Method of separating olefins from mixtures with paraffins

Details Method of separating olefins from mixtures with paraffins Method of separating olefins from mixtures with paraffins

2007-07-31

2007-07-31

Nguyen, Tam M. (Department: 1764)

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By membrane, selective septum, or coalescer

C585S809000

Reexamination Certificate

active

10353210

ABSTRACT:
A process for the separation or concentration of olefinic hydrocarbons from mixtures of olefinic and paraffinic hydrocarbons uses a polyimide membrane. The process is well suited to separating propylene from propylene/propane mixtures. The novel method The membrane exhibits good resistance to plasticization by hydrocarbon components in the gas mixture under practical industrial process conditions.

REFERENCES:
patent: 4080744 (1978-03-01), Manos
patent: 4120098 (1978-10-01), Manos
patent: 4230463 (1980-10-01), Henis et al.
patent: 4532041 (1985-07-01), Shuey et al.
patent: 4571444 (1986-02-01), Black et al.
patent: 4606903 (1986-08-01), Hafez et al.
patent: 4836927 (1989-06-01), Wan
patent: 5015270 (1991-05-01), Ekiner et al.
patent: 5034024 (1991-07-01), Hayes
patent: 5133867 (1992-07-01), LaFreniere
patent: 5605627 (1997-02-01), Carlsen et al.
patent: 5683584 (1997-11-01), Wenthold et al.
patent: 5762798 (1998-06-01), Wenthold et al.
patent: 6180008 (2001-01-01), White
patent: 6187987 (2001-02-01), Chin et al.
patent: 2002/0153315 (2002-10-01), Koros et al.
J.J. Krol, M. Boerrigter, G.H. Koops, Polyimide hollow fiber gas separation membranes: preparation and the suppression of plasticization in propane/propylene environments, J. Membrane Science. 184 (2001) 275-286.
C. Staudt-Bickel et al, Olefin/paraffin gas separations with 6FDA-based polyimide membranes, J. Membrane Science 170 (2000) 205-214.
Kwang-Rae Lee and Sun-Tak Hwang, Separation of propylene and propane by polyimide hollow-fiber membrane module, J. Membrane Science 73 (1992) 37-45.
International Search Report for PCT/IB 03/04966.
J. Hayashi, et al.: “Separation of ethane/ethylene and propane/propylene systems with a carbonized BPDA-pp 'ODA polyimide membrane”, Industrial & Engineering Chemistry Research; vol. 35, No. 11—1996, pp. 4176-4181, XP 002278537; American Chemical Society, Washington.
K. Tanaka, et al.: “Permeation and separation properties of polyimide membranes to olefins and paraffins”, Journal of Membrane Science, Elsevier Scientific Publishing Company, Amsterdam, NL; vol. 121, No. 2, Dec. 11, 1996, pp. 197-207, XP004071258.

Affiliated with

Also associated with

Rating

Method of separating olefins from mixtures with paraffins does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of separating olefins from mixtures with paraffins, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of separating olefins from mixtures with paraffins will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3748903