Desulfurizing agent doped with oxygen-containing functional group, and preparation and application of the desulfurizing agent
A desulfurization agent and functional group technology, applied in the field of desulfurization agent doped with oxygen-containing functional groups, can solve the problems of low desulfurization efficiency, poor temperature window adaptability, low working sulfur capacity, etc. Value, the effect of low preparation cost
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[0043] The preparation method of desulfurizer provided by the invention comprises the following steps:
[0044] (1) Preparation of active component solution: According to the loading capacity of the desulfurizer, weigh the active component, dissolve it in deionized water, and stir well to obtain the active component solution. The mass concentration of the active component solution is 0.1-30 %; the active component is selected from one or more of sodium, potassium, magnesium, aluminum, nickel, iron sulfate or nitrate or hydroxide;
[0045] (2) Impregnation of active components: Weigh the activated carbon carrier, add the prepared active component solution according to the equal-volume impregnation method, stir for 10-30 hours, stir well, and then dry at 100-150°C for 5-20 hours to obtain Activated carbon impregnated with active components;
[0046] (3) Doping of oxygen-containing functional groups: Weigh the activated carbon impregnated with active components, and perform high...
Embodiment 1
[0051] The preparation method of desulfurizer in the present embodiment is as follows:
[0052] (1) Preparation of active component solution: 0.8 g of sodium hydroxide was weighed and dissolved in 50 mL of deionized water to prepare a mixed solution of sodium hydroxide and aluminum nitrate.
[0053] (2) Impregnation of active components: Weigh 10g of spherical biomass-based activated carbon with a diameter of 3×(8-10mm), add the prepared active component solution according to the NaOH loading capacity of 8wt%, impregnate for 15h, and dry at 120°C for 10h , to prepare activated carbon impregnated with active components.
[0054] (3) Doping of oxygen-containing functional groups: take activated carbon impregnated with active components, and use a tube furnace to perform high-temperature roasting. During this period, the gas after oxygen and nitrogen are mixed uniformly is introduced, and the oxygen content is kept at 5%. Volumetric space velocity 500h -1 , roasted at 350°C for...
Embodiment 2
[0061] The preparation method of desulfurizer in the present embodiment is as follows:
[0062] (1) Preparation of active component solution: Weigh 0.74g of magnesium nitrate and 0.21g of aluminum nitrate and dissolve them in 50mL of deionized water to prepare a mixed solution of magnesium nitrate and aluminum nitrate.
[0063] (2) Impregnation of active components: Weigh 10g of columnar coal-based activated carbon with a diameter of 4×(8~10)mm, 2 o 3 The loading amount is 0.5wt%, and the prepared active component solution is added, impregnated for 15 hours, and dried at 100° C. for 5 hours to prepare activated carbon impregnated with active components.
[0064] (3) Doping of oxygen-containing functional groups: take activated carbon impregnated with active components, and use a tube furnace to perform high-temperature roasting. During this period, the gas after oxygen and nitrogen are mixed uniformly is introduced, and the oxygen content is maintained at 10%. Volumetric spa...
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Abstract
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