A method for regenerating circulating working fluid in the process of producing hydrogen peroxide by anthraquinone method and a method for producing hydrogen peroxide

A technology of hydrogen peroxide and circulating work, applied in the direction of peroxide/peroxy hydrate/peroxyacid/superoxide/ozonide, chemical instruments and methods, chemical recovery, etc., can solve the regeneration efficiency of circulating working fluid Low-level problems, to achieve the effect of improving recycling efficiency, reducing cumulative content, and high conversion rate

Active Publication Date: 2018-07-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the technical problem of low regeneration efficiency of the circulating working fluid in the existing process of producing hydrogen peroxide by the anthraquinone method, and provide a method for regenerating the circulating working fluid in the process of producing hydrogen peroxide by the anthraquinone method , this method can convert anthrone-type compounds in the working fluid into anthraquinone-type compounds with higher regeneration efficiency

Method used

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  • A method for regenerating circulating working fluid in the process of producing hydrogen peroxide by anthraquinone method and a method for producing hydrogen peroxide
  • A method for regenerating circulating working fluid in the process of producing hydrogen peroxide by anthraquinone method and a method for producing hydrogen peroxide
  • A method for regenerating circulating working fluid in the process of producing hydrogen peroxide by anthraquinone method and a method for producing hydrogen peroxide

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Experimental program
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Effect test

Embodiment 1

[0089] (1) Preparation of the first catalyst

[0090] Mn(NO 3 ) 2 Dissolve in water to prepare 50mL impregnation solution. In the immersion solution, Mn(NO 3 ) 2 The content is 2g. 50g of alumina (purchased from Bailingwei, product number 13-0750) was added to the above impregnation solution, and saturated with stirring at a temperature of 60°C for 8h. Then, the impregnated mixture was dried under normal pressure at 130° C. for 4 hours, followed by calcination at 600° C. for 4 hours, thereby obtaining the first catalyst according to the present invention (the composition is listed in Table 1).

[0091] (2) Preparation of the second catalyst

[0092] Mg(NO 3 ) 2 Dissolve in water to prepare 50mL impregnation solution. In the immersion solution, Mg(NO 3 ) 2 The content is 5.6g. 50g of alumina (purchased from Bailingwei, product number 13-0750) was added to the above impregnation solution, and saturated with stirring at a temperature of 60°C for 8h. Then, the impregn...

Embodiment 2

[0118] The difference between this embodiment and Example 1 is that the catalyst packed in the second miniature fixed-bed reactor is prepared by the following method: Mn(NO 3 ) 2 and Mg(NO 3 ) 2 Dissolve in water to prepare 50mL impregnation solution. In the immersion solution, Mn(NO 3 ) 2 The content is 1.9g, Mg(NO 3 ) 2 The content is 2.8g. 50g of alumina (purchased from Bailingwei, product number 13-0750) was added to the above impregnation solution, and saturated with stirring at a temperature of 60°C for 8h. Then, the impregnated mixture was dried under normal pressure at 130° C. for 4 hours, followed by calcining at 600° C. for 4 hours, thereby obtaining the second catalyst according to the present invention (the composition is listed in Table 1). The experimental results are listed in Table 1.

Embodiment 3

[0120] The difference between this embodiment and Example 1 is that the reaction conditions of the first miniature fixed-bed reactor are different from Example 1 (but the reaction conditions of the second miniature fixed-bed reactor are identical with Example 1): the first miniature fixed-bed The temperature in the middle catalyst bed was controlled at 60°C. The experimental results are listed in Table 1.

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Abstract

The invention discloses a regeneration method of circulating operating fluid in a production process of hydrogen peroxide by an anthraquinone method. The method comprises the following steps: the circulating operating fluid and a first catalyst are contacted, in order to obtain first contact liquid with reduced content of hydrogen peroxide; the first contact liquid and a second catalyst are contacted, in order to obtain regenerated operating fluid with reduced content of anthrone type compounds. The invention also discloses a method for producing hydrogen peroxide, and the method comprises the following steps: raffinate obtained in an extraction step is regenerated by the regeneration method, and the regenerated operating fluid is obtained. The circulating operating fluid in the production process of hydrogen peroxide by the anthraquinone method is regenerated by the method, in order to obtain higher conversion rate of anthrone type compounds, effectively reduce accumulated content of anthrone type compounds in the circulating operating fluid, and improve cyclic utilization efficiency of the operating fluid.

Description

technical field [0001] The invention relates to the technical field of hydrogen peroxide production, more specifically, the invention relates to the technical field of regeneration of working fluid in the process of producing hydrogen peroxide by anthraquinone method. Background technique [0002] Hydrogen peroxide (its aqueous solution is called hydrogen peroxide), the molecular formula is H 2 o 2 , is a strong oxidant that can be mixed with water in any ratio. h 2 o 2 In addition to being widely used in the three major fields of bleaching, chemical synthesis and environmental protection, there are also more and more applications in the fields of food, medicine and hygiene, and the electronics industry. Especially with the development of titanium-silicon molecular sieve catalysts, H 2 o 2 As a green oxidant, it has been widely used in the synthesis of many petrochemical products, such as propylene oxide, quinone, caprolactam, benzaldehyde and phenylacetaldehyde. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/023
CPCY02P20/584
Inventor 王伟建潘智勇郑博高国华杨克勇慕旭宏宗保宁
Owner CHINA PETROLEUM & CHEM CORP
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