http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111408157-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2009-0086 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D9-0031 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01C1-242 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D9-0059 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D9-0077 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01C1-242 |
| filingDate | 2020-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-09-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111408157-B |
| titleOfInvention | Ammonium sulfate crystallization method and device thereof |
| abstract | The invention discloses an ammonium sulfate crystallization method and an ammonium sulfate crystallization device, and belongs to the field of chemical industry. The device uses two crystallizers connected in series, and adopts a double-effect vacuum crystallization process, wherein the first effect is neutralization crystallization, and the second effect is evaporation crystallization. The first effect is to neutralize the slurry produced by crystallization and containing fine crystal particles in large proportion, and the second effect is to send the slurry to an evaporative crystallization system to obtain ammonium sulfate with large proportion of large particles of ammonium sulfate. The device makes full use of the heat of solution of gas ammonia and the heat of neutralization of the neutralization reaction of sulfuric acid and ammonia, and utilizes the secondary steam of the neutralization crystallizer as a heat source, thereby reducing the consumption of circulating water, improving the proportion of large-particle ammonium sulfate and reducing the wrapping loss of caprolactam. |
| priorityDate | 2020-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.