Process to produce a dilute ethylene stream and a dilute propylene stream

   
   

Processes are provided to produce a dilute ethylene stream and a dilute propylene stream from a cracked gas stream. One process comprises separating the cracked gas stream to produce a C.sub.3.sup.- stream and a C.sub.3.sup.+ stream; hydrogenating the C.sub.2.sup.- stream in a hydrogenation zone to remove a portion of the acetylene to produce the dilute ethylene stream and routing the C.sub.3.sup.+ stream to storage or other process unit. Another process comprises separating a cracked gas stream in a depropanizer zone to form a C.sub.3.sup.- stream and a C.sub.4.sup.+ stream; separating the C.sub.3.sup.- stream in a deethanizer zone to form a C.sub.2.sup.- and a C.sub.3 stream; hydrogenating a portion of the acetylene in the C.sub.2.sup.- stream in a hydrogenation zone to produce a dilute ethylene stream; and routing the C.sub.3 stream to storage or other process unit.

 
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