Two-stage alkylation process

Claim 1

IN THE TWO STAGE ALKYLATION OF A TERTIARY PARAFFIN WITH AN OLEFIN IN THE PRESENCE OF SULFURIC ACID WHEREIN IN THE FIRST STAGE DELETERIOUS REACTIONS BETWEEN FRESH OLEFINS AND ACID-OLEFIN COMPLEXES ARE ADVANTAGEOUSLY INHIBITED, THE IMPROVEMENT WHICH COMPRISES FORMING A FLOWING STREAM OF A MIXTURE OF TERTIARY PARAFFIN AND OLEFIN, DIRECTING SAID STREAM THROUGH AN ELONGATED FIRST STAGE REACTION ZONE OF SMALL TRANSVERSE CROSS-SECTION, CONTACTING SAID STREAM OF PARAFFIN AND OLEFIN WITH A HIGH RATIO OF SULFURIC ACID FOR AN INSTANTANEOUS PERIOD OF TIME SUFFICIENT FOR ONLY A PARTIAL REACTION BY INJECTING SAID ACID DIRECTLY INTO SAID FIRST STAGE REACTION ZONE AND WITH THE CURRENT OF SAID STREAM, REGULATING THE FLOW OF THE RESULTING REACTION STREAM TO INSURE THE IMMEDIATE REMOVAL OF THE FORMED ACID-OLEFIN COMPLEXES FROM THE INCOMING FRESH OLEFIN TO PREVENT DELETERIOUS REACTIONS THEREWITH, PASSING THE REACTION STREAM AS A RAPIDLY FLOWING STREAM FROM SAID FIRST STAGE REACTION ZONE INTO AN ENLARGED SECOND STAGE