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Regeneration method of operating fluid for producing hydrogen peroxide by anthraquinone method

A technology of hydrogen peroxide, working fluid, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, inorganic chemistry, etc.

Active Publication Date: 2014-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the hydrogen peroxide production process is a process of continuous circulation of the working fluid, if the degradation products of the working fluid are not effectively regenerated during each cycle, they will accumulate in the working fluid and increase continuously, affecting the extraction process, product quality and equipment. safe operation of

Method used

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  • Regeneration method of operating fluid for producing hydrogen peroxide by anthraquinone method

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Experimental program
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Effect test

Embodiment 1

[0021] Use alumina as the regeneration agent to vacuumize the regeneration bed. The regeneration conditions are as follows: the regeneration temperature is 65°C, the regeneration pressure is 50kPa, the residence time of the working fluid in the regeneration agent bed is 10 minutes, and the regeneration working fluid is in the regeneration bed. The dwell time is 12 minutes. The total anthraquinone content of the regenerated working solution was 137g / L, the total degradation product content was 30g / L, and the water content was 3mL / L. The regeneration effect began to decline after 75 days of continuous operation, and the regeneration agent lost its regeneration effect after 90 days.

Embodiment 2

[0023] Use alumina as the regeneration agent to vacuumize the regeneration bed. The regeneration conditions are as follows: the regeneration temperature is 70°C, the regeneration pressure is 20kPa, the residence time of the working fluid in the regeneration bed is 15 minutes, and the regeneration working fluid is in the upper part of the regeneration bed. The residence time was 18 minutes. The total anthraquinone content of the regenerated working solution was 144g / L, the total degradation product content was 26g / L, and the water content was 2.5 mL / L. The regeneration effect began to decline when the regeneration reaction was running for about 105 days, and the regeneration agent lost its regeneration effect after 120 days.

Embodiment 3

[0025] Use silicon dioxide as the regeneration agent to vacuumize the regeneration bed. The regeneration conditions are as follows: the regeneration temperature is 65°C, the regeneration pressure is 25kPa, the residence time of the working fluid in the regeneration bed is 20 minutes, and the regeneration working fluid is in the regeneration bed. The dwell time of the Ministry is 25. The total anthraquinone content of the regenerated working solution was 145g / L, the total degradation product content was 25g / L, and the water content was 1.6mL / L. The regeneration effect began to decline when the regeneration reaction was running for about 128 days, and the regeneration agent lost its regeneration effect after 145 days.

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Abstract

The invention discloses a regeneration method of operating fluid for producing hydrogen peroxide by an anthraquinone method, which comprises the following contents: post-treatment operating fluid enters a regeneration bed for regeneration; the top of the regeneration bed is connected with a vacuum-pumping device; and thus the regeneration bed operates at a negative pressure. The method of the invention is good in regeneration effect, prolongs the service life of regenerants, and reduces the production cost.

Description

technical field [0001] The invention relates to a working liquid regeneration method for producing hydrogen peroxide by an anthraquinone method. Background technique [0002] In hydrogen peroxide (H 2 o 2 In the production process of aqueous solution), the hydrogenation and oxidation processes are accompanied by chemical reactions. At the same time, some side reactions will also occur due to the inhomogeneity of the reaction process, resulting in some degradation products. The existence of these degradation products will increase the viscosity and density of the working fluid. and changes in surface tension. Since the hydrogen peroxide production process is a process of continuous circulation of the working fluid, if the degradation products of the working fluid are not effectively regenerated during each cycle, they will accumulate in the working fluid and increase continuously, affecting the extraction process, product quality and equipment. safe operation. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/023
Inventor 张英杨秀娜齐慧敏高景山
Owner CHINA PETROLEUM & CHEM CORP