http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106349190-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D305-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12 |
| filingDate | 2016-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106349190-B |
| titleOfInvention | The method of rectification residue and liquid extraction ketene dimer after pump |
| abstract | The present invention relates to the methods of rectification residue and liquid extraction ketene dimer after pump, comprise the following steps：A, in hydrolysing step, level-one residue is with liquid after pump with 2:1 ratio mixing, 65-75.C is heated to by kestner long-tube evaporator, ketene dimer is evaporated, the crude product ketene dimer to be cooled down by level-one, secondary condenser enters high-level storage groove and enters rectification section together after the crude product ketene dimer mixing that polymerization workshop section generates；B, the two level residue and the aceticanhydride of condenser that kestner long-tube evaporator is formed, which are entered in hydrolysis workshop section, to be hydrolyzed, and obtains acetone, spirit of vinegar and solid waste residue；C, the tail gas of workshop section is hydrolyzed, send to water scrubber and absorbs.It is an advantage of the invention that the ketene dimer by kestner long-tube evaporator heating recovery, improves the yield of ketene dimer in internal system, reduce the consumption of glacial acetic acid, the exhaust gas and residue of production process generation, the zero-emission largely reduced with sewage of solid waste are digested and assimilated. |
| priorityDate | 2016-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.