Zibo XiangRun Environment Engineering Co., Ltd.Activated alumina is used in the hydrogenation solution regeneration bed and clay bed in the hydrogen peroxide production process. The role of the hydrogenation solution regeneration bed is to regenerate the anthraquinone degradation products in the hydrogenation solution. The role played in the clay bed is that the regeneration may be generated. The anthraquinone degradation product and the potassium carbonate solution droplets in the adsorption working fluid.
The role of activated alumina
1. Absorb lye.
2. Absorb water
3. Decompose hydrogen peroxide.
4. Regenerate degradation products.
5. Filter impurities.
6. Purify hydrogen peroxide.
Factors affecting the regeneration capacity of activated alumina
1. The performance of activated alumina.
2. Operating conditions of activated alumina.
3. The structure of the activated alumina bed.
Replacement of activated alumina
When the working fluid passes through the activated alumina, the effective anthraquinone content remains basically unchanged. In order to maintain the stability of the working fluid components, when the amount of supplementary anthraquinone added to the system increases significantly, it indicates the energy of its regeneration degradation products.
If the force drops, the activated alumina should be replaced. Generally, the white clay bed is connected in parallel with two beds. When the relevant indicators cannot meet the production requirements after a certain period of use, the white clay bed should be switched in time to replace the activated alumina.
1. Treatment of spent activated alumina. After the clay bed exits the working fluid, there is still a lot of working fluid adsorbed in the activated alumina micropores, which need to be purged with steam from top to bottom. Usually, 1 000 kg live
The alumina can absorb about 400 kg of working fluid. After the ineffective activated alumina is blown dry, it is discharged out of the clay bed, and by observing the color change, crushing, and agglomeration, it can be judged whether there is any in the process of use.
Bias current, whether the alkali is serious, etc.
2. The filling of activated alumina. After unloading the invalid activated alumina, there are a lot of alumina powder attached to the inner wall of the clay bed, the wire mesh, and the porcelain ball.
fill. If there is a lot of activated alumina dust, it must be screened first to remove the dust. When filling, the edge of the stainless steel wire mesh is tightly attached to the wall of the white clay bed without leaving a gap, and is pressed tightly with ceramic balls. Filled
The white clay bed needs to be purged with a large amount of nitrogen, and can be put into use after the dust is removed. Otherwise, once a large amount of dust is brought into other processes by the working fluid, it will have an adverse effect on the system. In addition, white clay
The steam pipe on the top of the bed should be provided with a blind plate before the white clay bed is put into use to prevent the steam condensate from flowing into the activated alumina layer and affecting the activity.
