Working solution for producing hydrogen peroxide through stationary bed palladium catalyst process, and preparation method of working solution

A technology of hydrogen peroxide and palladium catalyst, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve low production capacity, cycle reduce the amount of hydrogen, and achieve the effect of improving hydrogen efficiency, reducing side reactions, and high distribution coefficient

Inactive Publication Date: 2013-09-18
傅骐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the invention is to overcome the lower defect of production capacity existing in the prior art, propose a kind of working fluid and preparation method that fixed-bed palladium catalyst legal system hydrogen peroxide is used, make unit working f...

Method used

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  • Working solution for producing hydrogen peroxide through stationary bed palladium catalyst process, and preparation method of working solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0094] Get 65 liters of heavy aromatics, 35 liters of 2-MCHA, and dissolve 30kg of 2-amylanthraquinone in the above-mentioned solvent, use figure 1 The test device, the diameter of the hydrogenation tower is 40mm, the height is 1425mm, and the catalyst loading is 400ml. Pass the above working fluid through the catalyst bed with a flow rate of 10 liters, equivalent to a space velocity of 25 hr -1 , the reaction temperature is 45°C, the hydrogen effect is 17.75g, the specific gravity of the working fluid is 0.963 (25°C), the oxidation time is 3 minutes, and the working fluid is 35%H 2 o 2 The lower partition coefficient is 76, at 45%H 2 o 2 The next is 78.

Embodiment 2

[0096] Get 65 liters of heavy aromatics, 20 liters of 2-MCHA, and 15 liters of DIBC, and dissolve 25 kg of 2-amylanthraquinone in the above-mentioned solvent, and use the same method as in Example 1 to obtain 16.8 g of hydrogen, and the oxidation time is 2 minutes and 30 seconds. The specific gravity of the working fluid is 0.934 (25°C), 35%H 2 o 2 The time distribution coefficient is 71,45%H 2 o 2 for 73.

Embodiment 3

[0098] Get 60 liters of heavy aromatics, 40 liters of 2-MCHA, dissolve 10kg 2-ethylanthraquinone and 15kg 2-amylanthraquinone in the above-mentioned solvent, use the same method as in Example 1 to obtain a hydrogen effect of 13g, and the oxidation time is 2 minutes, working fluid specific gravity 0.96, 35%H 2 o 2 When the distribution coefficient is 50,45% is 93.

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Abstract

The invention relates to a working solution for producing hydrogen peroxide through a stationary bed palladium catalyst process, and a preparation method of the working solution. The preparation method is characterized by comprising the steps of: with a mixture of amylanthraquinon and 2-ethylanthraquinone, or amylanthraquinon as a hydrogenated carrier, and a mixture of a C9-C10 benzene organic compound and one or more of esters, tetrabutyl urea TBU or diisobutylmethanol DIBC as a solvent, carrying out interaction on the hydrogenated carrier and the solvent to obtain a working solution system, mixing the working solution system with H2 to flow into a stationary bed reactor filled with a catalyst, carrying out a hydrogenation reaction under the conditions of temperature of 40-80 DEG C and pressure of 0.2-0.5atm to generate hydrogenated anthraquinone, then feeding the oxanthranol into an oxidation reactor for oxygen oxidization to obtain hydrogen peroxide, and oxidizing hydrogenated anthraquinone. The capability of producing the H2O2 through the unit working solution can be improved to 13-18g/l from 7-11g/l.

Description

technical field [0001] The invention relates to a production method of hydrogen peroxide, and in particular discloses a working fluid used in the production process of hydrogen peroxide produced by a fixed-bed palladium catalyst method and a preparation method thereof. Background technique [0002] Due to the extensive application of hydrogen peroxide as a chemical raw material in oxidative synthesis reactions, especially in the epoxidation of propylene to propylene oxide, the capacity of a single hydrogen peroxide plant has higher requirements. 300,000 tons of propylene oxide needs to be matched with 230,000 tons of 100% H 2 o 2 , the largest set of 500,000 tons of propylene oxide currently under construction must be equipped with 380,000 tons of 100% H 2 o 2 device, while the single hydrogen peroxide device with the largest production capacity in the world is only 110,000 tons. To match the demand for the production of propylene oxide, only 2~3 sets of equipment can be...

Claims

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Application Information

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IPC IPC(8): C01B15/023
Inventor 傅骐
Owner 傅骐
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