The invention relates to a device and a method for eliminating and recycling
organic solvent from
cathode electrophoresis emulsion. The device comprises an upper
tower section, a middle
tower section and a lower
tower section, wherein a carrier gas inlet is formed at the lower part of the lower tower section, the lower end of the lower tower section is connected with a
heat exchanger of which the bottom is connected with an
emulsion recover kettle, the lower end of a heat exchange tube in the
heat exchanger is provided with a cold
emulsion feeding hole, the upper end of the heat exchange tube is provided with an emulsion
discharge hole, the emulsion
discharge hole is communicated with the emulsion feeding hole at the lower end of the middle tower section by a charging pump, the upper end of the upper tower section is connected with a tower top, the tower top is externally connected with a condenser, a
reflux ratio controller is arranged on the condenser, the bottom of the condenser is connected with a
solvent recovery kettle, and the upper end of the condenser is connected with a
vacuum pump. The method comprises the following steps: (1) vacuumizing and introducing
water vapor; (2) performing reversed current heat exchange to the
cathode electrophoresis emulsion, and then performing gas-liquid
mass transfer in a packed tower; and (3) adjusting the
reflux ratio controller and collecting emulsion and a
solvent. According to the device and the method, the removal rate of
organic solvent is high,
zero emission is realized, the
process control is stable, the operation is simple, and the
recovery products have excellent performances.