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

A working fluid, hydrogen peroxide technology, applied in the directions of peroxide/peroxyhydrate/peroxyacid/superoxide/ozone, chemical instruments and methods, chemical recovery, etc., to improve regeneration effect, prolong service life, The effect of reducing production costs

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

Therefore, in the industrial application of the regeneration process, the regenerant is replaced very frequently, and the consumption of the regenerant becomes an important aspect of the hydrogen peroxide production process.

Method used

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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The regeneration pressure is normal pressure, the regenerative bed is γ-alumina, the temperature of nitrogen is 65°C, nitrogen (Nm 3 / h) and the volume flow ratio of the post-treatment working fluid is 1:125, and the gas-liquid parallel flow (from bottom to top) of the material enters the regeneration bed for regeneration reaction. After treatment by this method, the total anthraquinone content of the working fluid was 138g / L, and the total degradation product content was 30g / L. The regeneration effect began to decline after 102 days of continuous operation, and the regeneration bed lost its regeneration effect after 115 days.

Embodiment 2

[0025] The regeneration pressure is normal pressure, the regenerative bed is γ-alumina, the temperature of argon is 78°C, and the argon (Nm 3 / h) and the volume flow ratio of the post-treatment working fluid is 1:13.3, and the gas-liquid counterflow of the material (argon from top to bottom, post-treatment working fluid from bottom to top) enters the regeneration bed for regeneration reaction. After being treated by this method, the total anthraquinone content of the working solution is 140g / L, and the total degradation product content is 28g / L. After 110 days of continuous operation, the regeneration effect began to decline, and after 125 days, the regeneration agent was inactivated.

Embodiment 3

[0027] The regeneration pressure is normal pressure, the regeneration bed is silicon dioxide, the temperature of nitrogen is 65°C, nitrogen (Nm 3 / h) and the volume flow ratio of the post-treatment working fluid is 1:66.7, and the gas-liquid parallel flow (from bottom to top) of the material enters the regeneration bed for regeneration reaction. After being treated by this method, the total anthraquinone content of the working solution was 142g / L, and the total degradation product content was 26g / L. The regeneration effect began to decline after 135 days of continuous operation, and after 153 days of regenerant life.

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Abstract

The invention discloses a regeneration process of operating fluid for producing hydrogen peroxide by an anthraquinone method, which comprises the following contents: in the presence of diluent gas, post-treatment operating fluid contacts with a regenerant for regeneration; the respective entering ways of the diluent gas and the post-treatment operating fluid into a regeneration bed are gas liquid cocurrent flow or gas liquid countercurrent flow. The method improves the contact regeneration effect of the post-treatment operating fluid with the regenerant, prolongs the service life of the regenerant of the operating fluid, and reduces the production cost.

Description

technical field [0001] The invention relates to a hydrogen peroxide production process, in particular to a working liquid regeneration process for producing hydrogen peroxide by 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, produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B15/023
CPCY02P20/584
Inventor 杨秀娜张英齐慧敏高景山
Owner CHINA PETROLEUM & CHEM CORP
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