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本发明涉及一种用精对苯二甲酸(PTA)残液制得醋酸的自控式蒸馏釜,由外壁、内壁、导热油腔体、搅拌轴、搅拌框、电动机、变速器、液位计和A/D转换器组成。外壁的顶部设有残夜进口和醋酸出口,底部设有残渣出口;内外壁之间形成导热油腔体,蒸馏釜的内腔为真空密封;搅拌框与蒸馏釜内壁间的距离为0.5~5cm;变速器与搅拌轴联接,电动机的主轴与变速器联接;液位计设置在外壁的顶部,监控蒸馏釜内的液位变化,将测得的液位信号通过A/D转换器转换为电信号,传递给蒸馏釜顶部的进料口,当液位达到一定值时可以,进料口将自动打开向蒸馏釜内添加物料。
The invention relates to a self-regulating distillation kettle for preparing acetic acid from residue of purified terephthalic acid (PTA), which comprises an outer wall, an inner wall, a heat conducting oil cavity, a stirring shaft, a stirring frame, a motor, a transmission, / D converter. The top of the outer wall is provided with a residual night inlet and an acetic acid outlet, a residue outlet is arranged at the bottom of the outer wall, a heat conducting oil cavity is formed between the inner wall and the outer wall, the inner cavity of the distillation kettle is sealed in a vacuum and the distance between the stirring frame and the inner wall of the distillation kettle is 0.5-5cm ; The transmission is connected with the stirring shaft, the main shaft of the electric motor is connected with the transmission; the liquid level gauge is arranged at the top of the outer wall to monitor the liquid level change in the distillation pot; the measured liquid level signal is converted into an electrical signal by A / D converter; Conveyor to the top of the distillation pot feeding port, when the liquid level reaches a certain value can be, the feed port will automatically open to the distillation pot to add material.