氫氧化鉀現(xiàn)在被廣泛的進(jìn)行使用，在產(chǎn)品的制造方法中，有一種叫做隔膜電解的方法。那么隔膜法氫氧化鉀濃度是多少？該方法的制造步驟和該方法制造出來的成品又可以應(yīng)用于哪些方面？以下就由小編來為大家詳細(xì)的解釋一下吧:

Potassium hydroxide is now widely used. Among the manufacturing methods of products, there is a method called diaphragm electrolysis. What is the concentration of potassium hydroxide in diaphragm method? What are the manufacturing steps of the method and the finished products produced by the method? The following is a detailed explanation by the editor:

隔膜法所得氫氧化鉀濃度為10%～11%，需通過蒸發(fā)濃縮和冷卻澄清，制得含45%～50%氫氧化鉀溶液;也可繼續(xù)在熬堿鍋中濃縮，經(jīng)脫色，制得固體氫氧化鉀，或經(jīng)制片成片狀氫氧化鉀產(chǎn)品。

The concentration of potassium hydroxide obtained by diaphragm method is 10%~11%, which needs to be concentrated by evaporation and clarified by cooling to prepare potassium hydroxide solution containing 45%~50%; It can also be concentrated in the alkali boiling pot and decolorized to obtain solid potassium hydroxide or flaked potassium hydroxide products.

隔膜電解法的原料氯化鉀在化鹽槽中溶解成飽和溶液。當(dāng)加熱到90℃的時候，單獨(dú)加入碳酸鉀，苛性鉀，氯化鋇除鈣，鎂和硫酸鹽等雜質(zhì)。經(jīng)過沉淀然后去渣。用鹽酸中和。將280~315g/l氯化鉀溶液預(yù)熱70~75℃,然后電解得到氫氧化鉀。

The raw potassium chloride of diaphragm electrolysis is dissolved into a saturated solution in the salt dissolving tank. When heated to 90 ℃, potassium carbonate, caustic potash and barium chloride are added separately to remove impurities such as calcium, magnesium and sulfate. After sedimentation, the slag is removed. Neutralize with hydrochloric acid. Preheat 280~315 g/l potassium chloride solution to 70~75 ℃, and then electrolyze to obtain potassium hydroxide.

含量分析：

Content analysis:

精確稱取試樣約1.5g，溶于40mL新煮沸并冷卻后的水中，冷15℃，加酚酞試液（TS-167）數(shù)滴，用1mol/L硫酸滴定。在粉紅色消失時，記錄所耗的酸量，加甲基橙試液（TS-148）數(shù)滴，繼續(xù)滴定呈現(xiàn)持續(xù)不褪的粉紅色。記錄滴定所需酸的總體積。每1mol/L硫酸相當(dāng)于總堿量（以KOH計(jì)）56.11mg。

Accurately weigh about 1.5g of the sample, dissolve it in 40mL of newly boiled and cooled water, cool it to 15 ℃, add several drops of phenolphthalein test solution (TS-167), and titrate it with 1mol/L sulfuric acid. When the pink color disappears, record the amount of acid consumed, add a few drops of methyl orange test solution (TS-148), and continue titrating until a persistent pink color appears. Record the total volume of acid required for titration. Each 1mol/L of sulfuric acid is equivalent to 56.11mg of total alkali (calculated by KOH).

氫氧化鉀隔膜法得到的產(chǎn)品濃度是百分之十到百分之十一，需要蒸發(fā)濃縮且冷卻澄清。配制含百分之四十五到五十的產(chǎn)品溶液；也可以在堿煮鍋中濃縮。經(jīng)過脫色制備固體產(chǎn)品或者是壓片成片狀的產(chǎn)品。

The concentration of the product obtained by the potassium hydroxide diaphragm method is 10% to 11%, which requires evaporation, concentration and cooling for clarification. Prepare a product solution containing 45 to 50 percent; It can also be concentrated in an alkali boiler. After decolorization, solid products are prepared or pressed into sheets.

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