Alkylation of isoparaffins with alkyl sulfates

Claim 1

A PROCESS FOR THE ALKYLATION OF REACTION ISOPARAFFINS CONTAINING AT LEAST ONE TERTIARY HYDROGEN ATOM WITH ALKYL SULFATES PREPARED BY THE REACTION OF OLEFINS OF AT LEAST THREE CARBON ATOMS PER MOLECULE WITH AQUEOUS SULFURIC ACID IN WHICH THE SULFURIC ACID CONTENT IS WITHIN THE RANGE OF 96.4 PERCENT TO 98.2 PERCENT SULFURIC ACID BY WEIGHT, COMPRISING THE STEPS OF DISSOLVING THE ALKYL SULFATES IN THE MIXTURE OF THE REACTANT ISOPARAFFINS, MIXING THE SOLUTION OF THE ALKYL SULFATES IN THE ISOPARAFFINS WITH A RECYCLE STREAM OF THE ACID WHICH IS A PRODUCT OF THE ALKYLATION REACTION, MAINTAINING THE TEMPERATURE IN SAID MIXING STEP AT LESS THAN 100* F. DURING THE MIXING IN THE PREPARATION OF THE ALKYLATION REACTION MIXTURE, PREHEATING THE RESULTING MIXTURE TO INITIATE THE ALKYLATION REACTION, COMPLETING THE ALKYLATION REACTION IN A FLOWING STREAM AT A CONSTANTLY INCREASING TEMPERATURE, FLOWING THE ALKYLATION REACTION MIXTURE DURING THE ALKYLATION REACTION THROUGH A CONFINED LINEAR FLOW PATH TO MAINTAIN EFFECTIVE CONTACT BETWEEN THE COMPONENTS OF THE REACTING MIXTURE WHILE SIMULTANEOUSLY MAINTAINING A MINIMUM OF BACK-MIXING OF THE ALKYLATION REACTION MIXTURE FROM A POINT AT WHICH THE REACTION MIXTURE IS IN A MORE ADVANCED STAGE OF REACTION TO A POINT