http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2071943-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3eb6230a4d81fe6d2c1846b353ddcc4d |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B17-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B17-69 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-26 |
| filingDate | 1992-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1997-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f23f9dc7867aee91e390e2796e6fd811 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_69b9242c3a05b97a2a8b646e214abcf8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bf56bce6f1b924d49eeb536b81292569 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3116437362a2c7c0c38b40876807117f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_847f35a9e1a922ee04fd9dc1fb679b12 |
| publicationDate | 1997-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2071943-C1 |
| titleOfInvention | Method for recovery of worked out sulfuric acid in trotyl production |
| abstract | FIELD: chemical engineering. SUBSTANCE: into initial 65-68% worked out sulfuric acid combined with mononitrotoluene at ratio 3:1 entering dilution apparatus, worked out saline containing 0.22-0.26 wt % of dissolved and 1.4-1.5 wt % of suspended nitro- bodies is introduced at acid to saline ratio 15:1. In apparatus, extraction of nitro-compounds with mononitrotoluene occurs followed by return of nitro-compounds back into the basic production. Acid with reduced nitro-body content is directed into recovery process. Acid is concentrated in concentration apparatus with furnace gases. Preliminarily, worked out sulfuric acid is freed from nitrogen oxides upon heating with steam in denitration column. Withdrawn furnace gases contain, along with steam, acid components (sulfuric acid, nitric acid, sulfur dioxide, and nitrogen oxides), which are trapped by ammonium hydroxide in ejection absorber. Salt solution produced in the last stage and containing 20-40% ammonium salts is fed into dilution apparatus. EFFECT: improved operational safety and eliminated sulfuric acid waste. 1 dwg, 1 tbl |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2500614-C1 |
| priorityDate | 1992-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.