| Predicate |
Object |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G2400-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G2300-1081
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G2300-4025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G2300-1088
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G2300-1037
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C9-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C11-08 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G63-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-143
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G70-041
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-146
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C10G7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-005 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C11-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C9-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C9-12 |
| filingDate |
2018-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2020-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2020524155-A |
| titleOfInvention |
Method for purifying raffinate-2 |
| abstract |
The present invention relates to a method for separating and purifying 1-butene from a raffinate-2 stream with high purity and high yield, wherein raffinate-2 containing n-butane, isobutane and 1-butene is supplied to a first distillation column. To obtain heavy raffinate-3 containing n-butane from the lower part of the first distillation column and recover an upper partial fraction containing 1-butene from the upper part; Feeding to the second distillation column to recover the first lower fraction fraction rich in 1-butene from the lower part of the second column and recovering the light raffinate-3 containing isobutane from the upper part, the first distillation column The heat contained in the upper partial fraction recovered from the upper part of the column is supplied to the lower part of the second distillation column via the first heat exchanger, and the energy recovery amount is maximized by the double effect distillation. Provided is a method capable of recovering butene with high purity and high yield. |
| priorityDate |
2017-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |