http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5543128-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fab82a381f9d0ff8a604cb09e446c878 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05B13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C05B17-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B25-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05B13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05B17-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B25-14 |
| filingDate | 1994-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1996-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_831cc46ba417d9dc4d51b0cfda3dcab5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8d18ea38fa1f7833a67b417bece39bb3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dff89d9e208772f243497aeeb22d848c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bcd35d4960a355d8475a8791ed01497a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e3bee9438c5b5739de6c5f603abc7b48 |
| publicationDate | 1996-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5543128-A |
| titleOfInvention | Regeneration method for process waste containing sulfur and phosphorus |
| abstract | A method for treatment of process waste obtained from the synthesis of thiophene or its derivatives, which method produces phosphorus pentasulfide of sufficiently high purity for recycling in said synthesis process, as well as a residue material suited for use as a raw material for fertilizers. In the treatment method, the process waste is subjected to vacuum evaporation in a combination heating/evaporation reactor at 500 DEG -700 DEG C. and under a partial vacuum of 0.01-0.2 atm. To improve the yield of the evaporating phosphorus pentasulfide, sulfur is added to the process waste. The evaporating phosphorus pentasulfide is condensed, and when desired, pulverized. The usable, phosphorus- and potassium-containing evaporation residue is removed from the reactor and cooled for further use. |
| priorityDate | 1992-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.