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发明公开
CN101817513A 磷酸净化装置 有权 转让

磷酸净化装置
摘要：
本发明公开了一种利用离子交换膜净化磷酸的磷酸净化装置，该装置能得到高纯度的磷酸。该磷酸净化装置，包括电渗析装置，在电渗析装置内设置有阳极与阴极，在阳极与阴极之间设置有阳离子交换膜与阴离子交换膜，阳离子交换膜与阴离子交换膜之间形成中间室，所述阳离子交换膜靠近阴极，阳离子交换膜与阴极之间形成阴极室，阴离子交换膜靠近阳极，阴离子交换膜与阳极之间形成阳极室。即将阳极、阴离子交换膜、阳离子交换膜与阴极在电渗析装置内顺序布置，使得该装置在透过阴阳离子的同时，能有效去除阴阳离子杂质，提高对磷酸的提纯效果，适合在食品级磷酸的制备中推广应用。
摘要（英）：

The invention discloses a phosphoric acid purification device utilizing ion exchange membranes for purifying phosphoric acid, which can obtain the high-purity phosphoric acid. The phosphoric acid purification device comprises an electrodialysis device, wherein an anode and a cathode are arranged in the electrodialysis device, a cation exchange membrane and an anion exchange membrane are arranged between the anode and the cathode, an intermediate chamber is formed between the cation exchange membrane and the anion exchange membrane, the cation exchange membrane is near to the cathode, a cathode chamber is formed between the cation exchange membrane and the cathode, the anion exchange membrane is near to the anode, and an anode chamber is formed between the anion exchange membrane and the anode. That is the anode, the anion exchange membrane, the cation exchange membrane and the cathode are sequentially arranged in the electrodialysis device, thereby leading the device to effectively remove the impurities of anions and cations while leading the anions and the cations to pass, further improving the purification effect to the phosphoric acid and being applicable to popularization in the preparation of the food-grade phosphoric acid.

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