http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103804205-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C215-76 |
| filingDate | 2013-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103804205-B |
| titleOfInvention | A kind of technique preparing o-aminophenol |
| abstract | The invention belongs to chemical technology field, it is specifically related to a kind of novel process preparing o-aminophenol, o-aminophenol novel process of the present invention often obtains the sulfur simple substance of the many recovery of o-aminophenol 1.1 1.2 tons of 1 ton, the solid sodium sulfate of 2 tons, after acidifying, available hydrogen sulfide gas generates NaHS by absorption tower and can put into reproduction, four-effect evaporation is utilized to can get the solid waste of 3% 4%, reproduction can be put into, original technique could must be purified by rectification, first pass through distillation and just can improve the purity of o-aminophenol, save the energy and equipment, the waste water produced in production process can recycle, last waste water almost without, impurity is discharged the most during the course and recycles. |
| priorityDate | 2013-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.