Preparation method of sulfurizing porous nanometer material for high-efficiency hydrargyrum removal
A nano-material and sulfur-loaded technology, applied in the chemical field, can solve the problem of inability to fully utilize the high specific surface area and porosity utilization of activated carbon, the limitation of mercury removal capacity and reaction rate, the limited mercury removal capacity and mercury removal reaction activity, etc. problems, to achieve the best mercury removal effect, high mercury removal activity and capacity, and low cost
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Embodiment 1
[0019] Weigh 30g of activated carbon and 12g of elemental sulfur, mix them evenly, add a certain amount of dry ice, place them in a closed pressure vessel, heat them to a supercritical state at 80°C and keep them for 4 hours, and then empty the carbon dioxide after cooling to room temperature to obtain sulfur-loaded activated carbon , the sulfur loading is 25.2%.
Embodiment 2
[0021] Weigh 30g of activated carbon and 12g of elemental sulfur, mix them evenly, place them in a pressure vessel and inject a certain amount of liquid carbon dioxide, heat the vessel to a supercritical state at 80°C and keep it for 5 hours, and then drain the carbon dioxide after cooling to room temperature. The sulfur-loaded activated carbon was obtained, and the sulfur-loaded amount was 25.5%.
Embodiment 3
[0023] Weigh 30g of activated carbon and 12g of elemental sulfur, mix them uniformly, place them in a pressure vessel and inject supercritical carbon dioxide at 80°C, after sealing the container, keep the temperature at 80°C for about 8 hours, and empty the carbon dioxide after cooling to room temperature to obtain Mercury activated carbon with a sulfur loading of 25.7%.
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