http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0261482-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_77a6dd23790a6682cfc9062363badc85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_80787665b837ed3eb503bbcd27c0043a |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2220-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2215-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2200-30 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04224 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04284 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-044 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04351 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F25J3-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F25J3-02 |
| filingDate | 1988-08-24^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f15e100fc21889ee109fee4e92174f20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_40689361b9dd8bdb82dff8aa7cfd534f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c92cca20af5f2ed1e34819f9a67e0df8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8a9b8773d862b90f84daaa20e1e7e433 |
| publicationDate | 1990-03-01^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0261482-A |
| titleOfInvention | Method and device for manufacturing ultra-high purity nitrogen |
| abstract | PURPOSE:To collect ultra-high purity nitrogen containing the oxygen content of less than 1ppb by a method wherein a nitrogen circulating circuit consisting of a nitrogen booster, a nitrogen heat exchanger, an auxiliary fractionating tower and an auxiliary condenser is provided to introduce nitrogen gas, roughly fractionated in a fractionating tower, into the lower part of the auxiliary fractionating tower and fractionate it further. CONSTITUTION:Material air is cooled in an air heat exchanger 4 and enters into the lower part of a fractionating tower 5 under a condition that one portion thereof is liquefied. One portion of nitrogen in the upper part of the fractionating tower 5 is introduced into the lower part of an auxiliary fractionating tower 10 through a conduit 9 in the condition of liquid. Subsequently, liquid nitrogen, taken out of the lower part of the auxiliary fractionating tower 10, is gasified in an auxiliary condenser 14 and is boosted by a nitrogen booster 11 in order to produce the ascending gas and circulating liquid of the auxiliary fractionating tower 10, then, is cooled by a nitrogen heat exchanger 13 after being cooled by an after cooler 12 to return it into the lower part of the auxiliary fractionating tower 10. Ultra-high purity nitrogen gas, taken out of the upper part of the auxiliary fractionating tower 10, recovers the temperature thereof to a normal temperature by the air heat exchanger 4 through a conduit 16 and is collected as the ultra-high purity nitrogen. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9119142-A1 |
| priorityDate | 1988-08-24^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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