Where is LD 441 used?
- Description:Pyrolysis Gasoline Diolefins selective hydrogenation
- Characteristics:Ni, Al2O3
LD 441 is a recent generation of nickel on alumina catalyst used for the selective hydrogenation of diolefins present in pyrolisis gasoline streams.
It displays high activity, stability and tolerance to impurities.
LD 441 is used in the first step pygas hydrogenation (typically when feedstock is contaminated or when sweetening of the pyrolysis gasoline is required). It can be associated with a CoMo catalyst placed in a second step reactor for aromatics production after olefins hydrogenation and hydrodesulfurization.
LD 441 catalyst is delivered under oxide form. During the oil in of this catalyst, it is mandatory to strictly respect Axens Procedure. The presence on site of one Axens expert to help operators to properly apply the procedure is highly recommended.