A distillation apparatus for a pigment production process containing a solid solvent

Abstract

The utility model relates to the field of pigment preparation discloses a kind of rectifying device of pigment production process solid solvent, including rectifying tower, the outlet of rectifying tower lower side is connected with discharge pump and axial flow pump respectively by three-way pipe, the output end of axial flow pump is connected with reboiler by connecting pipe, the top outlet of rectifying tower is connected with condenser, the outlet of condenser is connected with condensing tank, the liquid phase outlet of condensing tank is connected with reflux tank, the top material outlet of reboiler is connected to rectifying tower kettle middle lower part by ascending pipe line, the outlet of reflux tank is connected with rectifying tower top reflux port and solvent outlet respectively by three-way pipe, in the utility model, by forced circulation and accelerated flow, effectively reduce the adhesion of solid impurities in heat exchange tube inner wall, reduce cleaning frequency, prolong the life of heat exchanger, improve the operating efficiency of overall tower, simultaneously, by condensation and reflux system, ensure the high purity and maximum recovery rate of solvent.

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