| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_64deb03bc139f1960b3fde0a6496526e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2208-00176 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C5-2506
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C11-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-4227
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J8-001
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-009 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C5-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-00 |
| filingDate |
2019-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_747a84b9382443302e706ce2a691df64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8121fe46644200dc1fd0c3767f6e8d43 |
| publicationDate |
2021-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-11053177-B2 |
| titleOfInvention |
Process for the production of high purity isobutylene |
| abstract |
Processes for the production of high purity isobutylene are disclosed. The processes may include supplying a mixed C4 feed stream to a catalytic distillation column, which may contain a butene isomerization catalyst. 1-butene is isomerized to 2-butene and concurrently in the catalytic distillation column the 2-butene is separated from the isobutane and isobutylene. The overheads fraction comprising the isobutane and isobutylene is then condensed in an overheads system and fed to a splitter, where the isobutane is separated from the isobutylene. The process further includes operating the catalytic distillation column at an overheads temperature greater than a bottoms temperature of the splitter, and heating a portion of the splitter bottoms stream via indirect heat exchange with at least a portion of the catalytic distillation column overheads fraction, thereby producing a heated bottoms stream (reboil vapor) fed to the splitter and a cooled overheads fraction. |
| priorityDate |
2018-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |