The invention discloses a reaction vessel negative pressure
distilled water separating apparatus which comprises a reaction vessel body. A separating apparatus is arranged in the reaction vessel body and comprises a
distillation column, a condenser, a separator, a reception tank and a
vacuum pump, wherein the reaction vessel body is communicated with the
distillation column through a pipeline, the
distillation column is communicated with an inlet of the condenser through a pipeline, an outlet of the condenser is communicated with the separator through a discharging
pipe, one side of the separator is provided with a
reflux inlet, the
reflux inlet is communicated with the reaction vessel body through a
reflux pipe, the bottom of the separator is provided with a water rising opening, the water rising opening is communicated with the reception tank through a water rising
pipe, and the tops of the separator and the reception tank are respectively connected with the
vacuum pump through pipelines. The apparatus provided by the invention overcomes the following problems in usage of a traditional reaction vessel separator: water is taken back to a reaction vessel with a
solvent during two-phase separation by the traditional separator under the condition of a negative pressure, and a separation effect of a
solvent and water is poor, which causes reduction in product yield,
delay of reaction time, reduction in production efficiency and the like.