Application : Arsenic Removal from sweet liquids & gases
Type : PbO, Al2O3
Shape : Spheres

MEP-191 is a catalytic adsorbent mass developed for the protection of catalysts against poisoning by arsenic. Sulfur in the form of COS does not alter the arsenic removal efficiency of MEP-191.

Arsenic, which is often present as arsine (AsH₃) in light olefinic cuts from the FCC and selective steam cracker feeds, is a very strong poison for selective hydrogenation catalysts used for olefin purification. Therefore, elimination of any arsenic upstream of the catalytic bed to less than a few ppb is absolutely necessary for efficient catalyst performance.

MEP-191 is exceptionally effective in this service, featuring:

· Full efficiency in the presence of carbonyl sulfide

· No potential explosive reactions in the presence of acetylenes

· High arsenic adsorption capacity

· High macroporosity for minimal risk of pore condensation

MEP-191 can be installed as a guard layer in the same reactor as the hydrogenation catalyst since it is not affected by regenerations.

MEP-191 is also efficient for the removal of traces of H₂S and COS from liquids and gases at ambient or higher temperatures.