When producing potassium hydroxide, we need to consider its production process. Different treatment methods may have different effects in daily use. Therefore, due to the difference of production process, not all products have the same quality, so it is inevitable to have differences, but no matter which process, We must grasp the specific methods correctly.

(1)隔膜法(金属阳极)电解制取氢氧化钾工艺流程简叙如下：将精制后符合电解需要的水溶液氯化钾不断地注入金属阳极电解槽中，通以直流电进行电解，生成阴极室流出，通过蒸发器蒸发浓缩得到液体产品，如继续浓缩、经脱色、制片，得固体产品。其反应式如下：

(1) The process flow of electrolytic preparation of potassium hydroxide by diaphragm method (metal anode) is briefly described as follows: the refined aqueous solution potassium chloride that meets the needs of electrolysis is continuously injected into the metal anode electrolytic cell, electrolyzed with direct current to generate the outflow from the cathode chamber, evaporated and concentrated through the evaporator to obtain liquid products, such as continuous concentration, decolorization and production to obtain solid products. The reaction formula is as follows:

(2)离子膜法电解制取的工艺流程

(2) Technological process of ion-exchange membrane electrolysis

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，-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。

Using potassium chloride as raw material, the light brine from the ion-exchange membrane electrolyzer will be dechlorinated through the dechlorination tower and enter the brine saturation tank to make saturated brine, and then add potassium hydroxide, potassium carbonate and other chemicals. The brine will enter the clarification. However, some of the primary refined brine from the clarification tank are suspended solids, which will have an adverse impact on the chelating resin tower of brine refining, -Generally, the suspended solids in brine are required to be less than 1ppm, so they need to be filtered through brine filter.

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;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。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。

Then, after secondary refining, that is, the brine enters the chelating resin tower to remove calcium and magnesium, which can be added to the anode chamber of the ion-exchange membrane electrolyzer; At the same time, pure water and liquid alkali enter the cathode chamber together. After direct current is applied, chlorine gas is generated in the anode chamber and the outgoing light brine is separated by the separator, and the chlorine gas is transmitted to the chlorine main pipe. The light brine generally contains kcl200-220g / L, which is desaturated by dechlorination gas. Hydrogen and 30-32% liquid alkali generated in the cathode chamber of the electrolytic cell also pass through the separator, and the hydrogen is transmitted to the hydrogen and oxygen main pipe. 30-32% of liquid alkali can be sold as commodities, or it can be sent to the evaporation device to evaporate 48% of liquid alkali for commodity sale, and then concentrated to make tablets and solid potassium hydroxide products.

(3)由于生产工艺差别，产品质量也有一定差异，离子膜法产出的产品较隔膜法产品杂质相对少、品质高，成本价稍高，售价略高。(3) Due to different production processes, there are also some differences in product quality. The products produced by ion-exchange membrane method have relatively less impurities, high quality, slightly higher cost price and slightly higher price than those produced by diaphragm method.

氢氧化钾一般是采用两种工艺流程，一种是隔膜法(金属阳极)，二是离子膜法，而这两种流程方法，虽然说工艺基本相同，但是有些细节上却大不相同，因此，为了能够准确的分辨出他们之间的区别，那么我们就需要正确的掌握其工艺的具体方法，才能确定其质量的差异。

Potassium hydroxide generally adopts two processes, one is diaphragm process (metal anode) and the other is ion-exchange membrane process. Although the processes of these two processes are basically the same, some details are very different. Therefore, in order to accurately distinguish the differences between them, we need to correctly grasp the specific methods of their processes, To determine the difference in quality.