| Titre : | Catalytic hydrotreatment of crude waxes from different sources over a Ni-W/-Al2O3 catalyst (2008) |
| Auteurs : | Jesús Sánchez, Auteur ; María Fernanda Tallafigo, Auteur ; Miguel A. Gilarranz, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 47 N°18, Septembre 2008) |
| Article en page(s) : | p. 6854–6861 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Crude wax Alumina-supported catalyst Spindle feedstock |
| Résumé : | The hydrotreatment of crude wax from the dewaxing of spindle, light neutral, medium neutral, heavy neutral, and brightstock oil was studied to obtain refined paraffins that are suitable for high-grade applications. The runs were performed using an alumina-supported catalyst with 5.9 wt % of nickel (as NiO) and 16.2 wt % of tungsten (as WO3) that was used for >6000 h. The ease of treatment was ranked as follows: spindle > light neutral > medium neutral > heavy neutral ≫ brightstock. The use of high temperatures and pressures was needed to obtain a convenient reduction in the color of the heavier feedstocks. Spindle feedstock required a temperature of 548 K and a pressure of 9.81 MPa, whereas 623 K and 13.7 MPa were needed for heavy neutral feedstock to obtain refined paraffins with a Saybolt color of >+30. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie800014u |
