اثر فرايند خشك كردن پاششي و پيونددهنده سيليس در بهبود استحكام فرسايشي كاتاليزگرهاي هم رسوبي آهن در سنتز فيشر– تروپش

Effect of Spray Drying and Silica Binder on Improvement of Attrition Resistance of Co-Precipitated Iron Catalysts in Fischer-Tropsch Synthesis

Mechanical strength is one of the technical properties of heterogeneous catalysts which strongly depends on their synthesis and forming method. A serious problem with the use of Fe Fischer-Tropsch catalysts in a reactor is their tendency to undergo attrition. In this paper the factors affecting the extent of attrition of catalysts and specialy Fe Fischer-Tropsch catalysts in slurry reactors are initially introduced. The effect of spray drying along with silica binder on improvement of attrition resistance of co-precipitated Fe Ctalysts are presented afterward. It is shown that by spray drying method, under optimum operational conditions, production of spherical catalystsʹ granules with suitable density and strength is possible. Furthermore, strength of the granules would be enhanced using proper amount of silica binder.