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A kind of solvent system and method for producing hydrogen peroxide by anthraquinone method

A technology of hydrogen peroxide and anthraquinone method, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve the problem of increasing cost and increasing separation Burden, complex components of multi-component systems, etc.

Active Publication Date: 2021-10-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of low solubility of anthraquinone and low hydrogenation efficiency in the two-component solvent system of the production of hydrogen peroxide by anthraquinone method in the prior art, or complex components of the multi-component system, which increases the separation burden in the later stage and thus increases the cost, the present invention provides a A two-component solvent system and method for producing hydrogen peroxide by an anthraquinone method, which improves the solubility of anthraquinone and hydrogenation efficiency, and simplifies the composition and reduces the production cost compared with the three-component system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] With heavy aromatics: N, N'-diethyl diamide = 75:25 (volume ratio) as the solvent system, the composition of the heavy aromatics is: C8 aromatics -1 , The ratio of hydrogen to liquid is 8:1. The oxidation temperature is 50°C, and the oxidation pressure is 0.20MPa. The hydrogen efficiency was determined to be 10.21 g / L.

Embodiment 2

[0023] Take heavy aromatics: N, N'-diethyldiamide = 70:30 (volume ratio) as the solvent system, the composition of heavy aromatics is the same as in Example 1, add 2-ethylanthraquinone to saturation, and dissolve 2-ethylanthraquinone The amount is 170 g / l solvent. The hydrogenation temperature is 55°C, the hydrogenation pressure is 0.30 MPa, and the space velocity is 10h -1 , The ratio of hydrogen to liquid is 10:1. The oxidation temperature is 55°C, and the oxidation pressure is 0.20MPa. The hydrogen efficiency was determined to be 9.42 g / L.

Embodiment 3

[0025] Take heavy aromatics: N, N'-diethyldiamide = 60:40 (volume ratio) as the solvent system, the composition of heavy aromatics is the same as in Example 1, add 2-ethylanthraquinone to saturation, and dissolve 2-ethylanthraquinone The amount is 165 g / l solvent. The hydrogenation temperature is 55°C, the hydrogenation pressure is 0.25 MPa, and the space velocity is 10h -1 , The ratio of hydrogen to liquid is 8:1. The oxidation temperature is 50°C, and the oxidation pressure is 0.20MPa. The hydrogen efficiency was determined to be 8.74 g / L.

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Abstract

A solvent system and method for producing hydrogen peroxide by anthraquinone method, the solvent system includes the following components in terms of volume percentage: heavy aromatics: 50%~80%, N,N′-diethyloxalamide : 20%~50%. Alkyl anthraquinone is dissolved in the above solvent system as a working solution, and hydrogen peroxide is prepared by anthraquinone method. The solvent system used in the prior art is generally two-component or three-component, and the two-component has low solubility for alkyl anthraquinone, thereby reducing the problem of hydrogenation efficiency. Although the three-component or even more components are to a certain extent It can improve the solubility of alkyl anthraquinone and improve the catalytic efficiency, but it will complicate the system and increase the production cost of hydrogen peroxide. The two-component system of the present invention is used as a solvent system for producing hydrogen peroxide by an anthraquinone method, has simple composition and low cost, and can increase the solubility of alkyl anthraquinone, thereby improving the hydrogen efficiency of the reaction.

Description

technical field [0001] The invention relates to a solvent and a method for producing hydrogen peroxide by an anthraquinone method, and belongs to the technical field of hydrogen peroxide preparation. Background technique [0002] Hydrogen peroxide is an important chemical product, which is widely used in papermaking, chemical industry, food, environmental protection and other fields. Many valuable chemical products can be prepared from hydrogen peroxide, such as inorganic peroxyacids and their salts, epoxides, organic peroxides, and meaningful chemical reaction intermediates. As a weak oxidizing agent, hydrogen peroxide has much higher selectivity than other oxidizing agents in organic synthesis. Hydrogen peroxide is used as a bleaching agent in the textile industry and papermaking industry, as an oxidizing agent in chemical synthesis, as a disinfectant and bactericide in the food and pharmaceutical industries, and can be used to treat toxic wastewater in terms of environme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/023
Inventor 贾立明徐会青刘全杰王伟
Owner CHINA PETROLEUM & CHEM CORP
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