Title:
ISOLATION AND RECOVERY METHOD AND ISOLATION AND RECOVERY DEVICE FOR ISOPRENE
Document Type and Number:
WIPO Patent Application WO/2018/143041
Kind Code:
A1
Abstract:
Provided is an isolation and recovery method for isoprene. The method makes it possible to reduce the amount of polymers of isoprene generated when isoprene is isolated and recovered from a mixed fluid that includes isoprene. According to this isolation and recovery method for isoprene, isoprene is isolated and recovered from a mixed fluid that includes isoprene. The method includes: an extraction distillation step for extraction distilling the mixed fluid to obtain a fraction that includes impurities that are less soluble than isoprene in the extraction solvent used in the extraction distillation and a fraction that includes crude isoprene; and a fractional distillation step for fractionally distilling the fraction that includes the crude isoprene to obtain a fraction that includes impurities that have a higher boiling point than isoprene, a fraction that includes impurities that have a lower boiling point than isoprene, and a fraction that includes high-purity isoprene.
Inventors:
KANAUCHI MASANOBU (JP)
FUTAMURA SEIJI (JP)
OTSUBO KENICHI (JP)
FUTAMURA SEIJI (JP)
OTSUBO KENICHI (JP)
Application Number:
PCT/JP2018/002236
Publication Date:
August 09, 2018
Filing Date:
January 25, 2018
Export Citation:
Assignee:
ZEON CORP (JP)
International Classes:
B01D3/14; C07C7/04; B01D3/40; C07C7/08; C07C11/18
Foreign References:
| JP2002053871A | 2002-02-19 | |||
| JPS4741323A | ||||
| JP2008515953A | 2008-05-15 | |||
| JP2016524522A | 2016-08-18 | |||
| JP2003103106A | 2003-04-08 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
Download PDF:
Previous Patent: FLOW DIVIDING VALVE
Next Patent: ISOLATION AND RECOVERY METHOD AND ISOLATION AND RECOVERY DEVICE FOR 1,3-BUTADIENE
Next Patent: ISOLATION AND RECOVERY METHOD AND ISOLATION AND RECOVERY DEVICE FOR 1,3-BUTADIENE