Title:
METHOD FOR SEPARATING AND PURIFYING ISOBUTYLENE AND METHOD FOR PRODUCING ISOBUTYLENE
Document Type and Number:
WIPO Patent Application WO/2018/047773
Kind Code:
A1
Abstract:
Provided are an industrially advantageous method for separating and purifying isobutylene and a method for producing isobutylene with which high-purity isobutylene can be efficiently obtained by a simple method. A method for separating and purifying isobutylene from reaction gas including isobutylene and unreacted isobutanol, wherein the method for separating and purifying isobutylene has a step (1) for bringing a reaction gas including isobutylene and unreacted isobutanol into contact with a first solvent to thereby obtain a first gas including the isobutylene and a recovered solution including the unreacted isobutanol, a step (2) for bringing a specific second solvent into contact with the first gas to thereby absorb the isobutylene included in the first gas into a second solvent and obtain an absorbing solution including the isobutylene, and a step (3) for distilling the absorbing solution to thereby obtain separated, purified isobutylene. A method for producing isobutylene in which the separation and purification method is used.
Inventors:
KATO SHIMPEI (JP)
TOMIKAWA DAISUKE (JP)
HOSHINO MANABU (JP)
TOMIKAWA DAISUKE (JP)
HOSHINO MANABU (JP)
Application Number:
PCT/JP2017/031815
Publication Date:
March 15, 2018
Filing Date:
September 04, 2017
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C07C1/24; C07C7/04; C07C7/11; C07C11/09; C07B61/00
Domestic Patent References:
| WO2006082965A1 | 2006-08-10 | |||
| WO2015170686A1 | 2015-11-12 |
Foreign References:
| JP2003002852A | 2003-01-08 |
Other References:
MACHO, VENDELIN ET AL.: "Dehydration of C4 alkanols conjugated with a positional and skeletal isomerisation of the formed C4 alkenes", APPLIED CATALYSIS A: GENERAL, vol. 214, no. 2, 2001, pages 251 - 257, XP004241020
TAYLOR, JOSHUA D.: "Dehydration of fermented isobutanol for the production of renewable chemicals and fuels", TOPICS IN CATALYSIS, vol. 53, no. 15-18, 2010, pages 1224 - 1230, XP019831608
TAYLOR, JOSHUA D.: "Dehydration of fermented isobutanol for the production of renewable chemicals and fuels", TOPICS IN CATALYSIS, vol. 53, no. 15-18, 2010, pages 1224 - 1230, XP019831608
Attorney, Agent or Firm:
MIYAZAKI Teruo et al. (JP)
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