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Pretreatment method of 2-alkylanthraquinone working solution and production method of hydrogen peroxide

An alkyl anthraquinone, working fluid technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, inorganic chemistry, etc. Product indicators, 2-alkylanthraquinone working solution contains impurities and other problems, to achieve good industrial application prospects, solve poisoning and inactivation, reduce impurities and sulfur content.

Active Publication Date: 2021-08-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Because the 2-alkylanthraquinone working solution contains impurities, it seriously affects the process operation and product indicators
And the pretreatment technology of relevant 2-alkylanthraquinone working solution has not been reported yet, for this reason, need to develop a kind of pretreatment method of new 2-alkylanthraquinone working solution

Method used

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  • Pretreatment method of 2-alkylanthraquinone working solution and production method of hydrogen peroxide
  • Pretreatment method of 2-alkylanthraquinone working solution and production method of hydrogen peroxide
  • Pretreatment method of 2-alkylanthraquinone working solution and production method of hydrogen peroxide

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preparation example Construction

[0021] According to the present invention, except that the composition of the amorphous alloy is selected according to the present invention, the preparation method of the amorphous alloy can refer to conventional methods in the art. Preferably, the preparation method of the amorphous alloy comprises: a mixture containing nickel in the above content range and one or more other metals selected from aluminum, iron, chromium, copper, zinc, molybdenum and cobalt, Preferably, the mixture of nickel, aluminum and one or more other metals selected from iron, chromium, copper, zinc, molybdenum and cobalt in the above-mentioned content range is alloyed in vacuum and at a temperature higher than their melting point, and then This alloy is rapidly quenched by the vacuum quenching method, and the rapid quenching condition is that the copper roll speed is 600-1000 revolutions / minute (the specific embodiment is preferably 800 revolutions / minute), and the spray pressure is 0.05-0.1MPa to form ...

preparation example 1

[0056] This preparation example is used to illustrate the preparation of the amorphous alloy Ni-Fe-Al adsorbent.

[0057] Add 25 grams of nickel, 50 grams of aluminum, and 15 grams of iron into the quartz tube, heat it in a high-frequency furnace to above 1300 ° C to melt it, and make it alloyed, and then the alloy liquid is sprayed from the nozzle under the quartz tube to On the copper roller with a rotating speed of 800 rpm (spray pressure 0.08MPa), cooling water is passed into the copper roller, and the alloy liquid is thrown out along the tangent of the copper roller after rapid cooling to form scale-like strips, which are ground Until the particle diameter is 60-80 microns, a master alloy is obtained. Adopt X-ray powder diffractometer (Japanese science D / MAX-2500 type X-ray diffractometer, Cu Kα ray, electric current is 100mA, the same below) carries out XRD analysis to obtained master alloy, and the obtained XRD pattern shows that in 2θ angle A diffuse peak appears at 4...

preparation example 2-6

[0060] The amorphous alloy adsorbent was prepared according to the method of Preparation Example 1, the difference was the amount and composition of the metal, and the composition of the prepared adsorbent was shown in Table 1.

[0061] Table 1

[0062]

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Abstract

The invention relates to the field of raw material pretreatment, and discloses a pretreatment method of a 2-alkylanthraquinone working solution and a method for producing hydrogen peroxide, the method comprising: combining the 2-alkylanthraquinone working solution with Adsorption desulfurization is performed by contacting the adsorbent, and washing is performed before and / or after the adsorption desulfurization, the adsorbent is an amorphous alloy, and the amorphous alloy contains nickel. The pretreatment method of the 2-alkylanthraquinone working liquid provided by the present invention can significantly reduce the impurity and sulfur content in the working liquid, and effectively solve the problem of poisoning and loss of the noble metal palladium catalyst during the hydrogenation process of the working liquid for hydrogen peroxide production. Live problems have good industrial application prospects.

Description

technical field [0001] The invention relates to raw material pretreatment, in particular to a method for pretreatment of a 2-alkylanthraquinone working solution for producing hydrogen peroxide and a method for producing hydrogen peroxide. Background technique [0002] Hydrogen peroxide is an important green basic chemical with a high degree of industrial relevance. Since 2008, my country has become the largest producer of hydrogen peroxide, and the consumption in 2015 has exceeded 10 million t / a (according to 27.5%). At present, the production method of hydrogen peroxide is mainly the anthraquinone method, and 2-alkylanthraquinone (mainly including 2-ethylanthraquinone, 2-butylanthraquinone and 2-pentylanthraquinone) is used as the "carrier" of the process. ", which directly affects the quality and output of hydrogen peroxide. 2-Alkyl anthraquinone and mixed solvents (composed of non-polar solvents and polar solvents) are prepared in a certain proportion as a working solut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/023
CPCC01B15/023
Inventor 潘智勇郑博费建奇宗保宁
Owner CHINA PETROLEUM & CHEM CORP
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