The issue of effective anthraquinones in hydrogen peroxide production
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This post was last edited by zfy_80522 on 2011-7-9 19:46. Maintaining an appropriate level of active anthraquinone in the working solution during hydrogen peroxide production is essential for reducing side reactions and ensuring stable operation; one of the important measures to take when the level of active anthraquinone in the working solution drops is to replenish it promptly. The current problem is that it is not possible to analyze all the degradation products present in the working solution, which makes it difficult to determine the appropriate amount and concentration of anthraquinone to add. If the amount of anthraquinone added is too small, the cycle for the effective level of anthraquinone in the system to increase is prolonged, which affects production output ； If too much is added, it increases the viscosity and specific gravity of the working fluid, significantly affecting the rates of hydrogenation and oxidation reactions. I was wondering if any colleagues have any practical experiences that I could learn from?
Common degradation products in the working solution, such as anthraquinones, hydroxyanthraquinones, and epoxides, can have their concentrations analyzed. Additionally, when the concentration of the components in the working solution decreases, in addition to adding more anthraquinones, it is also possible to increase the effective amount of anthraquinones by promptly replacing the clay bed or hydrogenation liquid clay bed used in the working solution. Of course, if conditions permit, the working solution can also be regenerated using alkali in a preparation tank.
It is possible to determine the amount of anthraquinone required to produce one ton of hydrogen peroxide under normal conditions, and then add that amount based on the quantity of hydrogen peroxide to be produced; alternatively, the required amount can be calculated using analytical data
Also, I would like to ask: what are the viscosity and specific gravity of a normal working fluid (with about 150 g/L of active anthraquinone)?
The viscosity should also vary depending on the ratio of H4EAQ to total anthraquinones, right?