| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9e0d2278683ad02a8eff0f22f798c272
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4f8f970a38c9969e4ca129bec9dcd2a0 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C273-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C275-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C273-04 |
| filingDate |
2001-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2002-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e92715ed21b3b5672f4873ad43769ee7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_68eb49fc697971e6ca35f1573ec90027
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_782d6b2e0b06f11887f5a114b5267e08 |
| publicationDate |
2002-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6426434-B1 |
| titleOfInvention |
Process for the synthesis of urea |
| abstract |
A urea synthesis process with improved heat economy, wherein a urea synthesis solution obtained by removing most of the unreacted ammonium carbamate by stripping with carbon dioxide at a pressure approximately equal to a urea synthesis pressure is subjected to a high and low pressure decomposition. The gas mixture obtained from the high-pressure decomposition is condensed in at least two steps. Gases obtained from the stripping of the urea synthesis solution, after an initial condensation may be alternatively routed into the high-pressure decomposition column thus facilitating the decomposition of unreacted ammonium carbamate; may be mixed with off-gases from the high-pressure decomposition column and routed to an indirect heat-exchanger for concentrating the aqueous urea solution and facilitating the condensation of the off-gases from the high pressure decomposition column; or may be routed to a condenser for the gas mixture obtained from the high-pressure decomposition after it has underwent indirect heat-exchange with the aqueous urea solution, thus facilitate the further condensation of these gases. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009216045-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8101385-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2436391-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007009907-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8105813-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005124565-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005159351-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2623601-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8039443-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10100316-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2924119-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7687041-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004253679-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10364215-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006193821-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7579450-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2019359559-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007066550-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8853376-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10882820-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3034089-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2017349542-A1 |
| priorityDate |
2000-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |