http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103119033-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-08 |
| filingDate | 2011-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103119033-B |
| titleOfInvention | The method of separation of tetrahydrofuran |
| abstract | The present invention relates to a kind of from comprising tetrahydrofuran (THF), the method of separation of tetrahydrofuran in the stream of alkanol and higher-boiling compound, it comprises following steps: (a) isolates and comprise tetrahydrofuran (THF) and the alkanol stream as azeotrope in the first distilling period, b () is used in the reactor of esterification maleic anhydride using comprising tetrahydrofuran (THF) and alkanol the feeding at least partially of stream as azeotrope, acquisition comprises tetrahydrofuran (THF), optional alkanol, the stream of optional unreacted maleic anhydride and maleic acid mono alkyl ester, c () will comprise maleic acid mono alkyl ester in after-fractionating section, the stream of tetrahydrofuran (THF) and optional alkanol is separated into the stream comprising maleic acid mono alkyl ester and the stream comprising tetrahydrofuran (THF) and optional alkanol, d the stream comprising tetrahydrofuran (THF) and optional alkanol from after-fractionating section is fed the 3rd distilling period with the part that tetrahydrofuran (THF) and alkanol do not feed reactor in the stream of azeotrope that comprises from step (a) by (), wherein obtain the product stream substantially comprising tetrahydrofuran (THF) and the stream comprising tetrahydrofuran (THF) and alkanol, e the stream comprising tetrahydrofuran (THF) and alkanol from the 3rd distilling period is recycled to the first distilling period or to the reactor in step (b) by (). |
| priorityDate | 2010-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.