| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7580a1cdb7bf704802f84446f901fbf7 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C15-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-13 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C15-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-13 |
| filingDate |
2002-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2005-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c30f53771ecac422986a7403c0f23c9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6846484e8452164e7c213b7f07153b44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_07904cc80ffccaa1fa837bc8c2ece927 |
| publicationDate |
2005-01-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6838588-B2 |
| titleOfInvention |
Process for co-producing para-xylene and metaxylene, comprising two separation steps |
| abstract |
A process is described for co-producing metaxylene and paraxylene from a hydrocarbon feed comprising two separation steps. The first step of the process is a counter-current simulated moving bed system in a chromatographic column containing at least five zones, comprising injecting the feed and injecting a desorbent and delivering an extract, a raffinate and an intermediate raffinate either continuously or discontinuously. The extract is distilled to obtain a paraxylene with a purity of at least 99.7%. The raffinate, which is richer in metaxylene, is distilled to extract the desorbent and injected into a counter-current simulated moving bed continuously delivering an extract and a raffinate. One of these two streams is enriched in metaxylene. The most metaxylene-rich stream is distilled to obtain metaxylene with a purity of more than 99%. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7728187-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7838714-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7759534-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009036726-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009326310-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009018380-A1 |
| priorityDate |
2001-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |