Maintenance method and titanium tetrachloride production facility of titanium tetrachloride production facility

摘要

PROBLEM TO BE SOLVED: To provide a maintenance method of a TiCl₄ production facility capable of discharging most part of TiCl₄ existing inside apparatuses, and reducing degradation of a work environment and corrosion of apparatuses caused by generation of hydrochloric acid gas when performing atmospheric opening and maintenance, and to provide a TiCl₄ production facility.;SOLUTION: In this maintenance method of a TiCl₄ production facility for cooling crude TiCl₄ gas obtained by a fluidized bed to obtain crude TiCl₄ liquid, and obtaining pure TiCl₄ liquid from the crude TiCl₄ liquid through a distillation step, atmospheric release and maintenance are performed after vacuum-sucking TiCl₄ liquid from a discharge port of a maintenance target apparatus 50 among apparatuses included in the TiCl₄ production facility. Preferably, when vacuum-sucking TiCl₄ liquid, gas in a TiCl₄ liquid recovery container 40 is evacuated to depressurize the inside of the recovery container 40, and the recovery container 40 is connected to the maintenance target apparatus 50, to thereby vacuum-suck the TiCl₄ liquid in the maintenance target apparatus 50, and vapor-liquid separation of the recovered TiCl₄ liquid is performed in the recovery container 40.;COPYRIGHT: (C)2013,JPO&INPIT