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熱門關鍵詞： 工业级氯化氫 化学级氯化氫 高纯级氯化氫 电子级氯化氫 硫化氫氣體 高純氯氣 配套設備

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副产盐酸解析所得氯化氫的广泛用途

返回打印发布时间：2013/6/14 点击：10876

利用副产盐酸解析制备氯化氫的方法，如今已被广泛应用于如聚氯乙烯等产品的生产中。那么，副产盐酸解析制备氯化氫的工艺流程都有哪些呢？

盐酸解析是氯化氫吸收的逆过程，当气相中溶质的实际分压低于液相溶质的平衡分压时，溶质由液相向气相转移；在标准大气压下，盐酸－水体系的恒沸点１０９℃，恒沸混合物氯化氫的质量分数为２０．２４％。因此可以采用精馏操作将高于２０．２４％的盐酸解析制氯化氫。

流程简述将氯化氫吸收装置来的质量分数～３１％的浓盐酸用泵送至脱吸塔，温度较高的氯化氫和水分的汽液混合物从塔底上升，与塔顶喷淋而下的浓盐酸进行充分的热交换，使氯化氫从浓盐酸中解吸而脱出；出塔后的氯化氫气体先用循环水冷却到４０℃后再用冷冻盐水进行冷冻脱水，制成纯度达９９％的干燥氯化氫气体。冷凝下来的浓酸重新回用于脱吸，从脱吸塔底部出来的盐酸是质量分数～２１％的共沸混合物，经循环水冷却再经冷冻盐水冷却后重新进入氯化氫吸收装置循环吸收。

经过以上精制提纯过程，所得的氯化氫完全可以满足基本的工业生产需求。为众多氯化氫需求企業大大降低了生産成本。

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