http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20100037801-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b50ba61ff65b58757c03507ec6123ed8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d7cd5b011dfb004cb364624f902c4c9c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C31-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-74 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-74 |
| filingDate | 2008-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_081265fdc23d2d164bc86c9616cee752 |
| publicationDate | 2010-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20100037801-A |
| titleOfInvention | High Purity Pentaerythritol Production Method |
| abstract | The present invention relates to a high-purity pentaerythritol manufacturing method, and more specifically, dry pentaerythritol is dissolved in pure water, first evaporated and concentrated to crystallize, and then the crystals are naturally precipitated to filter the suspended mother liquid on the upper part again with a separate filter press. The present invention relates to a method of further improving the purity of mono pentaerythritol by re-injecting the obtained clean mother liquid into an evaporative concentration crystallizer.n n n In the present invention, the mono-penta erythritol content of 85 to 90% by weight of zopenta erythritol is dissolved by mixing with pure water in an evaporation concentrated crystallizer and then concentrated by evaporation to crystallize into a crystalline suspension, the crystalline suspension is slowly stirred with a stirrer While maintaining for a certain time to naturally settle the crystals, and then filter suspension of the upper suspension mother solution to treat the clean mother liquor and back into the evaporation concentration crystallizer, the clean mother liquor and crystalline suspension re-introduced into the evaporation concentration crystallizer Stirring, the crystalline suspension is sent to a centrifuge while maintaining a temperature range of 60 ~ 90 ℃ and separating the mono pentaerythritol and the by-products dipentaerythritol and tripentaerythritol in a centrifuge, the centrifuge The separated mono pentaerythritol crystals in a hot air dryer To remove water and the mono pentaerythritol crystals subjected to the hot air dryer using a two-stage screen separator composed of primary screens and secondary screens having different mesh sizes. It provides a high-purity pentaerythritol manufacturing method characterized in that it comprises the steps of obtaining separately by erythritol.n n n n High purity pentaerythritol, evaporative concentration crystallizer, suspension mother tank, filter press, clean mother liquid tank, pump, centrifuge, hot air dryer, screen separator, stirrer, steam heater |
| priorityDate | 2008-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.