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Organic flux system in hydrogen peroxide producing process

An organic solvent and production process technology, applied in the field of organic solvent systems in the production process of hydrogen peroxide, can solve problems such as low production capacity, and achieve the effects of improving production capacity, reducing side reactions, and improving hydrogen efficiency

Inactive Publication Date: 2005-08-31
YICHANG SUPENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved in the present invention is to disclose an organic solvent system in the production process of hydrogen peroxide, so as to overcome the defect of low production capacity in the prior art

Method used

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  • Organic flux system in hydrogen peroxide producing process

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Experimental program
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Effect test

Embodiment 1

[0029] use figure 1 The procedure for testing and evaluating the solvent system of the present invention.

[0030] Using 60L C 9 ~C 10 A solvent system was prepared from a mixture of aromatic hydrocarbons, 12.5L trioctyl phosphate and 26.5L 2-methylcyclohexyl acetate. At room temperature, the solubility of 2-ethylanthraquinone is 172g / L, and the catalyst is Pd-M / Al 2 o 3 , wherein, M is Na, and the content is 0.3wt%.

[0031] see figure 1 , the working liquid and hydrogen are sent to the hydrogenation tower 1 to hydrogenate the 2-ethylanthraquinone in the working liquid, the hydrogenation liquid enters the oxidation tower 2, is oxidized by the air entering the oxidation tower 2, and generates hydrogen peroxide aqueous solution, and then enters the subsequent section. The hydrogenation tower 1 is a fixed trickle bed reactor with a diameter of 40mm and a height of 1425mm, and the catalyst packing height is 400mm.

[0032] The hydrogen efficiency is 9.93g / L, the hydrogenat...

Embodiment 2

[0034] Adopt the condition of embodiment 1, change catalyst into Pd-M / SiO 2 system, M is Na, and the content is 0.3wt%. The hydrogen efficiency is 10.03g / L, the hydrogenation reaction temperature is 65°C, and the oxidation time is 4 minutes.

Embodiment 3

[0036] use figure 1 The procedure for testing and evaluating the solvent system of the present invention.

[0037] Using 72.4L C 9 ~C 10 A solvent system was prepared from a mixture of aromatic hydrocarbons, 22.5L trioctyl phosphate and 5.1L 2-methylcyclohexyl acetate. At room temperature, the solubility of 2-ethylanthraquinone is 152g / L, and the catalyst is Pd-M / Al 2 o 3 , wherein, M is Na, and the content is 0.3wt%.

[0038] see figure 1 , the working liquid and hydrogen are sent to the hydrogenation tower 1 to hydrogenate the 2-ethylanthraquinone in the working liquid, the hydrogenation liquid enters the oxidation tower 2, is oxidized by the air entering the oxidation tower 2, and generates hydrogen peroxide aqueous solution, and then enters the subsequent section. The hydrogenation tower 1 is a fixed trickle bed reactor with a diameter of 40mm and a height of 1425mm, and the catalyst packing height is 400mm.

[0039] The hydrogen efficiency is 8.86g / L, the hydrogena...

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Abstract

An organic solvent system for preparing H2O2 is prepared from C9-C10 arylhydrocarbon (100 wt portions), trioctyl phosphate (0.5-50), and 2-methylcyclohexyl acetate (0.5-90). Its advantages are high solubility of anthraquinone and hydrogenated anthraquinone in it, low by-effect and high productivity of H2O2.

Description

technical field [0001] The invention relates to a method for producing hydrogen peroxide, in particular to an organic solvent in a working liquid used in the production process of hydrogen peroxide. Background technique [0002] Hydrogen peroxide (H 2 o 2 ) is an important industrial raw material, which is widely used in various fields. At present, the production method of hydrogen peroxide mainly adopts the automatic oxidation method of anthraquinone derivatives, that is, dissolves the working substance ----- anthraquinone alkyl derivatives in an appropriate organic solvent, and makes a working solution. Anthraquinone alkyl derivatives are hydrogenated and reduced to generate hydroanthraquinone, which is oxidized by air to obtain hydrogen peroxide, and at the same time, hydrogen anthraquinone is reduced to anthraquinone derivatives, and then the hydrogen peroxide is extracted with water to obtain H 2 o 2 of aqueous solution. [0003] The anthraquinone alkyl derivatives...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/023
Inventor 傅骐王忠平张瑜平
Owner YICHANG SUPENG TECH CO LTD
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