http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-2916390-T3
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cb2251193847ca530b52967595559c30 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C63-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-265 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-265 |
| filingDate | 2018-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a0985f7bc1cc6d768d87c55803dc171 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_98b12f29627804a2371c404c96d1aca1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c2882c805c0a9e95bbbb11892e99e84b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8389bd62c3cb8cebe31e62f88099bad4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c153224a7b0ba35e5fa8f2212c8709c9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e9cc101616199df49d59cd2846c7dcbd |
| publicationDate | 2022-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-2916390-T3 |
| titleOfInvention | Method that integrates energy and environment for the production of aromatic dicarboxylic acids by oxidation |
| abstract | A continuous process for preparing an aromatic dicarboxylic acid, comprising: oxidizing a dialkyl substituted aromatic compound with compressed air in a reaction medium of acetic acid in a primary bubble column reactor in the presence of a catalyst to obtain a reaction medium three-phase; removing a portion of the catalyst-containing three-phase reaction medium from the primary bubble column reactor to a post-oxidation bubble column unit fed with compressed air to obtain a post-oxidation reaction medium; transferring the post-oxidation reaction medium to a degassing unit and separating the post-oxidation reaction medium into an upper gas and a lower flow slurry; collecting a top gas from each of the primary oxidation reactors and the post-oxidation reactor with the top gas from the degassing unit and leading the combined top gases to a water removal column (WRC); transferring the underflow slurry from the degassing unit to a digestion unit where the temperature of the underflow slurry is increased to a temperature to at least partially dissolve the precipitated solids and effect further oxidation of intermediate oxidation products exposed with air and catalyst present in the underflow slurry without adding air to the digestion unit, to obtain a final oxidation slurry; removing overhead gases from the digestion unit to the dewatering column; crystallizing the final oxidation slurry to obtain a filter-ready slurry of the aromatic dicarboxylic acid; filtering the filter-ready slurry on a rotary pressure filter to obtain a mother liquor filtrate and filter cake; wherein the overhead gases sent to the stripping column are separated in the stripping column into an off-gas comprising steam stripped from the top of the column and an underflow liquid comprising acetic acid, to which least a portion of the energy of the exhaust gas comprising steam is collected and used to drive an air compressor to supply compressed air to the primary bubble column reactor and the post oxidation bubble column unit, and the water content of continuous oxidation is controlled by removing condensed water from the off-gas from the water stripping column. |
| priorityDate | 2017-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.