Please discuss whether hydrotreated clay in hydrogen peroxide production is a degradation product of rehydrotreated liquid or a degradation product of oxidized liquid
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I’ve seen several experts on hydrogen peroxide point out that the hydride solution-activated clay bed is used for the regenerative oxidation of degradation products, while the regenerated clay bed is used to degrade those hydride solution degradation products. In my own production experience, I had always assumed that the hydride solution-activated clay bed was used to regenerate hydride solution degradation products; it seems a bit incorrect to me. I would appreciate it if my colleagues could share their opinions.
The oxidative degradation of anthraquinones in the working solution is relatively simple, with epianthraquinone as the only product. Epianthraquinone can be easily regenerated during the H2O2 production process. Studies have shown that basic activated alumina can convert epianthraquinone back into H4EAQ, and this regeneration takes place in a hydrogenated clay bed. The possible mechanism for regeneration is as follows: Epianthraquinone + H4EAQ → 2H4EAQ + H2O (regeneration by Al2O3). The hydrogenation degradation reaction is a very complex composite reaction; the two types of degradation reactions, namely the nuclear hydrogenation of aromatic rings and the hydrogenolysis of carbonyl groups, can occur sequentially. In the steps of regenerating active alumina and purifying with potassium carbonate, the stability of the working fluid system can be maintained by regenerating and separating the degradation products.
Hello, so it seems that your opinion is the same as well: hydrogenation degradation takes place in a regenerated clay bed, while oxidation degradation occurs in a hydrogenated clay bed.
Logically, the degradation product of the oxidation tower, epoxynaphthoquinone, is generated within that tower. The liquid coming out of the oxidation tower should first be sent to a drying tower and a regenerated clay bed. If regeneration takes place in a hydrogenated clay bed, then epoxynaphthoquinone will not be regenerated after passing through the drying tower and the regenerated clay bed, unless only a small amount remains. The degradation of epoxynaphthoquinone can be reversed only in the presence of hydrogen.
The hydrogenated clay bed is for the degradation of regenerated oxidized liquid
In line with the view from the second floor, it should be regenerated under hydrogen conditions.
Recent studies have found that the degradation product of the oxidizing solution, epoxyanthraquinone, can be converted back into H4EAQ by basic activated alumina in the presence of hydrogen anthraquinone and hydrogen gas.
I share the same understanding as the original poster. According to the experts in the forum, I’m not entirely sure how that post-treatment clay bed is degraded and regenerated... I’ll take another look...
I would like to ask whether the epoxy compounds generated by the degradation of oxidizing agents could cause a decrease in H4EAQ and an increase in EAQ? Will it cause an increase or a decrease in the viscosity of the working fluid?
I on the 10th floor feel the same way; I hope fellow sailors can offer some advice
The degradation products in the oxidation solution are mainly epoxyanthraquinones. Under alkaline conditions, in the presence of hydrogen, hydrogen reacts with the epoxyanthraquinones (active alumina), displacing the oxygen from the epoxyanthraquinones and thereby enabling their regeneration.