Waste processing
Abstract
A method for the processing of solid organic sulphur-containing waste, in particular ion exchange media, from nuclear facilities, which method comprises that in a first step a) the waste is subjected to pyrolysis at the most at 700 C, in a step b) the gas resulting from step a) is subjected to pyrolysis, in an optional step c) the gas resulting from step b) is exposed to a reductant bed, and in a step d) the gas from step b) or alternatively step c) is exposed to a bed of sulphide-forming metal to form metal sulphides and easily manageable harmless gases. Apparatus for carrying out the method comprises A) a pyrolysis reactor for the solid waste, B) a pyrolysis reactor for the gas from A), C) optionally, a reductant bed, and D) a bed of a sulphur-forming metal for the gas from B) or C).
Term
Term ended
Projected expiry passed 17 September 2013, 13 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
21 members in 12 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 9202690 | Sweden | A | |
| 9202690 | Sweden | A | |
| 92026905 | – | – | – |
| SE19920002690 | – | – | – |
Members21
| Document | Office | Kind | |
|---|---|---|---|
| SE9202690D0 | Sweden | D0 | |
| SE9202690L | Sweden | L | |
| CA2143841A1 | Canada | A1 | |
| WO9407088A1 | World Intellectual Property Organization (WIPO) | A1 | |
| AU4987893A | Australia | A | |
| SE470469B | Sweden | B | |
| LTIP991AThis record | Lithuania | A | |
| FI951163A | Finland | A | |
| FI951163A7 | Finland | A7 | |
| EP0659257A1 | European Patent Office (EPO) | A1 | |
| TW259873B | Taiwan Province of China | B | |
| LT3616B | Lithuania | B | |
| JPH08504261A | Japan | A | |
| US5536896A | United States of America | A | |
| EP0659257B1 | European Patent Office (EPO) | B1 | |
| DE69306405D1 | Germany | D1 | |
| ES2096940T3 | Spain | T3 | |
| DE69306405T2 | Germany | T2 | |
| JP2934508B2 | Japan | B2 | |
| CA2143841C | Canada | C | |
| FI114168B | Finland | B |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Lapsed patentsLapsedMM9A | MM9A |
Numbers
- Publication, DOCDB
- IP991
- Publication, EPODOC
- LTIP991
- Application
- 991
- Application, DOCDB
- IP991
- Application, EPODOC
- LTIP991
Titles
- English
- WASTE PROCESSING
Classification
- CPC, 5
- A62D3/37
- A62D3/40
- A62D2101/28
- A62D2203/02
- G21F9/32
- IPC, 6
- A62D3 37
- G21F9 30
- A62D3 40
- A62D101 28
- F23G5 027
- G21F9 32