http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108103521-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B1-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B1-22 |
| filingDate | 2017-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108103521-B |
| titleOfInvention | A method of it improving electrolysis method and prepares quality of chromic anhydride |
| abstract | The invention discloses a kind of methods that raising electrolysis method prepares quality of chromic anhydride, it include: to prepare in chromic anhybride mother liquor obtained in chromic anhybride process to add sodium dichromate in sodium dichromate electrolysis method, obtain mixed liquor, it is added in the anode circulation slot of electrolytic cell using mixed liquor as anolyte, and sodium chloride is added in mixed liquor；It is added in the cathode circulation slot of electrolytic cell using sodium hydroxide solution as catholyte；Electrolytic cell circulating pump will be started after the heating of cathode and anode liquid, cathode and anode liquid respectively enters corresponding yin, yang pole room circulation, and leads to direct current to the yin, yang pole plate of electrolytic cell, starts to be electrolysed, electrolyte electricity obtained in anode circulation slot obtains high-quality chromic anhybride through evaporation and concentration, crystallization, centrifugation；Separated between the yin, yang pole room with ionic membrane.Trivalent chromium content in chromic anhybride mother liquor can be down to 80ppm hereinafter, to control the trivalent chromium of chromic anhydride products in 20ppm hereinafter, having positive effect to chromic acid anhydride product quality is improved by the present invention. |
| priorityDate | 2017-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.