http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104130105-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-76 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-76 |
| filingDate | 2014-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104130105-B |
| titleOfInvention | The method that in D-4-methylsulfonylphserine serine ethyl ester production, ethanol is recycled |
| abstract | The present invention relates to the method that in the production of a kind of D-4-methylsulfonylphserine serine ethyl ester, ethanol is recycled, step is as follows: the first ammonia of the reaction mother liquor obtained with pmethylsulfonyl phenyleneserine copper synthetic route is analysed, and redistillation concentrates, and distills ethanol and is collected in tundish; Concentrated solution obtains product filter cake through press filtration, and filtered solution is sent into rectifying tower and is separated after copper removal, and coarse ethanol enters tundish by tower top discharge and mixes with distillation ethanol after condensation; Mixed ethanol is delivered to vaporizer, and the aqueous ethanol steamed from vaporizer enters Pervaporation membrane separator dehydration, and Pervaporation membrane separator retains side and obtains high purity ethanol, and high purity ethanol is as reaction raw materials recycle; And penetrating fluid returns further to rectifying tower and recycles.Present invention process process is simple, and facility investment is few, and energy consumption is low, and the ethanol rate of recovery is high. |
| priorityDate | 2014-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.