| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9dce185d9f96b39c8d7c8903d60480cc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d409a5c137990f782f25338ef787cdc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ddac65606de3b966e6f33acf1f1407c8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2030eb52d514e3c485748a7a3d93e3d6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b5474b614d97d3e08e9ae0a8b7fad938 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J21-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J21-063 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-8973
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-894
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-8946
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-8926
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-6562 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-18 |
| filingDate |
2011-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d0fead1ff25e07c6a38af5fa47ccedf7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9a4d65cb9e4f24fee3b82fc2fcf0b40b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_176bea345c9d20989d190cc2a9b41464 |
| publicationDate |
2013-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2013197265-A1 |
| titleOfInvention |
Process of producing oxalate by co gas phase method |
| abstract |
The present invention relates to a process of producing oxalate by CO gas phase method for chiefly solving the technical problem of the low utilization efficiency of nitrogen oxides or nitrous acid esters in the prior art. The present invention solves the problem in a better way by using the following steps including: a gas phase stream V containing NO and methanol and oxygen enter a supergravity rotating bed reactor II and are subjected to the oxidative esterification reaction to produce an effluent VI containing methyl nitrite; a methyl nitrite effluent VII obtained from separating said effluent VI together with a CO gas II enter a coupling reactor II and is contacted with a catalyst II to react to form a dimethyl oxalate effluent VIII and a gas phase effluent IX containing NO; the resultant dimethyl oxalate effluent VIII is separated to obtain a dimethyl oxalate product I; optionally, the gas phase effluent IX containing NO is returned to the step above so as to be mixed with the gas phase stream V containing NO for being recycled. Therefore, the process is applicable to the industrial production of oxalate by CO gas phase method. |
| priorityDate |
2010-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |