What is the fire hazard category of spent activated carbon that has absorbed some Class A gases?
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What is the fire hazard category of spent activated carbon that has absorbed some Class A gases? How much waste gas can one ton of activated carbon generally absorb? If the absorption is not significant, can it be considered as category C?
1) According to the explanations in GB50016-2014 (2018 edition), equipment or buildings used solely for processing coal, coke, wood, bamboo, rattan, etc., can be classified as Category C； 2) However, the fire hazard category of the equipment should also be determined based on the fire hazard category of the medium it processes, stores, or transports ； Activated carbon absorbs Class A gases, and during the desorption process gases are produced with an explosion limit of less than 10%; therefore, it should also be classified according to the strictest category ； Such activated carbon is classified as Category A for fire hazard. 3) The dynamic adsorption capacity of activated carbon is approximately 10–15% (10–15 kg/100 kg of activated carbon), but the exact value depends on the physicochemical properties of the adsorbate; this capacity is provided for reference only.