http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114262110-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be1f709e2fbbfedbb755d757721771d6 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01D5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F9-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-76 |
| filingDate | 2021-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eb227583a27c16349f12dc119dee2c9b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d68a296f903f959b921008c78a8f786d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2e2b2204489acb186ea4ee6e990a0839 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e0f0caaf00ec1a553498aea0d0f085cc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3a3922d783a5210aa874111bc6d0f7bf |
| publicationDate | 2022-04-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114262110-A |
| titleOfInvention | Integrated synergistic recovery method of sodium sulfate and methanol from methyl pyrimidin-phosphine production wastewater |
| abstract | The invention discloses an integrated synergistic recovery method of sodium sulfate and methanol in methyl pyrimidine production wastewater. The method comprises the following steps: cooling the sodium sulfate wastewater to ‑5 to 10°C for crystallization, and cooling the sodium sulfate wastewater to ‑5 to 10°C for crystallization, and at a temperature of ≤20°C Carry out solid-liquid separation, the obtained sodium sulfate decahydrate is heated, distilled and concentrated, and centrifuged, the obtained anhydrous sodium sulfate crude product is rinsed with sodium sulfate solution, centrifuged, and dried to obtain sodium sulfate solid, which also includes using sodium sulfate solid to water-containing. Methanol was purified to obtain anhydrous methanol. The integrated synergistic recovery method of sodium sulfate and methanol in the waste water of methyl pyrimidine production of the present invention, through the combined treatment of cooling crystallization, low-temperature filtration, distillation concentration, and leaching filtration, can realize zero discharge of waste water, improve the environment, and save energy. It can reduce consumption, and can synergistically recover by-products (sodium sulfate, methanol, xylene, water), which is conducive to improving the economic benefits of enterprises. |
| priorityDate | 2021-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.