Purification of hydrocarbons

Claim 1

A PROCESS FOR THE PURIFICATION OF UNSATUREATED HYDROCARBONS CONTAMINATED WITH CARBONYL COMPOUNDS FROM A GASEOUS MIXTURE HAVING EXCLUSIVE OF ANY WATER PRESENT FROM ABOUT 2.5 TO 80 MOL PERCENT OF THE SAID UNSATURATED HYDROCARBON AND FROM ABOUT 20 TO 93 MOL PERCENT OF NONCONDENSABLE GASES WHICH COMPRISES; (1) INTIMATELY CONTACTING THE SAID GASEOUS MIXTUE WITH CONTACTING WATER OF A PH OF AT LEAST 10 IN A CONTACTING ZONE, THE SAID CONTACTING ZONE BEING MAINTAINED AT A TEMPERATURE FROM AT LEAST THE DEW POINT OF THE SAID UNSATURATED HYDROCARBON TO LESS THAN THE BOILING POINT OF WATER UNDER THE CONDITIONS IN THE CONTACTING ZONE AND UNDER CONDITIONS SUCH THAT THE PHASE EQUILIBRIUM CONSTANS OF THE SAID CARBONYL COMPOUNDS ARE NO GREATER THAN 15, (2) TAKING OFF FROM THE SAID CONTACTING ZONE EXCLUSIVE OF ANY WATER PRESENT A GASEOUS MIXTURE COMPRISING FROM ABOUT 3.5 TO 80 MOL PERCENT OF THE SAID UNSATURATED HYDROCARBON AND FROM ABOUT 20 TO 93 MOL PERCENT OF THE SAID INDERT NONCONDENSABLE GAS, (3) REMOVING AN AQUEOUS SOLUTION FROM THE CONTACTING ZONE, THE SAID AQUEOUS SOLUTION CONTAINING DISSOLVED THEREIN BASED ON THE TOTAL MOLS OF THE AQUEOUS SOLUTION FROM ABOUT 0.01 TO 2.5 MOL PERCENT CARBONYL COMPOUNDS AND FROM 0.005 TO 0.5 MOL PERCENT OF THE SAID UNSATURATED HYDROCARBONS, THE SAID CARBONYL COMPOUND DISSOLVED IN THE AQUEOUS SOLUTION BEING EQUIVALENT TO AT LEAST ABOUT 90 MOL PERCENT OF THE CARBONYL COMPOUND ENTERING THE CONTACTING ZONE IN THE SAID GASEOUS MIXTURE, AND (4) PURIFYING THE SAID GASEOUS MIXTURE TAKEN OFF IN STEP (2) TO PRODUCE PURIFIED UNSATURATED HYDROCARBON CONTAINING ONLY MINUTE QUANTITIES OF THE SAID CARBONYL COMPOUNDS.