Cleaning method for filter core used for hydrogen peroxide production process
A production process, hydrogen peroxide technology, applied in separation methods, chemical instruments and methods, filtration and separation, etc., can solve the problems of long time, affecting production and operation, and achieve the effect of simple equipment, flexible maintenance plan and arrangement, and cost saving.
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[0013] Example 1
[0014] Such as figure 1 Said, a method for cleaning the filter element used in the hydrogen peroxide production process, the filter element is first immersed in the solvent benzene for 1 hour, then placed in lye, ie, NaOH with a mass concentration of 3%, for 0.5 h, and then placed in an acid solution, ie, the mass 2% HNO 3 Neutralize and rinse 3 times in deionized water.
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[0015] Example 2
[0016] A method for cleaning the filter element used in the hydrogen peroxide production process. The filter element is first immersed in the solvent benzene for 2 hours, then placed in lye, ie, NaOH with a mass concentration of 10%, for 2 hours, and then placed in an acid solution, ie, the mass concentration is 8%. HNO 3 Neutralize, then once again soak in solvent benzene for 2h, then wash in lye, that is, NaOH with a mass concentration of 10%, for 2h, and then place in acid solution, that is, HNO with a mass concentration of 8% 3 Neutralize, circulate twice, and rinse 5 times in deionized water.
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[0017] Example 3
[0018] Such as figure 1 Said, a method for cleaning the filter element used in the hydrogen peroxide production process, the filter element is first immersed in the solvent trimethylbenzene for 1.5 hours, and then placed in lye, ie, NaOH with a mass concentration of 5%, for 1 hour, and then placed in an acid solution. HNO with a mass concentration of 5% 3 Neutralize, cycle three times in sequence, and rinse with deionized water for four times.
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