http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105189418-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2523-887 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-05 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C5-48 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C5-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-05 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C11-167 |
| filingDate | 2014-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105189418-B |
| titleOfInvention | Method for the oxidative dehydrogenation of n-butenes to butadiene |
| abstract | The invention relates to a method for producing butadine from n-butenens, consisting of the following steps: A) a feed gas flow (a) containing n-butenes is provided; B) the feed gas flow (a) containing n-butenes and an oxygen-containing gas is fed to at least one dehydrogenation area and is oxidatively dehydrogenated from n-butenes to form butadiene; a product gas flow (b) containing butadiene, unreacted n-butenes, water vapour, oxygen, low-boiling hydrocarbons, optionally carbon oxides and optionally inert gases is obtained; C) the product gas flow (b) is cooled and compressed in at least compression step; at least one condensate flow (c1) containing water and a gas flow (c2) containing butadiene, n-butenes, water vapour, oxygen, low-boiling hydrocarbons, optionally carbon oxides and optionally inert gases is obtained; D) non-condensable and low-boiling gas component parts containing oxygen, low-boiling hydrocarbons, optionally carbon oxides and optionally inert gases are separated from the gas flow (c2) by Da) absorbing C4-hydrocarbons containing butadiene and n-butenes in absorption means boiling at a high temperature, wherein an absorption agent flow charged with C4-hydrocarbons and the gas flow (d2) are obtained, Db) the oxygen is removed from the absorption agent flow charged with the C4-hydrocarbon by stripping with the inert gas, and Dc) the C4 hydrocarbons are desorbed from the charged absorption agent flow and a C4 -product gas flow (d1), which consists essentially of C4-hydrocarbons and has less that 100ppm oxygen, is obtained. E) the C4-product flow (d1) is separated by extractive distillation using a selected solvent for butadiene in a butadiene and the material flow (e1) containing the selective solvent and a material flow (e2) containing n-butenes; F) the butadiene and the material flow (e1) containing the selective solvent is distilled in a material flow (f1) consisting essentially of the selective solvent and a material flow (f2) containing a butadiene. |
| priorityDate | 2013-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 87.