FIELD: chemical engineering. SUBSTANCE: invention relates to a method of reaction distillation and apparatus for alkylation of benzene with liquid C8-C30-olefin or olefin/paraffin mixture. Apparatus having reactor configuration utilizing alkylation catalyst has reboiler to discharge product and raw material inlet disposed above catalyst bed. System also can have mixing means (to mix in situ benzene with olefin or with olefin/paraffin mixture) disposed in upper part of column, cooler and/or water-discharge means. EFFECT: simplified technology and increased yields. 18 cl, 2 dwg, 16 tbl, 21 ex
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