http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110746324-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c161e45764189210f986b74de8ae3c41 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-141 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C273-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C273-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C273-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C273-04 |
| filingDate | 2019-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cbb17a0fae5c31bc63928cdc9300b008 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_63a39be55ee0c8952ba7fe33a9ae4e24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5788c2f3980987fd84c9cd418f95d911 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fa662065e7d722f0242bbc9b512f973e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f1c1dc6cc85d99a383c37441231c75be |
| publicationDate | 2020-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110746324-A |
| titleOfInvention | A low-temperature, high-efficiency, energy-saving low-pressure decomposition process for urea production |
| abstract | The invention relates to the further utilization field of desorption and hydrolysis gas phase and desorption of purified water heat in the low-pressure decomposition of urea in the urea production process, in particular to a low-temperature, high-efficiency, energy-saving and low-pressure decomposition process for urea production. The process includes five process steps: heat exchange of the upper stage packing, low-pressure decomposition and heating, desorption and hydrolysis gas heat exchange, carbon dioxide stripping of the lower stage packing, and separation. In this application, the reaction mixture is heated to 130°C to 135°C in a low-pressure decomposition heater, most of the ammonium carbamate in the solution is decomposed into NH 3 and CO 2 , and free ammonia is evaporated; the gas obtained by heating and decomposing the low-pressure decomposition heater After the liquid mixture is stripped with carbon dioxide, the remaining ammonium carbamate in the solution is decomposed into NH 3 and CO 2 , free ammonia is stripped out by gas, and the NH 3 content in the solution exiting the low-pressure decomposition tower is less than 0.6wt%. The urea low-pressure decomposition process equipment of the invention has low investment, high ammonium carbamate decomposition rate and total ammonia distillation rate, and low steam consumption. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114409573-A |
| priorityDate | 2019-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.