http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109704990-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-34 |
| filingDate | 2017-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109704990-B |
| titleOfInvention | Refining method of high-purity acetonitrile |
| abstract | The invention relates to a refining method of high-purity acetonitrile. Mainly solves the problems of low product purity, low recovery rate and high energy consumption in the acetonitrile refining process. The research provides a method for refining crude acetonitrile products to obtain medicament-grade acetonitrile, removing propionitrile and allyl alcohol impurities which are difficult to completely remove in the medicament-grade acetonitrile by a sulfuric acid reaction and an adsorbent adsorption method in an adsorption tank, and simultaneously supplying heat to a second separation tower and a tower kettle I of a high-purity separation tower by using a third separation tower to realize heat recycling. |
| priorityDate | 2017-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.