Process and apparatus for treating radioactive waste
US4569787A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1982 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Jun 23, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S159/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A radioactive waste is treated by supplying a liquid concentrate of at least one of a radioactive liquid waste and a radioactive waste slurry to a centrifugal film dryer, thereby drying and pulverizing insoluble and soluble solid matters contained in the concentrate, washing the centrifugal film drier with hot water after the drying and pulverization, settling the effluent washing water together with a condensate containing solid matters generated in the drying and pulverization, and supplying a slurry of insoluble solid matters separated by the settling to the centrifugal film drier, thereby drying and pulverizing the solid matters. The dried powder from the centrifugal film drier can be pelletized in a pelletizer, and effluent washing water generated by washing the pelletizer with hot water after the pelletization can be subjected to the settling together with the effluent washing water and the condensate from the centrifugal film drier. Operating load of the centrifugal film drier is considerably reduced, and the operating efficiency and life of the centrifugal film drier are improved thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.