Shell distribution catalyst and preparation method thereof and Fischer-Tropsch synthetic method
A Fischer-Tropsch synthesis and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. It is suitable for large-scale implementation, the operation process is simple and easy to control, and the shell rate is high.
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Embodiment 1
[0095] 1. 200kg of butterfly-shaped γ-alumina particles extruded by a 1.6mm orifice plate (the particle length is 2-4 mm, and its water absorption rate is measured to be 0.8 ml / g) is used as a catalyst carrier and put into the porous carrier storage tank 11 .
[0096] 2. Dissolving cobalt nitrate in water, preparing a solution containing catalytically active components (calculated as CoO, the concentration of cobalt nitrate is 330 g / L) and placing it in the solution storage tank 21 .
[0097] 3. Send the porous carrier into the hollow container 31, rotate the hollow container 31 (rotation speed is 3.5 rpm), and start the vacuum pump to vacuumize the hollow container 31 at the same time (wherein the hollow container is arranged at equal intervals along the axis of rotation) 3 vacuum lines, the air outlets on each vacuum line are buried in the layer formed by the porous carrier and the air outlets are distributed at equal intervals along the vacuum pipeline, and the air outlets ...
Embodiment 2
[0113] The catalyst was prepared by the same method as in Example 1, except that in step 3, during the spraying process, the vacuum conditions were not adjusted, and the partial pressure generated by water was up to 20kPa.
[0114] The composition and shell ratio of the prepared catalyst are listed in Table 1, and the relative percentage of cobalt element is listed in Table 2 from the outer layer to the core along the radial section of the porous carrier.
Embodiment 3
[0116] The catalyst was prepared by the same method as in Example 1, except that in Step 4, the drying temperature was 120°C.
[0117] The composition and shell ratio of the prepared catalyst are listed in Table 1, and the relative percentage of cobalt element is listed in Table 2 from the outer layer to the core along the radial section of the porous carrier.
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