http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2000086577-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7ef01e33058cf740cf2197991be97af1 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-265 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-26 |
| filingDate | 1998-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9bc482f18f14b89b69b55a9557b3e9d4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_35aa84e6edf883d44a8321ff8f3a985f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_27e8c51cf20c184100ed52441c448407 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ffb50b259a63270b389c7a681c5799f |
| publicationDate | 2000-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2000086577-A |
| titleOfInvention | Method for producing high-purity terephthalic acid |
| abstract | (57) [Summary] [PROBLEMS] To increase the concentration of terephthalic acid to efficiently perform hydrogenation treatment, to facilitate the handling as a low slurry concentration at the time of crystallization, and to reduce the initial pressure. It can be used to transfer liquids for processing, reducing the use of equipment such as pumps and condensers, making the equipment smaller and simpler, and using less energy. Produce high-purity terephthalic acid at low cost. SOLUTION: CTA (crude terephthalic acid) is placed in a dissolution tank 11. And water are introduced, high-pressure steam is blown from L21 to pressurize, and the temperature is raised to 250 to 350 ° C. to dissolve CTA, The aqueous solution is subjected to a hydrogenation treatment in a hydrogenation reactor, and the treated liquid is introduced into the first to final crystallization tanks 3 and 4, and L22, L2 Crystallization is performed by supplying low-temperature water from 3 and lowering the temperature, and solid-liquid separation is performed in the first separator 5, the crystals are re-slurried in the re-slurry tank 6, and solid-liquid separation is performed in the final separator 7. The crystals are dried by a dryer 8 to obtain high-purity terephthalic acid. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8178716-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007129669-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-5296534-B2 |
| priorityDate | 1998-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.