http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007015935-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f70398b54378e0225e0ad5163833ff42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_47cda3928f1e9cf01f0809811c7fd2e5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_087549da5965adc14d8a399ebe3b051a http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1470cee9a6a9e16cd883a661da2257b4 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-47 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-47 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-255 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-16 |
| filingDate | 2004-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de2e82cec2560ef06e30d1840e651876 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_159f9df449188418e24fac266487852d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8329ffe3f4223896af4f356f17fae4ba http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25d7bc77ee4c0b838e81bff612258967 |
| publicationDate | 2007-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2007015935-A1 |
| titleOfInvention | Method for producing high purity terephthalic acid |
| abstract | In the process for producing a high-purity terephthalic acid of the invention, a slurry of crude terephthalic acid crystals dispersed in an acetic acid solvent, which is produced by a liquid-phase oxidation of p-alkylbenzene in the acetic acid solvent, is continuously converted into a slurry in water by a mother liquor displacement and then subjected to a catalytic hydrogenation. The acetic acid solvent slurry is introduced into a column equipped with a central shaft having a plurality of stirring blades along a vertical direction thereof from an upper portion of the column. The crude terephthalic acid crystals are allowed to sediment to form a high-concentration zone of terephthalic acid crystals in the column. A displacing water is fed into the column from a bottom portion thereof so as to form an upward flow of water in the column while forming circular flows in the high-concentration zone by rotation of the stirring blades, thereby bringing the terephthalic acid crystals into counter-current contact with the upward flow of water. The terephthalic acid crystals after counter-current contact with the upward flow of water is discharged from a bottom portion of the column together with the displacing water, while simultaneously taking the acetic acid solvent out of a portion of the column disposed above a feed portion for introducing the acetic acid solvent slurry. By the process, the acetic acid solvent of the acetic acid slurry is displaced by water in a high degree of mother liquor displacement. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006254622-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011108420-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2017188201-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2011152878-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011145424-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9339778-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7655097-B2 |
| priorityDate | 2003-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.