Slurry bed methanation catalyst, preparing method and application
A methanation catalyst and slurry bed technology, applied in the petroleum industry, gas fuel, fuel, etc., can solve the limitation of the industrialization process of the slurry bed methanation process, catalyst particle size, strength and low temperature reaction performance can not be better satisfied, Increase catalyst wear and other problems, achieve the effect of increasing low-temperature activity, small particle size, and good catalytic methanation performance
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[0025] Example 1
[0026] ·Carrier pretreatment: 60~80 mesh, specific surface area is 150m 2 / g of γ-Al 2 O 3 Baking at 400℃ for 1h; impregnation: 2.43g NiCl 2 ·6H 2 O is dissolved in 15ml of water, and it is combined with 10g of roasted γ-Al 2 O 3 Same volume immersion at room temperature for 5h;
[0027] ·Drying and roasting: Put the impregnated sample in an oven and dry it at 90°C for 5 hours. Grind the dried powder and place it in a muffle furnace and roast it at 350°C for 6 hours to obtain NiO / γ-Al 2 O 3 Forebody
[0028] ·Hydrogen reduction: NiO / γ-Al 2 O 3 The volume of the precursor body is 5% H 2 With 95% N 2 Ni / γ-Al is obtained after reduction at 450℃ for 12h in a mixed atmosphere 2 O 3 , The composition of the product catalyst is: Ni5wt%, γ-Al 2 O 3 95wt%;
[0029] The catalyst prepared in this example was carried out in a 500ml slurry-bed high-pressure reactor. The reaction conditions and performance evaluation results are shown in Table 1. The specific steps of the reaction...
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[0031] Example 2
[0032] ·Carrier pretreatment: 80~100 mesh, specific surface area is 200m 2 / g of γ-Al 2 O 3 Baking at 450℃ for 1.5h;
[0033] Impregnation: 4.86g NiCl 2 ·6H 2 O and O.14gMoCl 5 Dissolve it in 15ml water, and mix it with 10g roasted γ-Al 2 O 3 10h immersion in equal volume at room temperature;
[0034] ·Drying and roasting: Put the impregnated sample in an oven and dry at 100℃ for 10h, ground the dried powder in a muffle furnace and roast it at 400℃ for 5h to obtain NiO / γ-Al 2 O 3 Forebody
[0035] ·Hydrogen reduction: NiO / γ-Al 2 O 3 The volume of the precursor body is 10% H 2 With 90% N 2 Ni / γ-Al is obtained after reduction at 500℃ for 10h in the mixed atmosphere 2 O 3 , The composition of the product catalyst is: Ni 9.05wt%, Mo 0.45wt%, γ-Al 2 0 3 90.50wt%;
[0036] The catalyst prepared in this example was carried out in a 500 ml slurry-bed high pressure reactor. The reaction conditions and performance evaluation results are shown in Table 1, and the specific steps...
Example Embodiment
[0037] Example 3
[0038] ·Carrier pretreatment: 100~120 mesh, specific surface area is 250m 2 / g of γ-Al 2 O 3 Roast at 500℃ for 2h;
[0039] Impregnation: 7.29g NiCl 2 ·6H 2 O and 0.31gLa(NO 3 ) 3 ·6H 2 O is dissolved in 15ml of water, and it is combined with 10g of roasted γ-Al 2 O 3 15h of equal volume immersion at room temperature;
[0040] ·Drying and roasting: Put the impregnated sample in an oven at 110°C for 15h, ground the dried powder and place it in a muffle furnace and roast for 4h at 450°C to obtain NiO / γ-Al 2 O 3 Forebody
[0041] ·Hydrogen reduction: NiO / γ-Al 2 O 3 The volume of the precursor body is 15% H 2 With 95% N 2 Ni / γ-Al is obtained after reduction at 550℃ for 8h in the mixed atmosphere 2 O 3 , The composition of the product catalyst is: Ni 12.93wt%, La 0.86wt%, γ-Al 2 O 3 86.21wt%;
[0042] The catalyst prepared in this example was carried out in a 500 ml slurry-bed high pressure reactor. The reaction conditions and performance evaluation results are shown in T...
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