http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2019078758-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9596517bde32f892e975b7d9276a427f http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_192b0f2e1459eff227a771e6b803a9cd |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G21F9-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G21F9-00 |
| filingDate | 2018-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_34a8c3699e5821888fdf022e0301b18f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2e8c99ee133f4765151342fb52565fe1 |
| publicationDate | 2019-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2019078758-A2 |
| titleOfInvention | METHOD FOR IMMOBILIZATION OF LIQUID NUCLEAR WASTE CONTAINING TRITIUM AND CONTAMINATED BY SALTS AND RADIOACTIVE ORGANIC MATERIALS AND DEVICE FOR ITS IMPLEMENTATION |
| abstract | The group of inventions concerns the field of reprocessing of radioactive waste and in particular the immobilization of liquid nuclear waste containing tritium. The method and apparatus of the invention are intended to provide minimal radioactive contamination of materials and equipment, minimize personnel radiation hazards and increase the degree of environmental safety during storage. prolonged liquid tritium-containing nuclear waste, with a high degree of crystalline hydrate filling dehydrated with tritium water. The method of immobilizing tritium-containing liquid nuclear wastes contaminated with radioactive organic salts and materials contained in vessels comprises curing the waste in a crystalline salt matrix which is then immobilized in a solid mineral matrix. Hardening of the waste is done by hydration of a poorly soluble phosphate salt hydrate; a phosphate hydrate previously dehydrated is poured into the tank containing waste and mixed to obtain the formation of new crystalline hydrates. The amount of crystalline salt hydrate М n salt n poorly water-soluble dehydrated phosphate is selected on the basis of a stable state calculation at launching: М n salt = М n waste/ n ρ n waste ⋅ ρ n water ⋅ М n salt/ n 18 N, in which М n waste is the measured mass of waste in the tank; ρ n waste is the density measured in the tank; ρ n water is the density of the water; m n salt is the molar mass of crystalline hydrate salt; 18 is the molar mass of a water molecule; NOT is the number of water molecules maintained stable by a molecule of crystalline hydrate salt. The mixing dwell time is automatically selected when a force resistance is exceeded during the rotation of the blades by more than twice the initial value. After crystallization, compaction of the crystalline hydrate and the release on its surface of unbound organic compounds, the space up to the sealed top cover is filled with a resistant mineral composition, for example, based on a magnesium binder. to form a solid mineral matrix. The device comprises a tank, a sealed top cover, a rod with mixing blades, a drive and an electric motor. The drive is integrated into the watertight top cover via a gasket. The electric motor is removable and is connected to the drive on the outside of the cover. On the inner side of the lid, the rod is connected to the drive with mixing blades via a connecting sleeve; the rod with blades separates from the drive in case of exceeding the effort on the drive by more than twice compared to the initial effort. The rod with the blades remains in the tank after the mixing operation, and the electric motor is disconnected and used in the next tank. |
| priorityDate | 2017-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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