http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113750747-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9b7b0050b8d8ec1a2c6db94a0ccc3206 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-504 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D2257-406 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1493 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1425 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D53-1418 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01C1-022 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01C1-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01C1-024 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01C1-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-62 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D53-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01C1-12 |
| filingDate | 2021-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_86cd90bc23e2d716f883ac80a2d5c9a6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1e770420735bf65e1f1607392d62bfca http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_66db649a3be60e27ff84b2db925e95a2 |
| publicationDate | 2021-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113750747-A |
| titleOfInvention | Process for separating and concentrating ammonia gas as by-product of condensation of alkaline ADC foaming agent |
| abstract | A separation and concentration process of ammonia gas as a byproduct of condensation of an alkaline ADC foaming agent adopts a separation and concentration device to perform the following steps: 1) cooling the mixed vapor phase discharged from the biurea reactor to 60-80 ℃ by a condenser, condensing hydrazine hydrate in the mixed vapor phase, and refluxing the condensed hydrazine hydrate to the reaction kettle; 2) mixed gas after hydrazine hydrate separation enters a shell pass of a heat exchanger from the lower part of the shell pass of the heat exchanger, sodium hydroxide solution is sprayed on the top of the shell pass of the heat exchanger through a distributor and is in countercurrent contact with a mixed gas phase of hydrazine hydrate separation to obtain washing liquid, and the washing liquid enters a storage tank; 3) washing gas discharged from the upper part of the shell pass of the heat exchanger enters the ammonia absorption tower through a second pipeline, and washing liquid in the storage tank enters the ammonia absorption tower through a third pipeline; 4) and the tower bottom liquid of the ammonia absorption tower enters an ammonia regeneration tower through a fourth pipeline, after the tower bottom liquid is heated by a reboiler, ammonia in the tower bottom liquid is discharged in a vapor phase form, and ammonia water is obtained through recovery and concentration. The invention can recover pure ammonia, which can be used as raw material. |
| priorityDate | 2021-09-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.