http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108622936-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-80 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01G31-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G31-02 |
| filingDate | 2017-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108622936-B |
| titleOfInvention | System and method for preparing high-purity vanadium pentoxide powder by efficient clean chlorination method |
| abstract | The present invention belongs to the field of metallurgy and chemical industry. The invention discloses a system and a method for preparing high-purity vanadium pentoxide powder by a high-efficiency clean chlorination method, wherein industrial-grade vanadium oxide is converted into vanadium oxychloride by adopting fluidized carbon-matching chlorination, and crude vanadium oxychloride is obtained by two-stage dust removal and four-stage leaching; and purifying, catalytically oxidizing and calcining the crude vanadium oxychloride to obtain high-purity vanadium pentoxide powder. The method prevents the over-high furnace temperature by spraying the vanadium oxychloride slurry to the boiling chlorination furnace; the regeneration of chlorine is realized by blowing clean oxygen-enriched air into the catalytic oxidation fluidized bed; the hydrochloric acid is returned to the catalytic oxidation fluidized bed, so that the recycling of the hydrogen chloride is realized. The method has the advantages of strong adaptability of raw materials, self-circulation of chlorine, no discharge of vanadium-containing hydrochloric acid, low production energy consumption and operation cost, stable product quality and the like, is suitable for large-scale industrial production of high-purity vanadium pentoxide powder with the purity of more than 4N, and has good economic benefit and social benefit. |
| priorityDate | 2017-03-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.