| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b051f9f7933c758e66f6ceda5c9fb2cc |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02C20-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-206
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-204 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-4693
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J47-127
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-445
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-52 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-26 |
| filingDate |
1997-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fefca8a2311d4827f6a3793b1aa7d452
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73ba6befc814a477160ec8a145a94dd1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23e0c1dc52ac91fc5cafa081a6577a58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_44eec5ed42c656215d27296a231f7703 |
| publicationDate |
1998-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0839568-A1 |
| titleOfInvention |
Fluorochemical recovery and recycle using membranes |
| abstract |
Fluorochemicals are separated from a feed gas stream containing a diluent gas and fluorochemicals by compressing (20) the gas stream to an elevated pressure typically above 480 kPa; heating (22) the elevated pressure gas stream to an elevated temperature (typically 35-65°C); contacting the heated gas stream with a semi-permeable membrane (24) to provide a permeate stream (26) rich in the diluent gas and a retentate rich in fluorochemicals; contacting (30) the retentate with one or more additional semi-permeable membranes which are selectively more permeable to the diluent gas than the fluorochemicals to provide a second permeate stream (18) rich in the diluent gas and a second retentate (32) rich in fluorochemicals; and recycling the second permeate stream (18) to be compressed (20) with the feed gas stream to the elevated pressure. Preferably, the second retentate (32) rich in fluorochemicals is further purified (34) by adsorption or low temperature rectification to provide a fluorochemical-rich product stream (38) and a diluent-rich vent stream (36). |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0145826-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6482251-B1 |
| priorityDate |
1996-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |