N-methylpyrrolidone high-efficiency water removal distillation device

Abstract

The utility model relates to distillation device technical field, concretely to a kind of N-methyl pyrrolidone efficient water removal distillation device, including still kettle;The distillation kettle outer wall is fixed with support, since outlet pipe is constituted by first pipeline, second pipeline, third pipeline, when still kettle works, water vapor can exert pressure to the sealing plate inside second pipeline, sealing plate can drive movable rod to move in the movable hole of cross mounting frame at this time, spring also can contract movement, after still kettle work ends, the pressure exerted to sealing plate by water vapor weakens, sealing plate is moved under the action of spring at this time, drives fixed rod, when sealing plate and second pipeline inner bottom abut, it can be sealed to second pipeline, avoid the water drop of first pipeline, second pipeline inner wall through third pipeline enters still kettle inside, to improve the water removal efficiency of still kettle to N-methyl pyrrolidone (NMP).

Images