Controlling a combined alkylation polymerization process to increase the alkylate

Claim 1

A PROCESS WHICH COMPRISES PASSING AT LEAST A PORTION OF A HYDROCARBON FEED TO AN ALKYLATION ZONE, SAID HYDROCARBON FEED COMPRISING ISOBUTANE AND AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF BUTYLENES AND PROPYLENE, PASSING THE REMAINDER OF SAID HYDROCARBON FEED TO A POLYMERIZATION ZONE, PASSING A HYDROCARBON EFFLUENT FROM SAID ALKYLATION ZONE TO A FIRST FRACTIONATION ZONE, RECYCLING AN ISOBUTANE STREAM FROM SAID FIRST FRACTIONATION ZONE TO SAID ALKYLATION ZONE, WITHDRAWING AN ALKYLATE PRODUCT STREAM FROM SAID FIRST FRACTIONATION ZONE, PASSING A HYDROCARBON EFFLUENT FROM SAID POLYMERIZATION ZONE TO A SECOND FRACTIONATION ZONE, WITHDRAWING A POLYMER PRODUCT STREAM FROM SAID SECOND FRACTIONATION ZONE, PASSING AN ISOBUTANE STREAM FROM SAID SECOND FRACTIONATION ZONE TO A STORAGE ZONE, PASSING AN ISOBUTANE STREAM FROM SAID STORAGE ZONE TO SAID ALKYLATION ZONE, MEASURING THE RATE OF FLOW OF HYDROCARBON EFFLUENT TO SAID FIRST FRACTIONATION ZONE, COMPARING THE THUS MEASURED RATE OF FLOW WITH A SIGNAL REPRESENTATIVE OF THE DESIRED RATE OF FLOW OF SAID HYDROCARBON EFFLUENT TO SAID FIRST FRACTION ZONE, MANIPULATING THE RATE OF FLOW OF ISOBUTANE FROM SAID STORAGE ZONE TO SAID ALKYLATION ZONE RESPONSIVE TO SAID COMPARISON TO MAINTAIN THE ACTUAL RATE OF FLOW OF SAID HYDROCARBON EFFLUENT TO SAID FIRST FRACTIONATION ZONE SUBSTANTIALLY EQUAL TO SAID DESIRED RATE OF FLOW, AND VARYING THE QUANTITY OF SAID PORTION OF SAID HYDROCARBON FEED PASSED TO SAID ALKYLATION ZONE RESPONSIVE TO THE LIQUID LEVEL IN SAID STORAGE ZONE.