Method for regenerating working fluid during production of hydrogen peroxide by anthraquinone process
A hydrogen peroxide, working fluid technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozone oxide, chemical recovery, etc., can solve the regeneration efficiency of circulating working fluid lower problem
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Embodiment 1
[0097] (1) Preparation of the first catalyst
[0098] Mn(NO 3 ) 2 Dissolve in water to prepare 100mL impregnation solution. In the immersion solution, Mn(NO 3 ) 2 The concentration is 6mM. 50g of alumina (purchased from Bailingwei, product number 13-0750) was added to the above impregnation solution, and stirred at a temperature of 60°C for 8h. Then, the impregnated mixture was dried under normal pressure at 130° C. for 4 hours, followed by calcination at 600° C. for 4 hours, thereby obtaining the first catalyst according to the present invention (the composition is listed in Table 1).
[0099] (2) Preparation of desiccant
[0100] 50 g of desiccant (purchased from Bailingwei product number: LC4005) was dried under normal pressure at 130° C. for 4 hours to obtain the desiccant used in the present invention.
[0101] (3) Preparation of the second catalyst
[0102] Mg(NO 3 ) 2 Dissolve in water to prepare 100mL impregnation solution. In the immersion solution, Mg(NO ...
Embodiment 2
[0127] The difference between this embodiment and Example 1 is that the catalyst packed in the third miniature fixed-bed reactor is prepared by the following method: Mn(NO 3 ) 2 and Mg(NO 3 ) 2 Dissolve in water to prepare 100mL impregnation solution. In the immersion solution, Mn(NO3) 2 The concentration is 10mM, Mg(NO 3 ) 2 The concentration is 20mM. 50g of alumina (purchased from Bailingwei, product number 13-0750) was added to the above impregnation solution, and stirred at a temperature of 60°C for 8h. Then, the impregnated mixture was dried under normal pressure at 130° C. for 4 hours, followed by calcining at 600° C. for 4 hours, thereby obtaining the second catalyst according to the present invention (the composition is listed in Table 1). The experimental results are listed in Table 1.
Embodiment 3
[0129]The difference between this embodiment and Example 1 is that the reaction conditions of the first miniature fixed-bed reactor are different from Example 1 (but the reaction conditions of the third miniature fixed-bed reactor are identical with Example 1): the first miniature fixed-bed The temperature in the middle catalyst bed was controlled at 60°C. The experimental results are listed in Table 1.
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