http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2321577-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b5384dc68d5cc79ec68b3a65447d3a2a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-127 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-19 |
| filingDate | 2006-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2008-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b0f98b02f605beb12595e5e9a15e4fae http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2879fff535d883afa028d342665af120 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d81fb0fa996eeb84e06ae32e64b6fb54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b9c19e222e67b1fd127d53adabc8d71 |
| publicationDate | 2008-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2321577-C2 |
| titleOfInvention | Method for preparing glyoxal-containing products |
| abstract | FIELD: chemical technology. n SUBSTANCE: invention relates to a method for continuous synthesis of glyoxal-containing products of the desired concentration in a single-step technological cycle. Method involves vapor-phase catalytic process of partial oxidative dehydrogenation of ethylene glycol with oxygen diluted with steam and nitrogen in the mole ratio from 1/6.5 to 1/13.0 at temperature 400-700°C on carrier Ag-contacts and massive Ag-catalysts made of materials of electrolytic origin of particles size 0.1-4.0 mm. Then the process involves continuous the vat-less separation of vapor-gaseous oxidate for liquid fractions and gaseous phase wherein prepared aqueous aldehyde solutions contain 4-40% of glyoxal, 6.2% of glycolic aldehyde, not above, 4.6% of formaldehyde, not above, 4.0% of ethylene glycol, not above, at the total acidity index 2%. The end product comprises 39.8% of glyoxal, 5.5% of glycolic aldehyde and 0.4% of formaldehyde. The process of continuous the vat-less separation of synthesis products for glyoxal-containing liquid fractions and depleted gaseous phase is carried out continuously in the range of temperature 10-400°C as result of subcontact cooling in combination with three-step combined condensation of components of vapor-gaseous oxidate in a cascade block-unit in fractional isolation of liquid and gaseous products of synthesis, and in regulation of heat regimen of the combined condensation and change of the ratio of liquid fractions. n EFFECT: improved method of synthesis. n 1 dwg, 13 ex |
| priorityDate | 2006-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.