Regenerated hydrogenation refining catalyst and method for producing a hydrocarbon oil
A hydrofining and catalyst technology, which is applied in the fields of refined hydrocarbon oil, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problem of catalyst activity reduction and achieve high hydroisomerization activity effect
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Embodiment 1
[0161]
[0162] (Carbon content measurement process)
[0163]A part of the sample was collected from the used catalyst obtained in Reference Example, washed sufficiently with hexane, and then dried at 70° C. for 2 hours with a reduced-pressure drier. Carbonaceous substances contained in the sample were quantified using a carbon / sulfur analyzer EMIA-920V manufactured by Horiba Seisakusho. As a result, the used catalyst contained 3.5% by mass of carbonaceous substances in terms of carbon atoms based on the dry total mass. In addition, the hydrocarbon content of the used catalyst calculated from the mass change before and after the hexane washing and drying of the sample was 9% by mass relative to the dry total mass of the catalyst.
[0164] (Deoiling process)
[0165] The used hydrotreating catalyst was deoiled at 400° C. for 3 hours in a nitrogen stream.
[0166] (roasting process)
[0167] Put the deoiled used catalyst into the heating furnace, raise the temperature to 3...
Embodiment 2
[0171]
[0172] A regenerated hydrotreating catalyst was obtained in the same manner as in Example 1, except that the calcining conditions after the temperature rise were set at 500° C. for 0.5 hours in the calcining step for preparing the regenerated hydrotreating catalyst. The carbonaceous substance content in the regenerated hydrotreating catalyst was 0.5% by mass in terms of carbon atoms.
[0173]
[0174] A middle distillate derived from FT synthetic oil was hydrotreated in the same manner as in Example 1 except that the regenerated hydrotreating catalyst obtained above was filled in the reactor. When the running time is 2000 hours, C 18 The reaction temperature at which the isomer rate reached 85% was 343° C., and the yield of the light oil fraction was 44% by mass. In addition, the produced oil does not substantially contain olefin components and oxygen-containing compounds. The results are shown in Table 1.
Embodiment 3
[0176]
[0177] A regenerated hydrotreating catalyst was obtained in the same manner as in Example 1 except that the calcining conditions after the temperature rise were set at 490° C. for 0.5 hours in the calcining step for preparing the regenerated hydrotreating catalyst. The carbonaceous substance content in the regenerated hydrotreating catalyst was 0.8% by mass in terms of carbon atoms.
[0178]
[0179] A middle distillate derived from FT synthetic oil was hydrotreated in the same manner as in Example 1 except that the regenerated hydrotreating catalyst obtained above was filled in the reactor. When the running time is 2000 hours, C 18 The reaction temperature at which the isomer rate reached 85% was 344° C., and the yield of the light oil fraction was 44% by mass. In addition, the produced oil does not substantially contain olefin components and oxygen-containing compounds. The results are shown in Table 1.
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Abstract
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