METHOD TO REGENERATE CARBON-BASED CHEMICAL ADSORBENT-CATALYST Russian patent published in 2011 - IPC B01J38/08 B01J21/18 B01J21/20 B01J20/00 C01B31/08 

FIELD: technological processes.

SUBSTANCE: invention relates to sorption equipment and may be used to restore protective properties of chemical adsorbents-catalysts and filtering-absorbing canisters equipped with them that have expired shelf life. A method is described to regenerate a carbon-based sorbent-catalyst that lost activity during storage, including treatment with a chemical reagent containing ammonia, and further thermal treatment, where a reagent is an ammonium-air mixture with ammonia concentration (40±5) vol.%, which for (15±1)s is passed through a layer of a chemical adsorbent-catalyst arranged in an equipped filtering-absorbing canister, at the temperature of (22±3)°C and flow of (30±1.5) dm³/min with subsequent soaking for (5-6) min and thermal treatment for (5-6) min, by air heated up to (150±5)°C and flow of (200±20) dm³/min. (40±5) vol.%, which for (15±1)s is passed through a layer of a chemical adsorbent-catalyst arranged in an equipped filtering-absorbing canister, at the temperature of (22±3)°C and flow of (30±1.5) dm³/min with subsequent soaking for (5-6) min and thermal treatment for (5-6) min, by air heated up to (150±5)°C and flow of (200±20) dm³/min.

EFFECT: restoration of protective properties of a chemical adsorbent-catalyst in composition of filtering-absorbing canisters with expired shelf life without their disassembly.

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