| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_50907fc1b392e2bf592f74fb8123032d |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2252-504
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1475
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2252-2041
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02C20-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2252-20447
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2252-20415 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1406
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1462
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1475
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1425
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-8612
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1493
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1468
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1431
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-75
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B17-0404
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B32-50 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-86
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-75 |
| filingDate |
2017-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c748de8543d527564c5d33065be6424d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b34b4df1d4d4e7f44af1260f8fb55992
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3001b15a0f3a1ccc2f210ed262c1658c |
| publicationDate |
2020-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2020047117-A1 |
| titleOfInvention |
Process for producing a purified gas stream |
| abstract |
The invention relates to a process for removing hydrogen sulfide and carbon dioxide from a feed gas stream. H2S in the feed gas stream is converted to elemental sulfur in a Claus unit. At least a part of the gas stream obtained is contacted with an aqueous lean absorbing medium in an absorption zone at a pressure between 0.9 and 2 bara. The aqueous lean absorbing medium used comprises one or more amines chosen from: —a polyamine in the absence of tertiary amine functionalities having a pKa sufficient to neutralize carbamic acid, the polyamine having at least one primary amine functionality having a pKa smaller than 10.0 at 25° C., —a polyamine in the absence of tertiary amine functionalities having a pKa sufficient to neutralize carbamic acid, the polyamine having at least one secondary amine functionality having a pKa for each sorbing nitrogen smaller than 10.0 at 25° C. The process is improved as compared to a process involving Claus off-gas treatment with (activated) MDEA. Effective CO2 removal is achieved while at the same time a simplified line-up with less equipment can be used. |
| priorityDate |
2016-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |