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Solvent system and method of producing hydrogen peroxide through anthraquinone process

A hydrogen peroxide, anthraquinone method technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, inorganic chemistry, etc., can solve the problem of low hydrogenation efficiency, increased Cost, low solubility of anthraquinone and other problems, to achieve the effect of improving solubility, improving hydrogen efficiency, and simple composition

Active Publication Date: 2019-06-18
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

The invention discloses a solvent system and method of producing hydrogen peroxide through anthraquinone process. The solvent system is prepared from the following components in volume percentage: 50-80 percent of heavy aromatics, and 20-50 percent of N,N'-diethylethanediamide. The hydrogen peroxide is prepared through the anthraquinone process by dissolving alkyl anthraquinone in the solvent system to serve as a working solution. The solvent system used in the prior art is generally bi-component or tri-component, the bi-component solvent system has low solubility on alkyl anthraquinone, thereby lowering hydrogenation efficiency; although the tri-component or more components solvent system can improve the solubility on alkyl anthraquinone to a certain degree, and improve catalytic efficiency, the system is made to be more complex, and the production cost of hydrogen peroxide is increased. According to the bi-component solvent system adopted by the invention as the solvent system of producing hydrogen peroxide through the anthraquinone process, the composition is simple, the cost is low, the solubility on alkyl anthraquinone is improved, and therefore the hydrogenation efficiency isimproved.

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 Applications(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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