http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110785397-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c0444efde206a2f829562761e58b7e1e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-48 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C53-08 |
| 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 | 2020-02-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110785397-A |
| titleOfInvention | The preparation method of acetic acid |
| abstract | The present invention provides a method for industrially producing acetic acid having a good potassium permanganate test value without high cost. In the production method of acetic acid, the step of separating and removing acetaldehyde includes separating and removing acetaldehyde as a by-product in an industrially advantageous manner, and removing the aqueous phase and/or the organic phase of the condensate from the top of the low-boiling tower by removing the The process of distilling in the crotonaldehyde column, the reflux ratio of the de-lowering column is set to 2 or more (the case of refluxing the water phase), and at least one of the following conditions (a-i) to (a-iii) is satisfied. The crotonaldehyde removal column is operated in a manner of: (a-i) making the reflux ratio of the distillation column more than 0.01; (a-ii) making the crotonaldehyde concentration (mass ppm) in the distillate of the distillation column and the feed liquid The ratio (the former/the latter) of the crotonaldehyde concentration (mass ppm) in the The ratio (the former/the latter) of the crotonaldehyde concentration (mass ppm) 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: 64.