http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113563232-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8978aaf7a1d14e1024c9c15da9fb872b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C277-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C277-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C277-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C279-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C277-08 |
| filingDate | 2021-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_179349c25a9871de299f06afd80ad19b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b9d6d2d84a126f1ab782d3279cb4ffa http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1d3ed20c37a50698d39a25ccc606f6ce http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_00bb87749936216cd5563158c21a54ab http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5bfcae625b88f49f2c9edd451346ab9e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_851118e24a0b1a12c9c20fbc4e18d93b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c0823f017d6ab3c36e0c85f109a18b29 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4671f295e778afb90d555464be5af2a1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1b25bf68e1c6d841e9cbbfbe53503661 |
| publicationDate | 2021-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113563232-A |
| titleOfInvention | A kind of method of reclaiming sodium dicyandiamide from sodium dicyandiamide by-product mother liquor |
| abstract | The invention relates to the technical field of sodium dicyandiamide recovery, in particular to a method for recovering sodium dicyandiamide from a by-product mother liquor of sodium dicyandiamide, comprising the following steps: step 1, filtering the by-product mother liquor of sodium dicyandiamide, adding The pH is adjusted to 1～2 with acid to obtain the pretreated sodium dicyandiamide by-product mother liquor; in step 2, the pretreated sodium dicyandiamide by-product mother liquor is heated to 30～35 ℃ and adsorbed through a macroporous resin column Separation, when the content of sodium dicyandiamide in the effluent reaches 0.15wt%, it is deemed that the adsorption is completed; in step 3, the macroporous resin column is first eluted with sodium hydroxide solution, then rinsed with soft water, and the effluent is collected. When the pH of the effluent reaches 8, the elution is completed, and the effluent is crystallized to obtain sodium dicyandiamide. The whole process of the invention is simple to operate, the process route is short, and the sodium dicyandiamide and sodium chloride in the mother liquor can be effectively separated to obtain a high-purity sodium dicyandiamide product, which solves the problem that the by-product mother liquor of dicyandiamide is difficult to handle. The problem. |
| priorityDate | 2021-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.