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Regarding the replacement of ceramic balls in the disproportionation clay column of aromatic hydrocarbon plants

2021-10-31View Original

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How often on average should the ceramic balls used for support at the bottom of the disproportionation clay column in aromatic hydrocarbon plants be replaced? Could anyone please help analyze what frequency would be more reasonable? Our company’s disproportionation units use ordinary granular clay, and the ceramic balls have not been replaced for many years. Currently, the internal inspection cycle for pressure vessels is every 5 years, while the external inspection cycle is every 3 years; however, there is controversy regarding the replacement cycle for these ceramic balls. Please share your opinions. Thank you

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