search report |
| FR2235092A1 | Cites | France | A | Search report |
| DE3206785A1 | Cites | Germany | A | Search report |
| US4479443A | Cites | United States of America | A | Search report |
| US4582004A | Cites | United States of America | A | Search report |
3 priority claims, no other members on record
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 9017146 | United Kingdom | A | |
| 9017146 | United Kingdom | – | |
| GB19900017146 | – | – | – |
37 legal events, as 3 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Announcement of lapse in spainLapsedFD2A | FD2A | ES | |
| Notification of lapseLapsedST | ST | FR | |
| Notification of lapseLapsedST | ST | FR | |
| Notification of lapseLapsedST | ST | FR | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Se: european patent has lapsedLapsedEUG | EUG | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Nl: lapsed or anulled due to non-payment of the annual feeLapsedNLV4 | NLV4 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Be: lapsedLapsedBERE | BERE | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Se: european patent in force in swedenEAL | EAL | EP | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Fr: translation filedET | ET | EP | |
| Definitive protectionFG2A | FG2A | ES | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0469737
- Publication, DOCDB
- 0469737
- Publication, EPODOC
- EP0469737
- Application
- 306382
- Application, DOCDB
- 91306382
- Application, EPODOC
- EP19910306382
Titles3
- German
- Verfahren zur Beseitigung von chemischen Stoffen durch Oxidation in einer Plasmaflamme
- English
- DESTRUCTION PROCESS
- French
- Procédé de destruction de substances chimiques par oxydation dans une flamme de plasma
Classification
- CPC, 4
- F23G5/085
- F23G7/008
- F23J15/06
- Y02E20/30
- IPC, 6
- B09B3 00
- C02F1 02
- C02F1 72
- F23G5 08
- F23G7 00
- F23J15 06
Designated states7
- Contracting states, 7
- Belgium
- Germany
- Spain
- France
- Italy
- Netherlands (Kingdom of the)
- Sweden