http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-212864145-U
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_539fa008493b9f17506d2f23417e5fef |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-237 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-235 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-234 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-78 |
| filingDate | 2020-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9cebd6dedeb1f83cd6697286e4f6b5de http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e4b55df112b0f219ccbaaab51918997 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58955ceaadab8a97dcc9ccd62d2a556d |
| publicationDate | 2021-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-212864145-U |
| titleOfInvention | Phosphoric acid dearsenification system |
| abstract | The invention belongs to the field of phosphoric acid preparation, and particularly relates to a phosphoric acid dearsenification system, wherein a reaction tank, a washing tower and a preparation tank are sequentially connected through a pipeline; the upper end of the reaction tank is respectively provided with a defluorination acid inlet, a tail gas outlet and a sodium sulfide solution inlet, a stirring device is arranged in the reaction tank, and the lower end of the reaction tank is connected with a clarifier through a pipeline; the tail gas outlet enters from the bottom of the washing tower, the upper end of the washing tower is provided with a sodium hydroxide inlet, the sodium hydroxide contacts and reacts with the tail gas through a spraying device, the top end of the washing tower is provided with a gas outlet, and the washing liquid enters into a sodium sulfide preparation tank from an outlet at the lower end of the washing tower; the upper end of the preparation tank is provided with a sodium sulfide feeding port, a stirring device is arranged in the sodium sulfide preparation tank, and the sodium sulfide solution which is uniformly stirred is connected with the reaction tank through a lifting pump. The invention can realize good arsenic removal effect without generating hydrogen sulfide polluting gas; reasonable resource utilization and high efficiency. |
| priorityDate | 2020-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.