http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109534983-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01D5-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 |
| filingDate | 2017-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109534983-B |
| titleOfInvention | Improved method for recovering phenylacetic acid waste liquid in 6-APA production |
| abstract | The invention relates to the field of pharmacy, in particular to an improved method for recovering phenylacetic acid waste liquid in 6-APA production, which comprises the following steps: (1) extracting; (2) degreasing; (3) preserving heat; (4) decoloring and removing impurities; (5) crystallizing; (6) sulfate radical treatment in mother liquor and the like. The method for recovering phenylacetic acid, provided by the invention, has the advantages of decoloring under the condition of a water phase, no use of a solvent, obvious cost saving advantage, high phenylacetic acid recovery rate of over 90%, white product color and high purity of over 99%, and also relates to treatment and recovery of sulfate radicals in mother liquor, so that less inorganic salt is generated, the environmental pollution is low, and the method can be applied to penicillin fermentation. |
| priorityDate | 2017-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 50.