Heavy oil hydrotreating catalyst and its preparation method
A heavy oil hydrogenation and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, catalyst carrier, etc., can solve the problem of low specific surface area of carrier alumina, unfavorable dispersion of active components, incomplete vulcanization of active metals, etc. problems, to achieve the effect of improving anti-carbon deposition capacity, high capacity, and reducing reaction coking
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Embodiment 1
[0050] (1) Catalyst preparation
[0051] Weigh 600g of ammonium phosphate, dissolve in 2000mL deionized water, to give solution A; Grind 1000g of petcoke to a powder, then add to solution A, place for 1.5h, then filter, and the resulting solid sample is placed in an oven and dried at 110 °C for 5h. At 200 °C, the above-mentioned dried solid samples are pretreated with water vapor for 3 h (the volume air velocity of water vapor gas is 1200 h -1 The temperature is then raised to 400 °C, the pretreatment is continued for 3 h, and then cooled to 60 °C under nitrogen protection to obtain pretreatment petcoke.
[0052] The 1000g of the above obtained pretreatment petroleum coke, 57.1g of quasi-thin aluminumite powder and 2000g of potassium hydroxide were mixed evenly, placed in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumed, under the condition of microwave power of 0.3kw, heated to 500 °C, constant for 40 min, and then passed nitrogen to atmospheric pressur...
Embodiment 2
[0059] (1) Catalyst preparation
[0060] Weigh 500g of diammonium hydrogen phosphate, dissolve in 2000mL deionized water, to give solution A; Grind 1000g of petcoke to a powder, then add to solution A, place for 1.5h, then filter, and the resulting solid sample is placed in an oven and dried at 110 °C for 5h. At 200 °C, the above-mentioned dried solid samples are pretreated with water vapor for 3 h (the volume air velocity of water vapor gas is 1000 h -1 The temperature is then raised to 400 °C, the pretreatment is continued for 3 h, and then cooled to 60 °C under nitrogen protection to obtain pretreatment petcoke.
[0061]The 1000g of the above obtained pretreatment petroleum coke, 85.7g of pseudo-thin aluminum powder and 3000g of potassium hydroxide were mixed evenly, placed in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumed, under the condition of microwave power of 0.3kw, heated to 600 °C, constant for 20 min, and then passed nitrogen to atmospheric...
Embodiment 3
[0068] (1) Catalyst preparation
[0069] Weigh 400g of ammonium dihydrogen phosphate, dissolve in 2000mL deionized water, to give solution A; Grind 1000g of petcoke to a powder, then add to solution A, place for 1.5h, then filter, and the resulting solid sample is placed in an oven and dried at 110 °C for 5h. At 200°C, the above-mentioned dried solid samples are pretreated with water vapor for 3 h (the volume air velocity of water vapor gas is 800 h -1The temperature is then raised to 400 °C, the pretreatment is continued for 3 h, and then cooled to 60 °C under nitrogen protection to obtain pretreatment petcoke.
[0070] The 1000g of the above obtained pretreatment petroleum coke, 114.3g of pseudo-thin aluminum powder and 4000g of potassium hydroxide were mixed evenly, placed in a microwave heating furnace with a microwave frequency of 2450MHz, vacuumed, under the condition of microwave power of 0.3kw, heated to 400 ° C, constant 60min, and then passed nitrogen to atmospheric pres...
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