http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113480473-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_baa0a9228199c9db2bf957ef1b3279bb |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-366 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-268 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-362 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-22 |
| filingDate | 2021-06-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fa0ded896a9e793d32075b92c50d758c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a8a5bd27794ea0e48973744763ec5ad0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d2f5db1f93c0d0ab0dfd261ebbf70f7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2f3bd4625bf4518bfc4b906b58ba350c |
| publicationDate | 2021-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113480473-A |
| titleOfInvention | Method for recovering and purifying pyridine waste liquid |
| abstract | The invention discloses a method for recovering and purifying pyridine waste liquid, which comprises the following steps: taking the agricultural chemical waste containing sulfonate, sodium chloride and pyridine, introducing the agricultural chemical waste into a pressure swing rectifying tower at a certain flow rate, and rectifying the waste at a certain temperature and pressure; the method for recovering and purifying the pyridine waste solvent provided by the invention has the advantages that the waste pyridine waste with the purity of only 50-70% (wt) is purified to industrial grade pyridine with the purity of more than or equal to 99.9% (wt) through a series of procedures with low energy consumption, such as pressure swing rectification, pervaporation membrane coupling rectification dehydration, azeotropic solvent recycling, product side line extraction and tower kettle material rake dryer drying, so that the waste solvent pyridine is recycled, the pollution degree of the waste solvent to the environment in the agricultural chemical industry, novel pesticide and novel technology polypeptide production is reduced, and the production cost is saved. The purification method provided by the invention also has the advantages of high yield, low energy consumption, good quality, capability of recycling, simple and convenient production process, stable operation, suitability for industrial production and the like. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-116332835-A |
| priorityDate | 2021-06-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.