Nickel-based adsorbent for deep desulfurization and deodorization of isopropanol and its preparation method and application
A deep desulfurization and adsorbent technology, applied in chemical instruments and methods, other chemical processes, separation/purification of hydroxyl compounds, etc., can solve the problem of not meeting the requirements of deep desulfurization and deodorization of isopropanol Desulfurization and deodorization catalysts, only focus on deodorization effects and other issues, achieve good application prospects, simple preparation process, and easy industrialization
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[0058] The preparation method of the normal-temperature high-efficiency nickel-based adsorbent for isopropanol deep desulfurization and deodorization of the present invention comprises the following steps:
[0059] (1) Melting, granulating or forming of metal alloys;
[0060] (2) Activation treatment of the metal alloy particles using an alkaline solution;
[0061] (3) washing the activated metal alloy particles with deionized water;
[0062] (4) Optionally, impregnating and modifying the washed metal alloy particles with an auxiliary water-soluble salt;
[0063] (5) Optionally, the particles obtained in the step (4) are washed with deionized water to obtain a granular nickel-based adsorbent.
[0064] In a preferred embodiment, the smelting of the metal alloy and the preparation of the particles in step (1) include: smelting of metal nickel, aluminum or additives, crushing to a certain particle for use or casting to a certain shape, or crushing The powder form is then forme...
Embodiment 1
[0079] Accurately weigh 500 grams of nickel with a purity greater than 99% and 500 grams of aluminum with a purity greater than 99%, put it in an intermediate frequency furnace for melting at 1650°C for 1 hour, pour it into a mold, cool it naturally, and crush it with a jaw The machine is crushed and sieved to obtain 3-6mm particles.
[0080] Then, the composition is Ni 50 al 50 200g of the metal alloy particles are placed in a quartz glass tube with an internal diameter of 50mm. The NaOH alkali solution with a concentration of 0.8% by weight flows from the bottom of the quartz glass tube at a rate of 5L / hour through the metal alloy particle bed and then flows out from the top. The gravimetric space velocity of NaOH alkali solution is 25 hours -1 . The bed temperature is 30° C., and the activation treatment time is 4 hours. After the alkaline solution activation treatment, washing is performed with deionized water at 50° C. until the pH of the solution after washing is 7-9...
Embodiment 2
[0082] Accurately weigh 450 grams of nickel with a purity greater than 99%, 500 grams of aluminum with a purity greater than 99%, and 50 grams of iron with a purity greater than 99%, melt them in an intermediate frequency furnace at 1600°C for 1.5 hours, and pour them out into the mold After natural cooling in the furnace, the alloy powder with a particle size of less than 150 mesh is obtained through a jaw crusher and a ball mill, and then water, pseudo-boehmite, binder, and graphite are added, and after being sliced, dried and roasted by a tablet machine Cylindrical pellets with a diameter of 3 mm and a height of 3 mm were obtained.
[0083] Then, the composition is Ni 45 al 50 Fe 5 200g of metal alloy particles, placed in a quartz glass tube with an internal diameter of 50mm, the concentration of 1.0% by weight KOH alkali solution flows from the bottom of the quartz glass tube through the metal alloy particle bed at a rate of 5L / hour and then flows out from the top, NaOH ...
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