http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107940901-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F26B17-107 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F26B21-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F26B3-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F26B25-006 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F26B17-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F26B25-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F26B3-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F26B21-04 |
| filingDate | 2017-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107940901-B |
| titleOfInvention | A kind of 3,3'-dimethyl-4,4'-diaminodiphenylmethane closed-circuit circulation drying process |
| abstract | The invention discloses a closed-circuit circulation drying process of 3,3'-dimethyl-4,4'-diaminodiphenylmethane. It adopts a closed-circuit drying process. Under the action of hot air, the wet material evaporates the solvent, and the tail gas brings out the o-toluidine and MDT products. After cyclone separation, bag dust removal, and medium-efficiency filter dust removal, the dust content in the tail gas is consistent with the gas cycle. and compressor requirements, then enter the condenser, condensate and recover o-toluidine and water, reduce the content of o-toluidine in the circulating air, so that the concentration of o-toluidine in the tail gas is always lower than the lower explosion limit; The fan is pressurized and re-circulated in the drying process system to improve its drying effect; during the drying process, the waste gas is removed by bag dust removal and medium-efficiency filter to remove MDT particles, so that the dust content in the gas meets the requirements of gas circulation and compressor, and realizes closed-circuit gas circulation; The residual o-toluidine in the waste gas is condensed and recovered, avoiding the emission of toxic gases, and has good economic and environmental effects. |
| priorityDate | 2017-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.