tk - 449 SiliconTrap™

Replacing TK-439, TK-449 SiliconTrap™has the highest silicon pick-up capacity of all the TK-400 series catalysts. This catalyst is used as a guard bed catalyst in units with severe silicon contamination.

tk - 449 SiliconTrap™does not contain any metals and should therefore be used in combination withTK-447 SiliconTrap™and/orTK-441 SiliconTrap™if desulfurization and denitrifications are also required.

The catalyst system should be designed with an optimized graded bed system to minimize pressure drop on top of a combination ofTK-441 SiliconTrap™,TK-447 SiliconTrap™and TK-449 SiliconTrap™. This will result in a significantly longer cycle length of any coker naphtha unit compared with operation on other typical naphtha hydrotreating catalysts.