PLUG FLOW DISTILLATION TRAY AND METHOD FOR PREPARING ISOPHORON BY LIQUID-PHASE CONDENSATION OF ACETONE

摘要

The present invention provides a plug flow distillation tray and a method for preparing isophorone by liquid-phase condensation of acetone. The plug flow distillation tray provided by the present invention comprises a tray and a plug flow assembly provided on the tray, the plug flow assembly comprising a downcomer, a leveled overflow weir, a light-heavy phase flow dividing element, a liquid receiving tray I and a flow guide element; the downcomer is connected to the tray, and the leveled overflow weir is provided on an inlet of the downcomer; the light-heavy phase flow dividing element is provided in the downcomer and is located below the leveled overflow weir; the liquid receiving tray I is connected to the tray, and is located on a side opposite to the side where the downcomer is connected to the tray; the flow guide element is provided above the junction of the liquid receiving tray I and the tray, and the flow guide element is provided with a plurality of flow guide passages. A pressurized reactive distillation column comprising the plug flow distillation tray of the present invention can be used for performing post-treatment of an IP (isophorone)/alkali liquid system which is easy to foam, so that the liquid phase can be distributed and flow relatively evenly, thereby facilitating the improvement of the reaction effect.