Potassium hydroxide white powder or flake solid, with strong alkaline and corrosive, easy to absorb moisture in the air and deliquescence, absorption of carbon dioxide and potassium carbonate. It is used as desiccant, absorbent, oxalic acid and potassium salt, electroplating, carving and lithography. What is the synthesis principle of potassium hydroxide? Today, let's introduce the synthesis principle of potassium hydroxide?

一、水銀電解法電解液的配制同隔膜電解法。電解室中以石墨(或金屬)作陽極，水銀作陰極，電解產(chǎn)生的氯氣送氯氣干燥工序，生成的鉀汞齊流入解汞室。大部分未反應(yīng)的氫氧化鉀以淡鹽水狀態(tài)經(jīng)處理后，返回原料溶解工序。鉀汞齊與清水反應(yīng)生成氫氧化鉀和氫氣。因解汞室出來的氫氧化鉀濃度為45%50%，可作為液體氫氧化鉀產(chǎn)品，也可再經(jīng)熬堿鍋蒸濃成固堿或制成片狀氫氧化鉀產(chǎn)品。

1、 The preparation of electrolyte for mercury electrolysis is the same as that for diaphragm electrolysis. In the electrolysis chamber, graphite (or metal) is used as anode and mercury as cathode. The chlorine generated by electrolysis is sent to the chlorine drying process, and the potassium amalgam generated flows into the mercury dissolving chamber. Most of the unreacted potassium hydroxide is treated in the state of dilute brine and then returned to the raw material dissolution process. Potassium amalgam reacts with water to produce potassium hydroxide and hydrogen. Because the concentration of potassium hydroxide from the mercury dissolving chamber is 45% to 50%, it can be used as liquid potassium hydroxide product, or evaporated to form solid alkali or flake potassium hydroxide product.

二、隔膜電解法原料氫氧化鉀在化鹽槽溶化成飽和溶液，加熱90℃時分別加入碳酸鉀、苛性鉀、氯化鋇除去鈣、鎂和硫酸根等雜質(zhì)，經(jīng)沉降除渣、鹽酸中和、精制的含氫氧化鉀280315g/L的氫氧化鉀溶液經(jīng)預(yù)熱到7075℃后進(jìn)行電解，得氫氧化鉀、氯氣和氫氣。

2、 Potassium hydroxide, the raw material of diaphragm electrolysis, is dissolved into saturated solution in the salt bath. When heated to 90 ℃, potassium carbonate, caustic potassium and barium chloride are added to remove impurities such as calcium, magnesium and sulfate. After sedimentation and slag removal, hydrochloric acid neutralization and refining, the 280-315g / L potassium hydroxide solution containing potassium hydroxide is preheated to 70-75 ℃ for electrolysis to obtain potassium hydroxide, chlorine and hydrogen.

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% to 11%, and the solution containing 45% to 50% potassium hydroxide is prepared by evaporation concentration and cooling clarification; It can also continue to concentrate in the alkali boiling pot and decolorize to produce solid potassium hydroxide or flake potassium hydroxide products.

另外工業(yè)上制取氫氧化鉀是電解氫氧化鉀的水溶液。因為氫氧化鉀比氫氧化鈉難脫水，市售品的純度一般只能達(dá)到85%86%。如需提純可按照提純氫氧化鈉的相同的方法進(jìn)行提純。

In addition, the industrial preparation of potassium hydroxide is the aqueous solution of electrolytic potassium hydroxide. Because potassium hydroxide is more difficult to dehydrate than sodium hydroxide, the purity of commercial products can only reach 85% to 86%. If purification is needed, the same method can be used to purify sodium hydroxide.

以上就是我們氫氧化鉀廠家為大家介紹氫氧化鉀的合成原理，更多的知識歡迎關(guān)注我們的網(wǎng)站http://www.shrisa.cn

The above is our potassium hydroxide manufacturers to introduce the synthesis principle of potassium hydroxide, more knowledge welcome to pay attention to our website http://www.shrisa.cn