Separation of hydrocarbons by selective adsorption

Claim 1

METHOD OF SEPARATING BY MEANS OF AN OLEFINSELECTIVE ADSORBENT AN OLEFIN FROM A NON-AROMATIC HYDROCARBON CHARGE CONTAINING IT, WHICH OLEFIN HAS A TENDENCY TO POLYMERIZE IN THE PRESENCE OF THE ADSORBENT, WHICH COMPRISES: INTRODUCING INTO SAID ADSORBENT A SATURATED HYDROCARBON LIQUID TO WET THE ADSORBENT, THEN INTRODUCING SAID HYDROCARBON CHARGE IN LIQUID PHASE INTO THE ADSORBENT TO SELECTIVELY ADSORB SAID OLEFIN, THEN INTRODUCING A FURTHER AMOUNT OF SAID SATURATED HYDROCARBON LIQUID INTO THE ADSORBENT TO PARTIALLY DESORB THE OLEFIN, AND THEN INTRODUCING INTO THE ADSORBENT A LIQUID HYDROCARBON DESORBING AGENT COMPOSED AT LEST MAINLY OF AROMATIC HYDROCARBON TO FURTHER DESORB THE OLEFIN, SAID DESORBING AGENT, SAID CHAGE AND SAID SATURATED HYDROCARBON LIQUID EACH BOILING OUTSIDE OF THE BOILING RANGE OF THE OTHERS SO AS TO BE SEPARATE BY DISTILLATION.