http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2017233313-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/C07C2523-887 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C11-167 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C5-48 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 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C5-48 |
| filingDate | 2015-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76678b0cb6d05c525b67bf47c668e941 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c9b78c36ebf6d0788ec05ffef61257e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ed08c1e883abdca2010b07c7d463a3df http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fd4f7f36c95b75db8061e75ccb78f6d7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7b5f2cf767a178a72431da59b59b35e4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a5766775fbb0610064b8bfbbd0a2526 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fd428fe8555d8653ac9695f888d93624 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c132ff86f8762269440794bd09a5b09d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6e07eb155a5a91d1d8d805711c5f0681 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e721456925afe92206c7c10fa444aebd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_087dc356b4cf239e927bea8e7a3a48c8 |
| publicationDate | 2017-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2017233313-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:n 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 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 of an organic solvent, wherein the organic solvent is selected from the group consisting of toluene, o-, m- and p-xylene, mesitylene, mono-, di- and triethylbenzene, mono-, di- and triisopropylbenzene and mixtures thereof, and the mass ratio of the aqueous phase to the organic phase in the cooling medium when it is fed into the cooling zones prior to the contacting with the product gas stream being from 0.015:1 to 10:1, 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 c 1 and one gas stream c 2 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 d 2 from the gas stream c 2 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 d 2 , and then desorbing the C 4 hydrocarbons from the laden absorbent stream, giving a C 4 product gas stream d 1, E) separating the C 4 product stream d 1 by extractive distillation with a butadiene-selective solvent into a stream e 1 comprising butadiene and the selective solvent and a stream e 2 comprising n-butenes; F) distilling the stream e 1 comprising butadiene and the selective solvent into a stream f 1 consisting essentially of the selective solvent and a stream f 2 comprising butadiene. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10358399-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10421700-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10307741-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10710054-B2 |
| priorityDate | 2014-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 165.