http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2018179457-A1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C53-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C53-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-44 |
| filingDate | 2017-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-WO2018179457-A1 |
| titleOfInvention | Method for producing acetic acid |
| abstract | Provided is a method by which high-quality acetic acid having a good potassium permanganate test value and a low impurity content can be produced industrially and efficiently without incurring great costs. The method for producing acetic acid according to the present invention includes a carbonylation reaction step, an evaporation step, and a delow boiling step. By heating the evaporation tank, (i) the concentration of acetaldehyde in the aqueous phase of the delow boiling tower overhead condensate is 2340. And / or (ii) a methyl acetate concentration in the aqueous phase of less than 19.0% by mass, and / or (iii) a methyl acetate concentration in the organic phase of the deboiling tower overhead condensate. While controlling to less than 38.0% by mass, at least a part of the aqueous phase is treated in the acetaldehyde separation and removal step, and the remaining liquid after the separation and removal of acetaldehyde is removed from the reaction tank and / or the acetaldehyde separation and removal step and / or others. Recycle to the process. |
| priorityDate | 2017-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 58.