For instance, the CT with dummy masses exhibited fundamental frequencies of 4.75 Hz in the X direction and 4.25 Hz in the Z direction, while the CT without dummy masses had fundamental frequencies of 11.75 Hz in
State-of-the-art hydrocracking catalysts possess a very high activity and are capable of cracking high volume throughputs. Such catalysts, however, are highly sensitive to contaminants such as sulfur, metals and nitrogen compounds, which consequently must be removed from the hydrocarbon stream prior ...