国内副产氢氧化钾采用两种工艺流程，一是隔膜法（金属阳极），二是离子膜法，下面来讲讲离子膜法电解制取氢氧化钾 工艺流程事项。

Two processes are adopted for domestic by-product potassium hydroxide, one is diaphragm method (metal anode), and the other is ion-exchange membrane method. The following is about ion-exchange membrane electrolysis process for preparing potassium hydroxide.

用氯化钾为原料，从离子膜电解槽流出的淡盐水经过脱氯塔脱去氯气，进入盐水饱和槽制成饱和盐水，而后再加入氢氧化 钾、碳酸钾等化学品，盐水进入澄清槽澄清，但是从澄清槽出来的一次精制盐水还有一些是悬浮物，对盐水精制的螯合树脂塔 将产生不良影响。

With potassium chloride as the raw material, the dilute brine flowing out of the ionic membrane electrolyzer goes through the dechlorination tower to remove chlorine, enters the brine saturation tank to make saturated brine, and then adds potassium hydroxide, potassium carbonate and other chemicals. The brine enters the clarifier for clarification. However, some of the primary refined brine coming out of the clarifier are suspended solids, which will have a negative impact on the chelating resin tower for brine refining.

一般要求盐水中的悬浮物小于1PPm，因此需要经过盐水过滤器过滤。而后经过二次精制，即盐水进入螯合树脂塔除去其中 的钙、镁，就可以加到离子膜电解槽的阳极室。

Generally, the suspended solids in the brine are required to be less than 1PPM, so they need to be filtered by the brine filter. After secondary refining, the brine enters the chelating resin tower to remove calcium and magnesium, and then it can be added to the anode chamber of the ion membrane electrolyzer.

与此同时，纯水和液碱一同进到阴极室。通入直流电后，在阳极室产生氯气和流出淡盐水经分离器分离，氯气输送到氯气 总管，淡盐水一般含KCl200-220g/l，经脱氯气去饱和槽。

At the same time, pure water and liquid caustic soda enter the cathode chamber together. After the DC power is supplied, the chlorine gas generated in the anode chamber and the light salt water flowing out are separated by the separator, and the chlorine gas is delivered to the chlorine header. The light salt water generally contains KCl200-220g/l and goes to the saturation tank through the dechlorination gas.

在电解槽的阴极室产生氢气和30-32%液碱同样也经过分离器，氢气输送到氢氧总管。30-32%的液碱可以作为商品出售，也 可以送到蒸发装置蒸浓到48%的液碱，作商品出售，再浓缩即可制成片、固体氢氧化钾产品。

The hydrogen generated in the cathode chamber of the electrolytic cell and 30-32% liquid alkali also pass through the separator, and the hydrogen is delivered to the hydrogen oxygen header. 30-32% of the liquid caustic soda can be sold as a commodity, or it can be sent to the evaporation unit to evaporate to 48% of the liquid caustic soda for sale as a commodity, and then concentrated into tablets and solid potassium hydroxide products.

从整体上看氢氧化钾生产与氢氧化钠生产工艺基本相同（工序流程然同）。区别仅在于原、辅材料与操作控制有一定差异 。这一方面还是要多了解的，关注我们http://www.jinhao360.com了解更多事项！

On the whole, the production process of potassium hydroxide is basically the same as that of sodium hydroxide (the process flow is the same). The difference only lies in the difference between raw materials, auxiliary materials and operation control. In this respect, we still need to know more and pay attention to us http://www.jinhao360.com Learn more!