Vulcanization type hydrogenation catalyst and preparation method thereof, and gasoline hydrodesulfurization method
A hydrogenation catalyst and vulcanization-type technology, applied in physical/chemical process catalysts, chemical instruments and methods, and hydrocarbon oil treatment, can solve problems such as poor selectivity, low sweetening activity, and harsh reaction conditions, and achieve effective removal Effect
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[0034] The present invention also provides a method for preparing a sulfided hydrogenation catalyst, the method comprising:
[0035] (1) The carrier is impregnated with a solution containing the precursor of the active metal component A and the precursor of the active metal component B, the active metal component A is selected from the group VIII metal elements, and the active metal component B is selected from the group VIB group metal elements;
[0036] (2) Vulcanize the solid material obtained after immersion in step (1);
[0037] Among them, based on the respective metal elements, the molar ratio of the precursor of the active metal component A to the precursor of the active metal component B is 0.6-2.3:1;
[0038] The precursor of the active metal component B is ammonium thioate.
[0039] The selection of the active metal component A, the active metal component B and the carrier of the present invention is as described above, and will not be repeated here.
[0040] In the present i...
Example Embodiment
[0073] Example 1
[0074] (1) Weigh 25.4g of ammonium thiomolybdate, add deionized water to prepare 110mL of aqueous solution, impregnate 100g of carrier with this solution for 6h, and then vacuum dry at 120℃ for 4h to obtain Mo / Al 2 O 3 ;
[0075] (2) Weigh 22.1g of cobalt nitrate and 21.55g of EDTA, add deionized water to make 80mL solution, and impregnate Mo / Al 2 O 3 6h, then vacuum drying at 120℃ for 4h to obtain oxidation state CoMo / Al 2 O 3 ;
[0076] (3) For oxidation state CoMo / Al 2 O 3 For wet vulcanization, the specific conditions include: in the presence of hydrogen, the oxidation state of CoMo / Al 2 O 3 Contact reaction with cyclohexane containing 5 wt% carbon disulfide at 300°C and 2.4 MPa for 6 hours, and hydrogen volumetric space velocity of 1600 hours -1 , The volume ratio of hydrogen to oil is 400, and when the reaction temperature drops to room temperature, a sulfurized hydrogenation catalyst S-1 is obtained.
[0077] The component content of the sulfurized hydrogenat...
Example Embodiment
[0078] Example 2
[0079] (1) Weigh 31.8g of ammonium thiomolybdate, add deionized water to prepare 110mL of aqueous solution, impregnate 100g of carrier with this solution for 6h, and then vacuum dry at 120℃ for 4h to obtain Mo / Al 2 O 3 ;
[0080] (2) Weigh 22.1g cobalt nitrate and 14.2g citric acid, add deionized water to make 80mL solution, and immerse Mo / Al 2 O 3 6h, then vacuum drying at 120℃ for 4h to obtain oxidation state CoMo / Al 2 O 3 ;
[0081] (3) For oxidation state CoMo / Al 2 O 3 For wet vulcanization, the specific conditions include: in the presence of hydrogen, the oxidation state of CoMo / Al 2 O 3 Contact reaction with straight-run gasoline distillate oil containing 3% by weight of carbon disulfide at 320°C and 3.2MPa for 10h, and hydrogen volumetric space velocity of 600h -1 , The volume ratio of hydrogen to oil is 300, and when the reaction temperature is lowered to room temperature, a sulfurized hydrogenation catalyst S-2 is obtained.
[0082] The component content of...
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