Method for producing oxydol by anthraquinone method

A technology of hydrogen peroxide, anthraquinone method, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, metal/metal oxide/metal hydroxide catalyst, etc. It can solve the problems of hydrogenation, increase the consumption of anthraquinone, and unstable system operation, and achieve the effects of inhibiting degradation, reducing consumption of anthraquinone, and reducing the probability of hydrogenation.

Inactive Publication Date: 2009-09-16
YANTAI BAICHUAN HUITONG TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After the catalyst is passed through the working solution (diethylanthraquinone is used as the carrier, and the aromatic hydrocarbon and trioctyl phosphate are used as the solvent to prepare the working solution), the working solution is immersed in the catalyst, and the anthraquinone dissolved in the working solution is also After entering the catalyst, inside the catalyst, the internal diffusion resistance of anthraquinone is very large, and the catalyst has just been activated by hydrogen at this time, and the activity is very high, which can easily cause excessive hydrogenation of anthraquinone, thereby producing a large amount of degradation products, making the system Unstable operation also increases the consumption of anthraquinone

Method used

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  • Method for producing oxydol by anthraquinone method

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Embodiment 1

[0025] Embodiment 1: a kind of method for producing hydrogen peroxide by anthraquinone method, according to the prior art, put palladium catalyst into the hydrogenation tower and pass through hydrogen to activate, then carry out nitrogen replacement, immerse the heavy aromatic hydrocarbon in the palladium catalyst, soak for 8 hours, press In the prior art, diethylanthraquinone is used as a carrier, and aromatic hydrocarbons and trioctyl phosphate are used as solvents to prepare a working solution. The working solution is passed into a hydrogenation tower, and under the catalysis of a palladium catalyst, hydrogenation reaction is carried out with hydrogen. Obtain the corresponding hydroanthraquinone solution, that is, the hydrogenation solution, and then pass the hydrogenation solution into the oxidation tower, and the hydroanthraquinone in the hydrogenation solution undergoes an oxidation reaction with oxygen, and the hydroanthraquinone returns to diethylanthraquinone, that is, ...

Embodiment 2

[0026] Embodiment 2: a kind of anthraquinone method produces the method for hydrogen peroxide, puts palladium catalyst in the hydrogenation tower, immerses trioctyl phosphate in the palladium catalyst and immerses, soaks for 12 hours, and then activates the palladium catalyst by leading hydrogen according to the prior art, Carry out nitrogen displacement afterward, according to existing technology, take diethylanthraquinone as carrier, take aromatic hydrocarbon and trioctyl phosphate as solvent, prepare working liquid, pass working liquid in the hydrogenation tower, under the catalysis of palladium catalyst, Carry out hydrogenation reaction with hydrogen to obtain the corresponding hydroanthraquinone solution, that is, the hydrogenated liquid, and then pass the hydrogenated liquid into the oxidation tower, and the hydroanthraquinone in the hydrogenated liquid undergoes an oxidation reaction with oxygen, and the hydroanthraquinone returns to diethylanthraquinone , that is, the o...

Embodiment 3

[0027] Embodiment 3: a kind of method that anthraquinone method produces hydrogen peroxide is substantially the same as embodiment 1, and its difference is that immersion C in the palladium catalyst 9 -C 11 A mixture of high boiling petroleum aromatics, methylnaphthalene, dimethylnaphthalene and tert-butylbenzene, soak for 2 hours.

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Abstract

The invention discloses a method for producing hydrogen peroxide by an anthraquinone method. The process step is to put a palladium catalyst in a hydrogenation tower to activate hydrogen, and then carry out nitrogen replacement. Under the catalytic action of the catalyst, hydrogenation reaction with hydrogen is carried out to obtain the corresponding hydrogenated liquid, and then the hydrogenated liquid is passed into the oxidation tower. After the purification treatment, the finished product is made, and the raffinate is recycled as a working fluid after treatment. It is characterized in that the palladium catalyst is subjected to quenching and softening treatment. The anthraquinone degradation caused by the catalyst can give full play to the activity of the catalyst and increase the stability of the system operation.

Description

Technical field: [0001] The invention relates to a method for producing hydrogen peroxide, in particular to a method for producing hydrogen peroxide by an anthraquinone method. Background technique: [0002] The production of hydrogen peroxide by anthraquinone method is one of the most mature production methods in the world at present. The hydrogenation catalysts used in the production of hydrogen peroxide by anthraquinone method are basically palladium-based catalysts, including fixed-bed catalysts and suspended-bed catalysts. After the catalyst is passed through the working solution (diethylanthraquinone is used as the carrier, and the aromatic hydrocarbon and trioctyl phosphate are used as the solvent to prepare the working solution), the working solution is immersed in the catalyst, and the anthraquinone dissolved in the working solution is also After entering the catalyst, inside the catalyst, the internal diffusion resistance of anthraquinone is very large, and the cat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/023B01J23/44
Inventor 张红杨吉存邓世盟
Owner YANTAI BAICHUAN HUITONG TECH CO LTD
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