Arsenic removal

Efficient arsenic trapping

Originating in processed crude oil, arsenic has long been recognized as a severe catalyst poison. Compared to other contaminants, arsenic is a genuine poison, since it actively titrates the working catalytic sites by forming NiAs or CoAs.

Topsoe offers a number of highly efficient arsenic-trap catalysts that catch and accumulate arsenic many times more effectively than conventional hydrotreating catalysts. These arsenic guards can also be used effectively as part of a tailored hydrodemetallization (HDM) solution.

Catalysts for arsenic removal

TK-49 catalyst

TK-49 is a high-nickel catalyst based on an alumina carrier for use in catalyst bed grading systems, where maximum arsenic pick-up is needed.

TK-41 catalyst

TK-41 has very high affinity for arsenic trapping in VGO and gas oil services. This catalyst is also able to trap Ni/V/Si.

Applications within this area

Chlorine guards

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

Nickel and vanadium removal

Topsoe offers a very comprehensive portfolio of guard catalysts that effectively trap nickel and vanadium before they reach your high-activity main catalyst.

Phosphorus removal

Our proven hydrodemetalization (HDM) loading schemes will protect your reactor with the industry's highest phosphorus uptake.

Silicon removal

Developing catalysts with superior silicon capacity, we 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 our very high capacity sulfur guards.

Contact us

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