http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105693489-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C47-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-058 |
| filingDate | 2016-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105693489-B |
| titleOfInvention | The classification recycling system and method for dilute formaldehyde in a kind of paraformaldehyde production |
| abstract | The present invention relates to chemical production technical field, and in particular to the classification recycling system and method for dilute formaldehyde in a kind of paraformaldehyde production.The system is that formalin basin is connected by pipeline with evaporator, the evaporator is connected by pipeline with distillation still, the distillation still is connected by pipeline with drier, the drier is connected by pipeline with absorption tower, the absorption tower is connected by pipeline with stillpot, the turbid liquid outlet of stillpot is connected with evaporator and methenamine workshop respectively by pipeline, and the stillpot purified liquor outlet is connected by pipeline with Formaldehyde Production workshop.The mixed solution for including dilute formaldehyde and dust inside absorption tower is carried out into precipitation by stillpot to be separated by filtration, supernatant liquor returns formaldehyde workshop and acts on behalf of soft water recycling；Lower floor, which beats toward methenamine Workshop Production methenamine, or the poly- concentration section of paraformaldehyde at turbid night, to continue to produce paraformaldehyde.Using invention increases formaldehyde yield, the economic loss in methenamine workshop is reduced. |
| priorityDate | 2016-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.