http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2020123090-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c0444efde206a2f829562761e58b7e1e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-12 |
| filingDate | 2018-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76d313d9eb84f797bee83bf326374f4f |
| publicationDate | 2020-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2020123090-A1 |
| titleOfInvention | Method for producing acetic acid |
| abstract | Provided is a method that can industrially efficiently produce acetic acid yielding a good potassium permanganate test result, without costing much. The method includes an acetaldehyde-removing step by which by-produced acetaldehyde is industrially advantageously removed. The method also includes the step of subjecting at least one of an aqueous phase and an organic phase of a light ends column overhead condensate to distillation in a crotonaldehyde-removing column. The light ends column is operated at a reflux ratio of 2 or more (when the aqueous phase is refluxed). The crotonaldehyde-removing column is operated so as to meet at least one of conditions (a-i) to (a-iii) as follows: (a-i) a reflux ratio at the distillation column is 0.01 or more; (a-ii) at the distillation column, the ratio of a crotonaldehyde concentration (ppm by mass) in a distillate to a crotonaldehyde concentration (ppm by mass) in a charge liquid is less than 1; and (a-iii) at the distillation column, the ratio of a crotonaldehyde concentration (ppm by mass) in bottoms to a crotonaldehyde concentration (ppm by mass) in the charge liquid is greater than 1. |
| priorityDate | 2018-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.