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氢氧化钾的合成原理!

发布来源:http://www.jinhao360.com    更新时间:2019-01-18 点击数:

1.隔膜电解法原料氢氧化钾在化盐槽溶化成饱和溶液,加热至90℃时分别加入碳酸钾、苛性钾、氯化钡除去钙、镁和硫酸根等杂质,经沉降除渣、盐酸中和、精制的含氢氧化钾280至315g/L的氢氧化钾溶液经预热到70至75℃后进行电解,得氢氧化钾、氯气和氢气。隔膜法所得氢氧化钾浓度为10%至11%,需通过蒸发浓缩和冷却澄清,制得含45%至50%氢氧化钾溶液;也可继续在熬碱锅中浓缩,经脱色,制得固体氢氧化钾,或经制片成片状氢氧化钾产品。

  1. The raw material of diaphragm electrolysis is potassium hydroxide dissolves into saturated solution in the salt bath. Potassium carbonate, caustic potassium and barium chloride are added to remove impurities such as calcium, magnesium and sulfate at 90 ~C respectively. The refined potassium hydroxide solution containing 280 to 315 g/L of potassium hydroxide is preheated to 70~75 ~C for electrolysis to obtain potassium hydroxide, chlorine and hydrogen. The concentration of potassium hydroxide obtained by diaphragm method is 10% to 11%. The solution containing 45% to 50% potassium hydroxide is prepared by evaporation, concentration and cooling clarification. The solid potassium hydroxide can also be obtained by continuous concentration in soda pot, decolorization, or flake-like potassium hydroxide products.
  2.水银电解法电解液的配制同隔膜电解法。电解室中以石墨(或金属)作阳极,水银作阴极,电解产生的氯气送氯气干燥工序,生成的钾汞齐流入解汞室。大部分未反应的氢氧化钾以淡盐水状态经处理后,返回原料溶解工序。钾汞齐与清水反应生成氢氧化钾和氢气。因解汞室出来的氢氧化钾浓度为45%至50%,可作为液体氢氧化钾产品,也可再经熬碱锅蒸浓成固碱或制成片状氢氧化钾产品。
  2. Preparation of electrolyte for mercury electrolysis and diaphragm electrolysis. Graphite (or metal) is used as the anode and mercury as the cathode in the electrolysis chamber. The chlorine gas produced by the electrolysis is sent to the chlorine gas drying process, and the potassium amalgam produced is flowed into the chamber. Most unreacted potassium hydroxide is treated in dilute brine and returned to the raw material dissolution process. Potassium amalgam reacts with clear 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, and can be steamed and concentrated to solid alkali or made into flake potassium hydroxide product by boiling soda pot.
氢氧化钾
  3.工业上制取氢氧化钾是电解氢氧化钾的水溶液。因为氢氧化钾比氢氧化钠难脱水,市售品的纯度一般只能达到85%至86%。如需提纯可按照提纯氢氧化钠的相同的方法进行提纯。
  3. Industrial production of potassium hydroxide is an 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%. Purification can be carried out in the same way as the purification of sodium hydroxide.
  4.氢氧化钾经精制后,预热,不断注入电解槽中,电解生成液经浓缩、脱色而得。
  4. Potassium hydroxide is refined, preheated and continuously injected into the cell. The electrolyte is concentrated and decolorized.
  5.采用离子交换膜法,以工业品氢氧化钾作为阳极室物质,纯水作为阴极室物质,在直流场作用下,K+离子透过具有选择性的阳膜进入阴极室与OH-离子生成试剂氢氧化钾,经浓缩、干燥得固体氢氧化钾。气体产物O2、H2分别由导管排出。
  5. Using ion exchange membrane method, potassium hydroxide as anode chamber material, pure water as cathode chamber material, under the action of DC field, K + ion enters the cathode chamber through selective anode membrane to form reagent potassium hydroxide with OH-ion. Solid potassium hydroxide is obtained by concentration and drying. The gas products O 2 and H 2 are discharged from the catheter respectively.
以上内容由氢氧化钾厂家整理发布,更多相关资讯可以点击咨询:http://www.jinhao360.com
The above content is organized and published by potassium hydroxide manufacturers. For more information, please click on http://www.jinhao360.com.

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