http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2197566-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_664f5b543543aac4cf0153a4ef4e0f85 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-14 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C249-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-1418 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D201-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D227-087 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D201-06 |
| filingDate | 1999-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2004-01-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b695cd5aa370a24020cb62a3da21b3a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b15efb7d7245236f70aa48827e0d779 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_807b966fe3ce895adb9d0f25d8a11951 |
| publicationDate | 2004-01-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2197566-T3 |
| titleOfInvention | METHOD OF PRODUCTION OF HYDROXYLAMONY PHOSPHATE IN THE SYNTHESIS OF CAPROLACTAMA. |
| abstract | A method for the production of caprolactam, comprising: (a) reacting air with ammonia gas in an ammonia conversion zone to produce nitric oxide; (b) oxidize at least a part of the nitric oxide to nitrogen dioxide to produce a working gas stream rich in NOx. (c) reactively absorb the NOx rich gas stream with a solution containing phosphoric acid in an adsorption zone to form nitrate ions; (d) contacting nitrate ions with air in the degassing zone to produce a nitrate-rich aqueous working stream; (e) reduce the nitrate rich aqueous stream with hydrogen in the presence of phosphoric acid to produce hydroxylammonium phosphate; (f) oxygenate hydroxylammonium phosphate with cyclohexanone to produce cyclohexanone oxime; and (g) convert cyclohexanone oxime into caprolactam; characterized by adding supplemental oxygen in a gaseous stream containing more than about 50% by volume of oxygen, downstream of the ammonia conversion zone, directly in the degassing zone, or in a secondary air stream that provides air to the degassing zone, to increase the amount and rate of formation of nitrogen dioxide in the NOx-rich working gas stream, the supplemental oxygen being added in the proportion of about 1, 8 to 4, 0 moles of oxygen per mole of additional NO produced in the ammonia converter as a result of the addition of supplemental oxygen; increase the amount of ammonia gas added to the ammonia conversion zone to increase the production of nitric oxide formed in the ammonia conversion zone; and divert a portion of the secondary air from the degassing zone to the ammonia conversion zone. |
| priorityDate | 1998-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.