http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2007520467-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D323-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D323-06 |
| filingDate | 2004-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2007-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2007520467-A |
| titleOfInvention | Method for separating trioxane from a trioxane / formaldehyde / water mixture using pressure swing-rectification |
| abstract | a) preparing a use stream (I) containing formaldehyde as a main component and trioxane and water as subcomponents, b) a return stream containing trioxane as a main component and formaldehyde and water as subcomponents A use stream (Ia) containing formaldehyde as main component and trioxane and water as auxiliary components is obtained, and c) the use stream (Ia) is 0.1% in the first distillation stage. Distillation at a pressure of ˜2.5 bar, wherein stream (II) containing formaldehyde as the main component and water as secondary components, and stream (III) containing water and formaldehyde as the main components trioxane and secondary components D) stream (III), optionally after separation of low boilers from stream (III) in the low boilers-separation stage In the second distillation stage at a pressure of 0.2 to 17.5 bar, in which the pressure in the second distillation stage is 0.1 to 15 bar higher than the pressure in the first distillation stage, A stream (IV) consisting essentially of trioxane, and a stream (V) containing trioxane as a main component and water and formaldehyde as secondary components, and e) optionally a stream (V) with water as a main component. Is obtained with a stream Va having a higher water content than stream (V), wherein stream (Va) comprises trioxane as main component and water and subcomponents Containing formaldehyde, f) the stream (V) or (Va) is distilled in a third distillation stage at a pressure of 1-10 bar, wherein the stream consists essentially of water (VI), and the main components Trioxane and due to the recycle stream containing water and formaldehyde (VII) is obtained as a secondary component, formaldehyde, trioxane method of separating from use flow (I) consisting of trioxane and water Te. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011506720-A |
| priorityDate | 2003-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.