Iron-based catalyst for Fischer-Tropsch synthesis and preparation method thereof
A technology of iron-based catalysts and alloy powders, applied in the preparation of liquid hydrocarbon mixtures, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of energy consumption in the preparation process, and achieve easy large-scale production and high reactivity , low-cost effect
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Embodiment 1
[0028] Embodiment 1, preparation iron-based catalyst A
[0029] Sieve the metal Fe powder to 1-100 microns, take 5 kg of the sieved sample and add it to the ball mill, and take H2O with a concentration of 40%. 2 o 2 Add 0.5 kg of the solution into the ball mill, and add zirconium balls with a diameter of 3 to 10 mm into the ball mill, the volume of which is 40% of the volume of the barrel of the ball mill. Start the ball mill and mill for 1 hour. The milled sample is dried in an oven at 100°C for 3 hours to obtain a finished catalyst. The catalyst is pressed into tablets at 15.0 MPa, and then crushed to 250-400 microns to obtain a granular iron-based catalyst, denoted as A .
[0030] The iron-based catalyst A prepared in this example catalyzed the Fischer-Tropsch synthesis reaction in a fixed-bed reactor at a reaction temperature of 290° C. Other reaction conditions and reaction results are shown in the data in Table 1.
Embodiment 2
[0031] Embodiment 2, preparation iron-based catalyst B
[0032] Take the Fe-Cu alloy powder with a mass ratio of Fe and Cu of 100:43 and sieve it to 1-100 microns, take 2 kg of the sieved sample and add it to the ball mill, and take 20% H 2 o 2 Add 0.5 kg of the solution into the ball mill, and add zirconium balls with a diameter of 3 to 10 mm into the ball mill, the volume of which is 20% of the volume of the barrel of the ball mill. Start the ball mill and mill for 2 hours, place the milled sample in an oven at 250°C and dry for 5 hours to obtain a finished catalyst, which is pressed into tablets at 15.0 MPa, and then crushed to 250-400 microns to obtain a granular iron-based catalyst, denoted as B .
[0033] The iron-based catalyst B prepared in this example catalyzed the Fischer-Tropsch synthesis reaction in a fixed-bed reactor at a reaction temperature of 280°C. Other reaction conditions and reaction results are shown in Table 1.
Embodiment 3
[0034] Embodiment 3, preparation iron-based catalyst C
[0035] Take the Fe-Mn alloy powder with a mass ratio of Fe and Mn of 100:160 and sieve it to 10-1000 microns, take 5 kg of the sieved sample and add it to the ball mill, and add zirconium balls with a diameter of 3-10 mm to the ball mill. It is 40% of the volume of the barrel of the ball mill. Take the concentration of 40% H 2 o 2 Solution 4kg is added in the ball mill, start ball mill ball mill 3h, the sample after ball mill is placed in the oven of 150 ℃ and dries 8h to obtain finished catalyst, sieves and obtains the powdery iron-based catalyst of 10~200 microns, is denoted as C.
[0036] The iron-based catalyst C prepared in this example was used to catalyze the Fischer-Tropsch synthesis reaction in a slurry platform reactor at a reaction temperature of 270 ° C. Other reaction conditions and reaction results are shown in the data in Table 1.
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