Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By c content reduction – e.g. – cracking – etc.
Patent
1992-07-22
1993-09-14
McFarlane, Anthony
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By c content reduction, e.g., cracking, etc.
585826, 585829, 95100, 95144, C07C 712
Patent
active
052450996
ABSTRACT:
A process is provided for the concentration and recovery of ethylene and heavier components from a hydrocarbon feedstream. A pressure swing adsorption (PSA) process is used to remove from hydrocarbon feedstream light cut comprising hydrogen, carbon monoxide, and methane and subsequently concentrate a heavy cut comprising the ethylene and heavy components in the PSA tail gas. In one aspect of the invention, an FCC off gas is separated into a light cut and a heavy cut and the heavy cut is routed to an ethylene plant. In another aspect of the invention, a C.sub.2 -rich stream is withdrawn from an ethylene plant and used to enhance the recovery of the ethylene and heavier stream in the PSA process and an ethylene-rich stream is returned to the ethylene plant.
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Better Ethylene Separation Unit, by V. Kaiser and M. Picciotti, Hydrocarbon Processing Magazine, Nov., 1988, pp. 57-61.
McBride Thomas K.
McFarlane Anthony
Silverman Richard P.
Tolomei John G.
UOP
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