| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a4d3ea8074b1f14fa85f48140c8b5b38 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00024
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2252-103 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1493
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-78 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-14 |
| filingDate |
2018-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2022-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_92919a3725f5c63c1154971253e96250
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6f3d9c7b3e44fb3e42cef89d40c5176c |
| publicationDate |
2022-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-11292719-B2 |
| titleOfInvention |
Plant for the production of nitric acid, a related process and method of revamping |
| abstract |
A dual-pressure plant for the synthesis of nitric acid comprising: a reactor ( 4 ) providing a gaseous effluent ( 15 ) containing nitrogen oxides; an absorption tower ( 6 ) nitrogen oxides react with water providing raw nitric acid and, said absorption tower operating at a pressure greater than the pressure of the reactor; a compressor ( 5 ) elevating the pressure of the reactor effluent ( 15 ) to the absorption pressure; said plant also comprising a first bleacher ( 37 ) and a second bleacher ( 7 ), said first bleacher ( 37 ) stripping with air ( 39 ) nitrogen oxides from the output stream ( 27 ) of the absorption tower ( 6 ) providing a partially stripped nitric acid stream ( 40 ) and a nitrogen oxides-loaded air stream ( 41 ), the former being fed to the second bleacher ( 7 ) and the latter being recycled to the delivery-side of said compressor ( 5 ). |
| priorityDate |
2017-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |