High-resistance wear-resistant ferrum-based catalyst used in slurry bed reactor and preparation method thereof
An iron-based catalyst and catalyst technology are applied in the preparation of liquid hydrocarbon mixtures, chemical instruments and methods, catalysts for physical/chemical processes, etc. The effect of improved hydrothermal stability, suitable pore size distribution, and low selectivity of by-products
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Embodiment 1
[0030] 76 kg of ferric nitrate nonahydrate and 0.2 kg of copper nitrate trihydrate were dissolved in deionized water to prepare 2000 liters of solution. Dissolve 50 kg of anhydrous sodium carbonate with deionized water to prepare 500 liters of solution. Preheat the mixed solution of iron and copper metal salts and sodium carbonate solution to 45°C, co-precipitate into the reaction kettle within 50 minutes, adjust the pH value of the precipitation to 5, and leave it to age for 180 minutes after the precipitation is completed. Afterwards, filter and wash to obtain a co-precipitation filter cake. Mix 0.06 kg of boric acid with 110 liters of deionized water, then pour this mixed solution into the co-precipitation filter cake, and mix well. The mixing temperature was 100°C, and the mixing time was 5 minutes. Take SiO 2 with K 2 The weight ratio of O is 5, SiO 2 Add 0.56 kg of potassium silicate aqueous solution with a weight concentration of 45% into the catalyst slurry, mix w...
Embodiment 2
[0032] 76 kg of ferric nitrate nonahydrate and 0.2 kg of copper nitrate trihydrate were dissolved in deionized water to prepare 1000 liters of solution. Dissolve 50 kg of anhydrous sodium carbonate with deionized water to prepare 180 liters of solution. Preheat the mixed solution of iron and copper metal salts and sodium carbonate solution to 50°C, and co-precipitate into the reaction kettle within 45 minutes. When the precipitation is adjusted, the pH value is 5. After the precipitation is completed, let it stand for 160 minutes, and the aging is over. Afterwards, filter and wash to obtain a co-precipitation filter cake. Take SiO 2 with K 2 The weight ratio of O is 1, SiO 2 Add 0.13 kg of potassium silicate aqueous solution with a weight concentration of 40% into the catalyst slurry, mix well, and then take SiO 2 Add 2.86 kg of silica sol with a weight concentration of 35% into the catalyst slurry and mix evenly. Mix 0.6 kg of boric acid with 110 liters of deionized wate...
Embodiment 3
[0034] 76 kilograms of ferric nitrate nonahydrate and 1.2 kilograms of copper nitrate trihydrate were dissolved in deionized water to prepare 530 liters of solution. After preheating the mixed solution of iron and copper metal salts to 55°C, within 40 minutes, co-precipitate with 15% ammonia solution into the reaction kettle. After aging, filter and wash to obtain a co-precipitation filter cake. Mix 0.67 kg of boron oxide with 67 liters of deionized water, then pour this mixed solution into the co-precipitation filter cake, and mix well. The mixing temperature was 90°C, and the mixing time was 15 minutes. Take SiO 2 with K 2 The weight ratio of O is 4, SiO 2 Add 3 kg of potassium silicate aqueous solution with a weight concentration of 35% into the catalyst slurry and mix evenly. Adjust the pH of the slurry to 5 to prepare a catalyst slurry with a solid content of about 25%. After impregnating it at 55°C for 15 minutes, send the catalyst slurry into a pressure spray dryer...
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