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Method for synthesizing high-pure potash iodate

A potassium iodate and high-purity technology, which is applied in the direction of iodine oxygen compounds, etc., can solve the problems of anode material pollution, high equipment requirements, and difficult operation, and achieve the effects of high product purity, convenient operation, and simple process

Inactive Publication Date: 2008-11-12
GUIZHOU UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of the electrolysis method are that the operation is difficult, the equipment requirements are high, and the anode material lead dioxide pollutes the environment, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1 of the present invention: add 10 kilograms of industrial hydrogen peroxide in the electromagnetic reactor, wherein the content of hydrogen peroxide in the hydrogen peroxide is: 30%, add 3.8 kilograms of iodine in the hydrogen peroxide, adjust the solution to pH: 1 with nitric acid, and then energize and strengthen Oxidation reaction, electromagnetic wave frequency: 915MHz, oxidation reaction time 4 minutes, add potassium hydroxide to the obtained liquid, adjust the solution to pH: 9.5, cool and crystallize to precipitate potassium iodate, filter and centrifuge, and refine the finished product with high purity potassium iodate. The hydrogen peroxide and iodine used as raw materials are both industrially pure, that is, the purity is 99%, and both potassium hydroxide and nitric acid are chemically pure, that is, the purity is 99.9%.

Embodiment 2

[0016] Embodiment 2 of the present invention: Add 10 kilograms of hydrogen peroxide in the electromagnetic reactor, wherein the content of hydrogen peroxide in the hydrogen peroxide is: 30%, add 4.5 kilograms of iodine in the hydrogen peroxide, adjust the solution to pH: 1.5 with nitric acid, and then energize to strengthen the oxidation Reaction, electromagnetic wave frequency: 945MHz, oxidation reaction time 10 minutes, add potassium hydroxide to the obtained liquid, adjust the solution to pH: 10, cool and crystallize to precipitate potassium iodate, filter and centrifuge, and refine the finished high-purity iodine Potassium acid. The raw materials hydrogen peroxide and iodine used are industrial pure, and potassium hydroxide and nitric acid are chemical pure.

Embodiment 3

[0017] Embodiment 3 of the present invention: Add 10 kilograms of hydrogen peroxide in the electromagnetic reactor, wherein the content of hydrogen peroxide in the hydrogen peroxide is: 30%, add 5 kilograms of iodine in the hydrogen peroxide, adjust the solution to pH: 2 with nitric acid, and then energize to strengthen the oxidation Reaction, electromagnetic wave frequency: 2450MHz, oxidation reaction time 16 minutes, add potassium hydroxide to the obtained liquid, adjust the solution to pH: 10.5, cool and crystallize to precipitate potassium iodate, filter and centrifuge, and refine to obtain high-purity iodine Potassium acid. The raw materials hydrogen peroxide and iodine used are industrial pure, and potassium hydroxide and nitric acid are chemical pure.

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PUM

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Abstract

The invention relates to a method for synthesizing high-purity potassium iodate, which relates to a method for synthesizing the high-purity potassium iodate by utilizing industrial oxydol, iodine and potassium hydroxides. The method adopts the technical proposal that: the clean oxidant oxydol is used for directly oxidizing the iodine in an electromagnetic reactor; the oxidation reaction is reinforced by utilization of electromagnetic waves; and the high-purity potassium iodate is synthesized by utilization of the potassium hydroxide after the reaction is over. The raw materials used by the method are mainly the iodine, the oxydol and the potassium hydroxide; the regulator is nitric acid; and the oxidation reaction is reinforced by electromagnetism. Therefore, the method is convenient, safe, energy-saving and environment-friendly, and simultaneously can overcome the technical problems in the prior art.

Description

technical field [0001] The invention relates to a method for synthesizing high-purity potassium iodate, belonging to the fields of environmental protection and chemical technology. Background technique [0002] At present, most industrial manufacturers of potassium iodate in my country usually use traditional potassium chlorate oxidation process and electrolysis process. [0003] Potassium chlorate oxidation process: oxidize iodine with potassium chlorate to obtain potassium hydrogen iodate, and then neutralize with potassium hydroxide to obtain potassium iodate. The main disadvantage of this method is that the obtained potassium iodate contains impurities such as halides, potassium chlorate, potassium hydrogen iodate, and the potassium iodate content is generally about 95%. It is difficult to meet the purity requirements as a food additive, and the chlorine gas released during the production process corrodes equipment and pollutes the environment. [0004] Electrolysis pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/22
Inventor 陈肖虎樊囿宇陈庆樊张帆邓祖林王芹刘义敏
Owner GUIZHOU UNIV
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