Catalyst poison removal | Nickel and vanadium removal

Nickel and vanadium are often found in heavier hydrocarbon fractions such as vacuum gas oil (VGO), to a lesser extent in heavy coker gas oil, but particularly in deasphalted oil (DAO). When nickel and vanadium deposit on the catalyst, they deactivate the catalyst by plugging up the pore system. In general, the higher a feedstock’s distillation end-point, the higher the concentration of nickel and vanadium. This explains why the problem occurs frequently in fluid catalytic cracking (FCC) pretreaters running on heavy feedstocks.

Topsoe offers a very comprehensive portfolio of guard catalysts that effectively trap nickel and vanadium before they reach your high-activity main catalyst. Our guards deliver very high hydrodemetallization (HDM) activity and capacity, ensuring that they not only capture contaminants, but can store them throughout the cycle length.

Applications within this area

Arsenic removal

Topsoe offers a number of highly efficient arsenic-trap catalysts that catch and accumulate arsenic many times more effectively than conventional hydrotreating catalysts.

Chlorine guards

Absorb any inorganic chlorine your feedstocks might contain and remove the threats to your ammonia and hydrogen plant productivity.

Phosphorus removal

Topsoe's proven hydrodemetallization (HDM) loading schemes will protect your reactor with the industry’s highest phosphorus uptake.

Silicon removal

Developing catalysts with superior silicon capacity, Topsoe can help you tailor your loading scheme to guard against silicon and maximize cycle lengths.

Sulfur guards

Remove hydrogen sulfide and other sulfurous compounds at temperatures below 150°C (300°F) with Topsoe’s very high capacity sulfur guards.

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