http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101445442-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_76cbc6d0f721fb0c9c7ac7aa3157e27d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C53-08 |
| filingDate | 2005-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dc6a4e6f584b120aaf57bf0456c64150 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3fe10297a96d90e5db9c96a7018269b6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab756cad2cd3a46bf0cccb7ccfc4ed52 |
| publicationDate | 2009-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-101445442-A |
| titleOfInvention | Azeotropic distillation method for water-containing acetic acid containing aromatic hydrocarbon |
| abstract | In a recovery system for preparing the acetic acid solvent in aromatic dicarboxylic acid, the unreacted dialkyl benzene is stably recovered from an acid dehydrate tower for azeotropic distillation with high concentration, and the reutilization is carried out. The invention adopts the method that during the process of recovering the acetic acid for preparing the aromatic carboxylic acid, the unreacted dialkyl benzene is recovered by an azeotropic distillation tower taking the isobutyl acetate as an entrainer during the dehydration of the acetic acid, wherein, the alkyl benzene-containing fraction is delivered to a distillate storage tank in the azeotropic area of the azeotropic distillation tower at the temperature of ranging from 94-100 DEG C, after the aqueous phase is separated from the bottom part of the distillate storage tank, the organic phase fraction at the upper part of the distillate storage tank is circulated to the azeotropic area, the organic phase fraction is accumulated in the azeotropic distillation tower until the concentration ratio of the alkyl benzene and the entrainer reaches the target coverage with about 0.5 weight ratio to about 6 weight ratio, and the accumulated organic-phase fraction is intermittently recovered from the distillate storage tank. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110833701-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105017004-A |
| priorityDate | 2005-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.