Catalytic cracking process

Details Catalytic cracking process Catalytic cracking process

C - Chemistry, Metallurgy

07

C

C07C 11/02 (2006.01) B01D 53/04 (2006.01) C07C 7/12 (2006.01) C10G 70/04 (2006.01)

Patent

CA 2134821

A hydrocarbon stream is cracked to produce a hot gaseous stream which is compressed and cooled to condense almost all of the hydrocarbons contained in the stream. A noncondensed stream remaining after the condensation step, comprised predominantly of hydrogen and C1 to C3 hydrocarbons, is subjected to pressure swing adsorption or temperature swing adsorption at an adsorption temperature of about 0 to about 250° C in a bed of adsorbent which selectively adsorbs ethylene and propylene, thereby adsorbing substantially all of the ethylene and propylene from the gas stream. The ethylene and/or propylene is recovered upon bed regeneration.

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