Hydrogenation catalyst for sulfur-containing liquefied gas at low temperature, and preparation method and application thereof
A technology of hydrogenation catalyst and liquefied gas, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical instrument and method, etc., and can solve the problem of high hydrogenation temperature, cumbersome, presulfurization treatment High temperature and other problems, to achieve the effect of low hydrogenation reaction temperature
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[0039] Catalyst preparation: Weigh a certain amount of molded Y-alumina carrier, use soluble salt of nickel, soluble salt of cobalt, soluble salt of molybdenum to make a load solution equal to the volume of the carrier, and soak the carrier in the carrier at room temperature After a certain period of time in the loading solution, the remaining soaking solution is poured out, and after drying and roasting, the required catalyst is obtained. Contain Mo 2 o 3 8.0%~20.0%, NiO 6.0%~20.0%, CoO 1~3%, the prepared catalyst is Φ3×3~5mm strip type, or clover type, specific surface area 140~200m 2 / g.
[0040] Catalyst evaluation conditions: feed temperature 35~40℃, reaction temperature 40~100℃, reaction pressure 1.5~3.0MPa, volume liquid hourly space velocity 1.5~15.0h -1 , hydrogen / olefin molar ratio 1.1~1.4.
Embodiment 1
[0042] Take by weighing a certain amount of shaped Y-alumina carrier, according to the content Mo on the final catalyst 2 o 3 Content 12.0%, NiO content 10.0%, CoO content 1.0% Quantitatively weigh ammonium molybdate tetrahydrate, nickel nitrate hexahydrate, cobalt acetate tetrahydrate, make a solution equal to the volume of the carrier, and put the Y-alumina carrier at room temperature Soak in the solution for 12 hours, pour out the remaining soaking liquid. After drying at 125°C, it was divided into three parts and fired at 350, 375°C, 400°C, and 450°C for 6 hours. The prepared catalysts are 1#, 2#, 3#, 4#, and the specific surface area is 145.2m 2 / g, 159.8m 2 / g, 176.2m 2 / g, 198.5m 2 / g.
[0043] The prepared 1#, 2#, 3# catalysts were evaluated, the feed temperature was 35°C, and the reaction temperature was 40-65°C. The evaluation results are shown in Table 1.
[0044] Table 1 Hydrogenation performance of catalysts prepared at different calcination temperatures
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Embodiment 2
[0049] Take a certain amount of shaped Y-alumina carrier, weigh nickel nitrate hexahydrate and cobalt acetate tetrahydrate according to the final catalyst with NiO content of 20.0% and CoO content of 3.0%, and make a solution with the same volume as the carrier. Soak the carrier in the solution for 12 hours, pour out the remaining soaking solution, and dry it at 120°C; 2 o 3 Content 20.0% Weigh ammonium molybdate tetrahydrate and make a solution with the same volume as the carrier. Soak the carrier loaded with nickel / cobalt in the solution for 12 hours at room temperature, pour out the remaining soaking solution, and dry at 120°C , 350 ℃ roasting 6h. The prepared catalyst is 5# with a specific surface area of 151.6m 2 / g.
[0050] The 5# catalyst was evaluated, the feed temperature was 35°C, and the reaction temperature was 40-65°C. The evaluation results are shown in Table 2.
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