دورية
FCC SOxAdditives Deactivation
| العنوان: | FCC SOxAdditives Deactivation |
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| المؤلفون: | Eugênio Roncolatto, Rodolfo, J. B. Cardoso, Mauri, Lau Lam, Yiu, Schmal, M. |
| المصدر: | Industrial & Engineering Chemistry Research; April 2006, Vol. 45 Issue: 8 p2646-2650, 5p |
| مستخلص: | The relative importance of possible factors leading to the deactivation of a commercial SOxemission reduction additive used in the fluid cracking process was evaluated individually. This additive was based on mixed oxides of Mg and Al and contained small amounts of Ce and V. The laboratory deactivation simulation was an extended hydrothermal treatment of the additive by steam with or without the presence of sources of possible poisons such as Si, V, and S. It was observed that a reduction of the area and sintering and migration of V from the catalyst to the additive did not affect the performance of the additive. However, migration of Si from a fresh catalyst or sulfate from an impregnated catalyst drastically reduced the SOxadsorption capacity of the additives. As the migration of Si was important mainly with fresh catalyst, which is present in the inventory of the unit in very small quantity compared to the large amount of equilibrium catalyst, the main factor leading to deactivation of the SOxadditives in the industrial operation can be attributed to formation of stable sulfates. |
| قاعدة البيانات: | Supplemental Index |
Find this issue from the American Chemical Society | تدمد: | 08885885 15205045 |
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| DOI: | 10.1021/ie0511985 |