http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109438283-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-009 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-24 |
| filingDate | 2018-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109438283-B |
| titleOfInvention | Synthesis method and device of beta-aminopropionitrile |
| abstract | The invention relates to the technical field of chemical synthesis processes, in particular to a method and a device for synthesizing beta-aminopropionitrile. The synthesis method of the beta-aminopropionitrile comprises the following steps: (a) after acrylonitrile reacts with ammonia water, beta-aminopropionitrile is distilled and collected; (b) mixing the residual waste liquid after distillation with ammonia water, heating and reacting to obtain a mixed liquid, distilling the mixed liquid to collect beta-aminopropionitrile, and recovering the distilled waste liquid to react with the ammonia water; wherein the distillation conditions in step (b) comprise: and distilling the mixed solution by adopting a steam distillation method to collect the beta-aminopropionitrile, wherein the steam distillation comprises at least two stages of steam distillation, and the steam pressure gradient of the steam distillation of each stage is increased. The invention can effectively control the temperature of a distillation system to be not more than 120 ℃ and prevent the substance components in the waste liquid from being damaged by regulating and controlling the process conditions while ensuring the distillation yield of the product beta-aminopropionitrile, can be used as a raw material for reaction, and improves the yield of the beta-aminopropionitrile. |
| priorityDate | 2018-12-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.