http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3215478-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_10636948adeff7a4f9c77a5c45be2245 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2523-843 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2523-31 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2523-847 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-11 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/C07C5-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C11-167 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-04 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/C07C11-167 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C5-48 |
| filingDate | 2015-11-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c9b78c36ebf6d0788ec05ffef61257e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_28173a6cc9261ab8114437129a9d8917 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e07eb155a5a91d1d8d805711c5f0681 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7b5f2cf767a178a72431da59b59b35e4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_21cad4aaade1d9baeb28ab5b161ec4e8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e721456925afe92206c7c10fa444aebd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fd428fe8555d8653ac9695f888d93624 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a5766775fbb0610064b8bfbbd0a2526 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76678b0cb6d05c525b67bf47c668e941 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0808977ec40ad3c31c30b4bb4aa0ff9e |
| publicationDate | 2017-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-3215478-A1 |
| titleOfInvention | Process for preparing 1,3-butadiene from n-butenes by oxidative dehydrogenation |
| abstract | The invention relates to a process for preparing butadiene from n-butenes, comprising the steps of: A) providing an input gas stream a comprising n-butenes; B) feeding the input gas stream a comprising n-butenes and a gas containing at least oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, giving a product gas stream b comprising butadiene, unconverted n-butenes, water vapor, oxygen, low-boiling hydrocarbons and high-boiling secondary components, with or without carbon oxides and with or without inert gases; Ca) cooling the product gas stream b by contacting with a circulating cooling medium in at least one cooling zone, the cooling medium being at least partly recycled and having an aqueous phase and an organic phase comprising an organic solvent; Cb) compressing the cooled product gas stream b which may have been depleted of high-boiling secondary components in at least one compression stage, giving at least one aqueous condensate stream c1 and one gas stream c2 comprising butadiene, n-butenes, water vapor, oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases;D) removing uncondensable and low-boiling gas constituents comprising oxygen and low-boiling hydrocarbons, with or without carbon oxides and with or without inert gases, as gas stream d2 from the gas stream c2 by absorbing the C 4 hydrocarbons comprising butadiene and n-butenes in an absorbent, giving an absorbent stream laden with C 4 hydrocarbons and the gas stream d2, and then desorbing the C 4 hydrocarbons from the laden absorbent stream, giving a C 4 product gas stream d1; E) separating the C 4 product stream d1 by extractive distillation with a butadiene- selective solvent into a stream e1 comprising butadiene and the selective solvent and a stream e2 comprising n-butenes; F) distilling the stream e1 comprising butadiene and the selective solvent into a stream f1 consisting essentially of the selective solvent and a stream f2 comprising butadiene; which comprises G) removing a portion of the aqueous phase of the cooling medium which circulates in step Ca) and has an aqueous phase and an organic phase as aqueous purge stream g; H) distillatively separating the aqueous purge stream g into a fraction h1 enriched in organic constituents and a fraction h2 depleted of organic constituents. |
| priorityDate | 2014-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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