http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110694319-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2201-202 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D29-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D29-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D239-69 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D239-69 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D29-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D29-58 |
| filingDate | 2019-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110694319-B |
| titleOfInvention | High-purity decolorizing and filter pressing process of sulfadoxine |
| abstract | The invention discloses a high-purity decolorizing and filter-pressing process of sulfadoxine, wherein the decolorizing process of activated carbon comprises the steps of adding activated carbon into a crude sulfadoxine dissolving solution for adsorbing impurities, cooling and feeding the cooled activated carbon into a filter press for filtering, wherein the filter press comprises a filter-pressing cavity body, the bottom of the filter-pressing cavity body is provided with a sulfadoxine filtrate outlet, the upper part of the filter-pressing cavity body is provided with a feed inlet, the feed inlet is provided with a filter-pressing cavity cover plate in a matched mode, the filter-pressing cavity body is connected with an external pressure device through the filter-pressing cavity cover plate and used for injecting pressure into the filter-pressing cavity body, the inner periphery of the filter-pressing cavity body is fixedly provided with a first filter-pressing mechanism and a second filter-pressing mechanism which are distributed at intervals from top to bottom, the first filter-pressing mechanism is close to the feed inlet, the mesh range of the first filter-pressing mechanism is 60-80 meshes, the second filter-pressing mechanism is close to the sulfadoxine filtrate outlet, and the mesh range of the second filter-pressing mechanism is 100-120 meshes; according to the filter pressing device, through the structural design of the filter pressing device, the decolorant and impurities in the decoloring process can be removed in a high content, and the purity of the sulfadoxine finished product is further ensured. |
| priorityDate | 2019-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.