A catalytic filter system adaptable to the various challenges of a catalytic gas phase reaction is provided, wherein the system comprises a filtration vessel having a fluid inlet and a fluid outlet, a separation wall provided in the interior of the filtration vessel and a plurality of filter candles, the separation wall dividing the interior into a raw gas chamber and a clean gas chamber; the separation wall comprising a plurality of openings designed to sealingly accommodate the plurality of filter candles; the fluid inlet being arranged in fluid communication with the raw gas chamber upstream of the plurality of filter candles; the fluid outlet being arranged in fluid communication with the clean gas chamber downstream of the plurality of filter candles; and the filter system comprising a first catalytic medium accommodated in the clean gas chamber downstream of the filter candles and upstream of the fluid outlet.