http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104262299-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D305-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12 |
| filingDate | 2014-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104262299-B |
| titleOfInvention | A kind of ketene dimer production technique of high-efficiency environment friendly |
| abstract | The invention discloses a kind of ketene dimer production technique of high-efficiency environment friendly, comprise the steps: (one), aqueous acetic acid is gasificated into acetic gas, then after mixing mutually with catalyzer, in pyrolyzer, at 680 ~ 698 DEG C of temperature, cracking produces ketene gas, and controlling cracking outlet pressure of furnace is absolute pressure value 2 ~ 20KP; (2) ketene gas, after purification is delivered to absorption unit through vacuum pump, and before control pump, after pump, pressure is respectively 2 ~ 20KP and 100 ~ 120KP, controls absorption liquid difference variation and is less than 10 DEG C; (3), by absorption liquid enter respectively in high and low temperature polymerization tank and carry out once and after polymerization, obtain crude product ketene dimer; (4), crude product ketene dimer is carried out rectification under vacuum and obtain ketene dimer finished product; (5), under the effect of combustion-supporting oxidizing gas medium, control transfer pressure is 6 ~ 10Kgf/Cmn 2 , rectification residue is delivered to roasting kiln and carries out oxide treatment.Above-mentioned technique side reaction is few, product yield is high and produce without solid waste. |
| priorityDate | 2014-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.