http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2000178023-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b70f21b272a91a9a9f6f774bc765e7b2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3c22c3f161bff7a0def03f9f767ef989 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05C13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01C1-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C05G3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F1-04 |
| filingDate | 1998-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7525a353cb2508846669d6a5090d54a6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd805f64906fb84a158b6517ee9a8f2a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_749b750a8878699b55f32827ded1fb5f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e74f75f052dc1d23eb7e00a5815b6372 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_35e39a12850e3bea7896f5949483eccf |
| publicationDate | 2000-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2000178023-A |
| titleOfInvention | Nitrogen-containing mixed salt from nitric acid and ammonia containing liquid and its recovery method |
| abstract | PROBLEM TO BE SOLVED: To simultaneously treat and remove nitric acid and ammonia in wastewater by an inexpensive method, to crystallize nitric acid and ammonia without decomposing them, and to improve the hygroscopicity of crystals. To be reused as nitrogen fertilizer. SOLUTION: The pH of the waste water adjusted to pH 4 to 7 with sulfuric acid. An adjustment step, a preconcentration step of evaporating and concentrating the adjusted wastewater to such an extent that it does not crystallize, a nitrogen grade stabilization step of suppressing the composition fluctuation of the concentrated wastewater by a cushion tank, etc., and a crystallization step of evaporating and concentrating the stable wastewater. A crystal recovery step of recovering a mixed salt crystal from the mixed concentrated liquid by filtration, preferably, Further, a nitrogen-containing mixed salt is recovered by a method comprising a step of adding a surface treating agent such as a surfactant to the recovered mixed salt crystal to improve the hygroscopicity. Then, a nitrogen-containing mixed salt crystal having a water content of 10% by weight or less, an average particle diameter of 100 μm or more, and good handleability and low hygroscopicity recovered by this method is used as a nitrogen fertilizer. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101974197-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2010120815-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008207118-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20180131288-A |
| priorityDate | 1998-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.