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Working solution for producing hydrogen peroxide through anthraquinone process

A technology of working liquid and hydrogen peroxide, applied in peroxide/peroxy hydrate/peroxyacid/superoxide/ozonide, chemical instruments and methods, inorganic chemistry, etc., can solve the problem of heavy workload, high solubility, Reduce the degradation rate of anthraquinone and other problems, achieve the effect of reducing production cost, improving production capacity and improving solubility

Inactive Publication Date: 2016-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN101798065A discloses a working liquid formula for the production of hydrogen peroxide by anthraquinone method, wherein the solvent composition is: 65% to 80% of heavy aromatics, 5% to 25% of trioctyl phosphate, N-phenyl N-ethyl Benzamide 4.5%~17.8%, the solubility of the working carrier is large, the density of the working fluid is moderate, the working load is large, and the degradation rate of anthraquinone is reduced
Although the three-component system improves the solubility of anthraquinone and improves the hydrogenation efficiency, the addition of the third component also makes the mixed solvent composition more complex and increases the production cost of hydrogen peroxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] With heavy aromatics and N-octylpyrrolidone = 75:25 (volume ratio) as the working fluid medium, the solubility of 2-ethylanthraquinone is 170 g / L. The hydrogenation temperature is 55°C, the hydrogenation pressure is 0.25MPa, and the space velocity is 5h -1 , The ratio of hydrogen to liquid is 12:1. The oxidation temperature is 50°C, and the oxidation pressure is 0.20MPa. Hydrogen efficiency is 9.52 g / L

Embodiment 2

[0020] With heavy aromatics and N-octylpyrrolidone = 50:50 (volume ratio) as the working fluid medium, the solubility of 2-ethylanthraquinone is 152 g / L. The hydrogenation temperature is 55°C, the hydrogenation pressure is 0.30MPa, and the space velocity is 10h -1 , The ratio of hydrogen to liquid is 15:1. The oxidation temperature is 55°C, and the oxidation pressure is 0.20MPa. The hydrogen efficiency is 8.12 g / l.

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PUM

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Abstract

The invention discloses a working solution for producing hydrogen peroxide through an anthraquinone process. The working solution comprises a solvent and a working solution carrier, wherein the solvent comprises the following components in percentage by volume: 50-80% of heavy aromatics, preferably 70-75 percent, and 20-50% of N-octyl pyrrolidone, preferably 25-30 percent; the working solution carrier refers to alkyl anthraquinone. The working solution adopts a two-component solvent system, the anthraquinone solubility is improved, and the hydrogenation efficiency is improved. Compared with a three-component system, the two-component solvent system has the advantages that the composition is simplified, and the production cost is reduced.

Description

technical field [0001] The invention relates to a preparation method of a working fluid, in particular to a preparation method of an anthraquinone method for producing hydrogen peroxide working fluid. 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 environm...

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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