Title:
METHOD FOR PURIFYING PROPANE, AND PURIFICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/094281
Kind Code:
A1
Abstract:
[Problem] To provide a simple, highly energy efficient, industrially advantageous method and system for obtaining high-purity propane from low-purity propane. [Solution] At least one of water, carbon dioxide, ethane, and propylene and at least one of isobutane and n-butane in gas-phase low-purity propane are adsorbed with: a molecular sieve zeolite that adsorbs water and carbon dioxide with higher priority than propane; molecular sieve activated carbon that adsorbs ethane and propylene with higher priority than propane; and activated carbon that adsorbs isobutane and n-butane with higher priority than propane. By introducing the gas-phase low-purity propane into a dephlegmator, propane is condensed in a state where nitrogen and oxygen are kept in the gas phase. Nitrogen and oxygen in the gas phase are removed from the dephlegmator.
Inventors:
KAWAKAMI JUNICHI (JP)
TAI SHINICHI (JP)
TANAKA SAORI (JP)
TAI SHINICHI (JP)
TANAKA SAORI (JP)
Application Number:
PCT/JP2012/075646
Publication Date:
June 27, 2013
Filing Date:
October 03, 2012
Export Citation:
Assignee:
SUMITOMO SEIKA CHEMICALS (JP)
International Classes:
C07C7/12; C07C9/08
Foreign References:
| GB1375900A | 1974-11-27 | |||
| US4935580A | 1990-06-19 | |||
| JP2008513194A | 2008-05-01 |
Other References:
HERDEN, H. ET AL.: "Adsorption of hydrocarbons on activated carbons", JOURNAL OF COLLOID AND INTERFACE SCIENCE, vol. 144, no. 2, 1991, pages 477 - 482
DO, H. D. ET AL.: "Surface diffusion and adsorption of hydrocarbons in activated carbon", AICHE JOURNAL, vol. 47, no. 11, 2001, pages 2515 - 2525
HABGOOD, H. W. ET AL.: "A gas chromatographic study of the adsorptive properties of a series of activated charcoals", CANADIAN JOURNAL OF CHEMISTRY, vol. 37, 1959, pages 843 - 855
WANG, K. ET AL.: "Multicomponent adsorption, desorption and displacement kinetics of hydrocarbons on activated carbon - dual diffusion and finite kinetics model", SEPARATION AND PURIFICATION TECHNOLOGY, vol. 17, 1999, pages 131 - 146
DO, H. D. ET AL.: "Surface diffusion and adsorption of hydrocarbons in activated carbon", AICHE JOURNAL, vol. 47, no. 11, 2001, pages 2515 - 2525
HABGOOD, H. W. ET AL.: "A gas chromatographic study of the adsorptive properties of a series of activated charcoals", CANADIAN JOURNAL OF CHEMISTRY, vol. 37, 1959, pages 843 - 855
WANG, K. ET AL.: "Multicomponent adsorption, desorption and displacement kinetics of hydrocarbons on activated carbon - dual diffusion and finite kinetics model", SEPARATION AND PURIFICATION TECHNOLOGY, vol. 17, 1999, pages 131 - 146
Attorney, Agent or Firm:
NEMOTO SUSUMU (JP)
Origin 進 (JP)
Origin 進 (JP)
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Claims:
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