http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100744754-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C63-26 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 |
| filingDate | 2005-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2007-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2007-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-100744754-B1 |
| titleOfInvention | Method for producing aromatic carboxylic acid |
| abstract | The present invention relates to a method for producing an aromatic carboxylic acid, and more particularly, supplying the hot mother liquor of the purification process to the upper part of the dehydration column and supplying the hot condensate obtained from the first condenser to the upper part (first step); The condenser is installed in three or four stages, the hot condensate from the first condenser is refluxed to the dehydration tower, and the exhaust gas from the first or second condenser is removed from the stripper in the condensate of the third condenser. The carboxylic acid and methyl acetate are removed, and the exhaust gas at 80-130 ° C. from the second or third condenser is fed to the hydrolysis tower to convert methyl acetate to acetic acid, and the condensate under the stripper needs hot water during the purification process. Supplying to the place, and removing the rest to the wastewater treatment plant (second step); And the exhaust gas from the last condenser is fed to the bottom of the absorber to absorb unreacted alkyl substituted aromatic compounds and unreacted lower aliphatic carboxylic acid esters in the exhaust gas by lower aliphatic carboxylic acids, and the liquid discharged from the lower portion of the absorber is oxidized. Recycled to the process, the upper end of the absorber provides an aromatic carboxylic acid production process comprising the step of absorbing the lower aliphatic carboxylic acid in the exhaust gas (water). According to the present invention, it is possible to eliminate the blockage of the dehydration tower, improve energy recovery efficiency, and significantly reduce the amount of unreacted alkyl substituted carboxylic acid and lower aliphatic carboxylic acid. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102040269-B1 |
| priorityDate | 2005-12-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.