Hydrogenation catalyst and preparation method and application thereof and hydrofining method
A hydrogenation catalyst and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem of low catalyst activity and achieve the effect of high hydrodesulfurization activity
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[0012] The invention provides a method for preparing a hydrogenation catalyst, the method comprising heat-treating a carrier loaded with a heteropoly complex with a VIB group metal as a coordination atom and a first compound, and loading the carrier on the heat-treated carrier The second compound; the first compound is a non-metallic oxo acid salt with a Group VIII metal as a cation, an anoxic acid salt with a Group VIII metal as a cation, and a non-metallic oxyacid with a second metal as a cation One or more of salts and anoxo-acid salts with a second metal as a cation, the second metal being one selected from the group consisting of Group IB metals, Group IIB metals, Group IIA metals and rare earth metals or more; the second compound is a non-metallic oxo acid salt with a Group VIII metal as a cation and / or an anoxo acid salt with a Group VIII metal as a cation.
[0013] In the present invention, the "non-metal oxo acid salt" refers to a salt formed from an acid ion containi...
Embodiment 1
[0076] This example is used to illustrate the hydrogenation catalyst and its preparation method according to the present invention.
[0077] Take by weighing 10000 grams of aluminum hydroxide powder (70% by weight on a dry basis, purchased from Sinopec Changling Catalyst Branch) and 1787 grams of silica sol (containing 25% by weight of silicon dioxide, purchased from Qingdao Ocean Chemical Factory), mix them with an extrusion The strip machine (manufacturer: South China University of Technology Science and Technology Industrial General Factory, model: F-26(Ⅲ)) extruded into clover-shaped strips with a circumscribed circle diameter of 1.4mm, then dried at 120°C for 10 hours, and dried in the air at 600°C Calcined for 3 hours to obtain carrier S1. The content of silicon oxide in support S1 was 6% by weight and that of aluminum oxide was 94% by weight.
[0078] Weigh 200 grams of carrier S1, impregnate the carrier S1 with 259 ml of an aqueous solution containing 18.2 grams of am...
Embodiment 2
[0081] This example is used to illustrate the hydrogenation catalyst and its preparation method according to the present invention.
[0082] Get 200 grams of the carrier S1 prepared in Example 1, impregnate 258 milliliters of an aqueous solution containing 22.3 grams of ammonium fluoride (analytical grade, purchased from Beijing Chemical Plant) for 2 hours, then dry at 120° C. for 4 hours, and in air at 480° C. Calcined for 3 hours to obtain fluorine-containing carrier S1-2.
[0083] The above-mentioned fluorine-containing carrier S1-2 was impregnated with 258 ml of an aqueous solution containing 77.55 g of phosphomolybdic acid, 0.38 g of zinc nitrate hexahydrate and 10.10 g of nickel nitrate hexahydrate for 2 hours, then dried at 140°C for 4 hours, and then dried at 300°C in air Calcined for 5 hours; then the above carrier was impregnated with 256 ml of an aqueous solution containing 9.82 g of ammonium citrate and 8.05 g of nickel nitrate hexahydrate for 3 hours, and then dri...
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