Refined hydrogenation catalyst and its preparation method
A hydrogenation refining and catalyst technology, applied in refining to remove heteroatoms, etc., can solve the problems of catalyst aromatics saturation reduction, high liquid yield, catalyst deactivation, etc., achieve concentrated pore distribution, low preparation cost, and simple process Effect
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preparation example Construction
[0016] One of the specific preparation methods of the hydrogenation catalyst of the present invention comprises the following steps:
[0017] A. At room temperature to 90°C, mix the solution of the silicon-containing raw material and the titanium-containing raw material according to the required amount and stir for 1 to 3 hours;
[0018] B. Add water and solvent while stirring in the above-mentioned mixture solution to carry out hydrolysis polymerization, and the reaction time is 2 to 20 hours;
[0019] C. Aging and drying the wet gel obtained by hydrolytic polymerization at room temperature to 120°C;
[0020] D. Shaping the dried xerogel, then drying at normal temperature to 200°C for 0.5 to 24 hours, and then calcining at 400°C to 600°C for 0.5 to 6 hours to obtain a catalyst carrier without active metal;
[0021] E. Loading active components nickel and molybdenum on the carrier, drying at normal temperature to 200°C for 0.5 to 24 hours, and then calcining at 400°C to 600°C...
Embodiment 1
[0037] Catalyst E-1 prepared according to the method provided by the present invention.
[0038] Take 2.0 moles of ethyl orthosilicate and put it into a three-neck round bottom flask, add 0.2 moles of butyl titanate, stir at 35°C for 1 hour, then take the amount of ethyl orthosilicate as the basis, Distilled water was added in the ratio of ethyl ester: water = 1: 4 (mol / mol), and absolute ethanol was added in the ratio of ethyl orthosilicate: absolute ethanol = 1: 20 (mol / mol). Continue to stir until the mixed solution becomes viscous, and a white transparent wet gel is obtained. The wet gel is kept at 90°C for 24 hours to prepare a dry gel, which is crushed and mixed with the calculated amount of MoO 3 Mix the powder thoroughly, then add appropriate water to make it into a plastic paste, extrude it into a cylindrical strip of 1.5 mm, dry it at 100°C for 12 hours, and bake it at 550°C in air for 8 hours. A catalyst carrier is obtained.
[0039] The catalyst carrier obtained ...
Embodiment 2
[0041] Catalyst E-2 prepared according to the method provided by the present invention.
[0042] remove TiCl 4 To replace butyl titanate, based on the amount of ethyl orthosilicate, distilled water was added in the ratio of ethyl orthosilicate: water = 1:5 (mol / mol), and ethyl orthosilicate: absolute ethanol = Add absolute ethanol at a ratio of 1:5 (mol / mol), add nickel oxide during the molding process of the carrier, and the impregnation solution is a mixed solution of nickel nitrate and ammonium molybdate, and other preparation steps and preparation conditions are the same as in Example 1 , the number of the catalyst obtained is E-2. The composition and physical and chemical properties of catalyst E-2 are shown in Table 1, the properties of the raw oil used are shown in Table 2, the process conditions are shown in Table 3, and the evaluation results are shown in Table 4.
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Abstract
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