Deoiling of cracking furnace effluent

Claim 1

A PROCESS FOR SEPARATING INTO DIFFERENT HYDROCARBON FRACTIONS FIRST AND SECOND GAS STREAMS OF DIFFERENT COMPOSITIONS AND EACH CONTAINING SUBSTANTIAL PROPORTIONS OF C1 AND C2 AND HEAVIER HYDROCARBONS WHICH COMPRISES THE STEPS OF: (1) ABSORBING HEAVIER HYDROCARBONS FROM SAID FIRST STREAM IN AN ABSORBENT IN A FIRST ABSORPTION ZONE WHILE LEAVING SUBSTANTIALLY ALL OF THE C1 AND C2 HYDROCARBONS UNABSORBED; (2) PASSING SAID C1 AND C2 HYDROCARBONS OVERHEAD AS A FIRST OVERHEAD FRACTION WHILE RECOVERING RICH ABSORBENT CONTAINING HEAVIER HYDROCARBONS AS A FIRST BOTTOMS FRACTION; (3) ABSORBING HEAVIER HYDROCARBONS FROM SAID FIRST BOTTOMS FRACTION AND FROM SAID SECOND STREAM IN AN ABSORBENT IN A SECOND ABSORPTION ZONE AS A SECOND BOTTOMS FRACTION WHILE LEAVING SUBSTANTIALLY ALL OF THE C1 AND C2 HYDROCARBONS IN SAID SECOND STREAM UNABSORBED; (4) PASSING THE C1 AND C2 HYDROCARBONS OF STEP (3) OVERHEAD AS A SECOND OVERHEAD FRACTION; (5) SEPARATING SAID HEAVIER HYDROCARBONS FROM SAID SECOND BOTTOMS FRACTION TO SEPARATELY RECOVER LEAN ABSORBENT AND HEAVIER HYDROCARBONS; (6) PASSING LEAN ABSORBENT FROM STEP (5) TO STEPS (1) AND (3) AS SAID ABSORBENT; AND (7) RECOVERING AS PRODUCTS THE FIRST AND SECOND OVERHEAD FRACTIONS OF STEPS (2) AND (4) AND THE HEAVIER HYDROCARBONS OF STEP (5).