Silica gel, desiccant silica gel, molecular sieve

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How to regenerate silica gel after absorbing water vapor?

After silica gel absorbing moisture, the moisture can be removed through thermal desorption . The heating methods are various, such as electrothermal furnace , flue waste heat heating and hot air drying, etc. The temperature of desorption heating is controlled between 120 ℃ and 180 ℃ . For blue gel indicator, allochroic silica gel and DL type blue silica gel, the temperature should be controlled between 100 ℃ and 120 ℃. During the regeneration of industrial silica gel of various kinds, the maximum temperature should not be higher than below limit: For coarse-pored silica gel, it should not be higher than 600 ℃; For fined-pored silica gel, it should not be higher than 200 ℃ ; For blue gel indicator (or allochroic silica gel), it should not be higher than 120 ℃ ; For alumino silica gel, it should not be higher than 350 ℃ . For silica gel after being regenerated, its moisture should be controlled below 2% for repeated operation. .