http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112941323-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_089d40759d5e23b2760341e8f5fd5ce8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c37ec9224a2f68e07092d3503d511369 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P10-20 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B7-006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B34-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C22B59-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B34-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C22B59-00 |
| filingDate | 2021-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_85e3ca42d517eb59b8766739d7849d74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_810c2da48930b40d2d207823a2f564e3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b2e53808b1563c5ea8b61e53d7d8a047 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8715a1bb8569affd98707820f848af4b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33e9d0a1b40003faa74ee9a0d9a1a32d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2d8d603d61309b4842c1c1bed3d06717 |
| publicationDate | 2021-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112941323-A |
| titleOfInvention | A method for reducing the amount of waste acid and waste residue discharged in the production process of zirconium oxychloride |
| abstract | The invention relates to the improvement of the production process of zirconium oxychloride, and specifically discloses a step-by-step precipitation method for discharging waste acid in the production process of zirconium oxychloride. In the production process of zirconium oxychloride, the evaporation and crystallization process will generate a certain amount of waste acid, and the treatment of waste acid is mainly carried out by lye for neutralization (some enterprises recover the scandium in the waste acid by extraction and then neutralize), there is neutralization. The problem of large amount of waste residue, high water content and high cost of subsequent drying. The invention provides a step-by-step precipitation method for discharging waste acid in the production process of zirconium oxychloride. First, oxalic acid is used for pre-precipitation, and the filtered filtrate is then neutralized with sodium hydroxide. The water content of the waste residue can be reduced by more than 10%, the drying cost of the waste residue can be reduced, and the salt content of the waste residue can be reduced at the source, thereby reducing the total amount of the waste residue and reducing the storage cost. |
| priorityDate | 2021-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.