http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108101776-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-1285 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-47 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-47 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-128 |
| filingDate | 2017-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-11-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108101776-B |
| titleOfInvention | Recovery method of intermediate product in production process of 2, 2-difluoroethanol |
| abstract | The invention relates to a method for recovering an intermediate product in a 2, 2-difluoroethanol production process, and belongs to the technical field of fluorine chemical industry. According to the method for recovering the intermediate product in the production process of the 2, 2-difluoroethanol, the filter cake is washed by solvents such as acetone, methanol or ethanol, so that the residual potassium hydroxybutyrate in the filter cake is dissolved in the solvents, then the solution is collected into a storage tank, and the solution in the storage tank is conveyed into an evaporator by a pump for evaporation and separation. And (4) feeding the residual materials in the evaporator into a storage tank with stirring, feeding the residual materials into a centrifugal machine, separating out potassium hydroxybutyrate solid, and recycling the solid to a reaction system. The separated liquid material is collected in a storage tank and returned to the evaporator. The method can prolong the service life of the filter cloth and ensure the continuous and stable operation of the device. And the potassium hydroxybutyrate in the filter cake is separated and recovered and is reused in the reaction kettle, so that the yield of the 2, 2-difluoroethanol is improved. The method has easily obtained raw materials and convenient operation. |
| priorityDate | 2017-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.