| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_eb2648e65ad8850515bd727a122f1186
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_219b4a2bbb3c63148ae31e7aaa2d6fae |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2256-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2200-90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2259-40001
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2245-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2220-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2215-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02C20-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2210-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2205-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2220-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2215-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2205-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-504
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S62-913
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2230-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2200-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2270-90 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04636
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04321
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04357
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04157
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04642
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-0438
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04254
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-0423 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F25J3-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F25J3-08 |
| filingDate |
1996-07-16^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c02998d3323c00ada17450fdf0ffc6c1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58cf8f28651db69ecde5c28144368703
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_10c3c102c24cac4fbf27ad8ff7f41ca4 |
| publicationDate |
1997-01-22^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0754923-A2 |
| titleOfInvention |
Ultra-high purity nitrogen generating method and unit |
| abstract |
It is an object of the present invention to provide an ultra-high purity nitrogen generating method and unit capable of producing ultra-high purity nitrogen at a higher yield. n[Construction] n An ultra-high purity nitrogen generating method according to the present invention comprises: removing, from feed air, carbon dioxide, moisture and catalyst poisons of an oxidation catalyst contained therein by means of a decarbonating drier (4); introducing said feed air into a low-pressure rectification column (6), where it is roughly rectified to further remove the carbon dioxide, moisture and catalyst poisons; then introducing raw nitrogen gas obtained in the low-pressure rectification column (6) into an oxidation column (8) so that carbon monoxide in the raw nitrogen gas is converted to carbon dioxide and hydrogen also contained therein to water, respectively; and thereafter introducing the raw nitrogen gas into an adsorption column (10) so that carbon dioxide and water are removed by adsorption to provide feed raw nitrogen gas; further introducng the feed raw nitrogen gas into an intermediate-pressure rectification column (11), where it is rectified; and condensing nitrogen gas from the top portion of the intermediate-pressure rectification column by a reboiler-condenser (6RC) to provde high purity liquid nitrogen; and returning said liquid nitrogen to the intermediate-pressure rectification column (11), whereby a part of this high purity liquid nitrogen is used as a reflux liquid and the remainng part thereof is taken out of a rectifying stage that is several stages below the rectifying stage in the top portion of the intermeiate-pressure rectification column as an ultra-high purity nitrogen gas product or ultra-high purity liquid ntrogen product. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111268658-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1316769-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109442867-A |
| priorityDate |
1995-07-21^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |