http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108358874-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-50 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D305-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12 |
| filingDate | 2018-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108358874-B |
| titleOfInvention | Multi-section production method and device for diketene |
| abstract | The invention relates to a multi-stage production method in diketene production, which comprises the following steps: a. conveying the exhausted air after cracking absorption to a No. 1-3 circulating cooling tank, opening a water ring vacuum pump for circulating cooling absorption, collecting the absorption liquid into a seed tank when the concentration of acetic acid in the absorption liquid reaches 15%, pumping the absorption liquid in the seed tank into a dilute acetic acid large tank, and then entering a concentration working section for concentration; b. after the hydrolyzed waste gas is absorbed by a water washing tower, the waste gas from the water washing tower is directly sent to a sodium hydroxide absorption tower to be neutralized and absorbed with the butyl ester recovered waste water and sodium hydroxide liquid, the absorbed waste gas (PH is more than 8) is directly emptied, and the waste liquid is conveyed to a decontamination water station; c. the liquid after hydrolysis and the liquid in the water washing tower enter a dilute acetic acid vat and enter a concentration working section. The invention has the advantages that the consumption of glacial acetic acid and raw materials is reduced in the system; the waste gas and sewage generated in the production process are digested and absorbed, and the aims of energy conservation, emission reduction and environment-friendly production are finally achieved. |
| priorityDate | 2018-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.