Potassium hydroxide is a white powder or flake solid, with strong alkalinity and corrosiveness. It is easy to absorb moisture in the air and deliquesce, and absorb carbon dioxide to form potassium carbonate. Used as desiccant, absorbent, oxalic acid and potassium salt, electroplating, engraving and lithography. What is the synthetic 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(yáng)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(lái)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 of diaphragm electrolysis. In the electrolytic 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 generated potassium amalgam flows into the mercury dissolving chamber. Most unreacted potassium hydroxide is treated in light brine and returned to the raw material dissolution process. Potassium amalgam reacts with clean water to produce potassium hydroxide and hydrogen. Because the concentration of potassium hydroxide from mercury dissolving chamber is 45% to 50%, it can be used as liquid potassium hydroxide product, or evaporated into solid alkali or made into flake potassium hydroxide product through alkali boiling pot.

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(shí)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。隔膜法所得氫氧化鉀濃度為10%11%，需通過(guò)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。

2、 Potassium hydroxide, the raw material of diaphragm electrolysis method, is dissolved into a saturated solution in a salt tank. When heated to 90 ℃, potassium carbonate, caustic potassium and barium chloride are added respectively to remove impurities such as calcium, magnesium and sulfate. The 280-315g / L potassium hydroxide solution containing potassium hydroxide is preheated to 70-75 ℃ for electrolysis to obtain potassium hydroxide, chlorine and hydrogen. The concentration of potassium hydroxide obtained by diaphragm method is 10% to 11%, which needs to be concentrated by evaporation and clarified by cooling to prepare a solution containing 45% to 50% potassium hydroxide; It can also continue to concentrate in the alkali boiling pot and decolorize to prepare 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?yàn)闅溲趸洷葰溲趸c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。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(shí)歡迎關(guān)注我們的網(wǎng)站。

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 commercially available products can only reach 85% to 86%. If purification is required, it can be purified in the same way as sodium hydroxide. The above is our potassium hydroxide manufacturer to introduce the synthesis principle of potassium hydroxide. For more knowledge, please pay attention to our website.