In the technique of slurry bed hydrocracking for heavy oil, catalysts are highly dispersed in the feedstock oil and suspend in the reactor. In this technique, catalyst is playing an important role in two ways: preventing residue from coke formation by releasing activated hydrogen; on the other hand, catalysts granules could be used as carriers, and unloaded out of the reactors with coke together. Coke sedimenting on the surface of the catalyst could cover the reactive center, and reduce coke-restraining ability of the catalyst. Therefore, examination about deactivation condition of water-soluble catalyst in slurry bed hydrocracking helps us know about activity changes of catalyst during the reaction and choose a proper reaction space velocity. What’s more , study on catalyst activities at different reaction time makes it sense to determine reaction condition of slurry bed hydrocracking technology.
展开▼
