Method of controlling dephlegmation

Claim 1

A METHOD FOR RECOVERING A MAXIMUM AMOUNT OF GASOLINE, AND REMOVING ABSORBER OIL, FROM A MIXTURE OF GASOLINE VAPORS AND ENTRAINED ABSORBER OIL UNAVOIDABLY ENTRAINED WHEN SAID VAPORS ARE STRIPPED IN A STRIPPING ZONE FROM A GASOLINE COMPONENT-RICH ABSORBER OIL OBTAINED IN THE RECOVERY OF NATURAL GASOLINE, WHICH COMPRISES FEEDING SAID MIXTURE OF GASOLINE VAPORS AND ENTRAINED ABSORBER OIL TO A DEPHLEGMATION ZONE HEATED ONLY BY SAID MIXTURE OF VAPORS AND ENTRAINED ABSORBER OIL, CONDENSING IN SAID DEPHLEGMATION ZONE SOME GASOLINE COMPONENT AND ABSORBER OIL, REFLUXING SAID DEPHLEGMATION ZONE WITH WATER, REMOVING FROM SAID DEPHLEGMATION ZONE AT THE TOP PORTION THEREOF GASOLINE VAPORS FROM WHICH ENTRAINED ABSORBER OIL HAS BEEN REMOVED, COLLECTING IN SAID DEPHOLEGMATION ZONE, AT A POINT SUBSTANTIALLY REMOVED FROM THE TOP PORTION THEREOF AT WHICH GASOLINE VAPORS ARE REMOVED, WATER WHICH HAS BEEN INTRODUCED INTO SAID DEPHLEGMATION ZONE, PASSING AT LEAST A PORTION OF SAID WATER TO THE TOP PORTION OF SAID DEPHLEGMATION ZONE AS REFLUX THEREFOR, CONTROLLING ZONE, CONTHE GASOLINE VAPORS REMOVED FROM THE TOP PORTION OF SAID DEPHLEGMATION ZONE BY, IN A CONTROLLING ZONE, CONTROLLING THE REFLUX INTRODUCED INTO THE TOP PORTION OF SAID DEPHLEGMATION ZONE RESPONSIVE TO SAID TEMPERATURE, THUS WHILE KEEPING THE TEMPERATURE OF THE GASOLINE VAPORS EXITING FROM THE TOP PORTION OF SAID DEPHLEGMATION ZONE AT A CONSTANT LEVEL PERMITTING THE TEMPERATURE OF LIQUID COLLECTING IN THE BOTTOM PORTION OF SAID DEPHLEGMATION ZONE TO VARY, REMOVING AT LEAST A PORTION OF SAID LIQUID COLLECTING IN THE BOTTOM PORTION OF SAID DEPHLEGMATION ZONE, PASSING THE REMOVED LIQUID TO A VAPOR PRESSURE SENSING ZONE, IN SAID VAPOR PRESSURE SENSING ZONE ADJUSTING THE REMOVED LIQUID PASSED THERETO TO A CONSTANT PREDETERMINED TEMPERATURE, SENSING THE VAPOR PRESSURE OF THE LIQUID IN SAID VAPOR PRESSURE SENSING ZONE AT SAID CONSTANT PREDETERMINED TEMPERATURE, RELAYING A SIGNAL CORRESPONDING TO SAID SENSED VAPOR PRESSURE TO SAID CONTROLLING ZONE AND RESETTING THE CONTROLLING ZONE TO CONTROL THE TEMPERATURE OF THE GASOLINE VAPORS REMOVED FROM THE TOP OF SAID DEPHLEGMATION ZONE SO AS TO MAINTAIN THE VAPOR PRESSURE OF SAID REMOVED LIQUID, WHEN SENSED AT SAID CONSTANT PREDETERMINED TEMPERATURE, AT A CONSTANT PREDETERMINED VALUE, THEREBY REMOVING FROM THE MIXTURE OF GASOLINE VAPORS AND ABSORBER OIL, A MAXIMUM AMOUNT OF GASOLINE SO THAT ABSORBER OIL RETURNED TO THE RECOVERY OF NATURAL GASOLINE WILL HAVE A MAXIMUM CAPACITY FOR RECOVERING ADDITIONAL COMPONENTS OF GASOLINE AND ULTIMATELT A MAXIMUM AMOUNT OF GASOLINE IS RECOVERED FROM BOTH THE GASOLINE RECOVERY SYSTEM AND THE DEPHLEGMATION ZONE.

Claim 2

A METHOD FOR RECOVERING A MAXIMUM AMOUNT OF GASOLINE, AND REMOVING ABSORBER OIL, FROM A MIXTURE OF GASOLINE VAPORS AND ENTRAINED ABSORBER OIL UNAVOIDABLY ENTRAINED WHEN SAID VAPORS ARE STRIPPED IN A STRIPPING ZONE FROM A GASOLINE COMPONENT-RICH ABSORBER OIL OBTAINED IN THE RECOVERY OF NATURAL GASOLINE, WHICH COMPRISES FEEDING SAID MIXTURE OF GASOLINE VAPORS AND ENTRAINED ABSORBER OIL TO A DEPHLEGMATION ZONE HEATED ONLY BY SAID MIXTURE OF VAPORS AND ENTRAINED ABSORBER OIL, CONDENSING IN SAID DEPHLEGMATION ZONE SOME GASOLINE COMPONENT AND ABSORBER OIL, REFLUXING SAID DEPHLEGMATION ZONE WITH WATER, REMOVING FROM SAID DEPHLEGMATION ZONE AT THE TOP PORTION THEREOF GASOLINE VAPORS FROM WHICH ENTRAINED ABSORBER OIL HAS BEEN REMOVED, COLLECTING IN SAID DEPHOLEGMATION ZONE, AT A POINT SUBSTANTIALLY REMOVED FROM THE TOP PORTION THEREOF AT WHICH GASOLINE VAPORS ARE REMOVED, WATER WHICH HAS BEEN INTRODUCED INTO SAID DEPHLEGMATION ZONE, PASSING AT LEAST A PORTION OF SAID WATER TO THE TOP PORTION OF SAID DEPHLEGMATION ZONE AS REFLUX THEREFOR, CONTROLLING ZONE, CONTHE GASOLINE VAPORS REMOVED FROM THE TOP PORTION OF SAID DEPHLEGMATION ZONE BY, IN A CONTROLLING ZONE, CONTROLLING THE REFLUX INTRODUCED INTO THE TOP PORTION OF SAID DEPHLEGMATION ZONE RESPONSIVE TO SAID TEMPERATURE, THUS WHILE KEEPING THE TEMPERATURE OF THE GASOLINE VAPORS EXITING FROM THE TOP PORTION OF SAID DEPHLEGMATION ZONE AT A CONSTANT LEVEL PERMITTING THE TEMPERATURE OF LIQUID COLLECTING IN THE BOTTOM PORTION OF SAID DEPHLEGMATION ZONE TO VARY, REMOVING AT LEAST A PORTION OF SAID LIQUID COLLECTING IN THE BOTTOM PORTION OF SAID DEPHLEGMATION ZONE, PASSING THE REMOVED LIQUID TO A VAPOR PRESSURE SENSING ZONE, IN SAID VAPOR PRESSURE SENSING ZONE ADJUSTING THE REMOVED LIQUID PASSED THERETO TO A CONSTANT PREDETERMINED TEMPERATURE, SENSING THE VAPOR PRESSURE OF THE LIQUID IN SAID VAPOR PRESSURE SENSING ZONE AT SAID CONSTANT PREDETERMINED TEMPERATURE, RELAYING A SIGNAL CORRESPONDING TO SAID SENSED VAPOR PRESSURE TO SAID CONTROLLING ZONE AND RESETTING THE CONTROLLING ZONE TO CONTROL THE TEMPERATURE OF THE GASOLINE VAPORS REMOVED FROM THE TOP OF SAID DEPHLEGMATION ZONE SO AS TO MAINTAIN THE VAPOR PRESSURE OF SAID REMOVED LIQUID, WHEN SENSED AT SAID CONSTANT PREDETERMINED TEMPERATURE, AT A CONSTANT PREDETERMINED VALUE, THEREBY REMOVING FROM THE MIXTURE OF GASOLINE VAPORS AND ABSORBER OIL, A MAXIMUM AMOUNT OF GASOLINE SO THAT ABSORBER OIL RETURNED TO THE RECOVERY OF NATURAL GASOLINE WILL HAVE A MAXIMUM CAPACITY FOR RECOVERING ADDITIONAL COMPONENTS OF GASOLINE AND ULTIMATELT A MAXIMUM AMOUNT OF GASOLINE IS RECOVERED FROM BOTH THE GASOLINE RECOVERY SYSTEM AND THE DEPHLEGMATION ZONE.