http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108373427-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-16 |
| filingDate | 2018-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108373427-B |
| titleOfInvention | Separation method of waste liquid containing 3-methylpyridine and acetonitrile |
| abstract | The invention discloses a method for separating waste liquid containing 3-methylpyridine and acetonitrile, which is characterized by comprising the following steps: a. the mass ratio of acetonitrile to water in the mixed solution of 3-methylpyridine and acetonitrile is more than or equal to 4: 1; b. adding the mixed solution of 3-methylpyridine and acetonitrile into a separation tower for heating treatment to obtain an azeotropic mixture of acetonitrile and water at the tower top, and obtaining a crude product of 3-methylpyridine from a tower kettle; c. and dehydrating the azeotropic mixture of acetonitrile and water to obtain the industrial-grade acetonitrile. The method for separating the waste liquid containing 3-methylpyridine and acetonitrile can recycle acetonitrile and 3-methylpyridine from the mixed waste liquid of the 3-methylpyridine and the acetonitrile, and industrial-grade acetonitrile and 3-methylpyridine products can be obtained from the acetonitrile-containing waste liquid treated by the method. The method of the invention not only recycles the acetonitrile and the 3-methylpyridine, but also reduces the waste and the pollution. |
| priorityDate | 2018-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.