Method for removal of acetylenes from hydrocarbon streams

Details Method for removal of acetylenes from hydrocarbon streams Method for removal of acetylenes from hydrocarbon streams

2008-07-01

2008-07-01

Dang, Thuan D. (Department: 1797)

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By plural serial diverse separations

C585S254000, C585S264000, C585S256000, C585S654000

Reexamination Certificate

active

11557849

ABSTRACT:
The process of the invention comprises contacting a hydrocarbon stream, comprising light olefins plus impurities such as acetylenes, in the absence of hydrogen with a supported copper catalyst, preferably CuO/alumina. The acetylene component undergoes a coupling reaction producing a diacetylene which can be more readily removed. Thus, the methylacetylene (MA) contaminant in liquid propylene yields at about 80° C. and 3792 kPa (550 psig) a significant amount dimethyl diacetylene (2,4-hexadiyne). Surprisingly, very little cyclization products are present. The process is useful for purification of olefin feeds. It can be used alone or in combination with known purification methods such as catalytic distillation or selective hydrogenation.

REFERENCES:
patent: 3755488 (1973-08-01), Johnson et al.
patent: 3792981 (1974-02-01), Hettick et al.
patent: 3812057 (1974-05-01), Morgan et al.
patent: 3912789 (1975-10-01), Frevel et al.
patent: 4082694 (1978-04-01), Wennerberg et al.
patent: 4425255 (1984-01-01), Toyoda et al.
patent: 4440956 (1984-04-01), Couvillion
patent: 5332705 (1994-07-01), Huang et al.
patent: 6124517 (2000-09-01), Kaminsky et al.
patent: 61050929 (1986-03-01), None

Affiliated with

Also associated with

Rating

Method for removal of acetylenes from hydrocarbon streams 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 for removal of acetylenes from hydrocarbon streams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for removal of acetylenes from hydrocarbon streams will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3940064