Adsorptive desulfurization adsorbent and preparation method thereof
An adsorption desulfurization and adsorbent technology, applied in chemical instruments and methods, refined hydrocarbon oil, other chemical processes, etc., can solve the problems of inability to improve gasoline octane number, gasoline octane number loss, etc., and achieve excellent adsorption desulfurization performance, The effect of reducing the freezing point and improving the desulfurization effect
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[0029] In the preparation step (a) of the adsorbent composition provided by the present invention, the zinc oxide source used may be one or more zinc compounds that exist in the form of zinc oxide or can be converted into zinc oxide under the preparation conditions herein. Examples of such zinc compounds include, but are not limited to, one or more of zinc sulfide, zinc sulfate, zinc hydroxide, zinc chloride, zinc carbonate, zinc acetate and zinc nitrate. The selected zinc oxide is preferably powdered zinc oxide.
[0030] In the preparation step (a) of the adsorbent composition provided by the present invention, the silicon oxide source used may be in the form of silicon oxide or in the form of one or more silicon-containing compounds that can be converted into silicon oxide. Any suitable type of silica can be used in the adsorbent composition of the present invention, such as one or more of diatomaceous earth, colloidal silica, silica gel, siliceous rock and precipitated sili...
Embodiment 1
[0042] 6.2 kg of diatomaceous earth (SiO 2 Content 87.6% by weight, Qingdao Samsung Diatomite Co., Ltd. product), 15.3 kg of zinc oxide (ZnO content 99.8% by weight, Zibo Haishun Zinc Industry Co., Ltd. product) and 3.1 kg of SAPO-11 (Si: Al: P=1: 9:10, molar ratio, the same below) molecular sieves were put into a grinder and ground for 15 minutes to form a mixture, the mixture was mixed with deionized water for beating to obtain a slurry with a solid content of 30% by weight, and then 14.6 kg of aluminum sol was added (Alumina content is 21.2% by weight, product of Sinopec Catalyst Qilu Branch Company), with a concentration of 31% by weight of hydrochloric acid to adjust the pH value to 3, then stirred at 75°C for 2.5 hours, cooled to 60°C, spray-dried and formed, 150 After drying for 4 hours at 650° C., calcined at 650° C. for 2 hours to obtain carrier particles with a particle size of 40-200 μm, which are designated as carrier particles A. 15.3 kilograms of cobalt nitrate ...
Embodiment 2
[0045] Using diatomite, aluminum sol, zinc hydroxide, CoAPO-11 (Co: Al: P = 1: 5: 5) and cobalt nitrate as raw materials, the ratio of the components of the obtained adsorbent composition is SiO 2 :Al 2 o 3 :ZnO:CoAPO-11:Co=10:2:8:5:3. (weight ratio, the same below)
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