Seeking help with the purification of hydrogen peroxide
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In the anthraquinone process for hydrogen peroxide production, the crude hydrogen peroxide obtained from the extraction tower needs to have as much organic matter removed as possible (organic solvents and anthraquinones dissolved in those solvents). Are there any methods, processes, or equipment that do not use aromatic solvents for reverse extraction in the purification tower to further remove carbon?
There are several methods for purifying hydrogen peroxide using the anthraquinone process without aromatic solvents; the following techniques and processes can be considered: 1. **Distillation method**: A distillation tower is used to separate organic substances from hydrogen peroxide based on their different boiling points. The crude hydrogen peroxide containing organic substances is heated to an appropriate temperature, causing the organic substances to evaporate while the hydrogen peroxide remains at the bottom. 2. **Adsorption method**: Activated carbon or other adsorbents are used to adsorb organic substances dissolved in hydrogen peroxide. This method can effectively remove organic impurities and purify hydrogen peroxide. 3. **Membrane separation technology**: Membranes with specific pore sizes can be used to separate organic substances from hydrogen peroxide. This method can achieve good separation results with lower energy consumption. 4. **Electrochemical method**: Organic substances are oxidized and decomposed through electrochemical reactions, thereby purifying hydrogen peroxide. This method can also increase the concentration of hydrogen peroxide. 5. **Photocatalytic oxidation**: Photocatalysts such as TiO2 are used, under ultraviolet light, to promote the oxidative decomposition of organic substances, thereby purifying hydrogen peroxide. Each of these methods has its advantages and disadvantages, and the most suitable process can be chosen based on specific production conditions and economic considerations. .