Hydrocarbon oil desulfurization catalyst and preparation method thereof, and hydrocarbon oil desulfurization method
A desulfurization catalyst and hydrocarbon oil technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as poor wear resistance, unstable structure, and low desulfurization activity, and achieve the goal of using Long life, good wear resistance, low catalyst loss effect
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[0031] The present invention also provides a preparation method of the hydrocarbon oil desulfurization catalyst of the present invention, the method comprising: (1) mixing a titanium dioxide binder, water and an acidic liquid to obtain a titanium sol; (2) nitrogenating the titanium sol, Silicon, at least one metal oxide selected from IIB, VB and VIB group elements, and water are mixed, and the mixed carrier slurry is formed, first dried, and first calcined to obtain a carrier; (3) in the carrier Introducing the precursor of the metal promoter into the process, followed by the second drying and the second roasting to obtain the catalyst precursor; (4) reducing the catalyst precursor in a hydrogen atmosphere to obtain the hydrocarbon oil desulfurization catalyst.
[0032] In the preparation method step (2) of the hydrocarbon oil desulfurization catalyst provided by the present invention, the addition of the metal oxide may be in the form of powder of the metal oxide, or the metal...
Embodiment 1
[0058] This example is used to illustrate the method for preparing a hydrocarbon oil desulfurization catalyst of the present invention.
[0059] (1) Prepare the carrier. 3.25kg of titanium tetrachloride (Beijing Chemical Plant, analytically pure, 99% by weight) was slowly added to 4.6kg of 5% by weight of dilute hydrochloric acid, stirred slowly to avoid the precipitation of titanium oxide crystals, and obtained a light yellow transparent titanium sol pH=2.0 ;
[0060]4.43kg of zinc oxide powder (Headhorse company, purity 99.7% by weight), 2.40kg of silicon nitride (purity>99.0% by weight, Qinhuangdao Yinuo High-tech Material Development Co., Ltd.) and 6.57kg of deionized water were mixed and stirred for 30 Minutes later, a mixed slurry of zinc oxide and silicon nitride was obtained; then the above-mentioned titanium sol was added, mixed and stirred for 1 hour to obtain a carrier slurry;
[0061] The carrier slurry is used NiroBowenNozzleTower TM The model spray dryer is us...
Embodiment 2
[0066] This example is used to illustrate the method for preparing a hydrocarbon oil desulfurization catalyst of the present invention.
[0067] Get 1.25kg of titanium dioxide (anatase type, containing 1.17kg on a dry basis) and add it to 1.8kg of deionized water and 1.0kg of 30% by weight hydrochloric acid (chemically pure, produced by Beijing Chemical Plant), pH=1.9, and stir to react 1h, a light yellow transparent titanium sol was obtained;
[0068] Mix 1.80 kg of silicon nitride, 5.52 kg of zinc oxide powder and 10.0 kg of deionized water under stirring to obtain a mixed slurry of zinc oxide and silicon nitride, then add the above titanium sol and stir for 1 h to obtain a carrier slurry;
[0069] Referring to the method of Example 1, the carrier slurry was spray-dried and shaped, and the active component nickel was introduced, and the hydrocarbon oil desulfurization catalyst A2 was obtained after reduction.
[0070] The chemical composition of A2 is: the content of zinc o...
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