| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_10636948adeff7a4f9c77a5c45be2245 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S62-924
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2235-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2245-50 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04412
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04703
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04678
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-0423 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F25J3-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F25J3-02 |
| filingDate |
1994-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_02f9cb222e911d9ec24e05ebb351efbe
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_571307b6537d585036bd06013d136ae5 |
| publicationDate |
1994-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0628777-A1 |
| titleOfInvention |
Process and apparatus for obtaining argon |
| abstract |
To obtain argon, air is broken down in a rectification system with at least one air separation column (3) and one crude argon column. An argon-containing oxygen fraction (4) is removed from the air separation column (3) and introduced into a crude argon column (5). A crude argon fraction (6) is removed from the upper area of the crude argon column (5) and a first reflux liquid (7) is added. A first residual fraction (8) is removed from the lower region of the crude argon column (5). The crude argon fraction (6) is introduced into the lower region of a semi-pure column (9). An argon fraction depleted in oxygen (10, 15) and a second reflux liquid (11) are taken off in the upper region of the semi-pure column (9). A second residual fraction (12) is removed from the lower area of the semi-pure column (9) and forms the first reflux liquid (7) for the crude argon column (5). |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0775881-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0752565-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2761897-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0752565-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19651280-C1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0870524-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19543953-C1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6205815-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6272883-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6612129-B2 |
| priorityDate |
1993-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |