Process for isomerization of 1-olefins and use of isomerized product in alkylation

Claim 1

A PROCESS FOR THE ALKYLATION OF AN ISOPARAFFIN WHICH COMPRISES PASSING A STREAM OF LIQUID ISOPARAFFIN HYDROCARBON THROUGH A BODY OF HYDROGEN FLUORIDE-CONTAINING LIQUID TO DISSOLVE HYDROGEN FLUORIDE IN THE ISOPARAFFIN LIQUID, SEPARATING THE HF-ISOPARAFFIN SOLUTION FROM SAID BODY AND ADDING THERETO A MONO-OLEFIN OF AT LEAST 4 CARBON ATOMS PER MOLECULE AND HAVING A TERMINAL DOUBLE BOND, SUBJECTING THE MIXTURE THUS FORMED TO ALTERNATING HYDROFLUORINATION AND DEHYDROFLUORINATION REACTIONS UNTIL SUBSTANTIALLY ALL OF SAID MONO-OLEFIN IS CONVERTED TO AN ISOMER HAVING ITS DOUBLE BOND MORE CENTRALLY LOCATED IN THE CARBON ATOM CHAIN, SUPPLYING THE RESULTANT MIXTURE OF SAID ISOMER, ISOPARAFFIN AND HYDROGEN FLUORIDE TO AN ALKYLATING ZONE, INTRODUCING TO SAID ZONE SUFFICIENT ADDITIONAL HYDROGEN FLUORIDE TO PROVIDE THEREIN A CATALYTIC AMOUNT OF HYDROGEN FLUORIDE, AND REACTING SAID ISOMER WITH THE ISOPARAFFIN IN THE ALKYLATING ZONE IN THE PRESENCE OF THE HYDROGEN FLUORIDE CATALYST.