| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b051f9f7933c758e66f6ceda5c9fb2cc |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2230-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2245-90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F17C2265-05
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2230-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F17C2225-0123
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2245-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F17C2227-0309
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2210-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F17C2223-033
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F17C2223-0161
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F17C2221-033
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J2240-12 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J1-004
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J1-0042
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04351
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J1-0234
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04387
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J1-0224
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J1-0045
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-0406
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04266
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J3-04224
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25J1-0015
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F17C9-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F17C9-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F25J1-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F25J3-04 |
| filingDate |
1992-04-23^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1995-02-24^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_465a8d206bdad61d9536ca01335351ba
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c1efbbedb43825d91c59979d72419ed1 |
| publicationDate |
1995-02-24^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
FR-2675891-B1 |
| titleOfInvention |
PROCESS FOR PRODUCING LIQUID NITROGEN USING LIQUEFIED NATURAL GAS AS THE ONLY REFRIGERANT. |
| abstract |
The present invention relates to a process for liquefaction of a nitrogen stream produced by a cryogenic air separation unit. Cold liquid natural gas (LNG) is employed as refrigerant. A critical feature step of the invention is that the temperature of the vaporizing LNG should be maintained at a temperature lower than the critical temperature of the nitrogen stream being liquefied. The process involves compressing the nitrogen stream to at least 350 psi in a multistage compressor wherein interstage cooling is provided by heat exchange against vaporizing LNG. Further cooling and flashing of a portion of the liquid nitrogen stream serves to produce a quantity of liquid nitrogen that is free of hydrocarbon contamination and suitable for recycle to the air separation unit. |
| priorityDate |
1991-04-26^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |