Method for producing ultra-low sulfur diesel
A technology for ultra-low-sulfur diesel and diesel oil, which is applied in the petroleum industry, hydrocarbon oil treatment, and hydrotreating processes, etc. It can solve the problems of no coordination effect of active metals, poor interaction catalyst strength, and high catalyst metal content. Reduce construction investment and operating costs, increase the saturation depth of aromatics, and increase the effect of cetane number
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[0030] Example 1
[0031] Add 1000mL of water to the reaction tank, then add 40g of nickel chloride to dissolve, then add 52g of ammonium metatungstate to dissolve, then add 5g of zirconium oxychloride to dissolve, and then add 10% ammonia to form a gel until the pH is 8, and gel The temperature is 50℃. After gelation, it is aged for 1 hour, and then filtered. Add 600ml purified water, 16g molybdenum trioxide and 32g aluminum hydroxide to the filter cake, beat and stir evenly, filter, dry the filter cake at 80℃ for 5 hours, and then extrude. Shaped, washed with clean water 3 times, dried the wet bar at 120°C for 5 hours, and calcined at 500°C for 4 hours to obtain the final catalyst A. The composition and main properties are shown in Table 1.
Example Embodiment
[0032] Example 2
[0033] According to the method of Example 1, add aluminum chloride, nickel chloride, and sodium tungstate to the reaction tank according to the component content ratio of catalyst B in Table 1, and then add 16% ammonia to form a gel until the pH is 9 , The gelatinization temperature is 80 ℃, aging for 3 hours after gelation, then filter, the filter cake is washed twice with 500mL clean water, add purified water and molybdenum trioxide, beating and stirring uniformly, filtered, the filter cake is dried at 70 ℃ for 7 hours , And then extruded into a shape, washed twice with clean water, dried the wet bar at 100°C for 8 hours, and calcined at 550°C for 3 hours to obtain the final catalyst B. The composition and main properties are shown in Table 1.
Example Embodiment
[0034] Example 3
[0035] According to the method of Example 1, add nickel nitrate, ammonium metatungstate, aluminum hydroxide, and silica sol to the reaction tank according to the component content ratio of catalyst C in Table 1, and then add 12% ammonia to form a gel until the pH The value is 10, and the gel forming temperature is 60℃. After gelation, it is aged for 2 hours, then filtered, the filter cake is added with molybdenum trioxide, beating and stirring uniformly, filtered, the filter cake is dried at 120℃ for 1 hour, and then extruded into a wet bar It was dried at 130°C for 3 hours and calcined at 600°C for 3 hours to obtain the final catalyst C. The composition and main properties are shown in Table 1.
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