Combination isoparaffin-olefin and aromatic-olefin alkylation process

Claim 1

IN A PROCESS WHEREIN THE CONCOMITANT CATALYTIC ALKYLATION OF AN ALKYLATABLE PARAFFINIC HYDROCARBON WITH AN OLEFIN, AND AN AROMATIC HYDROCARBON WITH AN OLEFIN HAVING AT LEAST THREE AND NOT MORE THAN SIXTEEN CARBON ATOMS PER MOLECULE IS CARRIED OUT IN A SEPARATE FIRST AND A SEPARATE SECOND ALKYLATION ZONE, RESPECTIVELY, AND WHEREIN SAID SECOND ALKYLATION ZONE IS FREE OF THE ALKYLATION PRODUCT OF SAID FIRST ZONE AND WHEREIN ALKYLATION CATALYST IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN FLUORIDE, SULFURIC ACID AND ALUMINUM CHLORIDE, THE IMPROVEMENT WHICH COMPRISES; COMBINING THE EMULSIFIED REACTION EFFLUENT FROM SAID FIRST ALKYLATION ZONE DIRECTLY WITH THE EMULSIFED REACTION EFFLUENT FROM SAID SECOND ALKYLATION ZONE; SEPARATING THE RESULTING ADMIXTURE INTO A CATALYST PHASE AND A HYDROCARBON PHASE IN A CATALYST SETTLING ZONE; RETURNING A PORTION OF SAID CATALYST PHASE TO SAID SECOND ALKYLATING ZONE AND RETURNING A PORTION OF SAID CATALYST PHASE TO SAID FIRST ALKYLATION ZONE; PASSING A PORTION OF SAID CATALYST PHASE TO A CATALYST RECOVERY ZONE; RETURNING A PORTION OF SAID RECOVERED CATALYST TO SAID FIRST ALKYLATION ZONE AND A PORTION TO SAID SECOND ALKYLATION ZONE.