http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113735363-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8a483df1d4b5ea677dd937c512c750f2 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2001-007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-001 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-007 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-10 |
| filingDate | 2021-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_679a346bd42a9ddaf1551457205b79f5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_55c645644412e5f793aa05936acb272e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_43e05e8392a0405c22952b3055c8f9f9 |
| publicationDate | 2021-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113735363-A |
| titleOfInvention | A kind of treatment method of chrome tanning waste liquor |
| abstract | The invention discloses a treatment method of chrome tanning waste liquor, and relates to the technical field of light industry and environmental protection. In the treatment method provided by the invention, the chrome tanning waste liquid is subjected to pre-filtration treatment, and solid impurities are filtered out to obtain a chrome tanning filtrate; the chrome tanning filtrate is heated to 50-80° C. and continuously stirred, and oil is slowly added to the chrome tanning filtrate. Sodium solution until no more precipitation reaction product is produced, continue to maintain the reaction temperature of 50~80℃ for 1h, then cool to room temperature and stand for 8h~15h, filter out the precipitation reaction product to obtain chromium oleate saponification; The chromium saponified compound is sent into the sulfuric acid solution to react for 0.5h, cooled to obtain a layered mixed solution formed by the chromium sulfate solution and oleic acid; the chromium sulfate solution is separated from the layered mixed solution and modified to obtain a chrome tanning agent. The invention extracts trivalent chromium ions in the chrome tanning waste liquor by oleic acid, and at the same time of efficiently separating and extracting the chromium, the product is fully utilized to carry out the cyclic chrome extraction operation, so as to achieve the technical effects of improving the treatment efficiency of the chrome tanning waste liquor and improving the chrome recovery efficiency. . |
| priorityDate | 2021-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 79.