http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107986249-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-80 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-40 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B21-40 |
| filingDate | 2017-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107986249-B |
| titleOfInvention | Method for removing nitrotoluene from dilute nitric acid after nitrotoluene waste acid denitration |
| abstract | The invention relates to the technical field of nitrotoluene production, in particular to a method for removing nitrotoluene by dilute nitric acid after nitrotoluene waste acid denitration, which comprises the steps of cooling, concentration improvement, separation, transfer, gas-liquid secondary absorption and the like, in the gas-liquid secondary absorption, firstly, a nitrogen oxide compressor unit is compressed to carry out gas primary absorption, the rest nitrogen oxide gas is conveyed to a nitrogen oxide absorption tower to carry out gas secondary absorption, absorption liquid in the nitrogen oxide absorption tower absorbs the nitrogen oxide to be liquid primary absorption, the absorption liquid and nitric acid in a collecting tank are conveyed to the nitrogen oxide compressor unit, the nitric acid absorbs the nitrogen oxide gas in the nitrogen oxide compressor unit to be liquid secondary absorption, the obtained nitric acid with the concentration of 50 percent is conveyed to the previous step to improve the concentration of dilute nitric acid, thereby adjusting the concentration of the nitric acid in the separator to make the density of the nitric acid and the nitrotoluene different, and separating the nitrotoluene. |
| priorityDate | 2017-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.