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发明公开
CN106693599A 六氟磷酸锂制备过程中废气的处理装置和方法 审中-实审

六氟磷酸锂制备过程中废气的处理装置和方法
摘要：
本申请公开了一种六氟磷酸锂制备过程中废气的处理装置和方法，该方法，依次包括步骤：s1、通过冷凝方式分离废气中的氟化氢；s2、废气中氯化氢通过水进行吸收。废气处理装置包括：冷媒换热器，具有一废气入口和一废气出口，该废气入口连通于废气输送管道；水洗塔，连通于所述冷媒换热器的废气出口。本发明通过两步法对废气进行处理，首先采用冷凝手段对废气中份氟化氢进行分离，分离后的氟化氢可以作为原料重复使用；其次采用水吸收方式吸收氯化氢并形成盐酸，获得的盐酸可以重复利用。
摘要（英）：

The invention discloses a device and method for treating waste gas in lithium hexafluorophate preparation process. The method sequentially comprises the steps that s1, hydrogen fluoride in waste gas is separated in a condensation mode; and s2, the hydrogen chloride in the waste is absorbed through water. The waste gas treating device comprises a refrigerant heat exchanger provided with a waste gas inlet and a waste gas outlet and a water scrubber, wherein the waste gas inlet is communicated with a waste gas delivery pipeline, and the water scrubber is communicated with the waste gas outlet of the refrigerant heat exchanger. The waste gas is treated by adopting a two-step method, firstly, the hydrogen chloride in the waste is separated in the condensation mode, the separated hydrogen chloride can serve as a raw material to be used repeatedly; secondly, a water absorbing mode is adopted to absorb the hydrogen chloride, hydrochloric acid is formed, and the obtained hydrochloric acid can be repeatedly utilized.

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