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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 the effect of sulfur content

Active Publication Date: 2021-12-17
CHINA PETROLEUM & CHEM CORP +1
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  • Description
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AI Technical Summary

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

Examples

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specific Embodiment approach

[0026]According to the present invention, except that the composition of the adsorbent is selected according to the present invention, the preparation method of the adsorbent can refer to conventional methods in the art. For example, any one of impregnation method, precipitation method, blending method, ion exchange method, roll coating method and spray coating method can be used to introduce the transition metal active component onto the carrier. Preferably, the present invention adopts an impregnation method to prepare the adsorbent. The present invention has no special requirements for the impregnation method, and can be various impregnation methods in the prior art, such as selecting a dry impregnation method (i.e. equal volume impregnation method). Preparation, can also choose such as incipient wetness impregnation method for impregnation preparation. According to a specific embodiment of the present invention, the preparation method of the adsorbent includes: contacting ...

preparation example 1

[0071] This preparation example is used to illustrate the preparation of the adsorbent.

[0072] Take 100 grams of gamma alumina carrier, impregnate the carrier with 60 ml of an aqueous solution containing 23.61 grams of silver nitrate for 24 hours, filter, dry the solid at 120°C for 6 hours, and roast at 500°C for 4 hours to prepare adsorbent C 1 . The composition of the adsorbent is shown in Table 1.

preparation example 2

[0074] This preparation example is used to illustrate the preparation of the adsorbent.

[0075] The adsorbent was prepared according to the method of Preparation Example 1, except that the carrier was impregnated with 60 milliliters of an aqueous solution containing 39.35 grams of silver nitrate for 24 hours to obtain adsorbent C 2 . The composition of the adsorbent is shown in Table 1.

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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 liquid and a method for producing hydrogen peroxide, wherein the method comprises: using the 2-alkylanthraquinone to work The adsorption desulfurization is carried out by contacting the liquid with an adsorbent, and the adsorbent contains a carrier and a metal active component loaded on the carrier. 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 郑博潘智勇唐晓津宗保宁刘铮胡立峰朱振兴毛俊义
Owner CHINA PETROLEUM & CHEM CORP
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