http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104973629-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G41-04 |
| filingDate | 2015-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104973629-B |
| titleOfInvention | A kind of method of purification of tungsten hexafluoride |
| abstract | A kind of method of purification of tungsten hexafluoride, is related to the fluoride of tungsten.Equipment oil removing, uses nitrogen pressurising, is evacuated to the limit, opens nitrogen heater, is passed through in system, is evacuated to the limit after nitrogen heating；To fluorinated hydrogen tower inflated with nitrogen, tungsten hexachloride is loaded fluorinated hydrogen tower, high-purity tungsten hexafluoride is passed through finished product collecting tank, and generate fluohydric acid gas with attachment steam reaction on tank skin, impure tungsten hexafluoride suck-back in finished product collecting tank after displacement is to rectifying still low-temperature setting, checked for impurities gas content, the qualified rear high-purity tungsten hexafluoride that stops is replaced；Low-temperature setting after primary tungsten hexafluoride is heated, to rectifying still evacuation, tail gas to alkali formula spray column absorbs, and hot water thaws, rectification after detecting during pressure stability；The tungsten hexafluoride of evaporation condensing reflux in rectifying column, after remove impurity, the tungsten hexafluoride at rectification initial stage is collected, and switches to finished product collecting tank and collect after detection, then by taking liquid-like, the metal impurities in detection tungsten hexafluoride. |
| priorityDate | 2015-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 61.