Abstract: Based on the bi-phase and high reaction rate properties of benzene alkylation with 1-dodecene catalyzed by ［BMIM］［AlCl₄］ ionic liquid, a continuous mixing-reacting-separating-recycling experimental setup was developed.A static mixing reactor was used to realize the needed fast mixing and chemical reaction.The continuous fast separation of ionic liquid from reaction mixture was carried out in a combined settling separator.Running tests showed that the continuous efficient mixing and separation between ionic liquid catalyst and reaction mixture could be accomplished within some flow rate ranges of the recycling reaction mixture and the ionic liquid catalyst injected.The moisture-sensitive ionic liquid catalyst could be effectively ratained in the system and recycled.Alkylation tests demonstrated that the setup could be successfully used to synthesize LAB with relatively higher 2-phenyl LAB selectivity.