http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103274432-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D7-12 |
| filingDate | 2013-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103274432-B |
| titleOfInvention | A kind of method of hydrazine hydrate by-product sodium carbonate decahydrate through urea comprehensive utilization |
| abstract | The invention provides the method for a kind of hydrazine hydrate by-product sodium carbonate decahydrate through urea comprehensive utilization, the method pulls an oar the Sodium carbonate decahydrate gone out through freezing and crystallizing, heats up, becomes certain density sodium carbonate solution, through filtering and impurity removing, enter carbonating tower and pass into COn 2 carry out carbonization, generate sodium bicarbonate, carry out centrifugal, separation at the sodium bicarbonate generated reaction, after drying, obtain sodium bicarbonate.Get wherein a small amount of sodium bicarbonate finished product, join Wyler's process and prepare in hydrazine hydrate solution, control its pH value, caustic soda soln excessive in thick hydrazine solution is neutralized.Beneficial effect of the present invention is: the Sodium carbonate decahydrate comprehensive utilization being originally used as the process of waste product low price, increased substantially the economic worth of by product.More Sodium carbonate decahydrate can be obtained follow-up freezing removing in sodium carbonate link, and improve the concentration of hydrazine hydrate in thick hydrazine, also reduce the consumption of acid in hydrazo-dicarbonamide condensation reaction. |
| priorityDate | 2013-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.