http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113511983-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_008c9107ff464e201e724ad32b7630cc |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C241-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C243-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C241-02 |
| filingDate | 2020-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab911329ca1c7f11641af912df8ef4dd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb48cf77093d20d2c5337e3480689623 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c8cedc03cd50678358dae11066172497 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2169a839d9d2484785e4d0a3a9dba41c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5ce4208611ea3ae603015fc134e8180f |
| publicationDate | 2021-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113511983-A |
| titleOfInvention | A kind of purification method of hydroxyethyl hydrazine nitrate crude product |
| abstract | The invention discloses a method for purifying a product in the process of synthesizing hydroxyethylhydrazine nitrate in a microreactor. The method involves extraction, cooling separation and evaporation operations, and specifically includes: at room temperature, synthesizing hydroxyethylhydrazine in a microreactor The hydroxyethyl hydrazine nitrate crude product synthesized by reacting with nitric acid is pre-evaporated and dehydrated or directly mixed with absolute ethanol, and the nitric acid therein is extracted with absolute ethanol to form a mixed system, and the mixed system is cooled, separated and settled to form an extraction phase and a raffinate The raffinate phase is separated at low temperature; under vacuum conditions, the raffinate phase is evaporated at 30°C to 70°C to remove the water and ethanol therein to obtain the main product. The evaporation temperature of the invention is increased from 30°C to 50-70°C, and the evaporation time is greatly shortened; after purification, the concentration of the main product in the hydroxyethylhydrazine nitrate product is increased to more than 97.5%, and the concentration of nitric acid is reduced from 0.6% to 1.5%. 0.2%～0.3%; product loss rate is less than 3.5%; product color is lighter or colorless; extraction agent absolute ethanol has a low boiling point, and there is no residue in the product. |
| priorityDate | 2020-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.