1. Hydroconversion of Fischer–Tropsch waxes: Assessment of the operating conditions effect by factorial design experiments
- Author
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Calemma, V., Correra, S., Perego, C., Pollesel, P., and Pellegrini, L.
- Subjects
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FISCHER-Tropsch process , *SILICON compounds , *FACTORIAL experiment designs , *ALUMINUM oxide - Abstract
Abstract: The effect of operating conditions (temperature, space velocity, pressure and H2/feed ratio) on the hydroconversion of Fischer–Tropsch wax and isomer content of the middle distillate was investigated by carrying out experiments according to a second order factorial design. The catalyst used was a 0.3% platinum/amorphous silica–alumina catalyst. Temperature and space velocity exhibited the biggest effect on wax conversion rate but a significant role was played by the pressure and the H2/wax ratio as well. The results indicated an inverse relationship between pressure and conversion rate while an opposite behaviour was shown by the H2/wax ratio. The effect of the last two variables was explained respectively in terms of the reaction mechanism of n-paraffins on bifuctional catalyst and the effect of the vapour–liquid equilibrium (VLE) on apparent conversion rate and isomer content of products. [Copyright &y& Elsevier]
- Published
- 2005
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