http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110869342-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/B01J27-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-445 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C53-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J23-468 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0231 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C53-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-44 |
| filingDate | 2018-07-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76d313d9eb84f797bee83bf326374f4f |
| publicationDate | 2020-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110869342-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, (1) acetaldehyde as a by-product is separated and removed from the process stream in an industrially advantageous manner; and, (2) crotonaldehyde in the acetic acid stream obtained from the de-lowering column is removed The concentration is controlled to be below a specific value, and/or the reflux ratio of the second distillation column is controlled to be 0.1 or more, and (3) the aqueous phase and/or the organic phase of the condensate from the top of the low-boiling tower are controlled to be decrotonaldehyde. In the step of performing distillation in the tower, the decrotonaldehyde removal tower is operated so that the reflux ratio of the lower boiling tower is 2 or more (in the case of refluxing the aqueous phase), and specific conditions are satisfied. |
| 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: 72.