http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111606874-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-009 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-126 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-68 |
| filingDate | 2020-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111606874-B |
| titleOfInvention | A method and device for preparing 2,5-furandicarboxylic acid by combined technology of microwave-induced strengthening and azeotropic distillation |
| abstract | The invention discloses a method and a device for preparing 2,5-furandicarboxylic acid by the combined technology of microwave induction strengthening and constant boiling rectification water removal. The device organically combines microwave-induced strengthening and azeotropic distillation to remove water. The steps of the method are as follows: 1) open the reaction kettle and stir, add sulfolane, hexanedioic acid (salt), sulfuric acid, petroleum ether, and wave absorbing agent to the reaction kettle in turn, turn on the microwave oven and the temperature control system, and set the temperature at 95 to 120° C. The reaction is continued for 0.5~3 h, and the water produced by the reaction and the petroleum ether form an azeotrope and slip out from the top of the tower; 2) After the reaction is completed, cool down, release the reaction liquid, filter out the absorber for reuse, and the filtrate is neutralized by alkali, reduced The sulfolane is recovered by pressure distillation, and the 2,5-furandicarboxylic acid product is obtained after crystallization and recrystallization. The invention greatly reduces the reaction time required for preparing 2,5-furandicarboxylic acid through dehydration and cyclization of hexanedioic acid (salt) by inducing coupled microwave strengthening through the wave absorbing agent, thereby greatly improving the space-time yield thereof. |
| priorityDate | 2020-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.