http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111153467-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_858c97da45a2c8b1c1beeea58f8b20da |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2101-163 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F2301-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01F7-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C02F1-42 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F101-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01F7-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-42 |
| filingDate | 2020-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5857fb99779efc525be610c451195bb7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e429f38d4a1815224cd0b5a72829428f |
| publicationDate | 2020-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111153467-A |
| titleOfInvention | Nitric acid wastewater treatment system containing aluminum nitrate and treatment method thereof |
| abstract | The invention discloses an aluminum nitrate-containing nitric acid wastewater treatment system, which comprises a two-stage column separation system and an aluminum sulfate purification system, wherein the aluminum sulfate purification system comprises an aluminum sulfate feeding tank, a preheater, a double-effect three-stage falling-film evaporator, a cooling crystallization tank, a crystallization transfer tank, a filter press, a high-level tank and a scraper, which are sequentially connected, wherein the double-effect three-stage falling-film evaporator is used for evaporating and concentrating an aluminum sulfate solution for multiple times; the aluminum sulfate feeding tank is connected with the aluminum sulfate solution tank. The method for treating the nitric acid wastewater containing the aluminum nitrate based on the wastewater treatment system has small evaporation amount and low production risk; the replacement is thorough, the nitric acid content in the obtained aluminum sulfate solution is less, and aluminum sulfate better than the national standard can be further produced; the process of the invention is more energy-saving, the obtained aluminum sulfate product has higher quality, the integral temperature is not too high, and the process is favorable for long-time stable operation. |
| priorityDate | 2020-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.