发明名称 |
Processes for the isomerization of normal butane to isobutane |
摘要 |
In a normal butane isomerization process where the isomerization effluent (108, 114) is fractionated in a deisobutanizer (116) operated such that a lower boiling fraction (118) is provided containing at least 80 mass-% isobutane and a higher boiling fraction (122) containing normal butane and at least 10 mass-% isobutane. The higher boiling fraction (122) is contacted with a selectively permeable membrane (124) to provide a permeate (126) containing normal butane-containing and a retentate (128) containing at least 80 mass-% isobutane. The preferred membranes are sieving membranes having a C4 Permeate Flow Index of at least 0.01 and a C4 Permeate Flow Ratio of at least 1.25:1.
|
申请公布号 |
US7981376(B2) |
申请公布日期 |
2011.07.19 |
申请号 |
US20090629067 |
申请日期 |
2009.12.02 |
申请人 |
UOP LLC |
发明人 |
SHECTERLE DAVID J.;SHIELDS DALE J. |
分类号 |
B01J8/02;B01J8/00;B01J10/00;B01J19/00;B01J35/02;C07C5/13;C07C7/144 |
主分类号 |
B01J8/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|