Composite solvent system for production process of hydrogen peroxide by anthraquinone method

An anthraquinone method hydrogen peroxide, production process technology, applied in the directions of peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, inorganic chemistry, chemical instruments and methods, etc., can solve the solvent market Problems such as high price and difficulty in solvent production can achieve the effect of improving surface tension characteristics, increasing solubility, and improving extraction efficiency

Active Publication Date: 2017-02-01
北京凯迪森科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the special solvents that have been developed in the early stage abroad and have been applied on a large scale, or because of the difficulty in the production of these solvents, or because of the high market price of these solvents, or because of certain problems in these solvents themselves, the hydrogen peroxide has not been released in China for a long time. Large-scale promotion and application in the production industry

Method used

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  • Composite solvent system for production process of hydrogen peroxide by anthraquinone method
  • Composite solvent system for production process of hydrogen peroxide by anthraquinone method
  • Composite solvent system for production process of hydrogen peroxide by anthraquinone method

Examples

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Embodiment 1

[0044] A preparation method for trans-1,2-cyclohexanediol diacetate, comprising the following steps:

[0045] (1) if figure 1 Shown, in the 1000ml four-necked flask 1 that has mechanical stirrer 2 and reflux separator 3 (the opening that has thermometer is in figure 1 116 g (1 mol) of a sample of trans-1,2-cyclohexanediol and 8.0 g of esterification catalyst p-toluenesulfonic acid were added, and then 200 g of reaction solvent methylcyclohexane was added. The four-necked flask 1 was placed in an electric heating mantle 5 to heat up to completely dissolve the trans-1,2-cyclohexanediol and the esterification catalyst.

[0046] In this example, trans-1,2-cyclohexanediol is obtained by hydrolysis reaction of epoxycyclohexane recovered from the by-product light oil in the production process of cyclohexanone under acidic conditions; the hydrolysis reaction The post-treatment of liquid includes stratification, neutralization, concentration, crystallization and centrifugal separatio...

Embodiment 2

[0053] A kind of complex type solvent system for the anthraquinone method hydrogen peroxide production technique of the present invention, comprises heavy aromatic hydrocarbon (usually C 9 ~C 10 Heavy aromatics), trioctyl phosphate, isooctyl acetate and trans-1,2-cyclohexanediol diacetate, wherein trans-1,2-cyclohexanediol diacetate is obtained from Example 1 method prepared. The ratio of each component in the composite solvent system of this embodiment is (mass percentage) heavy aromatic hydrocarbon: trioctyl phosphate: isooctyl acetate: trans-1,2-cyclohexanediol diacetate=63%: 23 %: 7%: 7%. In the present invention, each component can be implemented within the following preferred ranges: 60% to 65% of heavy aromatics, 20% to 25% of trioctyl phosphate, 6% to 8% of isooctyl acetate, trans- The content of 1,2-cyclohexanediol diacetate is 6%-8%, and the mass ratio of isooctyl acetate to trans-1,2-cyclohexanediol diacetate is more preferably 1:1.

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Abstract

The invention discloses a compound type solvent system for an anthraquinone method hydrogen peroxide production process. The compound type solvent system comprises trans-1,2-cyclohexanediol diacetate or comprises trans-1,2-cyclohexanediol diacetate, heavy aromatic hydrocarbon, trioctyl phosphate and isooctyl acetate. The compound type solvent system disclosed by the invention can be used for greatly reducing the production cost, is high in hydrogen peroxide extraction distribution coefficient, high in anthraquinone solubility and high in hydrogenation efficiency and can be applied to industrialized production on a large scale, and a raw material is simple and easy to obtain.

Description

technical field [0001] The invention relates to a working fluid solvent system in the hydrogen peroxide production process, in particular to a composite solvent system used in the anthraquinone hydrogen peroxide production process. Background technique [0002] The basic core of the anthraquinone hydrogen peroxide production process has two elements: one is the alkyl anthraquinone called "carrier", and the other is the working fluid solvent system. Among them, the basic function of the solvent in the working fluid is to dissolve anthraquinone, so that the hydrogenation reaction of anthraquinone and the oxidation reaction of hydroanthraquinone can be carried out in the form of gas-liquid mass transfer; The hydrogen peroxide in the reaction solution is extracted to obtain the finished product of hydrogen peroxide; the raffinate phase working solution obtained in the extraction process is purified and regenerated in the post-treatment process, and then recycled to the anthraqui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/023
CPCC01B15/023
Inventor 杨华卿光宗于星杨文勇
Owner 北京凯迪森科技有限公司
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