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Method for preparing iodine monochloride at low cost and high efficiency and obtained iodine monochloride

A low-cost technology of iodine monochloride, applied in the direction of inter-halogen compounds, etc., can solve the problems of insufficient contact between solid and gas raw materials, strict requirements for conditions, long reaction time, etc., and achieves outstanding technical effects, low raw material requirements, Easy-to-use effects

Inactive Publication Date: 2021-09-14
成都市科隆化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patented technology still adopts the direct contact reaction between solid and gas to generate iodine monochloride, which has strict requirements on the conditions of the entire reaction system, such as first vacuuming and drying the reaction raw materials, and solid and gas The raw materials cannot be fully contacted, resulting in a longer reaction time, which is not the optimal technical solution

Method used

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  • Method for preparing iodine monochloride at low cost and high efficiency and obtained iodine monochloride

Examples

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Effect test

Embodiment 1

[0023] A method for preparing iodine monochloride with low cost and high efficiency, comprising the following steps:

[0024] S1. Refined iodine dissolving: in a 10L jar, add 10.5kg of dichloromethane, then weigh 5kg of refined iodine, add in dichloromethane in batches under stirring, and stir to dissolve the refined iodine;

[0025] S2. Chlorine gas synthesis and gas washing: Weigh 1870g of potassium permanganate, put it into a 10L large mouth bottle, take a water bath at room temperature, then weigh 9.3kg of hydrochloric acid and put it into a high-level bottle, seal the system well, open the valve to let the hydrochloric acid drip slowly and uniformly into potassium permanganate, stirring continuously, the chlorine produced is washed with saturated sodium chloride solution and sulfuric acid respectively, and then enters the refined iodine and dichloromethane solution through the buffer bottle to synthesize;

[0026] S3. Synthesis: The chlorine gas after washing is fed into ...

Embodiment 2

[0030] A method for preparing iodine monochloride with low cost and high efficiency, comprising the following steps:

[0031] S1. Refined iodine dissolving: in a 10L jar, add 11kg of dichloromethane, then weigh 5kg of refined iodine, add in dichloromethane in batches under stirring, and stir to dissolve the refined iodine;

[0032] S2. Chlorine gas synthesis and gas washing: Weigh 1870g of potassium permanganate, put it into a 10L large mouth bottle, take a water bath at room temperature, then weigh 9.3kg of hydrochloric acid and put it into a high-level bottle, seal the system well, open the valve to let the hydrochloric acid drip slowly and uniformly into potassium permanganate, stirring continuously, the chlorine produced is washed with saturated sodium chloride solution and sulfuric acid respectively, and then enters the refined iodine and dichloromethane solution through the buffer bottle to synthesize;

[0033] S3. Synthesis: The chlorine gas after gas washing is uniform...

Embodiment 3

[0037] A method for preparing iodine monochloride with low cost and high efficiency, comprising the following steps:

[0038] S1. Refined iodine dissolving: in a 10L jar, add 12kg of chloroform, then weigh 5.2kg of refined iodine, add it to the chloroform several times under stirring, and stir to dissolve the refined iodine;

[0039] S2. Chlorine gas synthesis and gas washing: Weigh 1930g of potassium permanganate, put it into a 10L large mouth bottle, put it in a water bath at room temperature, then weigh 9.5kg of hydrochloric acid and put it into a high-level bottle, seal the system well, open the valve to let the hydrochloric acid drip slowly and uniformly into potassium permanganate, continuously stirred, and the chlorine gas produced is washed with saturated sodium chloride solution and sulfuric acid respectively, and then enters the refined iodine and chloroform solution through the buffer bottle to synthesize;

[0040] S3. Synthesis: The chlorine gas after washing is fed ...

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Abstract

The invention discloses a method for preparing iodine monochloride at low cost and high efficiency and the obtained iodine monochloride, wherein the method comprises the following steps: S1, adding refined iodine into a solvent for dissolving to obtain an iodine-containing solution; S2, introducing chlorine in a stoichiometric ratio into the iodine-containing solution for a reaction, controlling the temperature of a reaction system to be 30-35 DEG C, and thus obtaining a mixed solution after the reaction; S3, carrying out atmospheric distillation on the mixed solution to separate out the solvent, then carrying out vacuum distillation, and obtaining the finished product iodine monochloride when the distillate is black, wherein the solvent is at least one of dichloromethane, trichloromethane and normal hexane. According to the method, iodine is dissolved by using a specific solvent of dichloromethane, trichloromethane or normal hexane, then chlorine is introduced for reaction, the chlorine can be completely absorbed for reaction, a byproduct iodine trichloride is not generated, tail gas is basically not discharged, a tail gas treatment link is not needed, the whole reaction process is efficient and rapid, the preparation cost is low, and the defects of a traditional preparation method are overcome.

Description

technical field [0001] The invention relates to the technical field of preparation of iodine monochloride, in particular to a method for preparing iodine monochloride with low cost and high efficiency and the obtained iodine monochloride. Background technique [0002] Iodine monochloride is an important basic chemical raw material, mainly used as iodination reagent, iodide on benzene ring and Webster's reagent. At present, the synthetic method of iodine monochloride mainly contains three kinds: 1, take solid iodine simple substance as raw material, pass into chlorine gas reaction and generate iodine monochloride, for example Japanese patent JPH01141803A adopts this method to obtain the iodine monochloride of purity greater than 99.5% Product, in this method, the loss of iodine and chlorine is still more than 2% (sublimed iodine and chlorine are discharged through tail gas), and the purity requirement to iodine raw material is higher, domestic can only import, use cost is hig...

Claims

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Application Information

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IPC IPC(8): C01B7/24
CPCC01B7/24
Inventor 刘林张松植利军赵绍益张晓斌吴进宏彭伟闫伟张碧元吴文秀傅建张仁友唐波姚国峰张仕君吴秀英
Owner 成都市科隆化学品有限公司
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