US Patent:
20210403398, Dec 30, 2021
Inventors:
- Bloomfield NJ, US
Liang Chen - Bloomfield NJ, US
Michael Jon Scott - Houston TX, US
Assignee:
LUMMUS TECHNOLOGY LLC - Bloomfield NJ
International Classification:
C07C 7/177
C07C 2/08
C07C 5/03
B01J 8/04
B01D 3/00
B01D 3/14
Abstract:
The selective dimerization of isoolefins, such as isobutene or isopentane, or mixtures thereof, may be conducted in a system including a series of fixed bed reactors and a catalytic distillation reactor. The system may provide for conveyance of the fixed bed reactor effluents, without componential separation, to a downstream reactor. It has been found that a high selectivity to the dimer may be achieved even though intermediate separation of the desired product from unreacted components between reactors is not performed. Further, embodiments provide for use of a divided wall column for recovery of a high purity dimer product, reducing unit piece count and plot size.