An alkali-promoting complex type desulfurization and dearsenication adsorbent and a preparation method thereof
A technology for desulfurization and arsenic removal, adsorbent, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of low carbonyl sulfide removal efficiency, high industrial application cost, low cost, etc. The effect of production cost and reduction of enterprise production cost
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Embodiment 1
[0038] Weigh 100g of χ-ρ type alumina with a specific surface area of 200m 2 / g~300m 2 / g, add 31.1g basic copper carbonate powder, add 4.5g sodium carboxymethyl cellulose, 0.5g scallop powder, stir well until evenly mixed. Add 100 mL of 1% sodium hydroxide (NaOH) solution into the mixture, add an appropriate amount of water and knead until well mixed. The mixture was extruded with a small extruder, aged in a closed oven for 6 hours, with a humidity of 90%, and a temperature of 80°C. The pellets were taken out and placed in a roasting furnace for activation at 350°C for 6 hours to obtain sample 1. Copper oxide in sample 1 accounts for 10% of the mass of the adsorbent, and sodium hydroxide accounts for 1% of the mass of the adsorbent.
Embodiment 2
[0040] Weigh the specific surface area as 200m 2 / g~300m 2 For 100g of γ-type alumina per gram, add 34.3g of copper nitrate powder, 2.5g of carboxymethyl cellulose, and 2.5g of scallop powder, and stir until fully mixed. Add 100 mL of 2.3% sodium hydroxide solution into the mixture, add an appropriate amount of water and knead until fully mixed. Extrude the mixture with a small extruder, put it in a closed oven for aging for 6 hours, humidity 100%, aging temperature 60°C, take out the pellets and put them in a roasting furnace for 8 hours at 400°C to obtain sample 2 . Copper oxide in sample 2 accounts for 10% of the mass of the adsorbent, and sodium hydroxide accounts for 2% of the mass of the adsorbent.
Embodiment 3
[0042] Weigh the specific surface area as 200m 2 / g~300m 2 For 100 g of χ-type alumina per gram, add 34.5 g of basic copper carbonate powder, add 5 g of sodium carboxymethyl cellulose, and stir until fully mixed. Add about 100ml of 5% sodium hydroxide solution into the mixture, add an appropriate amount of water and knead until fully mixed. Extrude the mixture with a small extruder, put it in a closed oven for aging for 8 hours, with a humidity of 90%, and an aging temperature of 70°C. Take out the pellets and put them in a roasting furnace for 8 hours of activation at a temperature of 450°C to obtain sample 3. . Copper oxide in sample 3 accounts for 10% of the mass of the adsorbent, and sodium hydroxide accounts for 5% of the mass of the adsorbent.
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