http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112279777-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_74da19740def035cad82b68c0dca3af7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_215fd62f148bc5aab2bfc8e46ecd6126 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-03 |
| filingDate | 2020-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2af3a268e66d6142ebcc19da4825195e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4da4b0c0e1691060c36248f8007c8c4a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac67a3d601cc226825623156e0bff388 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_39f5767656bc49ff07abb351f69aedde http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bfc99435ba702b571e4bef8ad773a7d0 |
| publicationDate | 2021-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112279777-A |
| titleOfInvention | Comprehensive treatment method and device for 2 alpha-methyl-2 beta-azido methyl penam-3 alpha-carboxyl diphenylmethyl ester mother liquor |
| abstract | The invention belongs to the field of medicines, and particularly relates to a comprehensive treatment method and a comprehensive treatment device for 2 alpha-methyl-2 beta-azido methyl penam-3 alpha-carboxyl diphenylmethyl ester mother liquor. The method comprises the following steps: 1) transferring the mother liquor to an adjusting kettle, and adjusting the pH value by using liquid caustic soda; 2) dropwise adding a sodium hypochlorite solution into the mother liquor until the sodium azide completely reacts; 3) transferring the mother liquor to a high-efficiency evaporator by using a pump, evaporating out a gas phase, feeding the gas phase into an ethyl acetate rectifying tower, feeding the residual salt-containing DMF solution into a cooling kettle, cooling and crystallizing, centrifugally desalting by using a centrifugal machine, heating the filtrate by using a reboiler, feeding the gas phase at the top of the cooling kettle into a dehydration tower through a vacuum pump, and feeding the gas phase into an ethyl acetate rectifying tower after entering a two-stage condenser A; 4) the gas phase evaporated from the top of the dehydrating tower enters a waste water tank after passing through a three-stage condenser; the materials at the bottom of the dehydration tower are heated by a reboiler, enter a DMF (dimethyl formamide) rectifying tower, pass through a two-stage condenser B, and enter a finished product tank after being sampled and detected to be qualified. The invention solves the potential safety hazard in actual production and reduces the production cost. |
| priorityDate | 2020-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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