http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105399067-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C249-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C249-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C251-88 |
| filingDate | 2015-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105399067-B |
| titleOfInvention | A kind of method for improving ketazine yield in ketazine process hydrazine hydrate still-process |
| abstract | The invention discloses a kind of method of the raising hydrazine hydrate yield in preparation of hydrazine hydrate by use of ketazine still-process.It after the by-product salt solution heat exchange after heat exchanger and destilling tower processing first by the reaction solution of synthetic reaction during ketazine process hydrazine hydrate production by being sent into destilling tower, and reacting liquid temperature is 90 110 DEG C after heat exchangeï¼›Then gas phase acetone is passed through between 5 15 blocks of column plates under input of column plate, the mass ratio of the acetone and reaction solution is 0.2 0.4ï¼›Hydrazine reaction generation ketazine is hydrated in gas phase acetone and reaction solution, react the light component ketazine of generation and the acetone of excess is separated by distilling from liquid, through recovered overhead, tower reactor hydrazine hydrate content is reduced, avoids the hydrazine hydrate of generation from draining with by-product salt solution, so as to improve hydrazine hydrate yield, hydrazine hydrate yield reaches more than 95%, hydrazine hydrate content is less than 1.5g/L in by-product brine, reduces the follow-up intractability of by-product brine, reduces the consumption for the treatment of agent. |
| priorityDate | 2015-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.