http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1315233-C
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_064c043328eedc33e41e1ddab0f5d376 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C25B1-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D9-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D9-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B15-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D9-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D9-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C25B1-14 |
| filingDate | 1987-07-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1993-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_678c5b5c995b000012985a2397ae5d32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd82e5dffb74878abc00e87c0f3df7db http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73d338fd00677df3416fa28c76328975 |
| publicationDate | 1993-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1315233-C |
| titleOfInvention | Process for the preparation of potassium nitrate |
| abstract | ABSTRACT OF THE DISCLOSURE: A process is disclosed for the preparation of potassium nitrate by reaction of nitric acid with potassium carbonate, wherein potassium carbonate is obtained by means of an electrochemical process. In this process which is simple and cheap, and efficient to produce potassium nitrate of high purity, a saturated aqueous solution of potassium chloride (anolyte) is fed to the anodic compartment of a membrane cell, whereas an aqueous solution of potassium carbonate or bicarbonate (catholyte) is fed to the cathodic compartment of this cell. The anolyte is electrolysed inside the anodic cell compartment, so to cause chlorine gas to be generated at the anode, and potassium ion to migrate from the anodic compartment to the cathodic compartment of the cell through the membrane. From the anodic compartment of the cell, a depleted anolyte is discharged, which is saturated with potassium chloride, and is recycled back to the anodic compartment of the cell. The catholyte is electrolysed in the cathodic compartment so to cause hydrogen to be generated at the cathode, and thus transform, at least partially, potassium bicarbonate into potassium carbonate. From the cathodic compartment of the cell, a potassium-carbonate enriched catholyte is discharged. A portion of the enriched catholyte is treated with nitric acid, for the purpose of forming an aqueous solution of potassium nitrate, and generating carbon dioxide gas whit the other portion is contacted with the evolved carbon dioxide, in order to convert, at least partially, the potassium carbonate therein contained into potassium bicarbonate that is recycled to the cathodic compartment of the cell. |
| priorityDate | 1986-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.